The invention relates to a method for preparing keto-functionalized aromatic (meth)acrylates by reacting keto-functionalized aromatic alcohols or keto-functionalized aromatic amines with (meth)acrylic anhydride having a content of (meth)acrylic acetic anhydride of less than 4.5%.
C07C 67/08 - Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
C07C 231/02 - Preparation of carboxylic acid amides from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
C07C 233/33 - Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having the nitrogen atom of at least one of the carboxamide groups bound to a carbon atom of a hydrocarbon radical substituted by doubly-bound oxygen atoms with the substituted hydrocarbon radical bound to the nitrogen atom of the carboxamide group by a carbon atom of a six-membered aromatic ring
3.
NANOPARTICLE COMPRISING A BIO-RESORBABLE POLYESTER, A HYDROPHILIC POLYMER AND AN ACYLATED HUMAN LACTOFERRIN-DERIVED PEPTIDE
11228112266 hydroxy-alkylester of acrylic acid or methacrylic acid, wherein in polymer 1 the monomers (a1) and (b1) add up from 98 to 100 % by weight, and most preferred to 100 %, and wherein in polymer 2, independent from polymer 1, the monomers (a2) and (c2) add up from 98 to 100 % by weight, most preferred to 100 %.
C09D 4/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond
C09D 133/04 - Homopolymers or copolymers of esters
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
5.
LIGHT SCATTERING POLYMERIC COMPOSITION WITH IMPROVED SCATTERING EFFICIENCY AND IMPROVED MECHANICAL PROPERTIES
The present invention relates to light scattering polymeric compositions with improved scattering efficiency and improved mechanical properties. The compositions comprise a polymeric matrix material and at least two different kinds of scattering particles uniformly dispersed therein.
The present invention is related to a light emitting element comprising edge-lit luminaires of transparent light guiding material having an increased resistance against UV-light and high temperatures.The light emitting element can be advantageously employed as a light source in outdoor applications such as traffic signs, street lights, advertising panels, outdoor illumination means or in exterior vehicle lighting.
The invention relates to a body comprising a plurality of phases that have different electron spin resonance spectra not resulting simply from combining the ESR spectra of each phase individually.
G01N 24/10 - Investigating or analysing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using electron paramagnetic resonance
8.
PESU PARTICLE FOAMS FOR APPLICATIONS IN AVIATION INTERIORS
Polyethersulfone (PESU) based polymer foams comply with the statutory requirements on interiors in aviation demanded by the aviation industry. The requirements concerning fire behaviour, resistance to media and mechanical strength in particular represent significant challenges. Suitable polymer foams are produced as semi-finished products in the prior art. Post-processing into shaped parts is uneconomic in terms of time and the use of material, because of the large volumes of cutting waste, for instance. The invention solves this problem in that the material that is, in principle, suitable can be processed into particle-foam shaped parts. Said shaped parts can be produced without post-processing in short cycle times and hence economically. Furthermore, new options arise for function integration, such as the direct foam moulding of inserts, etc., and in respect of design freedom.
The present invention relates to the field of producing high- temperature foams, such as are used in the construction of aircraft, ships and rail and other vehicles, in particular further processed into sandwich materials by joining together with two outer layers. Provided for this is a novel process for producing high-temperature foams (HT foams) that are particularly suitable for producing such sandwich components for lightweight construction. This process achieves an improvement in the processability of the HT foams produced according to the invention and a weight reduction of the sandwich materials. The HT foams are furthermore rigid particle foams which, can be produced much more economically than rigid block foams. The present invention brings about in particular a reduction in the resin absorption in fibre composite processes by a process-related optimization of the surface finish.
B29C 67/20 - Shaping techniques not covered by groups , or for porous or cellular articles, e.g. of foam plastics, coarse-pored
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
B29C 44/56 - After-treatment of articles, e.g. for altering the shape
B29C 44/44 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in the form of expandable particles or beads
The present invention relates to a composition for producing novel foams which combine especially good flame-retardant properties with good elongation at break. These novel foams are produced from a polyethersulfone (PES) and polyphenylene sulfone (PPSU) blend.
The invention discloses a process for preparing a polymer-coated hard shell capsule, suitable as container for pharmaceutical or nutraceutical biologically active ingredients, wherein the hard shell capsule is comprising a body and a cap, wherein in the closed state the cap overlaps the body either in a pre-locked state or in a final-locked state, wherein the hard shell capsule is provided in the pre-locked state and spray-coated with a coating solution, suspension or dispersion comprising a polymer or a mixture of polymers to create a coating layer which covers the outer surface of the hard shell capsule in the pre-locked state.
A61K 9/48 - Preparations in capsules, e.g. of gelatin, of chocolate
A61J 3/07 - Devices or methods specially adapted for bringing pharmaceutical products into particular physical or administering forms into the form of capsules or similar small containers for oral use
12.
PROCESS FOR PREPARING DIMETHYLAMINOALKYL (METH)ACRYLATES
The present invention relates to a process for preparing dimethylaminoalkyi (meth)acrylates from alkyl (meth)acrylate and dimethylaminoalkanol. It likewise relates to the use of a catalyst system comprising a solution of a lithium alkoxide in alcohol in the preparation of a dimethylaminoalkyi (meth)acrylate.
C07C 213/06 - Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton from hydroxy amines by reactions involving the etherification or esterification of hydroxy groups
13.
CATALYST FOR THE OXIDATIVE ESTERIFICATION OF ALDEHYDES TO CARBOXYLIC ACID ESTERS
The present invention relates to a novel method for the oxidative esterification, in general for the conversion of aldehydes with alcohols in the presence of oxygen-containing gases directly to the corresponding ester in the presence of a heterogeneous contact, by which, for example, (meth)acrolein can be converted to methyl(meth)acrylate. The catalysts used according to the invention are characterized in particular by a high mechanical and chemical stability as well as by a good catalytic performance even over very long periods of time. This relates in particular to an improvement in the service life, the activity and selectivity of the catalysts compared with catalysts of the prior art, which lose relatively quickly activity and/or selectivity in continuous operation in media even with low water content. The special feature of this new catalyst according to the invention is that said catalyst comprises titanium dioxide as the main component of the carrier material.
26288 alkyl esters of acrylic acid or of methacrylic acid with a quaternary cationic group in the alkyl group. Disclosed is also the use of a polymer for preparing a dosage form with a sustained release profile and resistance against the influence of ethanol and the dosage form itself.
C09D 133/06 - Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
The present invention relates to a process for producing optical molding materials on the basis of methyl methacrylate, wherein said MMA is produced by means of an optimized method and the molding materials exhibit in particular a very low yellowness index. The MMA used according to the invention was produced by direct oxidative esterification of methacrolein. In particular, the present invention relates to an optimized workup of the reactor discharge of the oxidative esterification of methacrolein, by means of which in particular coloring secondary products are removed. Furthermore, this process has the advantage that fewer demands than described in the prior art are placed on plant apparatus configuration.
The present invention relates to brittle acrylic films made from impact-modified polyalkyl (meth)acrylate and forgery prevention labels comprising the same. The films can be advantageously prepared by extrusion and, depending on the desired purpose, can be designed to be translucent or entirely non-transparent e.g. white. Ideally, the brittle acrylic films and the forgery prevention labels comprising the same have no intended break points such as slits, perforation etc.
The present invention is directed to biocompatible polymeric powders to be used for 3D printing applications. More specifically, the 3D printing process will allow a tool less manufacturing of medical devices in particular in the implantables or regenerative space. Its flow and other processing characteristics qualifies them for the use in selective laser sintering, but also could be suitable for other powder based 3D printing technologies.
B29C 64/153 - Processes of additive manufacturing using only solid materials using layers of powder being selectively joined, e.g. by selective laser sintering or melting
C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
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
18.
PEI PARTICLE FOAMS FOR APPLICATIONS IN AVIATION INTERIORS
Polyetherimide (PEI)-based polymer foams comply with the statutory requirements on interiors in aviation demanded by the aviation industry. The requirements concerning fire behaviour, resistance to media and mechanical strength in particular represent significant challenges. Suitable polymer foams are produced as semi-finished products in the prior art. Post-processing into shaped parts is uneconomic in terms of time and the use of material, because of the large volumes of cutting waste, for instance. The invention solves this problem in that the material that is, in principle, suitable can be processed into particle-foam shaped parts. Said shaped parts can be produced without post-processing in short cycle times and hence economically. Furthermore, new options arise for function integration, such as the direct foam moulding of inserts, etc., and in respect of design freedom.
C08J 9/18 - Making expandable particles by impregnating polymer particles with the blowing agent
C08J 9/232 - Forming foamed products by sintering expandable particles
C08J 9/04 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent
The present invention relates to a process for preparing a poly(meth)acrylic acid, characterized in that a (meth)acrylic acid-containing process stream from (meth)acrolein synthesis is subjected to free-radical polymerization. The invention also relates to the esterification of the polymer obtained to give a homopolymer or copolymer ester, and to the use thereof as additive, flow improver and water reducer.
Process for continuous dissolution of a solid in a reaction medium comprising the steps of: (a) providing a liquid by withdrawal of a portion of the reaction medium from a first reaction vessel; (b) contacting the liquid provided in step a) with the solid in a second reaction vessel to form a solution of the solid, wherein the solid in the second reaction vessel is present in the form of a fixed bed which is traversed by the liquid; and (c) recycling the solution formed in step b) into the first reaction vessel.
The invention relates to a method for producing a carboxylic acid ester by reacting an aldehyde in the presence of an aluminum alcoholate, wherein the aluminum alcoholate is obtained either by reacting an aluminum hydride with an aldehyde or by reacting another aluminum alcoholate with a carboxylic acid ester.
B01J 31/14 - Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing organo-metallic compounds or metal hydrides of aluminium or boron
C07C 67/44 - Preparation of carboxylic acid esters by oxidation-reduction of aldehydes, e.g. Tishchenko reaction
22.
PROCESS FOR OXIDATIVE ESTERIFICATION OF ALDEHYDES TO CARBOXYLIC ACID ESTERS
The present invention relates to a novel process for carrying out a heterogeneously catalyzed reaction for the oxidative esterification of aldehydes to carboxylic acid esters. In this context, the process according to the invention allows the reliable operation of processes of this type for longer and with constant or even increased activities and selectivities. As a result, it is possible to carry out processes of this type in as simple, economical and environmentally friendly a manner as possible.
The present invention is directed to bioresorbable polymers to be used as bone and tissue adhesives. The present invention is also directed to the synthesis of bioresorbable polymeric molecules bearing adhesive moieties and the use of such compounds in methods to glue and stabilize fractured bones and damaged tissues. The present invention is also directed to the use of such compounds as adhesive sealants for applications in wound care. The present invention is also directed to the use of such compounds as biodegradable ink for applications in tissue engineering and 3D printing. The present invention also relates to the use of such compounds as drug delivery platforms.
C08G 63/664 - Polyesters containing oxygen in the form of ether groups derived from hydroxycarboxylic acids
A61L 24/04 - Surgical adhesives or cementsAdhesives for colostomy devices containing macromolecular materials
C08G 81/02 - Macromolecular compounds obtained by interreacting polymers in the absence of monomers, e.g. block polymers at least one of the polymers being obtained by reactions involving only carbon-to-carbon unsaturated bonds
24.
CURABLE THERMOSETTING RESIN COMPOSITIONS WITH IMPROVED MECHANICAL PROPERTIES
The present invention relates to a polymeric particle having an average diameter from 300 nm to 1000 nm and comprising: an outer layer comprising a cross-linked polymer A and a first inner layer comprising a cross-linked polymer B distinct from the cross-linked polymer A, wherein the cross-linked polymer A is obtainable by emulsion polymerisation of a reaction mixture comprising at least one (meth)acrylic monomer, a cross-linking monomer A, a polymerisation initiator and a chain transfer agent.
C08F 265/06 - Polymerisation of acrylate or methacrylate esters on to polymers thereof
C09D 151/00 - Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCoating compositions based on derivatives of such polymers
C09J 151/00 - Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsAdhesives based on derivatives of such polymers
25.
CURABLE (METH)ACRYLIC RESIN COMPOSITIONS HAVING ENHANCED VISCOSITY
The present invention relates to polymeric particles for use as impact modifiers in curable (meth)acrylic resin compositions and a process for the preparation thereof.
C08F 265/06 - Polymerisation of acrylate or methacrylate esters on to polymers thereof
C09D 151/00 - Coating compositions based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsCoating compositions based on derivatives of such polymers
C09J 151/00 - Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bondsAdhesives based on derivatives of such polymers
26.
GLYCEROL (METH)ACRYLATE CARBOXYLIC ESTER HAVING A LONG SHELF LIFE
C07C 67/08 - Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
C07C 69/73 - Esters of carboxylic acids having esterified carboxyl groups bound to acyclic carbon atoms and having any of the groups OH, O-metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of unsaturated acids
27.
EXTRUDED MATT FOIL WITH IMPROVED MECHANICAL PROPERTIES AND A HIGH WEATHERING RESISTANCE
The present invention relates to an extruded matt foil comprising at least one layer in which glass beads are uniformly distributed in a polymer matrix comprising at least one fluoropolymer and at least one further layer. The matt foil has a particularly high UV-resistance, a high weathering resistance and excellent mechanical properties. Therefore, the foil of the present invention is highly suitable for surface-protection of materials such as polyvinyl chloride (PVC) and for use in high- pressure laminates(HPLs).
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B32B 27/18 - Layered products essentially comprising synthetic resin characterised by the use of special additives
The present invention relates to the technical field of 3D printing, in particular in the form of the binder jetting method in which particles in a powder bed are bonded by means of a printed adhesive to form a three-dimensional object. These particles can be inorganic materials, e.g. sand or a metal powder, or polymeric particles, such as polymethacrylates or polyamides. To this end, polymethacrylates can be provided, for example, in the form of suspension polymers, known as bead polymers. The invention also relates to the use of porous particles in the binder jetting method, in particular porous suspension polymers These powders for 3D printing differ from the prior art in that, due to the porosity, the powder particles ensure quicker and improved absorption of the printed binder. In addition, a great advantage of this process is that a product with less warpage is produced and the end product has an improved surface appearance.
A61K 8/49 - Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing heterocyclic compounds
A61Q 11/00 - Preparations for care of the teeth, of the oral cavity or of dentures, e.g. dentifrices or toothpastesMouth rinses
C09D 4/00 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond
C09D 5/00 - Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects producedFilling pastes
The present invention relates to novel PMMA foams and to their production. Here, polymers, obtained by copolymerizing methacrylic amides, such as for example N-isopropyl methacrylamide, and without styrol, are foamed. It has been surprisingly found that, according to the invention a stable, simple to produce PMMA foam with very good properties, such as very high compressive strength can be obtained, which in particular, can be bound much easier to cover layers compared to known PMMA foams.
C08J 9/02 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by the reacting monomers or modifying agents during the preparation or modification of macromolecules
C08J 9/04 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent
31.
ACRYLIC MATERIALS FOR USE IN AN ULTRAVIOLET LIGHT ENGINE
The present invention is in the field of ultraviolet (UV) light source applications and provides transparent acrylic materials for use as optics and covers for such applications. In particular, the present invention provides a UV light engine comprising at least one optical element made of a polymeric material selected from polyalkyl(meth)acrylate and poly(meth)acrylalkylimide. The optical element of the ultraviolet light engine may be primary optics, secondary optics, tertiary optics or a combination thereof.
G02B 1/04 - Optical elements characterised by the material of which they are madeOptical coatings for optical elements made of organic materials, e.g. plastics
32.
PREPARATION OF N,N-(DI)ALKYLAMINOALKYL(METH)ACRYLAMIDE OR N,N-(DI)ALKYLAMINOALKYL(METH)ACRYLATE AND THE QUATERNARY AMMONIUM SALTS THEREOF AS FLOCCULATING AIDS AND GELLING AGENTS
The present invention describes a process for preparing N,N-(di)alkylaminoalkyl(meth)acrylamide or N,N-(di)alkylaminoalkyl (meth)acrylate and the quaternary ammonium salts thereof with a low content of the compounds corresponding to the formula (IV).
C07C 231/02 - Preparation of carboxylic acid amides from carboxylic acids or from esters, anhydrides, or halides thereof by reaction with ammonia or amines
The present invention relates to the technical field of 3D printing, in particular in the form of the binder jetting process in which particles in a powder bed are adhesive-bonded by means of a printed adhesive to give a three-dimensional object. The particles here can be inorganic materials, e.g. sand or a metal powder, or polymeric particles, such as polymethacrylates or polyamides. To this end, polymethacrylates can by way of example take the form of suspension polymers known as bead polymers. In this context the present invention in particular relates to, as powders for 3D printing, suspension polymers which differ from the prior art in that they comprise a hard phase and an uncrosslinked soft phase.
The invention relates to a novel method for carrying out a heterogeneously catalysed reaction, in particular in a liquid phase. Heterogeneously catalysed reactions in a liquid phase are extensively described in the technical literature. These include, for example, cobalt-catalysed Fischer-Tropsch synthesis, palladium- and nickel-catalysed direct hydrogenations with hydrogen, and numerous oxidation reactions. In this context, with the method according to the invention, methods of this type can be operated undisturbed for longer with constant or even increased activities and selectivities. As a result, it is possible to carry out methods of this type in a manner that is as simple, economical and environmentally friendly as possible.
B01J 8/22 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes with fluidised particles with liquid as a fluidising medium gas being introduced into the liquid
B01J 8/00 - Chemical or physical processes in general, conducted in the presence of fluids and solid particlesApparatus for such processes
The invention relates to the technical field of 3D printing, in particular in the form of the binder jetting method, in which particles are adhered in a powder bed using a compressed adhesive in order to form a three-dimensional object. The particles can be inorganic materials, such as sand or a metal powder for example or polymer particles, such as polymethacrylates or polyamides for example. The polymethacrylates can be provided in the form of suspension polymers for example, i.e. bead polymers.
The invention relates to a method for foaming polymer particles, in particular poly(meth)acrylimide (PMI) particles, which can be further processed to produce foam moulded parts or composites. The method is characterised in that a polymer granulate containing fillers that improve thermal conductivity is foamed. Said granulate can be formed, e.g. in a compression mould, during foaming to produce a moulded part or a composite workpiece with a foam core.
The present invention is in the field of medical diagnostics and microfluidics and primarily relates to a microfluidic device for the analysis of biological samples. The microfluidic device of the present invention comprises at least one microchannel, the inner surface of which is at least partially coated with a hydrophilic coating. This hydrophilic coating is located on top of the intermediate layer which, in turn, is located between the material of the inner surface of the microchannel and the hydrophilic coating.
The invention relates to a method for producing (meth) acrylic acid esters with isomeric alcohols obtained by reacting glycerine with formaldehyde (hydroxy substituted dioxanes and dioxolanes) in high yield using catalysts based on titanium, zirconium or tin, or is base-catalyzed.
The invention relates to novel catalysts for oxidative esterification, by means of which, for example, (meth)acrolein can be converted to methyl (meth)acrylate. The catalysts according to the invention are characterised in particular by a high mechanical and chemical stability, even over very long periods of time. This relates in particular to an improvement in the service life, activity and selectivity of the catalyst compared with catalysts from the prior art, which relatively quickly lose activity and/or selectivity in continuous operation, even in media with low water content.
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 35/00 - Catalysts, in general, characterised by their form or physical properties
The invention is concerned with an injection solution, comprising an organic solvent, a copolymer, which is a poly(lactide-co-glycolide) dissolved in the organic solvent and a pharmaceutical active ingredient which is non-nucleoside inhibitor of the HIV reverse transcriptase or of the HIV integrase, which contains aromatic and heterocyclic aromatic or aromatic and heterocyclic aromatic and aliphatic heterocyclic groups, wherein the content of the pharmaceutical active ingredient is from about 8 to about 25% by weight of the copolymer solution.
A61K 9/00 - Medicinal preparations characterised by special physical form
A61K 47/22 - Heterocyclic compounds, e.g. ascorbic acid, tocopherol or pyrrolidones
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
A61K 31/505 - PyrimidinesHydrogenated pyrimidines, e.g. trimethoprim
41.
PRODUCTION OF COMPLEX HOLLOW FOAM OR SANDWICH STRUCTURES BY MEANS OF A MOLD CORE
The invention relates to a method for producing complex foam-molded rigid foam materials, in particular poly(meth)acrylimide (P(M)I) cores, preferably polymethacrylimide (PMI) cores, which can be used in automotive or aircraft construction, for example. The method is characterized in that the use of a particulate core during the foaming process allows for an additional weight reduction in comparison with prior art foam materials or sandwich materials.
B29C 33/38 - Moulds or coresDetails thereof or accessories therefor characterised by the material or the manufacturing process
B29C 44/12 - Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
B29C 44/14 - Incorporating or moulding on preformed parts, e.g. inserts or reinforcements the preformed part being a lining
B29C 44/44 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in the form of expandable particles or beads
42.
POLYFUNCTIONAL ALCOHOLS AS CROSS-LINKERS IN PMI FOAMS
The invention relates to the manufacture of PMI foams, in particular to the constituents of the formulation thereof, which lead to a particularly good adjustability of the density at a given foaming temperature.
C08J 9/00 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof
C08J 9/04 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent
C08L 33/24 - Homopolymers or copolymers of amides or imides
C08F 220/46 - Acrylonitrile with carboxylic acids, sulfonic acids or salts thereof
The present invention relates to a process for preparing alkyl methacrylates, especially MMA, and methacrylic acid, based on methacrolein, which has been oxidatively esterified in a second process stage. Methacrolein is obtainable in principle from C2 and C4 units. The present process has the advantage that the alkyl methacrylate and methacrylic acid can be obtained in a simple manner, in high yields and high purities, either as a mixture or as isolated product streams. In particular, the process of the invention has the great advantage that especially the ratio of the desired methacrylic acid and alkyl methacrylate, especially MMA, products can be adjusted freely within a wide range and varied by chemical engineering measures and operating parameters.
The present invention relates to a process for preparing methyl methacrylate by direct oxidative esterification of methacrolein. Methyl methacrylate is used in large amounts for preparing polymers and copolymers with other polymerizable compounds. In addition, methyl methacrylate is an important constituent for a variety of specialty esters based on methacrylic acid (MAA) which can be prepared by transesterification with the appropriate alcohol. There is consequently a great interest in very simple, economic and environmentally friendly processes for preparing this starting material. In particular the present invention relates to an optimized workup of the reactor discharge of the oxidative esterification of methacrolein by means of which process waste streams can be minimized and process water can be recycled in optimal fashion. The methacrylic acid generated in the process is also optimally recovered and isolated or converted into the commodity alkyl methacrylate. This process moreover has the advantage that fewer demands than described in the prior art are placed on plant apparatus configuration.
The invention refers to a process for preparing poly(lactide-co-glycolide) copolymer particles with an average particle size in the range of 50 - 800 nm comprising the steps: a) transfer of ethanol and a poly(lactide-co-glycolide) copolymer with a content of polymerized monomer units of 55 - 80 mol% lactide and 20 to 45 mol% of glycolide and a molecular weight Mw of 1.000 - 25.000 into a first reactor with a stirring equipment, b) feeding carbon dioxide into the first reactor so that carbon dioxide is from 65 to 85 % by weight and the ethanol is 15 to 35 % by weight wherein carbon dioxide and ethanol add up to 100%, c) mixing the poly(lactide-co-glycolide) copolymer, the ethanol and the carbon dioxide by stirring and adjusting or maintaining the mixture in the first reactor to a temperature of at least 31 and up to 70 °C and a pressure of at least 7.38 and up to 50 MPa, d) stirring the mixture from step c) for 1 to 5 hours, whereby at least a part of the poly(lactide-co-glycolide) copolymer becomes dissolved in the mixture of carbon dioxide and ethanol, e) transfer of the mixture from step d) into a second reactor under rapid reduction of the pressure and expansion with phase separation into a gas phase, an aerosol and an ethanolic suspension containing poly(lactide-co-glycolide) copolymer particles, f) removing the carbondoxide gas and the ethanol aerosol from the reactor g) obtaining the poly(glycolide-co-lactide) copolymer particles with an average particle size in the range of 50 - 800 nm in the form of an ethanolic suspension or in dry form from the second reactor.
C08J 9/14 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
C08J 9/20 - Making expandable particles by suspension polymerisation in the presence of the blowing agent
46.
PROCESS FOR PREPARING A POWDER COMPRISING A HUMAN COAGULATION FACTOR PROTEIN AND A LACTIC ACID POLYMER
The invention refers to a process for preparing a powder comprising one or more human coagulation factor proteins and a lactic acid polymer, comprising the steps of a) mixing and dispersing a lactic acid polymer with a particle size d50 in the range 0.1 –2 µm and the one or more human coagulation factor proteins in water, b) drying the dispersion, c) compressing the dried mass from the dispersion, d) comminuting the compressed dried mass from the dispersion to a powder with a particle size d50 in the range of more than 0.5and up to 5 µm.
The invention refers to a pharmaceutical or nutraceutical composition comprising a core a) comprising an active ingredient and a water-insoluble polymer, a coating layer b) above the core a) comprising a salt of an alginic acid, and a coating layer c) above the coating layer b) comprising an anionic (meth)acrylate copolymer polymerized from a (meth)acrylate monomer mixture comprising 5 –75 % by weight in relation to the total weight of the (meth)acrylate monomer mixture of (meth)acrylate monomers with an anionic group, wherein the amount of the water-insoluble polymer in the core a) is 2 to 20 % by weight in relation to the weight of the core a) and the amount of the salt of an alginic acid in the coating layer b) is 5 to 85 % by weight in relation to the weight of the core a) and the amount of the anionic (meth)acrylate copolymer in the coating layer c) is 10 to 75 % by weight in relation to the weight of the core a) and to the coating layer b).
The present invention relates to novel PMMA foams and to their production. In this case, formulations are used in the production, which comprise in addition to suitable blowing agents in particular and mostly in low concentrations cross-linking agents and regulators as constituents of the formulation. It has surprisingly been found that, according to the invention, a stable, simple-to-produce PMMA foam having very good properties can be obtained.
The invention relates to novel, fine-pored PMMA foams and to the production of same. Formulations are used in production which comprise nucleating agents alongside suitable blowing agents. Unexpectedly, a stable, simple-to-produce PMMA foam with very fine pores and very good properties may be obtained according to the invention.
The invention relates to permanent security films made from poly(meth)acrylate, in particular from a polymethylmethacrylate, which contains a maximum 10 wt.% or no impact-resistant modifiers. Said films have a high transparency, can be easily printed and are can be applied without predetermined breaking points. The permanent security films can be used, in particular, in documents, such as passports, in security labels, such as car-related stickers or for securing products from theft, or as a price label. Said security labels are characterized by having a good resistance to weather and in particular, a particularly good UV stability. The invention relates to, in particular, the use of said security labels which have a thickness of a maximum 2 mm, contain at least 80 wt.% polymethylmethacrylate and do not contain any impact-resistant modifying particles.
The invention relates to new catalysts for oxidative esterification that allows (meth)acrolein, for example, to be converted to methyl(meth)acrylate. The catalysts of the invention are characterized in particular by great mechanical and chemical stability even over very long periods of time. There is an improvement especially over prior art catalysts that lose activity and/or selectivity relatively quickly during continuous operation in media having even a low water content.
The invention relates to a pharmaceutical or nutraceutical composition, comprising a) a core a), comprising a pharmaceutical or a nutraceutical active ingredient and b) a coating layer b), comprising a mixture of 80 to 96 % by weight of a water-insoluble (meth)acrylate polymer and 4 to 20 % by weight of guar gum, wherein the water-insoluble (meth)acrylate polymer is composed of polymerized units of more than 95 and up to 100 % by weight C1- to C4-alkyl esters of acrylic acid or of methacrylic acid and less than 5% by weight of acrylic acid or methacrylic acid.
The invention relates to a method for producing alpha- or beta-substituted carboxylic acid esters by the alcoholysis of alpha-or beta-substituted carboxylic acid amides using heterogeneous catalysis, wherein the catalyst is regenerated by a medium at 250 - 600°C.
C07C 67/20 - Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group from amides or lactams
C07C 69/675 - Esters of carboxylic acids having esterified carboxyl groups bound to acyclic carbon atoms and having any of the groups OH, O-metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of saturated acids of saturated hydroxy-carboxylic acids
B01J 38/04 - Gas or vapour treatingTreating by using liquids vaporisable upon contacting spent catalyst
B01J 38/06 - Gas or vapour treatingTreating by using liquids vaporisable upon contacting spent catalyst using steam
B01J 38/12 - Treating with free oxygen-containing gas
B01J 38/16 - Oxidation gas comprising essentially steam and oxygen
The present invention relates to a method for cutting hard foams, in particular P(M)I foam blocks. A method is provided which allows cutting these hard foams without any loss of material, produced for example in the form of relevant amounts of sawdust during sawing, even when cutting into layers of greater thickness, for example of more than 3 mm.
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
B29C 44/56 - After-treatment of articles, e.g. for altering the shape
B26D 1/46 - Cutting through work characterised by the nature or movement of the cutting memberApparatus or machines thereforCutting members therefor involving a cutting member which does not travel with the work having an endless band-knife or the like
The present invention relates to an optimized process for preparing methacrylic acid, wherein methacrolein is prepared in a first stage from propionaldehyde and formaldehyde by means of a Mannich reaction and oxidized in a second stage to methacrylic acid. More particularly, the present invention relates to the reduction in the amounts of catalyst to be used in the first stage, especially to the reduction in the amounts of acid to be used here, by virtue of the additional installation of recycling streams suitable for the purpose.
C07C 51/25 - Preparation of carboxylic acids or their salts, halides, or anhydrides by oxidation with molecular oxygen of unsaturated compounds containing no six-membered aromatic ring
C07C 51/48 - SeparationPurificationStabilisationUse of additives by liquid-liquid treatment
56.
PROCESS FOR PREPARING A BIO-RESORBABLE POLYESTER IN PARTICULATE FORM
The invention refers to process for preparing a bio-resorbable polyester in particulate form, comprising the steps: a) providing a bio-resorbable polyester with in the form of a dry polymer mass or in the form of a wet polymer mass; b) feeding the polymer mass from step a) into an extruder extruder with at least one degassing zone where the polymer mass is molten, extruded and degassed; c) discharging the degassed polymer mass out of the extruder; d) comminuting the discharged polymer mass to particles with - a bulk density of 0.3 g/ml or more, - a tapped density of 0.4 g/ml or more and - a specific surface area of 2.0 m2/g or less.
The invention relates to a method of a new type for producing new fiber-reinforced profile materials, which are filled with a rigid foam core, in particular a PMI foam core. The invention relates in particular to a method of a new type that can be performed in different variants with an especially high throughput and high variability in respect of the shaping. In one step, a complex fiber-reinforced profile material is continuously produced and simultaneously filled with the rigid-foam core. Furthermore, very good bonding of the rigid foam core to the fiber-reinforced profile material is ensured in the same step. Furthermore, the shaping occurs in at least two tools simultaneously such that an especially high throughput can be achieved and profile materials of different shapes can be produced simultaneously.
B29C 70/52 - Pultrusion, i.e. forming and compressing by continuously pulling through a die
B29C 70/46 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
B29C 70/86 - Incorporating in coherent impregnated reinforcing layers
B29D 99/00 - Subject matter not provided for in other groups of this subclass
58.
PRODUCTION OF LOCALLY REINFORCED FIBRE COMPOSITE COMPONENTS FOR HIGH-VOLUME SERIES IN A CONTINUOUS PROCESS
The present invention relates to a novel method for producing novel fibre-reinforced profiled materials, which are filled with a rigid foam core, in particular a PMI foam core. With the method according to the invention, in one method step a complex fibre-reinforced profiled material is continuously produced and at the same time filled with the rigid foam core. Furthermore, very good bonding of the rigid foam core to the fibre-reinforced profiled material is ensured in the same method step. The present invention relates in particular to a novel embodiment of the method with which it is possible to realize local reinforcements in the outer material of the profiled material with at the same time a high degree of variability with respect to the shaping. The reinforcements mentioned are realized by the placement of fibrous pieces of a restricted length by means of a device especially designed for the purpose.
B29C 70/52 - Pultrusion, i.e. forming and compressing by continuously pulling through a die
F16S 3/00 - Elongated members, e.g. profiled membersAssemblies thereofGratings or grilles
B29C 70/46 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
B29C 70/86 - Incorporating in coherent impregnated reinforcing layers
B29D 99/00 - Subject matter not provided for in other groups of this subclass
59.
COMPOSITE LIGHT SYSTEM FOR USE IN ULTRATHIN LIGHTING DEVICES AND BACK LIGHT UNITS
The invention relates to an improved light guide sheet for out-coupling light in a planar manner on the basis of an at least five-layer novel structure. It is possible in particular to in-couple light from micro LEDs and to out-couple the light again in a both highly uniform and efficient manner by means of said novel structure. In particular, the light guide sheet consists of layers A, B, and C and colorless thermoplasts or reactive hotmelts which are printed in a structured manner and lie between said layers. There is no direct solid connection between the reflector film and the transparent panel.
The invention relates to an impact-resistant molding material, in particular impact-resistant PMMA, having an improved characteristics profile, in particular also at elevated temperatures, to molded articles obtained therefrom and to the use of the molding material and the molding articles.
The invention relates to an optimized method for producing methacrolein. Methacrolein is used in chemical synthesis, in particular as an intermediate product for producing methacrylic acid, methylmethacrylate or also active substances, odorous substances or flavourings. The invention also relates to the optimization of process parameters, as a result of which, the content of harmful dimer methacrolien in the end product can be reduced.
The invention relates to a method for preparing alpha-hydroxycarboxylic acid esters from hydrogen cyanide, wherein the ammonia produced during the alcoholysis step to which the corresponding alpha-hydroxycarboxamide is subjected is recycled for use in a hydrogen cyanide preparation method following a purification step.
The present invention comprises a novel dirt-repellent reactive resin sealing for markings or coating floor surfaces or roadways, such as streets, based on cold plastics. This sealing leads to a lower adhesion of dirt, in particular in hot and/or dry, dusty environments, compared with established systems from the prior art. The marking thus also retains better visibility in dry, hot regions than conventional markings. Further, the sealed marking according to the invention has comparable mechanical characteristics when compared with the prior art.
C09D 4/06 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups
C09D 133/06 - Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
64.
SANDWICH COMPONENTS COMPOSED OF POLY(METH)ACRYLATE-BASED FOAM BODIES AND OF REVERSIBLY CROSS-LINKABLE COMPOSITES
The present invention relates to a method for producing composite systems having reversibly cross-linking, fiber-reinforced cover layers and having a hard foam as a core layer. The composite systems have a high peel strength. In particular, the present invention relates to a method for producing composite systems having a poly(meth)acrylimide (P(M)I), in particular polymethacrylimide (PMI), foam core having reversibly cross-linkable cover layers. The present invention further relates to novel composite systems that can be produced by means of said method.
B32B 5/24 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer
B32B 5/28 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer impregnated with or embedded in a plastic substance
65.
METHOD FOR PRODUCING ALPHA-HYDROXY CARBOXYLIC ESTERS IN THE GAS PHASE
The present invention relates to a method for producing alpha-hydroxy carboxylic esters from the alcoholysis of alpha-hydroxy carboxamides in the gas phase, characterized in that the reaction takes place in the presence of water.
C07C 67/20 - Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group from amides or lactams
C07C 69/675 - Esters of carboxylic acids having esterified carboxyl groups bound to acyclic carbon atoms and having any of the groups OH, O-metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of saturated acids of saturated hydroxy-carboxylic acids
The invention relates to a method for manufacturing composites comprising a poly(meth)acrylimide (P(M)I), more particularly polymethacrylimide (PMI), foam core. The method is characterized in that the foam material is first covered with one or two layers or the like of a fibrous material and is then heated in a device using near IR radiation. The heated semi-finished product is then transferred to a press comprising heatable two-shell molds, where a resin is injected into the fibrous material and is hardened as the product is shaped.
B29C 70/46 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
B29C 70/86 - Incorporating in coherent impregnated reinforcing layers
B29C 70/08 - Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, with or without non-reinforced layers
B29B 13/02 - Conditioning or physical treatment of the material to be shaped by heating
B32B 5/18 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material
B29D 99/00 - Subject matter not provided for in other groups of this subclass
B29C 70/02 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
B29C 70/18 - Fibrous reinforcements only characterised by the structure of fibrous reinforcements using fibres of substantial or continuous length in the form of a mat, e.g. sheet moulding compound [SMC]
B29C 44/56 - After-treatment of articles, e.g. for altering the shape
B29C 35/08 - Heating or curing, e.g. crosslinking or vulcanising by wave energy or particle radiation
67.
DEHYDRATION OF ALPHA-SUBSTITUTED CARBOXYLIC ACIDS IN THE PRESENCE OF WATER AT HIGH PRESSURES
The present invention describes a method for dehydrating alpha-substituted carboxylic acids in the presence of water at high pressures while preventing by-products.
C07C 51/377 - Preparation of carboxylic acids or their salts, halides, or anhydrides by reactions not involving formation of carboxyl groups by splitting-off hydrogen or functional groupsPreparation of carboxylic acids or their salts, halides, or anhydrides by reactions not involving formation of carboxyl groups by hydrogenolysis of functional groups
68.
PRESSURE-DEPENDENT FOAM MOULDING OF POLY(METH)ACRYLIMIDE PARTICLES IN CLOSED MOULDS FOR PRODUCING RIGID FOAM CORES
The invention relates to a method for producing foam-moulded poly(meth)acrylimide (P(M)I) cores, in particular polymethacrylimide (PMI) cores, which can be used in automobile or aircraft construction, for example. The method is characterized in that a polymer granulate or powder preheated under pressure is filled into a pressing mold while still being under pressure, where same undergoes foaming as the pressure is relieved. The method is characterized in particular in that a preferably double-shelled pressing mold is optionally used for both heating and cooling the granulate and the hard foam core made therefrom.
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
B29C 44/44 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in the form of expandable particles or beads
B29K 33/00 - Use of polymers of unsaturated acids or derivatives thereof, as moulding material
69.
THREE-LAYER UV PROTECTIVE FILM FOR DECORATIVE LAMINATED SHEETS (HPL)
The present invention relates to novel films for application to materials as a film providing protection from weathering effects. In particular, the present invention relates to a novel, at least three-layered film composite characterized by particularly good adhesion to the substrate and particularly good optical properties. In this composite, the outermost layer is a layer that contains a fluoropolymer, the middle layer is a PMMA layer that contains at least one UV absorber and/or UV stabilizer, and the innermost layer is a PMMA layer that contains at least one adhesion promoter which improves adhesion to the substrate.
B32B 21/08 - Layered products essentially comprising wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, next to another layer of a specific substance of synthetic resinLayered products essentially comprising wood, e.g. wood board, veneer, wood particle board comprising wood as the main or only constituent of a layer, next to another layer of a specific substance of fibre-reinforced resin
B32B 27/08 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of synthetic resin of a different kind
B32B 27/10 - Layered products essentially comprising synthetic resin as the main or only constituent of a layer next to another layer of a specific substance of paper or cardboard
B32B 27/18 - Layered products essentially comprising synthetic resin characterised by the use of special additives
The invention refers to a nanoparticle with a diameter which is the maximum in the nanoparticle size distribution,in the range of 10 –300 nm, comprising a) a calcium phosphate nanoparticle core a), b) an active ingredient coating b) on the calcium phosphate nanoparticle core a), c) a lactic acid polymer coating c) on the active ingredient coating b), d) a cationic polymer coating d) on the lactic acid polymer coating c) selected from the group of polyethylene-imines, chitosan and human lactoferrin- derived peptides with a length of 14 to 30 amino acids.
The invention relates to a method for producing foam-moulded poly(meth)acrylimide (P(M)I), in particular polymethacrylimide (PMI) cores, which can be used for example in automobile or aircraft construction. The method is distinguished here by the fact that polymer pellets or powder is/are filled into a pressing mould, where it undergoes foaming. In particular, the method is distinguished by the fact that this two-shell pressing mould has on each of both sides a contour-following cavity, which serves both for the heating and cooling of the pellets, or of the rigid foam core formed therefrom.
B29C 44/44 - Feeding the material to be shaped into a closed space, i.e. to make articles of definite length in the form of expandable particles or beads
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
C08L 79/08 - PolyimidesPolyester-imidesPolyamide-imidesPolyamide acids or similar polyimide precursors
B29K 79/00 - Use of other polymers having nitrogen, with or without oxygen or carbon only, in the main chain, as moulding material
72.
DIRECTLY ATTACHING, HALOGEN-FREE, FAST-DRYING, HEAT-SEALING BINDER FOR SEALING POLYESTER FILMS TO POLYSTYRENE, POLYESTER OR PVC
The present invention encompasses a one-pack binder for heat-seal applications, useful for sealing polyester films, especially polyethylene terephthalate (PET) films, to polystyrene, PVC and polyester receptacles. Said polyesters may in particular be polyethylene terephthalate (PET) or polylactic acid (PLA). The binders here are particularly notable not only for good seal strengths but also for high transparency and excellent application qualities. A key aspect of the invention is the facility to seal without adding adhesion promoters, especially polyester- or polyvinyl chloride (PVC)-based adhesion promoters, while attaining, with respect to PS and PET receptacles, barrier and seal properties that at least match and sometimes exceed those of existing heat-seal systems available on the market.
The invention relates to a method for separating ammonia out of an alcoholic solution in the presence of carbonic acid compounds while avoiding formation of deposits, in that the solution to be separated is charged in the upper part of a distillation column and the temperature at the charging point is set such that the solubility of the ammonium salts of the relevant carbonic acid compound is produced under the operating conditions at the head of the distillation column.
The present invention relates to a method for producing high-purity glycerol dimethacrylate containing ឬ500 ppm glycidyl methacrylate, characterized by a subsequent treatment with an acidic adsorbent.
C07C 67/56 - SeparationPurificationStabilisationUse of additives by solid-liquid treatmentSeparationPurificationStabilisationUse of additives by chemisorption
The invention refers to a pharmaceutical or nutraceutical composition, comprising a) a core, comprising a pharmaceutical or a nutraceutical active ingredient, b) an inner coating layer comprising one or more salts of alginic acid and c) an outer coating layer comprising one or more water-insoluble polymers or copolymers and one or more water-soluble polymers, selected from the group of water soluble celluloses, polyvinyl pyrrolidones or polyethylene glycols or any combinations thereof. wherein the ratio by weight of the amount of the one or more salts of alginic acid in the inner coating layer to the amount of the one or more water-insoluble polymers or copolymers in outer coating layer is from 0.6 to less than 2.5 : 1.
The present invention relates to a process for preparing methyl methacrylate by a direct oxidative esterification of methacrolein with oxygen and methanol, which is conducted in the liquid phase at a pressure of 2 to 100 bar with a gold catalyst. According to the invention, the liquid phase is withdrawn continuously from the reactor and optionally enriched with oxygenous gas, the pH, after the withdrawal, is adjusted to a pH between 5 and 9 by means of addition of a basic solution and this liquid phase is conducted back into the reactor again to an extent of at least 50%.
The present invention relates to a catalytic continuous process for producing methyl methacrylate, said process comprising the step of reacting methacrolein with oxygen and methanol in the presence of a heterogeneous noble-metal-containing catalyst in an oxidative esterification reaction to give methyl methacrylate, characterized in that the stationary concentration of the starting material methacrolein is equal to or less than 12 % by weight based on the total weight of the reaction mixture in the reactor, and the ratio F between the total liquid volume within the reactor expressed in litres divided by the total weight of catalyst in the reactor expressed in kilograms is equal to or less than 4.
MMA resins are primarily used in casting molds for stone materials resistant to outdoor weather or for kitchen worktops. A procedure is thereby employed during which the material, in form of a readily pourable mass comprised of resin and filling agents is compacted and rendered air bubble-free in the casting mold by vibration. The material is then cured as a two-component mixture either at room temperature or at elevated temperature depending on the accelerator system. The present invention relates to such a resin that is odorless and can be applied with very low emissions and exhibits very high pourability even with highly loaded compositions. The present invention particularly relates to a resin for preparation of artificial stones, said resin containing a high-boiling (meth)acrylate as monomer component.
C09D 4/06 - Coating compositions, e.g. paints, varnishes or lacquers, based on organic non-macromolecular compounds having at least one polymerisable carbon-to-carbon unsaturated bond in combination with a macromolecular compound other than an unsaturated polymer of groups
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 224/00 - 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 a heterocyclic ring containing oxygen
C09D 133/06 - Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
The invention relates to a method for preparing methacrolein from propionaldehyde and formalin. Said novel method is characterized in that the catalyst system used for the conversion is modified by the simultaneous presence of secondary and tertiary amines in such a way that the synthesis can be performed more efficiently and requires less effort in the purification stage.
The invention relates to a method for producing prefoamed poly(meth)acrylimide (PMI) particles, which can be further processed into foam-moulded parts or composites. The method is thereby characterized in that a polymer granulate is initially heated in a device by means of infrared radiation at a wavelength suitable for this purpose and is thus prefoamed. In subsequent method steps, e.g. in a pressing tool, this granulate can be further processed, by foaming, into a moulded part or a composite workpiece with a foam core.
C08J 9/22 - After-treatment of expandable particlesForming foamed products
C08J 9/04 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent
B29C 44/34 - Component parts, details or accessoriesAuxiliary operations
C08J 9/232 - Forming foamed products by sintering expandable particles
The present invention relates to a continuous or semi-continuous freezing coagulation method for aqueous polymer dispersions. The method comprises a freezing step and a solid-liquid separation step and is furthermore characterized in that it comprises the additional step of adding water and/or water vapor between the freezing step and the solid-liquid separation step.
The invention relates to a method for manufacturing composites with a poly(meth)acrylimide (P(M)I), more particularly polymethacrylimide (PMI), foam core. The method is characterised in that the foam material is first heated in an apparatus using near-IR radiation, and is transferred to a press having heatable two-shell tools where it is joined to two prepregs.
B29C 70/46 - Shaping or impregnating by compression for producing articles of definite length, i.e. discrete articles using matched moulds, e.g. for deforming sheet moulding compounds [SMC] or prepregs
B29C 70/86 - Incorporating in coherent impregnated reinforcing layers
B29D 99/00 - Subject matter not provided for in other groups of this subclass
B29C 70/08 - Fibrous reinforcements only comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, with or without non-reinforced layers
B29B 13/02 - Conditioning or physical treatment of the material to be shaped by heating
B29C 70/02 - Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising combinations of reinforcements and fillers incorporated in matrix material, forming one or more layers, with or without non-reinforced or non-filled layers
B29C 70/18 - Fibrous reinforcements only characterised by the structure of fibrous reinforcements using fibres of substantial or continuous length in the form of a mat, e.g. sheet moulding compound [SMC]
B29C 44/56 - After-treatment of articles, e.g. for altering the shape
B29C 35/08 - Heating or curing, e.g. crosslinking or vulcanising by wave energy or particle radiation
83.
HONEYCOMB STRUCTURES FILLED WITH POLY(METH)ACRYLAMIDE FOAM
The invention relates to a method for producing honeycomb structures filled with poly(meth)acrylamide (P(M)I) foams. The method involves filling the individual cells of a honeycomb structure with preferably pre-expandable P(M)I particles, and subsequently thermally filling said cells with foam. The invention also relates to the novel materials produced using the method according to the invention, which materials, as well as being very low in weight, combine the advantages of the honeycomb structures, such as high vertical loading capacity and impact resistance, with the advantages of the P(M)I foams, in particular the high pressure loading capacity in all directions and the high rigidity.
C08J 9/232 - Forming foamed products by sintering expandable particles
C08J 9/04 - Working-up of macromolecular substances to porous or cellular articles or materialsAfter-treatment thereof using blowing gases generated by a previously added blowing agent
B32B 3/12 - Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shapeLayered products comprising a layer having particular features of form characterised by a discontinuous layer, i.e. apertured or formed of separate pieces of material characterised by a layer of regularly-arranged cells whether integral or formed individually or by conjunction of separate strips, e.g. honeycomb structure
B32B 5/20 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by features of a layer containing foamed or specifically porous material foamed in situ
C08J 9/20 - Making expandable particles by suspension polymerisation in the presence of the blowing agent
C08J 9/22 - After-treatment of expandable particlesForming foamed products
B32B 5/28 - Layered products characterised by the non-homogeneity or physical structure of a layer characterised by the presence of two or more layers which comprise fibres, filaments, granules, or powder, or are foamed or specifically porous one layer being a fibrous or filamentary layer impregnated with or embedded in a plastic substance
The present invention relates to a novel method for producing novel fibre-reinforced profile materials, which are filled with a rigid foam core, in particular a PMI foam core. In particular, the present invention relates to a novel method that can be carried out in two variants, a short pultrusion-compression method (Figure 1) and a pultrusion-shaping method (Figure 2). A fibre-reinforced profile material is thereby produced and at the same time filled with the rigid foam core (1, 2) in one method step. Furthermore, very good bonding of the rigid foam core (1, 2) to the fibre-reinforced profile material (12) is ensured in the same method step.
The invention relates to a method for producing methacrylic acid esters from hydroxy-functional benzophenones and use thereof. According to the claimed method, methacrylated benzophenones (benzophenon(meth)acrylates) can be produced simply, with high purity and in high yield.
C07C 67/08 - Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
The invention relates to a method for producing methylmethacrylate by direct oxidative esterification of methacrolein and to the production of methacrolein. Said novel method is characterized in that the output and the efficiency of the process, with respect to state of the art, can be significantly increased due to a sequence of different distillation steps.
The invention refers to a Process for preparing a bio-resorbable polyester the form of a powder with a bulk density of 0.3 g/ml or more, a tapped density of 0.4 g/ml or more and a specific surface area of 2.0 m2/g or less comprising the steps a. dissolving a bio-resorbable polyester in a first solvent to form a polymer solution, b. contacting the polymer solution with a second solvent which is a non-solvent for the bioresorbable polyester and which is mainly water to result the precipitation of the bio-resorbable polyester in the form of a wet polymer mass, c. pre-drying the wet polymer mass at a temperature below the TgO of the bio-resorbable polyester, d. comminuting the pre-dried polymer mass to polymer particles with a size below 10 mm, e. drying the comminuted polymer particles below the TgO of the bio-resorbable polyester to a residual water content of 1 % or less by weight/weight, f. post-treatment of the polymer particles from step e at a temperature in the range from the TgO to the TgE of the bio-resorbable polyester, g. comminuting the polymer particles from step f to a powder with a particle size of d50 of 1 - 300 μm and d90 of more than 30 and up to 3000 μm.
The invention refers to a process for preparing a redispersible powder from a granulate of a water-insoluble, biodegradable polyester including the steps a) mixing a granulate of a water-insoluble, biodegradable polyester with a water- soluble plasticizer with a molecular weight of 100 or more, at a ratio of at least 7.5 parts per weight of the plasticizer per 1 part per weight of the water-insoluble, biodegradable polyester, to give a dispersion or solution, b) mixing the dispersion or solution from step a) with water at a ratio of at least 5 parts per weight of water per 1 part of weight of the dispersion or solution, to obtain an emulsion, c) homogenizing the emulsion from step b) by means of high shear mixing to promote the transfer of the water-soluble plasticizer to the water phase and to precipitate the water-insoluble, biodegradable polyester, d) filtrating the mixture from step c) to gain the filtrated mass, e) re-dispersion the filtrated mass in water by means of high shear mixing f) filtrating the dispersion from step e) to obtain the filtrated mass, g) repeating steps e) and f) for at least one time, h) drying of the final filtrated mass, i) collection of the dried mass as the redispersible powder.
C08J 3/03 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
C08J 3/05 - Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
The invention refers to a coating composition which, calculated on dry weight, is comprising at least 20 % by weight polyvinyl alcohol and 0.1 to 20 % by weight, calculated on the weight of the polyvinyl alcohol, of a water-insoluble (meth)acrylate copolymer comprising quaternary ammonium groups, wherein the viscosity of an aqueous dispersion comprising that coating composition with 25 % (w/w) solid content at 22 °C is 200 mPa.s or less.
A61K 31/40 - Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having five-membered rings with one nitrogen as the only ring hetero atom, e.g. sulpiride, succinimide, tolmetin, buflomedil
90.
LIGHT GUIDE PLATE AND METHOD FOR THE PRODUCTION THEREOF
The invention relates to novel light guide plates which consists of a reflector film, a transparent plate and printed colourless thermoplasts or reactive hotmelts, which are structured and arranged therebetween. There is no solid direct connection between the reflector film and the transparent plate.
The present invention relates to the oxidative combustion of amine-containing waste water, in particular in a method for producing methacrolein, the disposal being carried out by combustion in a thermal oxidizer. In particular, the present invention relates to oxidative combustion of the amine-containing waste water with only little nitrogen oxide formation.
F23G 7/04 - Methods or apparatus, e.g. incinerators, specially adapted for combustion of specific waste or low grade fuels, e.g. chemicals of waste liquors, e.g. sulfite liquors
92.
METHOD OF REGULATING THE WATER CONTENT IN A CONTINUOUS METHOD FOR PRODUCING METHACROLEIN
The invention concerns the regulating of the water content in a method for producing methacrolein. Methacrolein is used in chemical synthesis, in particular as an intermediate product for producing methacrylic acid, methylmethacrylate or also active substances, odorous substances or flavourings. The present invention concerns in particular the regulating of the water content in a method for producing methacrolein from formaldehyde and propionaldehyde by means of Mannich condensation.
The invention relates to a method for producing alpha-hydroxycarboxylic acid esters by the alcoholysis of the corresponding alpha-hydroxycarboxylic acid amides using heterogeneous catalysis.
C07C 67/20 - Preparation of carboxylic acid esters by conversion of a group containing nitrogen into an ester group from amides or lactams
C07C 69/675 - Esters of carboxylic acids having esterified carboxyl groups bound to acyclic carbon atoms and having any of the groups OH, O-metal, —CHO, keto, ether, acyloxy, groups, groups, or in the acid moiety of saturated acids of saturated hydroxy-carboxylic acids
94.
PERSONALIZED DETECTION SYSTEM FOR DETECTING MAGNETIC OBJECTS IN THE HUMAN ORGANISM
The invention relates to a device comprising a sensor arrangement which is capable of detecting magnetic or magnetized oral dosage forms after oral intake and tracks the dissolution thereof through the decrease in or disappearance of the magnetic field of the oral dosage form. Said device further has a logbook function, which records a subjective evaluation by the human wearer of the sensor arrangement during or after the oral intake.
The invention relates to a method for producing alpha-beta-unsaturated carboxylic acids by dehydrating alpha-substituted hydroxy or alkoxy carboxylic acids, in particular by dehydrating 2-hydroxy isobutyric acid, while avoiding the accumulation of by-products and admixed additives.
The invention relates to a composite system, preferably a multilayer film, with high impact strength and a high softening point, and to a method for producing same and to the use thereof.
The invention relates to a process for stabilizing the drug release profile of a polymer film coated pharmaceutical composition, wherein the pharmaceutical composition comprises a core comprising an active pharmaceutical ingredient and a polymer film coating onto the core which was applied by a spray coating process, including a subsequent drying step, by applying microwave-irradiation, infrared-irradiation, UV-irradiation or ultra sonic wave irradiation to the polymer film coated pharmaceutical compositions.
The invention relates to a plastic layered composite, in particular for vehicle glazing. The composite consists of at least three layers, the two outer layers consisting of a transparent poly(methyl methacrylate) (PMMA) and the inner layer consisting of a thermoplastic polyurethane (TPU). The plastic layered composite passes the ECE R43 ball impact test and has improved acoustic properties compared to prior art plastic composites of the same dimensions.
The invention relates to a method for producing thermal energy and carbon monoxide (CO) by the aluminothermic reduction of carbon dioxide, characterized in that aluminum (Al) and carbon dioxide (CO2) are brought to reaction in a combustion furnace substantially without a supply of oxygen gas by supplying ignition energy and are combusted to form corundum (Al2O3) and carbon monoxide (CO). The invention further relates to the use of aluminum in the method according to the invention, to a combustion furnace, and to a power plant.
F01K 3/18 - Plants characterised by the use of steam or heat accumulators, or intermediate steam heaters, therein having heaters
F22B 1/18 - Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
F24V 30/00 - Apparatus or devices using heat produced by exothermal chemical reactions other than by combustion
The invention relates to a method for producing methylmethacrylate, comprising the steps: A) producing methacrolein and B) conversion of the methacrolein obtained in step A) into methylmethacrylate in an oxidative esterification reaction, characterized in that the two steps A) and B) are carried out in liquid phase at a pressure of 2 to 100 bar and step B) is carried out in the presence of a heterogeneous, noble metal-contaiing catalyst comprising metals and/or metal oxides.
