Aqueous Resin Composition and Method of Producing the Same
An aqueous resin composition that can provide excellent properties without the use of a surfactant, and also that does not require a complicated production procedure, is provided. The aqueous resin composition is obtained by heating and dissolving 100 parts by mass of acid-modified chlorinated polyolefin in the presence of 20 to 67 parts by mass of a glycol ether-based compound that satisfies general formula (1) shown below, and 50 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 acid-modified chlorinated polyolefin. C 4 H 9 —(OCH 2 CH 2 ) n —OH General Formula (1) n: an integer from 1 to 4
1 . An aqueous resin composition,
formed by heating and dissolving 100 parts by mass of acid-modified chlorinated polyolefin in the presence of 20 to 67 parts by mass of a glycol ether-based compound that satisfies general formula (1) shown below, and 50 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 acid-modified chlorinated polyolefin.
C 4 H 9 —(OCH 2 CH 2 ) n —OH General Formula (1)
n: an integer from 1 to 4
2 . The aqueous resin composition according to claim 1 ,
wherein the acid-modified chlorinated polyolefin is obtained by graft-copolymerization of at least one species selected from α,β-unsaturated carboxylic acids and anhydrides thereof in an amount of 0.6 to 10 mass % with at least one species selected from polypropylene and a propylene-α-olefin copolymer.
3 . The aqueous resin composition according to claim 1 ,
wherein the chlorine content of the acid-modified chlorinated polyolefin is 10 to 35 mass %.
4 . The aqueous resin composition according to claim 1 ,
wherein the acid-modified chlorinated polyolefin has a weight-average molecular weight of 10,000 to 100,000.
5 . A method of producing an aqueous resin composition by heating and dissolving 100 parts by mass of acid-modified chlorinated polyolefin in the presence of 20 to 67 parts by mass of a glycol ether-based compound that satisfies general formula (1), and 50 to 380 parts by mass of water, and then adding a basic compound at a ratio of 1 to 4 chemical equivalents per carboxyl group of the acid-modified chlorinated polyolefin.