This method for producing fine particles includes: a step for forming a polyion complex by ion-bonding an ionic active material and an ionic polymer; and a step for forming fine particles which contain the polyion complex and at least one polymer (P) that is selected from among a polylactic acid and a lactic acid-glycolic acid copolymer. The step for forming fine particles includes: a step for mixing the polyion complex and the polymer (P) in an organic solvent; a step for forming an o/w emulsion by adding the organic solvent after mixing, the organic solvent containing the polyion complex and the polymer (P), to an aqueous solution in which a dispersant for preventing bonding between emulsions is dissolved; and a step for removing the organic solvent from the aqueous solution that contains the o/w emulsion.
C08J 3/16 - Powdering or granulating by coagulating dispersions
2.
PLANT PROTEIN FLAVOR-IMPROVING AGENT, PLANT PROTEIN PHYSICAL PROPERTY–IMPROVING AGENT, AND FOOD OR BEVERAGE PRODUCT CONTAINING PLANT PROTEIN FLAVOR-IMPROVING AGENT AND PLANT PROTEIN PHYSICAL PROPERTY–IMPROVING AGENT
Provided are: a plant protein flavor-improving agent and a plant protein physical property–improving agent that are characterized by containing one or more substance selected from the group that consists of lactic acid, metal salts of lactic acid, and alanine as an active ingredient; and a food or beverage product that uses the plant protein flavor-improving agent and the plant protein physical property–improving agent. The present invention thereby provides a flavor- and physical property–improving technology for increasing the palatability of food or beverage products that use plant proteins.
Process for producing organic acid ester-type liquid, and process for producing solvent of resist for producing electronic part or rinsing liquid for producing electronic parts
A process for producing an organic acid ester-type liquid is disclosed which is a process for removing an organic peroxide contained in an organic acid ester-type liquid which is a solvent of a resist for producing electronic parts or an organic acid ester-type liquid which is a rinsing liquid for producing electronic parts, which comprises contacting the organic acid ester-type liquid with a platinum group metal catalyst to remove the organic peroxide in the organic acid ester-type liquid, and a resist solvent for producing electronic parts or a rinsing liquid for producing electronic parts which comprises an organic acid ester-type liquid in which an organic peroxide contained therein has been removed by using the producing process and a peroxide value (POV) thereof is 2 mmoL/kg or less.
G03F 7/32 - Liquid compositions therefor, e.g. developers
G03F 7/40 - Treatment after imagewise removal, e.g. baking
H01L 21/027 - Making masks on semiconductor bodies for further photolithographic processing, not provided for in group or
4.
METHOD FOR PRODUCING ORGANIC ACID ESTER-BASED LIQUID, AND METHOD FOR PRODUCING RESIST SOLVENT FOR MANUFACTURING ELECTRONIC COMPONENTS OR RINSE AGENT FOR MANUFACTURING ELECTRONIC COMPONENTS
The present invention addresses the problem of providing a method for precisely manufacturing electronic components so as to have fewer defective products and better yield, and in particular, the problem of providing a method whereby a superior resist solution and a rinse agent can be provided, in the steps of the manufacture of electronic components using a liquid. The problem is solved by: a method for producing an organic acid ester-based liquid in which an organic peroxide is removed, such peroxide being contained in an organic acid ester-based liquid that is a resist solvent for manufacturing electronic components or in an organic acid ester-based liquid that is a rinse agent for manufacturing electronic components, wherein the method is characterized by removing the organic peroxide in the organic acid ester-based liquid by bringing the organic acid ester-based liquid into contact with a platinum-group metal catalyst; and a resist solvent for manufacturing electronic components or a rinse agent for manufacturing electronic components, such solvent or agent being obtained by using such producing method and removing the organic peroxide contained in the organic acid ester-based liquid and having the peroxide value (POV) of 2 mmoL/kg or less.
Provided is a method for purifying an aliphatic polyester which reduces coloring of the aliphatic polyester, reduces the amount of residual monomer and residual catalyst, and improves stability and appearance. This method for purifying an aliphatic polyester subjects an aliphatic polyester containing a monomer to heat treatment under dry air containing oxygen at a temperature at or above the melting point of the monomer and at or below the melting point of the aliphatic polyester.
C08G 63/06 - Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxy carboxylic acids
Provided is a method for purifying an aliphatic polyester which reduces coloring of the aliphatic polyester, reduces the amount of residual monomer and residual catalyst, and improves stability and appearance. This method for purifying an aliphatic polyester subjects an aliphatic polyester containing a monomer to heat treatment under dry air containing oxygen and at a temperature at or above the melting point of the monomer and at or below the melting point of the aliphatic polyester.
C08G 63/06 - Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxy carboxylic acids
The taste (especially aroma and richness) of various food products such as chili oil, broad bean chili paste, red pepper miso with garlic, XO sauce, pepper sauce, peperoncino-infused oil, sweet flour paste, tahini, oyster sauce, Chinese noodles, Chinese wine, almond pudding, and teas such as oolong and jasmine, Japanese dumplings, steamed meat dumplings, wonton, Chinese rice porridge, Chinese steamed buns, and vegetable puree can be enhanced by blending in alanine.
A composition that enables the hygroscopicity of sodium stearoyl lactylate to be improved is provided. The present invention pertains to a composition containing sodium stearoyl lactylate and dietary fiber.
A21D 10/00 - Batters, dough or mixtures before baking
A23G 3/34 - Sweetmeats, confectionery or marzipanProcesses for the preparation thereof
A23G 3/48 - Sweetmeats, confectionery or marzipanProcesses for the preparation thereof characterised by the composition containing plants or parts thereof, e.g. fruits, seeds, extracts
It is an object of the present invention to provide a method for producing a polylactic acid block copolymer having high molecular weight, and in lower cost, wherein only a stereo-complex crystal is capable of growing, even when heat melting process is repeated. The present invention relates to a method for producing a polylactic acid block copolymer characterized in that (i) ring-opening polymerization of D-lactide (D component) is carried out in the presence of poly-L-lactic acid (L component), or (ii) ring-opening polymerization of L-lactide (L component) is carried out in the presence of poly-D-lactic acid (D component), and mass ratio of the D component and the L component is the D component/the L component=60/40 to 91/9, or the L component/the D component=60/40 to 91/9.
Provided is a process for the production of polylactic acid, by which a high-molecular-weight polylactic acid can be obtained at a low cost. A process for the production of polylactic acid which comprises polymerizing molten lactide using at least one plug flow reactor that has a ξ(τ) value of 0.3 or smaller as calculated from numerical formula (1) [wherein E(τ) is a residence time distribution function found by an impulse response method with a starch syrup having a viscosity of 3Pa∙s, and τ is the ratio of elapsed time (θ) to mean residence time (θ0)].
Provided are: a polylactic acid composition having extremely good molding processability; and a method for producing the same. A polylactic acid composition comprising poly-L-lactic acid and a polylactic acid block copolymer in which the mass ratio of an L-lactic acid unit to a D-lactic acid unit is from 50/50 to 91/9 (L-lactic acid unit/D-lactic acid unit); a polylactic acid composition comprising poly-D-lactic acid and a polylactic acid block copolymer in which the mass ratio of an L-lactic acid unit to a D-lactic acid unit is from 49/51 to 9/91 (L-lactic acid unit/D-lactic acid unit); and a method for producing the same.
Disclosed are: a composition comprising a polylactic acid, which is improved in the injection-moldability; and an injection-molded article formed from the composition. Specifically disclosed is a specific polylactic acid composition satisfying all of the following requirements (a) to (g): (a) the weight average molecular weight is 70,000 to 700,000 (inclusive); (b) the total content of an Sn atom, a Ti atom, an Al atom and a Ca atom is 3 to 20 ppm (inclusive); (c) the content of a P atom is 3 to 3000 ppm (inclusive); (d) the ratio of the total number of gram-atoms of Sn, Ti, Al and Ca to the number of gram-atoms of P is 0.01 to 5 (inclusive); (e) the content of a compound having a molecular weight of 150 or less is 0.2% by weight or less; (f) the concentration of a COOH terminal group is 30 equivalents/ton or less; and (g) the melt viscosity (P) at a melting temperature of 230°C satisfies the following formula (1). 10 Pa s ឬ P ឬ 100 Pa s (1)
Disclosed are: a composition comprising a polylactic acid, which is improved in the blow-moldability; and a blow-molded article produced from the composition. Specifically disclosed is a polylactic acid composition satisfying all of the following requirements (a) to (g): (a) the weight average molecular weight is 70,000 to 700,000 (inclusive); (b) the total content of an Sn atom, a Ti atom, an Al atom and a Ca atom is 3 to 20 ppm (inclusive) (in terms of the contents of metals); (c) the content of a P atom is 3 to 3000 ppm (inclusive); (d) the ratio of the total number of gram-atoms of Sn, Ti, Al and Ca to the number of gram-atoms of P is 0.01 to 5 (inclusive); (e) the content of a compound having a molecular weight of 150 or less is 0.2% by weight or less; (f) the concentration of a COOH terminal group is 30 equivalents/ton or less; and (g) the following formulae (1) and (2) are satisfied: 10 Pa s ឬ P ឬ 100 Pa s (1); and 10 MPa ឬ S (2) wherein P represents a melt viscosity at 230°C; and S represents a stress at 150°C.
Disclosed is a polylactic acid composition which is excellent in crystallinity, wet heat stability and melt stability. Also disclosed is a molded article which is made from a polylactic acid composition and has excellent appearance and color tone. Specifically disclosed is a composition containing a polylactic acid (component A), a carbodiimide compound (component B) and a metal phosphate salt (component C). Also specifically disclosed is a molded article of such a composition.
C08K 5/523 - Esters of phosphoric acids, e.g. of H3PO4 with hydroxyaryl compounds
C08L 79/00 - Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen, or carbon only, not provided for in groups
C08L 101/16 - Compositions of unspecified macromolecular compounds the macromolecular compounds being biodegradable
The present invention aims to produce a polylactic acid having a high weight average molecular weight (Mw) exceeding 100,000, wherein only a stereocomplex crystal is grown when melting and re-crystallization are repeated. Specifically disclosed is a method for producing a polylactic acid, which comprises a step (i) wherein a poly-L-lactic acid and a poly-D-lactic acid are mixed at a temperature of 160-225˚C and crystallized, thereby obtaining a solid, and a step (ii) wherein the thus-obtained solid is subjected to melt-mixing.
C08L 67/04 - Polyesters derived from hydroxy carboxylic acids, e.g. lactones
C08G 63/06 - Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxy carboxylic acids
A process for producing a polylactic acid block copolymer which has a high molecular weight, has a lower cost, and is capable of growing stereocomplex crystals only even when repeatedly heated/melted. The process for polylactic acid block copolymer production is characterized in that (i) D-lactide (ingredient D) is polymerized by ring-opening polymerization in the presence of poly-L-lactic acid (ingredient L) or (ii) L-lactide (ingredient L) is polymerized by ring-opening polymerization in the presence of poly-D-lactic acid (ingredient D) and that the ratio between the mass of the ingredient (D) and that of the ingredient (L) is such that ingredient (D)/ingredient (L) is from 60/40 to 91/9 or ingredient (L)/ingredient (D) is from 60/40 to 91/9.
C08G 63/06 - Polyesters derived from hydroxy carboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from hydroxy carboxylic acids
C08L 101/16 - Compositions of unspecified macromolecular compounds the macromolecular compounds being biodegradable
17.
POLYLACTIC ACID FIBER AND METHOD FOR PRODUCING THE SAME
Disclosed is a fiber composed of a polylactic acid and having excellent strength, heat resistance and thermal shrinkage resistance. Also disclosed is a method for producing such a fiber. Specifically disclosed is a fiber composed of a composition containing (i) a poly(L-lactic acid) having a weight average molecular weight of 50,000-300,000 (component A), (ii) a poly(D-lactic acid) having a weight average molecular weight of 50,000-300,000 (component B), and (iii) a phosphoric acid ester metal salt (component C) in an amount of 0.01-5 parts by weight per 100 parts by weight of the total of the component A and the component B. This fiber has a strength of 2.5-10 cN/dTex. Also specifically disclosed is a method for producing such a fiber.
D01F 6/92 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
D03D 15/00 - Woven fabrics characterised by the material, structure or properties of the fibres, filaments, yarns, threads or other warp or weft elements used
D04H 1/42 - Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
Disclosed is a method for producing a stereocomplex polylactic acid having high melting point and high molecular weight, wherein only stereocomplex crystals are grown when melting and crystallization are repeated. Specifically disclosed is a method for producing a polylactic acid, which comprises a step (1) for obtaining a first polylactic acid by ring-opening polymerization of a first lactide composed of lactic acid units of the same chirality; a step (2) for obtaining a purified first polylactic acid by removing the lactide from the first polylactic acid in a molten state under a reduced pressure; a step (3) for obtaining a second polylactic acid by ring-opening polymerization of a second lactide having a chirality different from that of the first lactide in the presence of the purified first polylactic acid; and a step (4) for obtaining a purified second polylactic acid by removing the lactide from the second polylactic acid in a molten state under a reduced pressure.
Disclosed is a composition which contains a polylactic acid and is excellent in thermal stability, mechanical strength and hue. Specifically disclosed is a composition containing 0.001-0.1 part by weight of a metal catalyst and 0.001-0.5 part by weight of a phosphonofatty acid ester per 100 parts by weight of a polylactic acid.
Disclosed is a composition containing a polylactic acid, which is excellent in thermal stability, hue, and hydrolysis resistance. The composition contains (i) a polylactic acid, (ii) a metal catalyst and (iii) a phosphinic acid type quencher or a metaphosphoric acid type quencher.
Disclosed is a composition containing a stereocomplex polylactic acid which is excellent in thermal stability, mechanical strength and hue. Specifically disclosed is a composition containing a stereocomplex polylactic acid, a metal polymerization catalyst, and (i) a phosphate quencher and a phenol antioxidant or (ii) an imine compound. Also disclosed are a fiber composed of such a composition and methods for producing those.
D01F 6/62 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from homopolycondensation products from polyesters
D01F 6/92 - Monocomponent man-made filaments or the like of synthetic polymersManufacture thereof from mixtures of polycondensation products as major constituent with other polymers or low-molecular-weight compounds of polyesters
C08L 101/16 - Compositions of unspecified macromolecular compounds the macromolecular compounds being biodegradable
patents
