Abstract

[Problem] Provided is an additive for a hot melt adhesive, with which additive a hot melt adhesive composition excellent in low-temperature applicability and bleedout resistance can be obtained. [Solution] The present invention is an additive for a hot melt adhesive, including a C5 resin, wherein the additive for a hot melt adhesive is characterized in that the viscosity performance index VI of the C5 resin is 1.0 or more and 10,000 or less.

IPC Classes  ?

• C09J 11/08 - Macromolecular additives
• C09J 201/00 - Adhesives based on unspecified macromolecular compounds

Abstract

[Problem] Provided is an oxyethylene chain-containing polymer having excellent biocompatibility and still having excellent reactivity. [Problem] Provided is an oxyethylene chain-containing polymer having excellent biocompatibility and still having excellent reactivity. [Solution] An oxyethylene chain-containing polymer according to the present invention is represented by the following general formula (1): [Problem] Provided is an oxyethylene chain-containing polymer having excellent biocompatibility and still having excellent reactivity. [Solution] An oxyethylene chain-containing polymer according to the present invention is represented by the following general formula (1): [Problem] Provided is an oxyethylene chain-containing polymer having excellent biocompatibility and still having excellent reactivity. [Solution] An oxyethylene chain-containing polymer according to the present invention is represented by the following general formula (1): (wherein, in the general formula (1), R1 is —(CH2)p—SH, —(CH2)p—N3, (CH2)p—NH2, or —(CH2)p—COOH, and p is an integer of 1 to 5; R2 to R4 are each independently hydrogen or a C1-10 alkyl group; R5 is a C1-10 alkyl group; R6 is hydrogen or a C1-5 alkyl group; R7 is a C1-10 alkyl group; n is an integer of 5 to 1000; m is an integer of 1 to 10; and q is an integer of 0 to 5).

IPC Classes  ?

• C08F 8/34 - Introducing sulfur atoms or sulfur-containing groups
• C08F 8/06 - Oxidation
• C08F 8/30 - Introducing nitrogen atoms or nitrogen-containing groups
• C08F 116/20 - Monomers containing three or more carbon atoms in the unsaturated aliphatic radical
• C08F 216/20 - Monomers containing three or more carbon atoms in the unsaturated aliphatic radical

Abstract

[Problem] To provide: an o-/m-hydroxystyrene solution that is desirable as a raw material for the commercial-scale production of an o-/m-hydroxystyrene-based polymer and has a high purity and good storage stability; and a method for efficiently preparing same. [Solution] This method for preparing an o-/m-hydroxystyrene solution comprises the following steps (i) to (iv): (i) a deprotection step for bringing o-/m-acetoxystyrene into contact with a base in a solvent to generate o-/m-hydroxystyrene; (ii) a neutralization step for adding an acid to a deprotected o-/m-hydroxystyrene-containing solution to neutralize the solution; (iii) a step for washing the neutralized o-/m-hydroxystyrene-containing solution with water; and (iv) a solvent substitution step for adding a solvent, which can dissolves o-/m-hydroxystyrene, to the o-/m-hydroxystyrene-containing solution and distilling the solution at 40°C or lower to distill off an excess solvent and components other than o-/m-hydroxystyrene.

IPC Classes  ?

• C07C 37/20 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions increasing the number of carbon atoms using aldehydes or ketones
• C07B 61/00 - Other general methods
• C07C 37/00 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
• C07C 39/20 - Hydroxy styrenes
• C08F 220/30 - Esters containing oxygen in addition to the carboxy oxygen containing aromatic rings in the alcohol moiety

Abstract

[Problem] Provided is a cell-adhesive composition including an oxyethylene chain-containing polymer having excellent biocompatibility and excellent reactivity. [Problem] Provided is a cell-adhesive composition including an oxyethylene chain-containing polymer having excellent biocompatibility and excellent reactivity. [Solution]A cell-adhesive composition according to the present invention includes an oxyethylene chain-containing polymer represented by the following general formula (1): [Problem] Provided is a cell-adhesive composition including an oxyethylene chain-containing polymer having excellent biocompatibility and excellent reactivity. [Solution]A cell-adhesive composition according to the present invention includes an oxyethylene chain-containing polymer represented by the following general formula (1): [Problem] Provided is a cell-adhesive composition including an oxyethylene chain-containing polymer having excellent biocompatibility and excellent reactivity. [Solution]A cell-adhesive composition according to the present invention includes an oxyethylene chain-containing polymer represented by the following general formula (1): (wherein, in the general formula (1), R1 is —(CH2)p—SH, —(CH2)p—N3, —(CH2)p—NH2, or —(CH2)p—COOH, and p is an integer of 1 to 5; R2 to R4 are each independently hydrogen or a C1-10 alkyl group; R5 is a C1-10 alkyl group; R6 is hydrogen or a C1-5 alkyl group; R7 is a C1-10 alkyl group; n is an integer of 5 to 1000; m is an integer of 1 to 10; and q is an integer of 0 to 5).

IPC Classes  ?

• A61K 9/50 - Microcapsules
• A61K 9/48 - Preparations in capsules, e.g. of gelatin, of chocolate
• A61K 33/242 - GoldCompounds thereof
• A61K 33/243 - PlatinumCompounds thereof
• A61K 33/38 - SilverCompounds thereof
• A61K 47/60 - Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additivesTargeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the non-active ingredient being a modifying agent the modifying agent being an organic macromolecular compound, e.g. an oligomeric, polymeric or dendrimeric molecule obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyureas or polyurethanes the organic macromolecular compound being a polyoxyalkylene oligomer, polymer or dendrimer, e.g. PEG, PPG, PEO or polyglycerol

Abstract

Provided is a method for producing a vinylphosphonic acid monoester from vinylphosphonic acid diester with high selectivity. Provided is a method for producing a vinylphosphonic acid monoester from vinylphosphonic acid diester with high selectivity. The method for producing a vinylphosphonic acid monoester from a vinylphosphonic acid diester represented by the following Formula (1): Provided is a method for producing a vinylphosphonic acid monoester from vinylphosphonic acid diester with high selectivity. The method for producing a vinylphosphonic acid monoester from a vinylphosphonic acid diester represented by the following Formula (1): Provided is a method for producing a vinylphosphonic acid monoester from vinylphosphonic acid diester with high selectivity. The method for producing a vinylphosphonic acid monoester from a vinylphosphonic acid diester represented by the following Formula (1): wherein R1 and R2 each independently denote a linear or branched alkyl group having from 1 to 4 carbon atoms, the vinylphosphonic acid monoester being represented by the following Formula (2): Provided is a method for producing a vinylphosphonic acid monoester from vinylphosphonic acid diester with high selectivity. The method for producing a vinylphosphonic acid monoester from a vinylphosphonic acid diester represented by the following Formula (1): wherein R1 and R2 each independently denote a linear or branched alkyl group having from 1 to 4 carbon atoms, the vinylphosphonic acid monoester being represented by the following Formula (2): Provided is a method for producing a vinylphosphonic acid monoester from vinylphosphonic acid diester with high selectivity. The method for producing a vinylphosphonic acid monoester from a vinylphosphonic acid diester represented by the following Formula (1): wherein R1 and R2 each independently denote a linear or branched alkyl group having from 1 to 4 carbon atoms, the vinylphosphonic acid monoester being represented by the following Formula (2): wherein R1 denotes a linear or branched alkyl group having from 1 to 4 carbon atoms, according to the invention, wherein the method includes a step of heating the vinylphosphonic acid diester in the presence of a solvent and a basic substance, thereby obtaining the vinylphosphonic acid monoester, and a molar ratio of the basic substance to the vinylphosphonic acid diester is from 0.7 to 3.5.

IPC Classes  ?

• C07F 9/40 - Esters thereof

Abstract

A polyvinyl ether-based polymer useful as a gellant, having a structural unit represented by formula (2): A polyvinyl ether-based polymer useful as a gellant, having a structural unit represented by formula (2): where R1 represents a linear or branched alkanediyl group having 1 to 5 carbon atoms, R2 represents a single bond or a linear or branched alkanediyl group having 1 to 5 carbon atoms, X represents —C(═O)OH, —C(═O)O-M+, or —C(═O)O−, M+ represents a counter ion, and n is an integer of 0 to 3.

IPC Classes  ?

• C08F 16/26 - Monomers containing oxygen atoms in addition to the ether oxygen
• C08F 8/06 - Oxidation

Abstract

The present invention provides a novel technology with which it is possible to respectively produce a temperature-responsive polymer, a hydrophilic polymer and a hydrophobic polymer in a simple manner.　Disclosed is a polymerizable composition which contains the following monomers (A-1) and (B-1).　(A-1): a monomer represented by formula (1-1) (B-1): a monomer represented by formula (2-1) (In formula (1-1), R1represents an alkanediyl group having 1 to 5 carbon atoms, and n represents an integer of 1 to 10.) (In formula (2-1), R2 represents a linear alkanediyl group having 1 to 5 carbon atoms.)

IPC Classes  ?

• C08G 63/66 - Polyesters containing oxygen in the form of ether groups

Abstract

[Problem] To provide a method that is for producing a polymer for resists having an extremely small amount of metallic impurities through suppression of elution of metal from a depth filter in a demetalization treatment of the polymer for resists containing an acidic group. [Solution] A method for producing a polymer according to the present invention is characterized by comprising a step for preparing a polymer and a step for passing, through a depth filter, a solution in which the polymer is dissolved in an organic solvent. The method is characterized in that the depth filter is one that has been cleaned with a solution containing an acid having a plurality of carboxyl groups.

IPC Classes  ?

• C08F 6/06 - Treatment of polymer solutions
• C08F 212/14 - Monomers containing only one unsaturated aliphatic radical containing one ring substituted by hetero atoms or groups containing hetero atoms
• C08F 220/30 - Esters containing oxygen in addition to the carboxy oxygen containing aromatic rings in the alcohol moiety

Abstract

The present invention addresses the problem of providing a method for simply and inexpensively producing a block copolymer of a vinyl ether monomer and any of a wide variety of hydrophobic monomers. This method for producing a block copolymer represented by formula (2) comprises a step for photopolymerizing a hydrophobic monomer by irradiating the hydrophobic monomer with light in the presence of a vinyl ether polymer represented by formula (1).

IPC Classes  ?

• C08F 293/00 - Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
• C08F 16/14 - Monomers containing only one unsaturated aliphatic radical

Abstract

[Problem to be solved] An object of the present invention is to provide a method for evaluating the dissolution properties of a resist polymer, which method allows for an easy evaluation without requiring complicated processes, and with a high sensitivity. [Problem to be solved] An object of the present invention is to provide a method for evaluating the dissolution properties of a resist polymer, which method allows for an easy evaluation without requiring complicated processes, and with a high sensitivity. [Solution] The method for evaluating the dissolution properties of a resist polymer according to the present invention includes the following steps (i) to (iii): the step (i) of dissolving the resist polymer in a solvent to prepare a test solution; the step (ii) of adding a solvent dropwise to the test solution while stirring the test solution, and measuring in real time the weight of the solvent added dropwise and the change in the turbidity of the test solution, as the dropwise addition proceeds; and the step (iii) of calculating the amount of the solvent added dropwise until the turbidity of the test solution reaches a predetermined value.

IPC Classes  ?

• G01N 21/59 - Transmissivity
• C08F 220/18 - Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
• C08F 220/28 - Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
• G03F 7/038 - Macromolecular compounds which are rendered insoluble or differentially wettable
• G03F 7/039 - Macromolecular compounds which are photodegradable, e.g. positive electron resists

Abstract

Provided is a binder composition for a negative electrode which can achieve both a high capacity and an excellent capacity retention rate of a lithium-ion secondary battery. The binder composition for a lithium-ion secondary battery negative electrode of this invention is characterized by containing a vinylphosphonic acid- or vinylphosphonic acid ester-derived vinyl phosphorus polymer and a cellulose-based water-soluble polymer.

IPC Classes  ?

• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• H01M 4/02 - Electrodes composed of, or comprising, active material
• H01M 4/38 - Selection of substances as active materials, active masses, active liquids of elements or alloys
• H01M 4/583 - Carbonaceous material, e.g. graphite-intercalation compounds or CFx
• H01M 10/0525 - Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodesLithium-ion batteries

Abstract

Provided is a solid catalyst which, even when coexisting with a catalyst poison, has excellent activity in decomposing plastics.　The solid catalyst for plastic decomposition comprises a support and ruthenium fixed to the support, wherein the support is a composite metal oxide.

IPC Classes  ?

• B01J 23/63 - Platinum group metals with rare earths or actinides
• B01J 23/46 - Ruthenium, rhodium, osmium or iridium
• C08J 11/16 - Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with inorganic material
• C10G 1/10 - Production of liquid hydrocarbon mixtures from oil shale, oil-sand, or non-melting solid carbonaceous or similar materials, e.g. wood, coal from rubber or rubber waste

Abstract

Provided is a compound that can be used for a resin for a resist having excellent sensitivity, resolution, and etching resistance, or the like, by a compound represented by the following formula (1): Provided is a compound that can be used for a resin for a resist having excellent sensitivity, resolution, and etching resistance, or the like, by a compound represented by the following formula (1): Provided is a compound that can be used for a resin for a resist having excellent sensitivity, resolution, and etching resistance, or the like, by a compound represented by the following formula (1): (wherein R1 represents a hydrogen atom or a methyl group, R2 represents an aliphatic hydrocarbon group having 1 to 6 carbon atoms, m represents an integer of 0 to 5, and n represents an integer of 0 to 4).

IPC Classes  ?

• C07C 69/608 - Esters of carboxylic acids having a carboxyl group bound to an acyclic carbon atom and having a ring other than a six-membered aromatic ring in the acid moiety
• C08F 22/10 - Esters
• C08F 122/10 - Esters
• C08F 222/10 - Esters
• C08L 33/14 - Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen

Abstract

A method for producing isobutyl vinyl ether using isobutyl alcohol as a raw material alcohol, the method including reacting the isobutyl alcohol with acetylene to obtain a mixture containing unreacted isobutyl alcohol and isobutyl vinyl ether, reacting the unreacted isobutyl alcohol and the isobutyl vinyl ether in the mixture in a presence of an acid catalyst to be converted into acetaldehyde diisobutyl acetal, and removing the acetaldehyde diisobutyl acetal by distillation.

IPC Classes  ?

• C07C 41/08 - Preparation of ethers by addition of compounds to unsaturated compounds by addition of organic compounds only to carbon-to-carbon triple bonds
• C07C 41/06 - Preparation of ethers by addition of compounds to unsaturated compounds by addition of organic compounds only
• C07C 41/42 - SeparationPurificationStabilisationUse of additives by change of physical state, e.g. by crystallisation by distillation

Abstract

A method may produce (2-methoxyethyl) vinyl ether with a high purity from 2-methoxyethanol and acetylene. Such a method may include the A1, A2, and A3: (A1) synthesizing a vinyl ether including causing 2-methoxyethanol to react with acetylene to obtain a mixture containing unreacted 2-methoxyethanol and (2-methoxyethyl) vinyl ether; (A2) acetalizing including causing a reaction of the unreacted 2-methoxyethanol and the (2-methoxyethyl) vinyl ether in the mixture in the presence of an acid catalyst to be converted into acetaldehyde bis(2-methoxyethyl)acetal; and (A3) removing the acetaldehyde bis(2-methoxyethyl)acetal by distillation from an acetal-containing mixture obtained in step A2.

IPC Classes  ?

• C07C 41/30 - Preparation of ethers by reactions not forming ether-oxygen bonds by increasing the number of carbon atoms, e.g. by oligomerisation
• C07C 41/42 - SeparationPurificationStabilisationUse of additives by change of physical state, e.g. by crystallisation by distillation

Abstract

[Problem to be Solved] An object of the present invention is to provide a method of producing an alkenyl phosphorus compound. [Problem to be Solved] An object of the present invention is to provide a method of producing an alkenyl phosphorus compound. [Solution to Problem] The method of producing an alkenyl phosphorus compound according to the present invention is a method of allowing a specific phosphorus compound to react with a specific alkynyl compound in the presence of a transition metal complex, a Lewis acid and a low-polarity additive, to produce a specific alkenyl phosphorus compound.

IPC Classes  ?

• C07F 9/40 - Esters thereof
• B01J 23/755 - Nickel

Abstract

An object of the present invention is to provide a method of purifying a phosphorus compound, which method is capable of reducing the generation of a by-product during distillation. The method of method of purifying a phosphorus compound according to the present invention includes the steps of: obtaining a mixture containing a specific phosphorus compound, a specific alkenyl phosphorus compound and a transition metal complex; and subjecting the resulting mixture to distillation after adding a Lewis acid to the mixture, to obtain a first distillate containing the specific phosphorus compound.

IPC Classes  ?

• B01D 3/34 - Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping with one or more auxiliary substances
• C07F 9/40 - Esters thereof

Abstract

The present invention provides: an acetal compound represented by the following general formula (1): The present invention provides: an acetal compound represented by the following general formula (1): The present invention provides: an acetal compound represented by the following general formula (1): wherein R1 represents an alkyl group having from 1 to 12 carbon atoms, a cycloalkyl group having from 5 to 12 carbon atoms or an acyl group having from 1 to 12 carbon atoms; n represents an integer from 1 to 5; m represents an integer from 2 to 4; and Ar represents a residue obtained by removing a hydrogen atom(s) from the hydroxyl groups of a polyhydric phenol having a valence of m; and a resist composition for forming a thick resist film, including the same.

IPC Classes  ?

• C07C 43/315 - Compounds having groups containing oxygen atoms singly bound to carbon atoms not being acetal carbon atoms
• G03F 7/039 - Macromolecular compounds which are photodegradable, e.g. positive electron resists
• G03F 7/038 - Macromolecular compounds which are rendered insoluble or differentially wettable
• C07C 41/54 - Preparation of compounds having groups by reactions producing groups by addition of compounds to unsaturated carbon-to-carbon bonds
• C07C 67/29 - Preparation of carboxylic acid esters by modifying the hydroxylic moiety of the ester, such modification not being an introduction of an ester group by introduction of oxygen-containing functional groups
• C07C 69/753 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a ring other than a six-membered aromatic ring of polycyclic acids

Abstract

[Problem] To provide an additive for a hot melt adhesive, with which it is possible to achieve a hot melt adhesive composition excellent in low-temperature coating properties and bleed-out resistance. [Solution] The present invention provides an additive for a hot melt adhesive, the additive including C5-based resin and being characterized in that the viscosity performance index V1 of the C5-based resin is 1.0-10,000.

IPC Classes  ?

• C09J 201/00 - Adhesives based on unspecified macromolecular compounds
• C09J 11/08 - Macromolecular additives

Abstract

[Problem] The present invention provides a polymer for resists, the polymer having excellent storage stability, high sensitivity and high resolution. [Solution] A polymer according to the present invention comprises a structural unit that has a phenolic hydroxyl group and a structural unit that has a structure wherein a carboxylic acid is protected with an acetal group.

IPC Classes  ?

• C08F 8/12 - Hydrolysis
• C08F 212/04 - Monomers containing only one unsaturated aliphatic radical containing one ring
• C08F 220/12 - Esters of monohydric alcohols or phenols
• G03F 7/039 - Macromolecular compounds which are photodegradable, e.g. positive electron resists

Abstract

[Problem] To provide an oxyethylene chain-containing polymer having excellent reactivity while having excellent biocompatibility. [Solution] This oxyethylene chain-containing polymer is represented by the following general formula (1): (In general formula (1), R12p2p32p22pp-COOH; p is an integer of 1-5; R2-R4are each independent and either hydrogen or an alkyl group with a carbon number of 1-10, R5is an alkyl group with a carbon number of 1-10, R6is hydrogen or an alkyl group with a carbon number of 1-5, R7 is an alkyl group with a carbon number of 1-10, n is an integer of 5-1000, m is an integer of 1-10, and q is an integer of 0-5.)

IPC Classes  ?

• C08F 8/00 - Chemical modification by after-treatment
• C08F 116/18 - Acyclic compounds

Abstract

[Problem] To provide a cell-adhesive composition that has excellent biocompatibility and contains an oxyethylene-chain-containing polymer having excellent reactivity. [Solution] The cell-adhesive composition according to the present invention contains an oxyethylene-chain-containing polymer represented by general formula (1) (wherein R12p2p32p22pp-COOH; p represents an integer of 1 to 5; R2to R4each independently represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms; R5represents an alkyl group having 1 to 10 carbon atoms; R6represents a hydrogen atom or an alkyl group having 1 to 5 carbon atoms; R7 represents an alkyl group having 1 to 10 carbon atoms; n represents an integer of 5 to 1000; m represents an integer of 1 to 10; and q represents an integer of 0 to 5).

IPC Classes  ?

• C08L 29/10 - Homopolymers or copolymers of unsaturated ethers
• A61L 31/10 - Macromolecular materials
• C08F 8/00 - Chemical modification by after-treatment
• C08F 116/18 - Acyclic compounds
• C08K 9/04 - Ingredients treated with organic substances
• C09C 3/10 - Treatment with macromolecular organic compounds

Abstract

[Problem] To provide a method for efficiently mass-producing a polymer solution which has a high polymer concentration, contains a plurality of solvents at a desired content ratio, and is useful for the preparation of a resist composition for a thick film. [Solution] Provided is a method for producing a polymer solution that contains a polymer in an amount of C% by mass in a mixed solvent prepared by mixing at least two solvents at a specified mass ratio, in which the polymer concentration and the solvent composition in a "prepolymer solution" are estimated in such a manner that the solvent composition becomes a predetermined value when the polymer solution containing all of the solvents is concentrated to a desired concentration of C% by mass to prepare the prepolymer solution, and then the prepolymer solution is concentrated to produce a desired polymer solution.

IPC Classes  ?

• C08J 3/02 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
• C08F 212/14 - Monomers containing only one unsaturated aliphatic radical containing one ring substituted by hetero atoms or groups containing hetero atoms
• C08F 220/18 - Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
• G03F 7/039 - Macromolecular compounds which are photodegradable, e.g. positive electron resists

Abstract

12162044 fraction that includes at least one selected from 1-butene and 2-butene and has an isobutene content of less than 3 mass% is brought into contact with a solid acid catalyst at 120-180°C.

IPC Classes  ?

• C07C 2/10 - Catalytic processes with metal oxides
• C07C 11/02 - Alkenes
• C07B 61/00 - Other general methods

Abstract

[Problem] To provide a method for producing a copolymer of a hydroxystyrene-based monomer and a (meth)acrylic acid ester-based monomer, by which the compositional ratio uniformity and yield of the copolymer can be improved. [Solution] The present invention is a method for producing a copolymer by subjecting at least one type of hydroxystyrene-based monomer and at least one type of (meth)acrylic acid ester-based monomer to a polymerization reaction in the presence of a radical polymerization initiator and a solvent, the method being characterized in that the hydroxystyrene-based monomer is a hydroxystyrene compound in which the number of hydroxyl groups is 1-3 or a derivative in which at least some of the hydroxyl groups in these hydroxystyrene compounds are protected by groups that are dissociated by the action of an acid or a base, and the polymerization reaction is carried out while averaging differences in consumption rates of the monomers under conditions (1) to (4). (1) A plurality of monomer solutions which contain the hydroxystyrene-based monomer and the (meth)acrylic acid ester-based monomer and in which the compositional ratio of these monomers is different are prepared. Among the plurality of monomer solutions, a solution having the lowest compositional ratio of the monomer having the highest reactivity is denoted as a first monomer solution, a solution in which the compositional ratio of the monomer having the highest reactivity is at least 5 mol% higher than in the first monomer solution is denoted as an nth monomer solution (n is an integer of 2 or more), and the amount of monomer contained in the first monomer solution is 5-33 mol% of the total monomer amount. (2) The first monomer solution is initially supplied to a reaction vessel, and the nth monomer solutions are then successively supplied into the reaction vessel. (3) The compositional ratio of the monomer having the highest reactivity in the reaction system at the start point of the polymerization reaction is adjusted so as to be 30-90% of the compositional ratio of the monomer having the highest reactivity among all monomers. (4) At a point where the supply of all the monomer solutions is complete, the conversion rate of the monomer having the lowest reactivity is 75% or more.

IPC Classes  ?

• C08F 2/00 - Processes of polymerisation
• C08F 212/14 - Monomers containing only one unsaturated aliphatic radical containing one ring substituted by hetero atoms or groups containing hetero atoms
• C08F 220/10 - Esters

Abstract

[Problem to be Solved] To provide a polymer material having cancer cell adhesion properties while having biocompatibility. [Problem to be Solved] To provide a polymer material having cancer cell adhesion properties while having biocompatibility. [Means to Solve the Problem] A composition for cancer cell adhesion according to the present invention comprises a biocompatible copolymer comprising: at least one repeating unit (A) represented by the following formula (1): wherein R1 represents a methyl group or an ethyl group; and at least one repeating unit (B) represented by the following formula (2): wherein R2 represents an aliphatic hydrocarbon group.

IPC Classes  ?

• G01N 33/574 - ImmunoassayBiospecific binding assayMaterials therefor for cancer
• C08F 216/18 - Acyclic compounds

Abstract

Provided are a 4-hydroxystyrene solution with high purity and good storage stability that is suitable as a source for producing a 4-hydroxystyrene polymer on a commercial scale, and a method of producing the solution. The method of producing a 4-hydroxystyrene solution of the present invention includes the following steps (i) to (iv): (i) deprotection step for contacting 4-acetoxystyrene with a base in a solvent to produce 4-hydroxystyrene; (ii) neutralization step for adding an acid to the solution containing 4-hydroxystyrene after deprotection to neutralize the solution; (iii) step for washing the solution containing 4-hydroxystyrene after neutralization with water; and (iv) solvent replacement step for adding a solvent that can dissolve 4-hydroxystyrene to the solution containing 4-hydroxystyrene followed by distillation at 40° C. or lower to remove other components than 4-hydroxystyrene and excess solvent.

IPC Classes  ?

• C07C 37/56 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions decreasing the number of carbon atoms by replacing a carboxyl or aldehyde group by a hydroxy group
• C08F 12/22 - Oxygen

Abstract

A method of manufacturing a copolymer resin of dicyclopentadiene and a vinyl aromatic compound, by which the resin can be continuously manufactured with reduced generation of high molecular weight products of the vinyl aromatic compound and insoluble substances from dicyclopentadiene, and at high yield. The manufacturing method includes continuously injecting polymerization raw materials into a preheated solvent in the reaction system, and concurrently ejecting a part of the reaction solution containing the solvent and the polymerization raw materials outside the reaction system, while raising the temperature of the polymerization raw materials. This enables rapid rise of the temperature of the polymerization raw materials by utilizing sensible heat, resulting in reduced generation of insoluble substances. In addition, providing a reaction step following the raw material injection step allows the polymerization reaction to proceed until a desired molecular weight is achieved, resulting in improved yield.

IPC Classes  ?

• C08F 232/08 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings

Abstract

Provided is a polyvinyl ether-based polymer that is useful as a gelling agent.　This polymer has a structural unit represented by formula (2). [In formula (2), R1represents a C1-C5 linear or branched alkanediyl group, R2represents a single bond or a C1-C5 linear or branched alkanediyl group, X represents -C(=O)OH, -C(=O)O-M+, or -C(=O)O-(M+ represents a counter ion), and n is an integer of 0-3.]

IPC Classes  ?

• C08F 8/06 - Oxidation
• C08F 20/00 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride, ester, amide, imide, or nitrile thereof
• C09K 3/00 - Materials not provided for elsewhere

Abstract

[Problem] To provide a method for producing a vinylphosphonic acid monoester from a vinylphosphonic acid diester with high selectivity. [Solution] A method for producing a vinylphosphonic acid monoester represented by general formula (2) (chemical formula 2, wherein R1represents a linear or branched alkyl group having 1 to 4 carbon atoms) from a vinylphosphonic acid diester represented by general formula (1) (chemical formula 1, wherein each of R1and R2 independently represents a linear or branched alkyl group having 1 to 4 carbon atoms) according to the present invention is characterized by comprising a step in which the vinylphosphonic acid monoester is obtained by heating the vinylphosphonic acid diester in the presence of a solvent and a basic substance, and is also characterized in that the amount-of-substance ratio of the basic substance to the vinylphosphonic acid diester is 0.7 to 3.5.

IPC Classes  ?

• C07F 9/40 - Esters thereof

Abstract

A core-shell type polymeric particle may exhibit good dispersibility in an aqueous medium and excellent flame retardance. A core-shell type polymeric particle may include a core including a hydrophobic polymer (c) and a shell including a copolymer having a repeating unit (a) derived from vinyl phosphonic acid or a vinyl phosphonic acid ester and a repeating unit (b) of formula (α): A core-shell type polymeric particle may exhibit good dispersibility in an aqueous medium and excellent flame retardance. A core-shell type polymeric particle may include a core including a hydrophobic polymer (c) and a shell including a copolymer having a repeating unit (a) derived from vinyl phosphonic acid or a vinyl phosphonic acid ester and a repeating unit (b) of formula (α): A core-shell type polymeric particle may exhibit good dispersibility in an aqueous medium and excellent flame retardance. A core-shell type polymeric particle may include a core including a hydrophobic polymer (c) and a shell including a copolymer having a repeating unit (a) derived from vinyl phosphonic acid or a vinyl phosphonic acid ester and a repeating unit (b) of formula (α): wherein Ra is H or a methyl group, Rb is a single bond or a carbonyl group, and ring Q1 is a substituted or unsubstituted 4 to 10 membered nitrogen-containing heterocycle.

IPC Classes  ?

• C08F 275/00 - Macromolecular compounds obtained by polymerising monomers on to polymers of monomers containing phosphorus, selenium, tellurium, or a metal as defined in group

Abstract

[Problem] To provide a method that does not require complicated steps, is simple, and makes it possible to evaluate, with high sensitivity, the dissolution characteristics of a resist polymer. [Solution] This evaluation method for the dissolution characteristics of a resist polymer comprises the following steps (i) to (iii): (i) a step for preparing a test solution by dissolving the resist polymer in a solvent; (ii) a step for dripping the solvent while stirring the test solution and measuring, in real time, the dripping weight of the solvent and a change in the turbidity of the test solution at that time; and (iii) a step for calculating the dripping amount of the solvent until the turbidity of the test solution reaches a prescribed value.

IPC Classes  ?

• G01N 21/59 - Transmissivity
• G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
• G03F 7/16 - Coating processesApparatus therefor
• G03F 7/26 - Processing photosensitive materialsApparatus therefor

Abstract

[Problem] To provide a method that does not require complicated steps, is simple, and makes it possible to evaluate, with high sensitivity, the dissolution characteristics of a resist polymer. [Solution] This evaluation method for the dissolution characteristics of a resist polymer comprises the following steps (i) to (iii): (i) a step for preparing a test solution by dissolving the resist polymer in a solvent; (ii) a step for dripping the solvent while stirring the test solution and measuring, in real time, the dripping weight of the solvent and a change in the turbidity of the test solution at that time; and (iii) a step for calculating the dripping amount of the solvent until the turbidity of the test solution reaches a prescribed value.

IPC Classes  ?

• G03F 7/16 - Coating processesApparatus therefor
• G03F 7/26 - Processing photosensitive materialsApparatus therefor
• G01N 33/00 - Investigating or analysing materials by specific methods not covered by groups
• G01N 21/59 - Transmissivity

Abstract

A method for producing a polyvinylphosphonic acid copolymer may control a rise in internal temperature in the reaction system during polymerization and may allow synthesis of a copolymer as a polymer solution. A method for producing a polyvinylphosphonic acid copolymer may include polymerizing a compound of formula (1) and a compound of formula (2) in presence of a radical polymerization initiator and in a water-containing solvent: 4 are alkoxy groups.

IPC Classes  ?

• C08F 230/02 - Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing phosphorus
• C08F 4/04 - Azo-compounds
• C08F 30/02 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing phosphorus

Abstract

[Problem] To provide a binder composition for negative electrodes, the binder composition enabling a lithium ion secondary battery to achieve a good balance between capacity enhancement and good capacity retention rate. [Solution] A binder composition for negative electrodes of lithium ion secondary batteries according to the present invention is characterized by containing a cellulose-based water-soluble polymer and a vinyl phosphorus-based polymer that is derived from a vinylphosphonic acid or a vinylphosphonic acid ester.

IPC Classes  ?

• H01M 4/62 - Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
• C08L 1/00 - Compositions of cellulose, modified cellulose, or cellulose derivatives
• C08L 43/02 - Homopolymers or copolymers of monomers containing phosphorus
• H01M 4/13 - Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulatorsProcesses of manufacture thereof
• H01M 4/133 - Electrodes based on carbonaceous material, e.g. graphite-intercalation compounds or CFx
• H01M 4/36 - Selection of substances as active materials, active masses, active liquids

Abstract

[Problem] To provide: a composition which is for thick film resist and with which cracks in a resist film are suppressed and a pattern with a favorable surface condition can be formed; and an acetal compound from which the same can be formed. [Solution] Provided are: an acetal compound represented by formula (1) (in the formula, R1 represents a C1-C12 alkyl group, a C5-C12 cycloalkyl group, or a C1-C12 acyl group, n is an integer of 1-5, m represents an integer of 2-4, and Ar is a residue obtained by removing hydrogen atoms from hydroxyl groups in a m-valent polyhydric phenol); and a composition which is for thick film resist and contains the same.

IPC Classes  ?

• C07B 61/00 - Other general methods
• C07C 41/54 - Preparation of compounds having groups by reactions producing groups by addition of compounds to unsaturated carbon-to-carbon bonds
• C07C 43/315 - Compounds having groups containing oxygen atoms singly bound to carbon atoms not being acetal carbon atoms
• C07C 67/29 - Preparation of carboxylic acid esters by modifying the hydroxylic moiety of the ester, such modification not being an introduction of an ester group by introduction of oxygen-containing functional groups
• C07C 69/753 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a ring other than a six-membered aromatic ring of polycyclic acids
• G03F 7/039 - Macromolecular compounds which are photodegradable, e.g. positive electron resists

Abstract

[Problem] To provide: a composition which is for thick film resist and with which cracks in a resist film are suppressed and a pattern with a favorable surface condition can be formed; and an acetal compound from which the same can be formed. [Solution] Provided are: an acetal compound represented by formula (1) (in the formula, R1 represents a C1-C12 alkyl group, a C5-C12 cycloalkyl group, or a C1-C12 acyl group, n is an integer of 1-5, m represents an integer of 2-4, and Ar is a residue obtained by removing hydrogen atoms from hydroxyl groups in a m-valent polyhydric phenol); and a composition which is for thick film resist and contains the same.

IPC Classes  ?

• C07C 41/54 - Preparation of compounds having groups by reactions producing groups by addition of compounds to unsaturated carbon-to-carbon bonds
• C07C 43/315 - Compounds having groups containing oxygen atoms singly bound to carbon atoms not being acetal carbon atoms
• C07B 61/00 - Other general methods
• G03F 7/039 - Macromolecular compounds which are photodegradable, e.g. positive electron resists
• C07C 67/29 - Preparation of carboxylic acid esters by modifying the hydroxylic moiety of the ester, such modification not being an introduction of an ester group by introduction of oxygen-containing functional groups
• C07C 69/753 - Esters of carboxylic acids having an esterified carboxyl group bound to a carbon atom of a ring other than a six-membered aromatic ring of polycyclic acids

Abstract

[Problem] To provide a method for producing an alkenyl phosphorus compound. [Solution] A method for producing an alkenyl phosphorus compound according to the present invention produces a specific alkenyl phosphorus compound by reacting a specific phosphorus compound and a specific alkynyl compound in the presence of a transition metal complex, a Lewis acid, and a low-polarity additive.

IPC Classes  ?

• C07B 61/00 - Other general methods
• C07F 9/40 - Esters thereof

Abstract

[Problem] The present invention provides a phosphorus compound refining method that makes it possible to suppress generation of a by-product during distillation. [Solution] The phosphorous compound refining method of the present invention comprises: a step for obtaining a mixture that includes a specified phosphorous compound, a specified alkenyl phosphorous compound, and a transition metal complex; and a step for obtaining a first distillate part, which includes the specified phosphorous compound, by adding a Lewis acid to the abovementioned obtained mixture and thereafter performing distillation.

IPC Classes  ?

• C07F 9/142 - Esters of phosphorous acids with hydroxyalkyl compounds without further substituents on alkyl

Abstract

The present invention provides a polymer comprising a structural unit derived from p-hydroxystyrene and a structural unit having a structure in which a carboxylic acid is protected by an acetal group, wherein the structural unit generated by elimination of the acetal group or migration of the acetal group during the production process is extremely small; and a process for producing the same. The present invention provides a polymer comprising a structural unit derived from p-hydroxystyrene and a structural unit having a structure in which a carboxylic acid is protected by an acetal group, wherein the structural unit generated by elimination of the acetal group or migration of the acetal group during the production process is extremely small; and a process for producing the same. A solution containing a polymer comprising a structural unit derived from p-acetoxystyrene and a structural unit having a structure in which a carboxylic acid is protected by an acetal group is subjected to deprotection reaction at 50° C. or lower in the presence of a base in which a pKa of a conjugated acid is 12 or more.

IPC Classes  ?

• C08F 220/28 - Esters containing oxygen in addition to the carboxy oxygen containing no aromatic rings in the alcohol moiety
• G03F 7/039 - Macromolecular compounds which are photodegradable, e.g. positive electron resists
• G03F 7/038 - Macromolecular compounds which are rendered insoluble or differentially wettable
• C08F 8/12 - Hydrolysis

Abstract

Provided is a method for producing isobutyl vinyl ether from isobutyl alcohol and acetylene at high purity and with excellent efficiency.　The present invention is a method for producing isobutyl vinyl ether using isobutyl alcohol as a raw-material alcohol, the production method including the following steps A1, A2, and A3.　(Step A1) A vinyl ether synthesis step for reacting isobutyl alcohol and acetylene to obtain a mixture that includes unreacted isobutyl alcohol and isobutyl vinyl ether (Step A2) An acetalization step for reacting the unreacted isobutyl alcohol and isobutyl vinyl ether within the mixture in the presence of an acid catalyst to achieve conversion to acetaldehyde diisobutyl acetal (Step A3) A distillation step for removing the acetaldehyde diisobutyl acetal by distillation from the acetal-containing mixture obtained in step A2

IPC Classes  ?

• C07C 41/08 - Preparation of ethers by addition of compounds to unsaturated compounds by addition of organic compounds only to carbon-to-carbon triple bonds
• C07C 41/42 - SeparationPurificationStabilisationUse of additives by change of physical state, e.g. by crystallisation by distillation
• C07C 41/44 - SeparationPurificationStabilisationUse of additives by treatment giving rise to a chemical modification
• C07C 43/16 - Vinyl ethers
• C07B 61/00 - Other general methods

Abstract

Provided is a method for producing a (2-methoxyethyl) vinyl ether at a high level of purity from 2-methoxyethanol and acetylene.　A method for producing a (2-methoxyethyl) vinyl ether that treats 2-methoxyethanol as a source material alcohol, and includes the following steps A1, A2, and A3.　(Step A1) A vinyl ether synthesis step in which 2-methoxyethanol and acetylene are reacted to obtain a mixture that includes unreacted 2-methoxyethanol and the (2-methoxyethyl) vinyl ether.　(Step A2) An acetalization step in which the unreacted 2-methoxyethanol and the (2-methoxyethyl) vinyl ether in the mixture are reacted in the presence of an acid catalyst and converted into acetaldehyde bis(2-methoxyethyl) acetal.　(Step A3) A distillation step in which distillation is used to remove the acetaldehyde bis(2-methoxyethyl) acetal from the acetal-including mixture that was obtained in step A2.

IPC Classes  ?

• C07C 41/30 - Preparation of ethers by reactions not forming ether-oxygen bonds by increasing the number of carbon atoms, e.g. by oligomerisation
• C07C 41/42 - SeparationPurificationStabilisationUse of additives by change of physical state, e.g. by crystallisation by distillation
• C07C 43/16 - Vinyl ethers
• C07B 61/00 - Other general methods

Abstract

[Problem] [Problem] To provide an alkenyl phosphorus compound. [Problem] To provide an alkenyl phosphorus compound. [Means to Solve the Problem] [Problem] To provide an alkenyl phosphorus compound. [Means to Solve the Problem] The method for manufacturing an alkenyl phosphorus compound according to the present invention is a method in which a specific phosphorus compound and a specific alkynyl compound are reacted in the presence of a transition metal complex and a Lewis acid, thereby giving an alkenyl phosphorus compound.

IPC Classes  ?

• C07F 9/53 - Organo-phosphine oxidesOrgano-phosphine sulfides
• B01J 31/24 - Phosphines

Abstract

[Problem] To provide a complex compound useful as a catalyst for a hydrophosphorylation reaction and a process for producing the same. [Means to Solve the Problem] A complex compound of the present invention is a complex compound of a resin fine particle represented by the following general formula (1): 4 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group, and based on the total of 100% of the values of n and m, the value of n is within the range of 20 to 100%, the value of m is within the range of 0 to 80%, and * represents bonding with the surface of the resin fine particle and a transition metal.

IPC Classes  ?

• C08J 9/28 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum
• B01J 31/16 - Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
• B01J 31/24 - Phosphines

Abstract

A cross-linked polymer including a structure wherein at least a portion of phenolic hydroxyl groups in the polymer is protected by a group represented by the following formula (1): 1 represents an alkyl group having 1 to 5 carbons and n represents an integer from 1 to 5; and * represents a bond part of the phenolic hydroxyl group to a residue other than a hydrogen atom, and a structure wherein at least a portion of phenolic hydroxyl groups in the polymer is protected by a group represented by the following formula (2): 2 represents a divalent saturated hydrocarbon group having 2 to 17 carbons, containing an aromatic ring; and * represents a bond part of the phenolic hydroxyl group to a residue other than a hydrogen atom, and the polymers are cross-linked to each other.

IPC Classes  ?

• G03F 7/039 - Macromolecular compounds which are photodegradable, e.g. positive electron resists
• C08F 257/00 - Macromolecular compounds obtained by polymerising monomers on to polymers of aromatic monomers as defined in group
• C08G 8/36 - Chemically modified polycondensates by etherifying
• G03F 7/004 - Photosensitive materials
• G03F 7/038 - Macromolecular compounds which are rendered insoluble or differentially wettable
• G03F 7/16 - Coating processesApparatus therefor
• G03F 7/32 - Liquid compositions therefor, e.g. developers

Abstract

A method of purifying a divinyl ether compound having an alkylene skeleton may take place with low energy and in a simplified manner. Such a method for producing a divinyl ether compound may include: reacting a compound of formula (1) A method of purifying a divinyl ether compound having an alkylene skeleton may take place with low energy and in a simplified manner. Such a method for producing a divinyl ether compound may include: reacting a compound of formula (1) A method of purifying a divinyl ether compound having an alkylene skeleton may take place with low energy and in a simplified manner. Such a method for producing a divinyl ether compound may include: reacting a compound of formula (1) wherein R1 is an alkylene group having 4 to 20 carbon atoms, with acetylene by using an alkali metal catalyst; and purifying the divinyl ether compound of formula (2) A method of purifying a divinyl ether compound having an alkylene skeleton may take place with low energy and in a simplified manner. Such a method for producing a divinyl ether compound may include: reacting a compound of formula (1) wherein R1 is an alkylene group having 4 to 20 carbon atoms, with acetylene by using an alkali metal catalyst; and purifying the divinyl ether compound of formula (2) A method of purifying a divinyl ether compound having an alkylene skeleton may take place with low energy and in a simplified manner. Such a method for producing a divinyl ether compound may include: reacting a compound of formula (1) wherein R1 is an alkylene group having 4 to 20 carbon atoms, with acetylene by using an alkali metal catalyst; and purifying the divinyl ether compound of formula (2) which is obtained in the reacting, without an extraction.

IPC Classes  ?

• C07C 41/08 - Preparation of ethers by addition of compounds to unsaturated compounds by addition of organic compounds only to carbon-to-carbon triple bonds
• C07C 41/42 - SeparationPurificationStabilisationUse of additives by change of physical state, e.g. by crystallisation by distillation
• B01D 3/10 - Vacuum distillation

Abstract

A method can produce a divinyl ether compound having an alkylene skeleton from an alkanediol and acetylene at a rapid production rate and a high reaction yield. In the production method, a compound of formula (1) A method can produce a divinyl ether compound having an alkylene skeleton from an alkanediol and acetylene at a rapid production rate and a high reaction yield. In the production method, a compound of formula (1) A method can produce a divinyl ether compound having an alkylene skeleton from an alkanediol and acetylene at a rapid production rate and a high reaction yield. In the production method, a compound of formula (1) wherein R1 is an alkylene group having 4 to 20 carbon atoms, may be reacted with acetylene in the presence of an alkali metal catalyst to produce a compound of formula (2) A method can produce a divinyl ether compound having an alkylene skeleton from an alkanediol and acetylene at a rapid production rate and a high reaction yield. In the production method, a compound of formula (1) wherein R1 is an alkylene group having 4 to 20 carbon atoms, may be reacted with acetylene in the presence of an alkali metal catalyst to produce a compound of formula (2) A method can produce a divinyl ether compound having an alkylene skeleton from an alkanediol and acetylene at a rapid production rate and a high reaction yield. In the production method, a compound of formula (1) wherein R1 is an alkylene group having 4 to 20 carbon atoms, may be reacted with acetylene in the presence of an alkali metal catalyst to produce a compound of formula (2) and the reaction may be performed in the absence of a solvent.

IPC Classes  ?

• C07C 41/09 - Preparation of ethers by dehydration of compounds containing hydroxy groups

Abstract

[Problem] To provide a polymer material that is biocompatible and, at the same time, has cancer cell adhesion properties. [Solution] A composition for cancer cell adhesion according to the present invention contains a biocompatible copolymer, said copolymer comprising at least one kind of repeating unit (A) represented by formula (1) (wherein R1represents a methyl group or an ethyl group) and at least one kind of repeating unit (B) represented by formula (2) (wherein R2 represents an aliphatic hydrocarbon group).

IPC Classes  ?

• C08F 216/14 - Monomers containing only one unsaturated aliphatic radical
• C08F 216/18 - Acyclic compounds
• A61L 31/10 - Macromolecular materials
• G01N 33/48 - Biological material, e.g. blood, urineHaemocytometers

Abstract

[Problem] To provide: a 4-hydroxystyrene solution that is preferable as a raw material for commercial-scale production of 4-hydroxystyrene-based polymers, and has a high purity and good storage stability; and a production method for the solution. [Solution] The production method for a 4-hydroxystyrene solution according to the present invention comprises steps (i)-(iv): (i) a deprotection step for bringing 4-acetoxystyrene into contact with a base in a solvent to generate 4-hydroxystyrene; (ii) a neutralization step for neutralizing the deprotected solution containing 4-hydroxystyrene by adding an acid to the solution; (iii) a step for washing the neutralized solution containing 4-hydroxystyrene with water; and (iv) a solvent substitution step for adding a solvent in which 4-hydroxystyrene can dissolve to the solution containing 4-hydroxystyrene, and performing distillation at 40°C or lower to remove excess solvent and components other than 4-hydroxystyrene.

IPC Classes  ?

• C07C 37/56 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions decreasing the number of carbon atoms by replacing a carboxyl or aldehyde group by a hydroxy group
• C07C 37/01 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis
• C07C 37/74 - SeparationPurificationStabilisationUse of additives by physical treatment by distillation
• C07C 39/19 - Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring monocyclic with unsaturation outside the aromatic ring containing carbon-to-carbon double bonds but no carbon-to-carbon triple bonds
• C07C 39/20 - Hydroxy styrenes
• C08F 12/22 - Oxygen
• C08F 212/14 - Monomers containing only one unsaturated aliphatic radical containing one ring substituted by hetero atoms or groups containing hetero atoms

Abstract

[Problem] To provide: a 4-hydroxystyrene solution that is preferable as a raw material for commercial-scale production of 4-hydroxystyrene-based polymers, and has a high purity and good storage stability; and a production method for the solution. [Solution] The production method for a 4-hydroxystyrene solution according to the present invention comprises steps (i)-(iv): (i) a deprotection step for bringing 4-acetoxystyrene into contact with a base in a solvent to generate 4-hydroxystyrene; (ii) a neutralization step for neutralizing the deprotected solution containing 4-hydroxystyrene by adding an acid to the solution; (iii) a step for washing the neutralized solution containing 4-hydroxystyrene with water; and (iv) a solvent substitution step for adding a solvent in which 4-hydroxystyrene can dissolve to the solution containing 4-hydroxystyrene, and performing distillation at 40°C or lower to remove excess solvent and components other than 4-hydroxystyrene.

IPC Classes  ?

• C07C 37/01 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by replacing functional groups bound to a six-membered aromatic ring by hydroxy groups, e.g. by hydrolysis
• C07C 37/56 - Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring by reactions decreasing the number of carbon atoms by replacing a carboxyl or aldehyde group by a hydroxy group
• C07C 37/74 - SeparationPurificationStabilisationUse of additives by physical treatment by distillation
• C07C 39/19 - Compounds having at least one hydroxy or O-metal group bound to a carbon atom of a six-membered aromatic ring monocyclic with unsaturation outside the aromatic ring containing carbon-to-carbon double bonds but no carbon-to-carbon triple bonds
• C07C 39/20 - Hydroxy styrenes
• C08F 12/22 - Oxygen
• C08F 212/14 - Monomers containing only one unsaturated aliphatic radical containing one ring substituted by hetero atoms or groups containing hetero atoms

Abstract

[Problem to be Solved] [Problem to be Solved] Provided is a polyvinylidene fluoride resin-made porous membrane having excellent hydrophilicity, permeability, and fouling resistance and having suppressed elution of vinyl ether copolymer by using a small amount of vinyl ether copolymer. [Problem to be Solved] Provided is a polyvinylidene fluoride resin-made porous membrane having excellent hydrophilicity, permeability, and fouling resistance and having suppressed elution of vinyl ether copolymer by using a small amount of vinyl ether copolymer. [Means to Solve the Problem] [Problem to be Solved] Provided is a polyvinylidene fluoride resin-made porous membrane having excellent hydrophilicity, permeability, and fouling resistance and having suppressed elution of vinyl ether copolymer by using a small amount of vinyl ether copolymer. [Means to Solve the Problem] The porous membrane according to the invention comprises a polyvinylidene fluoride resin as a matrix material and a vinyl ether copolymer, wherein the vinyl ether copolymer is a copolymer of an oxyethylene group-containing vinyl ether monomer and a hydrocarbon group-containing vinyl ether monomer.

IPC Classes  ?

• B01D 71/34 - Polyvinylidene fluoride
• B01D 61/14 - UltrafiltrationMicrofiltration
• B01D 69/12 - Composite membranesUltra-thin membranes
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• B01D 71/38 - PolyalkenylalcoholsPolyalkenylestersPolyalkenylethersPolyalkenylaldehydesPolyalkenylketonesPolyalkenylacetalsPolyalkenylketals

Abstract

[Problem] To provide a method which is for producing a copolymer resin of dicyclopentadiene and a vinyl aromatic compound, and by which a resin can be continuously produced at high yield while suppressing the generation of a high-molecular-weight substance of the vinyl aromatic compound or a sparingly soluble substance of dicyclopentadiene. [Solution] In a production method according to the present invention, it has been found that, by introducing a raw material feeding step for continuously feeding polymerization raw materials to a preheated solvent in a reaction system and raising the temperature of the polymerization raw materials while discharging a part of a reaction solution containing the solvent and the polymerization raw materials to the outside of the reaction system, the temperature of the polymerization raw materials can be rapidly raised using sensible heat, and thus the generation of sparingly soluble substances can be suppressed. Moreover, by providing a reaction step after the raw material feeding step, a polymerization reaction is performed until the molecular weight reached a desired value, to improve the yield.

IPC Classes  ?

• C08F 212/06 - Hydrocarbons
• C08F 232/08 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings
• C08F 2/06 - Organic solvent

Abstract

[Problem] To provide a method which is for producing a copolymer resin of dicyclopentadiene and a vinyl aromatic compound, and by which a resin can be continuously produced at high yield while suppressing the generation of a high-molecular-weight substance of the vinyl aromatic compound or a sparingly soluble substance of dicyclopentadiene. [Solution] In a production method according to the present invention, it has been found that, by introducing a raw material feeding step for continuously feeding polymerization raw materials to a preheated solvent in a reaction system and raising the temperature of the polymerization raw materials while discharging a part of a reaction solution containing the solvent and the polymerization raw materials to the outside of the reaction system, the temperature of the polymerization raw materials can be rapidly raised using sensible heat, and thus the generation of sparingly soluble substances can be suppressed. Moreover, by providing a reaction step after the raw material feeding step, a polymerization reaction is performed until the molecular weight reached a desired value, to improve the yield.

IPC Classes  ?

• C08F 2/06 - Organic solvent
• C08F 6/06 - Treatment of polymer solutions
• C08F 212/06 - Hydrocarbons
• C08F 232/08 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings

Abstract

[Problem] To provide a method for producing an alkenyl phosphorus compound. [Solution] A method for producing an alkenyl phosphorus compound according to the present invention is for producing a specific alkenyl phosphorus compound by reacting a specific phosphorus compound and a specific alkynyl compound in the presence of a transition metal complex and a Lewis acid.

IPC Classes  ?

• C07F 9/40 - Esters thereof
• C07F 9/53 - Organo-phosphine oxidesOrgano-phosphine sulfides

Abstract

[Problem] To provide: a complex compound which is useful as a catalyst for a hydrophosphorylation reaction; and a production method therefor. [Solution] A complex compound according to the present invention is a complex compound of a transition metal and resin fine particles represented by general formula (1) (in general formula (1), R1represents a substituted or unsubstituted hydrocarbon group, R2represents a substituted or unsubstituted alkyl group or a substituted or unsubstituted aryl group, R3and R4 each independently represent a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted aryl group, the value of n and the value of m are in the range of 20-100% and in the range of 0-80%, respectively, with respect to 100% of the sum of the values of n and m, and * is a part bonded to the surface of a resin fine particle).

IPC Classes  ?

• C08F 8/40 - Introducing phosphorus atoms or phosphorus-containing groups
• B01J 31/24 - Phosphines

Abstract

[Object] To provide a method for producing a vinyl ether polymer containing a hydrocarbon group in a stable and efficient manner, wherein decomposition of the monomer and generation of polyacetal are suppressed. [Means for solving problem] The method for producing a vinyl ether polymer containing a hydrocarbon group according to the present invention comprises the step of polymerizing vinyl ether represented by the following formula (1): in the presence of water as a polymerization solvent and an organic azo-based compound as a radical polymerization initiator, under pH of 6 or more.

IPC Classes  ?

• C08F 16/18 - Acyclic compounds
• C08F 16/22 - Carbocyclic compounds
• C08F 2/10 - Aqueous solvent
• C08F 4/04 - Azo-compounds
• C08K 3/22 - OxidesHydroxides of metals
• C08K 5/17 - AminesQuaternary ammonium compounds
• C08K 5/23 - Azo-compounds

Abstract

1 represents a methyl group or an ethyl group and n represents an integer of 1 to 10), and further containing a hydrophobic group, a protein adsorption preventing film using the protein adsorption preventing agent, and a medical tool including the protein adsorption preventing film.

IPC Classes  ?

• C08F 297/00 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer
• A61L 31/10 - Macromolecular materials
• A61L 31/14 - Materials characterised by their function or physical properties
• C08F 216/14 - Monomers containing only one unsaturated aliphatic radical
• C09D 129/10 - Homopolymers or copolymers of unsaturated ethers
• C09D 153/00 - Coating compositions based on block copolymers containing at least one sequence of a polymer obtained by reactions only involving carbon-to-carbon unsaturated bondsCoating compositions based on derivatives of such polymers

Abstract

[Problem] To provide a crosslinked polymer for high-sensitivity lithography. [Solution] This crosslinked polymer for resists, which changes in solubility in developing solutions by the action of an acid, contains phenolic hydroxyl groups, at least some of which have a structure formed by protection with a group represented by formula (1) (wherein R1represents an alkyl group having 1-5 carbon atoms, n is an integer of 1-5, and * indicates the site of bonding to the residue formed by removing the hydrogen atom from the phenolic hydroxyl group) and at least some of which have been protected with a group represented by formula (2) (wherein R2 represents either a divalent saturated hydrocarbon group having 2-17 carbon atoms and optionally including an aliphatic cyclic group or a divalent hydrocarbon group having 6-17 carbon atoms and including an aromatic ring and * indicates the site of bonding to the residue formed by removing the hydrogen atom from the phenolic hydroxyl group) to make the polymer have a structure in which polymer chains have been crosslinked to one another.

IPC Classes  ?

• C08F 8/00 - Chemical modification by after-treatment
• C08G 8/36 - Chemically modified polycondensates by etherifying
• G03F 7/039 - Macromolecular compounds which are photodegradable, e.g. positive electron resists

Abstract

Provided are core-shell-type polymer fine particles that exhibit excellent dispersibility in aqueous media and have exceptional flame retardance.　Core-shell-type polymer fine particles in which: the shell portion includes repeating units (a) derived from vinylphosphonic acid or a vinylphosphonic acid ester, and repeating units (b) represented by formula (α); and the core portion includes a hydrophobic polymer (c). [In formula (α), Rarepresents a hydrogen atom or a methyl group, Rbrepresents a single bond or a carbonyl group, and ring Q1 represents a substituted or unsubstituted 4- to 10-membered ring nitrogen-containing heterocycle.]

IPC Classes  ?

• C08F 275/00 - Macromolecular compounds obtained by polymerising monomers on to polymers of monomers containing phosphorus, selenium, tellurium, or a metal as defined in group

Abstract

[Problem] The present invention provides: a polymer which comprises a structural unit derived from p-hydroxystyrene and a structural unit having such a structure that a carboxylic acid is protected by an acetal group, and which contains an extremely small amount of a structural unit generated as the result of the detachment of the acetal group or the migration of the acetal group during the process of the production of the polymer; and a method for producing the polymer. [Solution] A solution which contains a polymer comprising a structural unit derived from a p-acetoxystyrene and a structural unit having such a structure that a carboxylic acid is protected by an acetal group is subjected to a deprotection reaction at 50? or lower in the presence of a base for which a conjugate acid has a pKa value of 12 or more.

IPC Classes  ?

• C08F 8/12 - Hydrolysis
• C08F 212/14 - Monomers containing only one unsaturated aliphatic radical containing one ring substituted by hetero atoms or groups containing hetero atoms
• C08F 220/26 - Esters containing oxygen in addition to the carboxy oxygen
• G03F 7/004 - Photosensitive materials

Abstract

[Problem] The present invention provides: a polymer which comprises a structural unit derived from p-hydroxystyrene and a structural unit having such a structure that a carboxylic acid is protected by an acetal group, and which contains an extremely small amount of a structural unit generated as the result of the detachment of the acetal group or the migration of the acetal group during the process of the production of the polymer; and a method for producing the polymer. [Solution] A solution which contains a polymer comprising a structural unit derived from a p-acetoxystyrene and a structural unit having such a structure that a carboxylic acid is protected by an acetal group is subjected to a deprotection reaction at 50℃ or lower in the presence of a base for which a conjugate acid has a pKa value of 12 or more.

IPC Classes  ?

• C08F 8/12 - Hydrolysis
• C08F 212/14 - Monomers containing only one unsaturated aliphatic radical containing one ring substituted by hetero atoms or groups containing hetero atoms
• C08F 220/26 - Esters containing oxygen in addition to the carboxy oxygen
• G03F 7/039 - Macromolecular compounds which are photodegradable, e.g. positive electron resists

Abstract

Provided is a method for producing a hydrogenated petroleum resin having good compatibility with a base polymer and a good hue under a hydrogen pressure of 4 MPaG or less. A method for producing a hydrogenated petroleum resin, includes a hydrogenation step of hydrogenating a polymerization product of dicyclopentadiene and a vinyl aromatic compound in the presence of a catalyst, in which hydrogenation step is performed under conditions (A) to (C): (A) an amount of the catalyst used: 0.125 to 0.4 parts by mass relative to 100 parts by mass of a resin in the polymerization product, (V) a reaction pressure: 4 MPaG or less, and (C) a reaction temperature: 240° C. or higher.

IPC Classes  ?

• C08F 8/04 - Reduction, e.g. hydrogenation
• C08F 240/00 - Copolymers of hydrocarbons and mineral oils, e.g. petroleum resins
• C08F 232/08 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings
• C08F 4/44 - MetalsMetal hydridesMetallo-organic compoundsUse thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths, or actinides
• C08F 4/80 - MetalsMetal hydridesMetallo-organic compoundsUse thereof as catalyst precursors selected from metals not provided for in group selected from iron group metals or platinum group metals
• C08F 232/06 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having no condensed rings having two or more carbon-to-carbon double bonds
• C08F 212/08 - Styrene

Abstract

Provided is a new method that effectively reduces odor components that are present in a hydrogenated petroleum resin, and adjusts a softening point to an appropriate range for exhibiting an adhesive performance. A method for deodorizing a hydrogenated petroleum resin, includes stripping a hydrogenated petroleum resin at a gas flow rate of 1 to 45 VVM.

IPC Classes  ?

• C08F 6/10 - Removal of volatile materials, e.g. monomers, solvents
• C08F 8/04 - Reduction, e.g. hydrogenation
• C08F 212/08 - Styrene
• C08F 232/04 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having no condensed rings having one carbon-to-carbon double bond
• C08F 232/08 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings
• C08F 240/00 - Copolymers of hydrocarbons and mineral oils, e.g. petroleum resins

Abstract

[Problem to be Solved] To Provide a method for producing an acid-decomposable polymer having a reduced metal ion content, which suppresses decomposition and deprotection of the acid-decomposable polymer. [Means to Solve the Problem] passing the polymer solution through the washed acidic cation exchanger to reduce the metal ion content of the polymer.

IPC Classes  ?

• B01J 39/05 - Processes using organic exchangers in the strongly acidic form
• C08G 63/90 - PurificationDrying
• C08G 63/66 - Polyesters containing oxygen in the form of ether groups
• G03F 7/004 - Photosensitive materials
• G03F 7/039 - Macromolecular compounds which are photodegradable, e.g. positive electron resists

Abstract

Provided are core/shell type polymeric particles including a shell and a core, in which the particles can be produced by a method using neither a surfactant nor a high-molecular-weight azo initiator, exhibit satisfactory dispersibility in aqueous medium, and are useful as, for instance, a dispersant, a metal-protecting stabilizer, or a metal adsorbent. A core/shell type polymeric particle including a shell including a hydrophilic vinyl ether polymer (a) and a core including a hydrophobic polymer (b).

IPC Classes  ?

• C08L 29/10 - Homopolymers or copolymers of unsaturated ethers
• C08F 2/22 - Emulsion polymerisation
• C08F 261/06 - Macromolecular compounds obtained by polymerising monomers on to polymers of oxygen-containing monomers as defined in group on to polymers of unsaturated ethers

Abstract

Provided is a compound that can be used for a resin for a resist having excellent sensitivity, resolution, and etching resistance, or the like, by a compound represented by the following formula (1): 2 represents an aliphatic hydrocarbon group having 1 to 6 carbon atoms, m represents an integer of 0 to 5, and n represents an integer of 0 to 4).

IPC Classes  ?

• C07C 69/602 - Dicarboxylic acid esters having at least two carbon-to-carbon double bonds
• C08F 22/26 - Esters of unsaturated alcohols
• C08F 12/24 - Phenols or alcohols
• G03F 7/027 - Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds

Abstract

Provided is a compound that can be used for a resin for a resist having excellent sensitivity, resolution, and etching resistance, or the like, by a compound represented by the following formula (1): 2 represents an aliphatic hydrocarbon group having 1 to 6 carbon atoms, m represents an integer of 0 to 5, and n represents an integer of 0 to 4).

IPC Classes  ?

• C08F 283/01 - Macromolecular compounds obtained by polymerising monomers on to polymers provided for in subclass on to unsaturated polyesters
• C07C 69/013 - Esters of alcohols having the esterified hydroxy group bound to a carbon atom of a ring other than a six-membered aromatic ring
• C07C 69/608 - Esters of carboxylic acids having a carboxyl group bound to an acyclic carbon atom and having a ring other than a six-membered aromatic ring in the acid moiety
• C08F 22/10 - Esters
• C08F 122/10 - Esters
• C08F 222/10 - Esters
• C08F 290/08 - Macromolecular compounds obtained by polymerising monomers on to polymers modified by introduction of aliphatic unsaturated end or side groups on to polymers modified by introduction of unsaturated side groups
• C08L 33/14 - Homopolymers or copolymers of esters of esters containing halogen, nitrogen, sulfur, or oxygen atoms in addition to the carboxy oxygen
• G03F 7/004 - Photosensitive materials
• C08F 2/48 - Polymerisation initiated by wave energy or particle radiation by ultraviolet or visible light

Abstract

To provide a novel production method for a hydrogenated petroleum resin that does not cause filter clogging and is also capable of suppressing a significant decrease in catalytic activity in hydrogenation in a production method for a dicyclopentadiene/vinyl aromatic compound-based hydrogenated resin to be used as a tackifier. A production method for a dicyclopentadiene/vinyl aromatic compound-based hydrogenated petroleum resin, in which a reaction product obtained by reacting a dicyclopentadiene with a vinyl aromatic compound is subjected to thermal polymerization, thereby obtaining a thermal polymerization reaction product, followed by hydrogenation thereof, characterized in that as the thermal polymerization reaction product, an oligomer-removed thermal polymerization reaction product obtained by removing a dicyclopentadiene oligomer from the thermal polymerization reaction product is used as a hydrogenation raw material.

IPC Classes  ?

• C08F 32/08 - Homopolymers or copolymers of cyclic compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings
• C08K 3/34 - Silicon-containing compounds

Abstract

[Problem] To provide a method for producing a phosphorus compound, in which a reaction proceeds under relatively mild reaction conditions. [Solution] A method for producing a phosphorus compound according to the present invention comprises a step wherein a specific organic phosphorus compound and an alkali metal dispersion are reacted with each other in an organic solvent.

IPC Classes  ?

• C07F 9/50 - Organo-phosphines

Abstract

[Problem] The present invention addresses the problem of providing a simple method for producing a vinyl ether polymer, which does not use both of a metal catalyst and an organic solvent, and which does not require a low-temperature reaction. [Solution] A method for producing a vinyl ether polymer, which comprises a step wherein at least one vinyl ether monomer represented by general formula (1) (wherein R1represents an alkyl group having 1-3 carbon atoms; and n represents an integer of 1-10) and/or at least one vinyl ether monomer represented by general formula (2) (wherein R2 represents an aliphatic hydrocarbon group having 1-10 carbon atoms, an alicyclic hydrocarbon group or an allyl group) is polymerized in the absence of a solvent, while using an onium salt as a polymerization initiator.

IPC Classes  ?

• C08F 16/18 - Acyclic compounds
• C08F 4/00 - Polymerisation catalysts

Abstract

[Problem] To provide a porous film of a polyvinylidene fluoride resin wherein a small amount of a vinyl ether copolymer is used so that high hydrophilicity, high water permeability and excellent fouling resistance are obtained and the elution of the vinyl ether copolymer is prevented. [Solution] The porous film according to the present invention comprises a polyvinylidene fluoride resin serving as a base material and a vinyl ether copolymer, wherein the vinyl ether copolymer is a copolymer of an oxyethylene group-containing vinyl ether monomer with a hydrocarbon group-containing vinyl ether monomer.

IPC Classes  ?

• B01D 71/34 - Polyvinylidene fluoride
• B01D 71/38 - PolyalkenylalcoholsPolyalkenylestersPolyalkenylethersPolyalkenylaldehydesPolyalkenylketonesPolyalkenylacetalsPolyalkenylketals
• C08J 9/28 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof by elimination of a liquid phase from a macromolecular composition or article, e.g. drying of coagulum

Abstract

[Problem] To produce and provide a polymer for resists with high accuracy, said polymer for resists having a high alkali dissolution rate and being useful for a thick resist. [Solution] A polymer for resists, the solubility of which in a developer liquid is changed by the action of an acid, and which has a structure wherein at least some of the phenolic hydroxyl groups in the polymer are protected by groups represented by formula (1). (In formula (1), R1 represents an alkyl group having 1-5 carbon atoms or a cycloalkyl group having 3-6 carbon atoms; n represents an integer of 1-5; and * represents a binding site to a residue that is obtained by removing a hydrogen atom from a phenolic hydroxyl group.)

IPC Classes  ?

• C08F 8/00 - Chemical modification by after-treatment
• G03F 7/039 - Macromolecular compounds which are photodegradable, e.g. positive electron resists

Abstract

The present invention provides a method for producing a polyvinylphosphonic acid copolymer, which is capable of controlling the internal temperature increase in the reaction system during the polymerization reaction, and by which a copolymer is synthesized in the form of a polymer solution.　A method for producing a polyvinylphosphonic acid copolymer, which comprises a polymerization step wherein a compound represented by formula (1) and a compound represented by formula (2) are polymerized in the presence of a radical polymerization initiator in a hydrous solvent. (In formula (1), each of R1and R2independently represents –OH, -O-or –O-M+(wherein M+represents a counter ion).) (In formula (2), R3represents –OH, -O-, –O-M+(wherein M+represents a counter ion) or a substituted or unsubstituted alkoxy group having 1-10 carbon atoms; and R4represents a substituted or unsubstituted alkoxy group having 1-10 carbon atoms.　In cases where R3and R4are both alkoxy groups, R3and R4 may combine with each other to form a ring together with an adjacent phosphorus atom.)

IPC Classes  ?

• C08F 4/04 - Azo-compounds
• C08F 230/02 - Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing phosphorus

Abstract

A method for producing a vinyl ether polymer containing an oxyethylene chain is provided, including a the step of polymerizing vinyl ether represented by formula (1) in the presence of water as a polymerization solvent, a basic compound as an additive, and an organic azo-based compound as a radical polymerization initiator, and in pH of 5 or more, and the amount of the basic compound used is 0.01 to 0.5 mol % based on an amount of the vinyl ether. Formula (1) is wherein R1 represents an alkyl group having 1 to 3 carbons, and n represents an integer from 1 to 10.

IPC Classes  ?

• C08F 16/26 - Monomers containing oxygen atoms in addition to the ether oxygen
• C08F 2/10 - Aqueous solvent
• C08K 5/23 - Azo-compounds
• C08F 2/38 - Polymerisation using regulators, e.g. chain terminating agents

Abstract

Provided is a method by which a divinyl ether compound having an alkylene skeleton can be produced from an alkane diol and acetylene at a high production speed and a high reaction yield. In this production method, a compound represented by formula (2) is produced by reacting a compound represented by formula (1) with acetylene using an alkali metal catalyst, and the reaction is carried out in the absence of a solvent. [In formula (1), R1denotes an alkylene group having 4-20 carbon atoms.] [In formula (2), R1is defined the same as R1 in formula (1).]

IPC Classes  ?

• C07C 41/08 - Preparation of ethers by addition of compounds to unsaturated compounds by addition of organic compounds only to carbon-to-carbon triple bonds
• C07C 43/16 - Vinyl ethers
• C07B 61/00 - Other general methods
• B01J 23/04 - Alkali metals

Abstract

Provided is a new means by which purification of a divinyl ether compound having an alkylene skeleton can be achieved using less energy and in a simpler manner. This method for producing a divinyl ether compound includes a step A for reacting a compound represented by formula (1) with acetylene using an alkali metal catalyst and a step B for purifying the a divinyl ether compound represented by formula (2), which was obtained in step A, without carrying out extraction. [In formula (1), R1denotes an alkylene group having 4-20 carbon atoms.] [In formula (2), R1is defined the same as R1in formula (1).]

IPC Classes  ?

• C07C 41/08 - Preparation of ethers by addition of compounds to unsaturated compounds by addition of organic compounds only to carbon-to-carbon triple bonds
• C07C 41/36 - SeparationPurificationStabilisationUse of additives by solid-liquid treatmentSeparationPurificationStabilisationUse of additives by chemisorption
• C07C 41/42 - SeparationPurificationStabilisationUse of additives by change of physical state, e.g. by crystallisation by distillation
• C07C 43/16 - Vinyl ethers
• C07B 61/00 - Other general methods
• B01J 23/04 - Alkali metals

Abstract

[Problem] To provide a stable and efficient method for producing a hydrocarbon group-containing vinyl ether polymer, which is capable of suppressing decomposition of monomers and generation of polyacetals. [Solution] A method for producing a hydrocarbon group-containing vinyl ether polymer according to the present invention comprises a step wherein a vinyl ether represented by formula (1) (wherein R1 represents an aliphatic hydrocarbon group having 1-10 carbon atoms or an alicyclic hydrocarbon group having 3-10 carbon atoms) is polymerized at a pH of 6 or more in the presence of water that serves as a polymerization solvent and an organic azo compound that serves as a radical polymerization initiator.

IPC Classes  ?

• C08F 16/16 - Monomers containing no hetero atoms other than the ether oxygen
• C08F 4/04 - Azo-compounds

Abstract

Provided is a draw solute that has low viscosity, can be circulated in forward-osmosis water treatments, and gives draw solutions which have a higher osmotic pressure than seawater and in which the draw solute sediments upon heating. The draw solute comprises at least one vinyl ether polymer having an oxyethylene chain as a side chain and having a number-average molecular weight (Mn) of 13,000 or lower.

IPC Classes  ?

• B01D 61/00 - Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltrationApparatus, accessories or auxiliary operations specially adapted therefor
• C02F 1/44 - Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
• C08F 16/18 - Acyclic compounds

Abstract

A method is provided by which a hydrogenated petroleum resin having satisfactory compatibility with base polymers and a good hue can be produced at a hydrogen pressure of 4 MPaG or less. The method for producing a hydrogenated petroleum resin comprises a hydrogenation step in which a product of the polymerization of dicyclopentadiene with a vinylaromatic compound is hydrogenated in the presence of a catalyst, the hydrogenation step being conducted under the conditions of (A) to (C). (A) The catalyst is used in an amount of 0.125-0.4 parts by mass per 100 parts by mass of the resin contained in the polymerization product. (B) A reaction pressure of 4 MPaG or lower. (C) A reaction temperature of 240°C or higher.

IPC Classes  ?

• C08F 8/04 - Reduction, e.g. hydrogenation
• C08F 240/00 - Copolymers of hydrocarbons and mineral oils, e.g. petroleum resins

Abstract

Provided is a new means with which it is possible to effectively reduce odor components coexistent in hydrogenated petroleum resin and to set the softening point within an appropriate range for manifesting adhesive performance. A method for deodorizing hydrogenated petroleum resin, the method being characterized by stripping the hydrogenated petroleum resin at a gas flow rate of 1-45 VVM.

IPC Classes  ?

• C08F 6/10 - Removal of volatile materials, e.g. monomers, solvents
• C08F 8/04 - Reduction, e.g. hydrogenation
• C08F 212/02 - Monomers containing only one unsaturated aliphatic radical
• C08F 232/04 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having no condensed rings having one carbon-to-carbon double bond
• C08F 232/08 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings
• C08F 240/00 - Copolymers of hydrocarbons and mineral oils, e.g. petroleum resins

Abstract

A method is provided by which a hydrogenated petroleum resin having satisfactory compatibility with base polymers and a good hue can be produced at a hydrogen pressure of 4 MPaG or less. The method for producing a hydrogenated petroleum resin comprises a hydrogenation step in which a product of the polymerization of dicyclopentadiene with a vinylaromatic compound is hydrogenated in the presence of a catalyst, the hydrogenation step being conducted under the conditions of (A) to (C). (A) The catalyst is used in an amount of 0.125-0.4 parts by mass per 100 parts by mass of the resin contained in the polymerization product. (B) A reaction pressure of 4 MPaG or lower. (C) A reaction temperature of 240°C or higher.

IPC Classes  ?

• C08F 8/04 - Reduction, e.g. hydrogenation
• C08F 240/00 - Copolymers of hydrocarbons and mineral oils, e.g. petroleum resins

Abstract

Provided is a new means with which it is possible to effectively reduce odor components coexistent in hydrogenated petroleum resin and to set the softening point within an appropriate range for manifesting adhesive performance. A method for deodorizing hydrogenated petroleum resin, the method being characterized by stripping the hydrogenated petroleum resin at a gas flow rate of 1-45 VVM.

IPC Classes  ?

• C08F 240/00 - Copolymers of hydrocarbons and mineral oils, e.g. petroleum resins
• C08F 6/10 - Removal of volatile materials, e.g. monomers, solvents
• C08F 8/04 - Reduction, e.g. hydrogenation
• C08F 212/02 - Monomers containing only one unsaturated aliphatic radical
• C08F 232/04 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having no condensed rings having one carbon-to-carbon double bond
• C08F 232/08 - Copolymers of cyclic compounds containing no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings

Abstract

Provided are core/shell type polymer microparticles each comprising a shell and a core, the microparticles being able to be produced by a method in which neither a surfactant nor a high-molecular-weight azo initiator is used, showing satisfactory dispersibility in aqueous media, and being useful as a dispersant, a metal-protecting stabilizer, a metal adsorbent, etc. The core/shell type polymer microparticles each comprise a shell comprising a hydrophilic vinyl ether polymer (a) and a core comprising a hydrophobic polymer (b).

IPC Classes  ?

• C08F 290/06 - Polymers provided for in subclass
• C08F 2/22 - Emulsion polymerisation

Abstract

122 represents an aliphatic hydrocarbon group comprising from 1 to 6 carbon atoms, inclusive, m represents an integer from 0 to 5, inclusive, and n represents an integer from 0 to 4, inclusive).

IPC Classes  ?

• C08F 20/40 - Esters of unsaturated alcohols
• C07C 69/54 - Acrylic acid estersMethacrylic acid esters
• G03F 7/004 - Photosensitive materials
• G03F 7/027 - Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds

Abstract

122 represents a C1-6 aliphatic hydrocarbon group, m represents an integer from 0 to 5, and n represents an integer from 0 to 4). The chemical compound can be used in a resin or the like for a resist having excellent etching resistance, resolution and sensitivity.

IPC Classes  ?

• C08F 20/18 - Esters of monohydric alcohols or phenols of phenols or of alcohols containing two or more carbon atoms with acrylic or methacrylic acids
• C07C 69/54 - Acrylic acid estersMethacrylic acid esters
• G03F 7/004 - Photosensitive materials
• G03F 7/027 - Non-macromolecular photopolymerisable compounds having carbon-to-carbon double bonds, e.g. ethylenic compounds

Abstract

Provided are surface-modified inorganic compound particles which have excellent dispersibility in a water-soluble organic solvent, and also have excellent chemical stability in water. These surface-modified particles are formed by modifying the surfaces of the inorganic compound particles with a compound represented by formula (1) or a salt thereof. [In formula (1), R1 represents an alkyl group having 1-4 carbon atoms or an alkenyl group having 2-4 carbon atoms.]

IPC Classes  ?

• C09C 3/08 - Treatment with low-molecular-weight organic compounds
• C01G 9/02 - OxidesHydroxides
• C01G 23/00 - Compounds of titanium
• C01G 23/04 - OxidesHydroxides
• C01G 25/02 - Oxides
• C01G 49/02 - OxidesHydroxides
• C09C 1/00 - Treatment of specific inorganic materials other than fibrous fillers Preparation of carbon black
• C09D 17/00 - Pigment pastes, e.g. for mixing in paints

Abstract

To provide a method capable of easily and efficiently removing a 2-alkoxyethanol from a mixture containing the 2-alkoxyethanol and a (2-alkoxyethyl) vinyl ether while suppressing a decrease in the yield of (2-alkoxyethyl) vinyl ether. and subjecting the resulting mixture to azeotropic distillation.

IPC Classes  ?

• C07C 41/38 - SeparationPurificationStabilisationUse of additives by liquid-liquid treatment
• C07C 41/42 - SeparationPurificationStabilisationUse of additives by change of physical state, e.g. by crystallisation by distillation
• C07C 41/08 - Preparation of ethers by addition of compounds to unsaturated compounds by addition of organic compounds only to carbon-to-carbon triple bonds
• C07C 43/13 - Saturated ethers containing hydroxy or O-metal groups
• C07C 43/16 - Vinyl ethers
• C07B 61/00 - Other general methods

Abstract

[Problem] To provide a stable and efficient method for producing an oxyethylene chain-containing vinyl ether polymer where decomposition of monomers and formation of polyacetal can be suppressed. [Solution] This method for producing an oxyethylene chain-containing vinyl ether polymer includes a step of polymerizing a vinyl ether represented by formula (1) (where R1 is an alkyl group having 1 to 3 carbon atoms and n is an integer of 1 to 10) at pH 5 or more, in the presence of water as a polymerization solvent, a basic compound as an additive, and an organic azo-based compound as a radical polymerization initiator.

IPC Classes  ?

• C08F 16/26 - Monomers containing oxygen atoms in addition to the ether oxygen
• C08F 2/04 - Polymerisation in solution
• C08F 2/10 - Aqueous solvent
• C08F 2/38 - Polymerisation using regulators, e.g. chain terminating agents
• C08F 4/04 - Azo-compounds

Abstract

The purpose of the present invention is to provide a protein adsorption preventing agent which has excellent film forming properties and water solubility, is capable of easily coating various substrates, and has an excellent protein adsorption preventing property. The purpose of the present invention is also to provide a protein adsorption preventing film using the protein adsorption preventing agent and a medical tool that includes the protein adsorption preventing film. Thus, provided are: a protein adsorption preventing agent comprising at least (A) a constituent unit represented by formula (1) (in the formula, R1 is a methyl group or an ethyl group and n is an integer of 1 to 10), and additionally including a polymer containing a hydrophobic group and an aqueous solvent; a protein adsorption preventing film using the protein adsorption preventing agent; and a medical tool that includes the protein adsorption preventing film.

IPC Classes  ?

• C09K 3/00 - Materials not provided for elsewhere
• C08F 16/16 - Monomers containing no hetero atoms other than the ether oxygen
• C09D 129/00 - Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radicalCoating compositions based on hydrolysed polymers of esters of unsaturated alcohols with saturated carboxylic acidsCoating compositions based on derivatives of such polymers
• C12M 3/00 - Tissue, human, animal or plant cell, or virus culture apparatus
• A61K 47/34 - Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyesters, polyamino acids, polysiloxanes, polyphosphazines, copolymers of polyalkylene glycol or poloxamers
• A61L 31/06 - Macromolecular materials obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
• C08F 297/00 - Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type without deactivating the intermediate polymer

Abstract

[Object] To provide a method for producing a vinyl ether polymer having a hydroxyl group on the side chain, wherein the vinyl ether polymer having a low viscosity and excellent workability and processability is produced in a simple and efficient method. [Means for solving problem] The present invention relates to a method for producing a vinyl ether polymer having a hydroxyl group on the side chain, characterized in that vinyl ether comprising a hydroxyl group is subjected to radical polymerization by using an oil-soluble azo polymerization initiator, in the presence of a mixed solvent comprising water and an organic solvent selected from alcohol or cyclic ether radical polymerization.

IPC Classes  ?

• C08F 216/12 - Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical by an ether radical
• C08F 16/12 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical by an ether radical
• C08F 116/12 - Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an alcohol, ether, aldehydo, ketonic, acetal, or ketal radical by an ether radical
• C08F 4/04 - Azo-compounds
• C08L 29/10 - Homopolymers or copolymers of unsaturated ethers
• C08F 16/26 - Monomers containing oxygen atoms in addition to the ether oxygen
• C08F 2/16 - Aqueous medium
• C08F 2/06 - Organic solvent

Abstract

Provided is a novel production method for hydrogenated petroleum resins, which is for producing a hydrogenated resin based on dicyclopentadiene and a vinylaromatic compound, the hydrogenated resin being for use as a tackifier. The production method is free from filter clogging and makes it possible to inhibit the catalytic activity from considerably decreasing during hydrogenation. The method for producing a hydrogenated petroleum resin based on dicyclopentadiene and a vinylaromatic compound comprises reacting a dicyclopentadiene compound with a vinylaromatic compound, thermally polymerizing the resultant reaction product to obtain a thermal polymerization product, and thereafter hydrogenating the thermal polymerization product, and is characterized in that a dicyclopentadiene oligomer is removed from the thermal polymerization product and the thermal polymerization product from which the oligomer has been removed is used as a feed material to be hydrogenated.

IPC Classes  ?

• C08F 8/04 - Reduction, e.g. hydrogenation
• C08F 12/00 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
• C08F 32/08 - Homopolymers or copolymers of cyclic compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings

Abstract

Provided is a novel production method for hydrogenated petroleum resins, which is for producing a hydrogenated resin based on dicyclopentadiene and a vinylaromatic compound, the hydrogenated resin being for use as a tackifier. The production method is free from filter clogging and makes it possible to inhibit the catalytic activity from considerably decreasing during hydrogenation. The method for producing a hydrogenated petroleum resin based on dicyclopentadiene and a vinylaromatic compound comprises reacting a dicyclopentadiene compound with a vinylaromatic compound, thermally polymerizing the resultant reaction product to obtain a thermal polymerization product, and thereafter hydrogenating the thermal polymerization product, and is characterized in that a dicyclopentadiene oligomer is removed from the thermal polymerization product and the thermal polymerization product from which the oligomer has been removed is used as a feed material to be hydrogenated.

IPC Classes  ?

• C08F 8/04 - Reduction, e.g. hydrogenation
• C08F 12/00 - Homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by an aromatic carbocyclic ring
• C08F 32/08 - Homopolymers or copolymers of cyclic compounds having no unsaturated aliphatic radicals in a side chain, and having one or more carbon-to-carbon double bonds in a carbocyclic ring system having condensed rings

Abstract

A method for producing a hydroxyl group-containing vinyl ether polymer according to the present invention includes: a step of radical polymerizing at least one vinyl ether selected from vinyl ether having a hydroxyl group represented by the following formula (2): 7 represents an alkylene group which is straight-chained, branched or comprises an alicyclic structure, and p is 1, 2, or 3, in the presence of water as a polymerization solvent and an azo compound represented by the following formula (1) as a polymerization initiator: 6 each independently represent an alkoxy group optionally having a substituent group or an alkyl amino group optionally having a substituent group.

IPC Classes  ?

• C08F 2/10 - Aqueous solvent
• C08F 4/04 - Azo-compounds
• C08F 16/04 - Acyclic compounds
• C08F 16/26 - Monomers containing oxygen atoms in addition to the ether oxygen
• C09D 11/00 - Inks
• C08K 3/18 - Oxygen-containing compounds, e.g. metal carbonyls
• C09D 129/10 - Homopolymers or copolymers of unsaturated ethers
• C09J 129/10 - Homopolymers or copolymers of unsaturated ethers
• C08F 116/14 - Monomers containing only one unsaturated aliphatic radical

Abstract

An alkenyl ether-vinyl ester copolymer contains a repeating unit derived from a hydroxyl group-containing alkenyl ether represented by the following formula (1), and a repeating unit derived from a vinyl ester represented by the following formula (2): 5 represents an acyl group having from 1 to 20 carbon atoms; and p represents an integer of from 1 to 3. The alkenyl ether-vinyl ester copolymer exhibits temperature responsiveness showing a change in hydrophilicity and hydrophobicity at a prescribed temperature as a critical point and has a lower critical solution temperature to water of from 1° C. to 99° C.

IPC Classes  ?

• C08F 218/08 - Vinyl acetate
• C08F 216/14 - Monomers containing only one unsaturated aliphatic radical

Abstract

Provided is a method for producing a polymer for an electronic material having a low content of metal ion impurities and a polymer for an electronic material obtained by such method. The method for producing a polymer for an electronic material according to the present invention comprises a polymerization step of obtaining a polymer by polymerizing a monomer(s) and a purification step of adding a strong acid having 0 or less pKa to the polymer solution and subsequently performing an ion exchange treatment to reduce the concentration of the metal ion impurities.

IPC Classes  ?

• C08F 6/06 - Treatment of polymer solutions
• C08G 8/04 - Condensation polymers of aldehydes or ketones with phenols only of aldehydes
• C08G 12/26 - Condensation polymers of aldehydes or ketones with only compounds containing hydrogen attached to nitrogen of aldehydes with heterocyclic compounds
• C08F 212/14 - Monomers containing only one unsaturated aliphatic radical containing one ring substituted by hetero atoms or groups containing hetero atoms
• C08F 12/24 - Phenols or alcohols
• C08F 6/02 - Neutralisation of the polymerisation mass, e.g. killing the catalyst

Abstract

To provide a method for producing a polymer that is capable of providing an alkenyl ether polymer having a molecular weight, a molecular weight distribution, and a composition that are controlled, with a vinyl ether having a hydroxyl group, and a block copolymer thereof. To provide a polymer obtained by the method as a macro chain transfer agent capable of performing reversible addition fragmentation chain transfer polymerization. Livingness can be imparted to radical polymerization of a hydroxyl group-containing vinyl ether by performing the radical polymerization in the presence of a particular RAFT agent and a radical polymerization initiator, and a block copolymer with another radically polymerizable vinyl monomer can be obtained by using the resulting living polymer as a macro chain transfer agent capable of performing reversible addition fragmentation chain transfer polymerization.

IPC Classes  ?

• C08F 16/26 - Monomers containing oxygen atoms in addition to the ether oxygen
• C08F 293/00 - Macromolecular compounds obtained by polymerisation on to a macromolecule having groups capable of inducing the formation of new polymer chains bound exclusively at one or both ends of the starting macromolecule
• C08F 18/08 - Vinyl acetate
• C08F 4/40 - Redox systems
• C08F 216/14 - Monomers containing only one unsaturated aliphatic radical
• C08F 218/08 - Vinyl acetate

Abstract

The purpose of the present invention is to provide a method for removing a 2-alkoxyethanol from a mixture containing the 2-alkoxyethanol and a (2-alkoxyethyl) vinyl ether easily and efficiently while preventing the decrease in yield of the (2-alkoxyethyl) vinyl ether. A method for removing a 2-alkoxyethanol represented by formula (1) [wherein R represents an alkyl group having 1 to 4 carbon atoms], said method being characterized by comprising the step of adding at least one azeotropic solvent selected from an alkane having 7 to 8 carbon atoms and a cycloalkane having 7 to 8 carbon atoms to a mixture containing the 2-alkoxyethanol and a (2-alkoxyethyl) vinyl ether represented by formula (2) [wherein R is as defined for R in formula (1)] and then azeotropically distilling the resultant mixture.

IPC Classes  ?

• C07C 41/42 - SeparationPurificationStabilisationUse of additives by change of physical state, e.g. by crystallisation by distillation
• C07C 41/08 - Preparation of ethers by addition of compounds to unsaturated compounds by addition of organic compounds only to carbon-to-carbon triple bonds
• C07C 41/38 - SeparationPurificationStabilisationUse of additives by liquid-liquid treatment
• C07C 43/13 - Saturated ethers containing hydroxy or O-metal groups
• C07C 43/16 - Vinyl ethers
• C07B 61/00 - Other general methods

Abstract

To provide a technique for producing a four-membered ring lactone more efficiently with higher yield by means of a carbonylation reaction of an epoxide using a heterogeneous catalyst that is able to be handled in air and is easily separated from the reaction product. A method for producing a four-membered ring lactone by means of a carbonylation reaction of an epoxide, which comprises a step wherein the epoxide and carbon monoxide are reacted with each other in the presence of (A) a heterogeneous catalyst in which an oxide of one or more metals selected from among group 5 to group 10 transition metals is used as a carrier, and the carrier is loaded with one or more substances selected from among group 10 transition metals, group 11 transition metals and oxides of these transition metals (provided that the metals in the loaded substances are different from the metals in the metal oxide used as the carrier), (B) a metal Lewis acid, and (C) a Lewis base that contains an atom selected from among an oxygen atom and a nitrogen atom in each molecule.

IPC Classes  ?

• C07D 305/12 - Beta-lactones
• B01J 23/89 - Catalysts comprising metals or metal oxides or hydroxides, not provided for in group of the iron group metals or copper combined with noble metals
• B01J 27/128 - HalogensCompounds thereof with iron group metals or platinum group metals
• B01J 27/13 - Platinum group metals
• B01J 27/135 - HalogensCompounds thereof with titanium, zirconium, hafnium, germanium, tin or lead
• B01J 31/28 - Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups of the platinum group metals, iron group metals or copper
• C07B 61/00 - Other general methods

Abstract

The objectives of the present invention are: to find a biocompatible material which has excellent film formation properties and resistance to water dissolution and is able to be easily coated to various bases, while having excellent antithrombotic properties; and to provide an antithrombotic coating agent and an antithrombotic coating film, each of which uses this biocompatible material, and a medical device which is provided with this antithrombotic coating film. Means that have enabled the achievement of these objectives are: a copolymer which contains at least one repeating unit (A) represented by formula (1) and at least one repeating unit (B) represented by formula (2); an antithrombotic coating agent which contains this copolymer and an organic solvent; an antithrombotic coating film which is formed of this copolymer; and a medical device which is provided with this coating film. (In formula (1), n represents an integer of 2-10; and R1 represents a methyl group or an ethyl group.) (In formula (2), R2 represents an aliphatic hydrocarbon group.)

IPC Classes  ?

• C08F 216/18 - Acyclic compounds
• A61L 33/06 - Use of macromolecular materials

Abstract

A method for producing poly(dimethyl vinylphosphonate) from a monomer component mainly containing dimethyl vinylphosphonate by anionic polymerization in the presence of an anionic polymerization initiator, the method being characterized in that an aliphatic ether is used as a polymerization solvent, and a method for producing poly(vinylphosphonic acid) characterized in that the poly(dimethyl vinylphosphonate) obtained by the former method is hydrolyzed in the presence of an acid are provided. The methods make it possible to easily produce a poly(dimethyl vinylphosphonate) which has a high molecular weight and in which the molecular weight is controlled, and make it possible to produce a poly(vinylphosphonic acid) which has a high molecular weight and in which the molecular weight is controlled corresponding to the poly(dimethyl vinylphosphonate).

IPC Classes  ?

• C08F 8/12 - Hydrolysis
• C08F 130/02 - Homopolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and containing phosphorus, selenium, tellurium or a metal containing phosphorus