Abstract:
A graft copolymer is formed by copolymerization of (A) a macromonomer and (B) a monomer. The macromonomer (A) is a polymer of (a) an ester monomer between an addition-polymerizable, unsaturated carboxylic acid and an aliphatic alcohol and (b) an addition-polymerizable monomer having an acidic group. The polymer contains an addition-polymerizable group at an end thereof, and has an acid value of from 100 to 300. The monomer (B) is an addition-polymerizable monomer. Units of the macromonomer (A) amount to from 20 to 50 wt.% of the whole graft copolymer, and units of the monomer (B) amount to from 50 to 80 wt.% of the whole graft copolymer.
Abstract:
PROBLEM TO BE SOLVED: To provide a sound absorbing member excellent in adhesion, recyclability, and sound absorbing performance.SOLUTION: The sound absorbing member comprises a foam formed of at least an ionomer resin, wherein the ionomer resin is an ionomer resin (X1) that comprises: (A) 100 pts.mass of an olefin polymer; and (B) 0.01-100 pts.mass of a metal salt having at least two functional groups (b) containing a metal component, wherein the foam satisfies the following requirements (1)-(4). (1) The density is 0.0090-0.20 g/cm. (2) The closed cell ratio is at least 0% and less than 60%. (3) The mean diameter of a cell is at least 10 μm and at most 2,000 μm. (4) The mean diameter of the hole that penetrates through the wall surface between a cell and a cell is at least 1.0 μm.
Abstract:
The present invention provides an aqueous resin dispersion composition prepared by neutralizing an acid-modified chlorinated polyolefin with a basic substance and dispersing the neutralized acid-modified chlorinated polyolefin in water; and a process for producing an aqueous resin dispersion composition comprising the steps of dissolving an acid-modified chlorinated polyolefin in an ethereal solvent, neutralizing the acid-modified chlorinated polyolefin by a basic substance, dispersing the neutralized acid-modified chlorinated polyolefin in water, and removing the ethereal solvent.
Abstract:
A polyolefin wax-containing aqueous resin composition that can provide excellent properties without the use of a surfactant is provided. The aqueous resin composition is obtained by heating and dissolving 100 parts by mass of a carboxyl group-containing polyolefin wax in the presence of 15 to 67 parts by mass of a compound that satisfies general formula (1) shown below, and 90 to 380 parts by mass of water, and then dispersing this with a basic compound that has been added at a ratio of 1 to 4 chemical equivalents per carboxyl group of the carboxyl group-containing polyolefin wax. €ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒGeneral Formula (1) C m H 2m+1 -(OCH 2 CH 2 ) n -OH m: an integer from 4 to 6, n: an integer from 1 to 4
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a crosslinked polymer, which can produce, inexpensively and on an industrial scale, the crosslinked polymer having a low specific volume resistance, a low permeability for hydrogen, oxygen and methanol, and a very good mechanical stability especially in an improved modulus, a high tensile strength and improved swelling properties, and capable of being used in fuel cells or the like.SOLUTION: Especially preferred polymers are covalently and ionically crosslinked polymers obtained, for example, by sulfonic acid modification of polymers such as polyarylethers, polyarylthioethers, polysulfones, polyether ketones, polypyrroles, polythiophenes, polyazoles, phenylenes, polyphenylenevinylenes, polyanilines, polyazulenes, polycarbazoles, polypyrenes, polyindophenines and polyvinylpyridines, especially polyarylethers.