Aqueous resin composition and method of producing the same

Patent metadata

Field	Value
Publication number	US-9290625-B2
Application number	US-99585306-A
Country	US
Kind code	B2
Filing date	Jul 21, 2006
Priority date	Jul 22, 2005
Publication date	Mar 22, 2016
Grant date	Mar 22, 2016

Abstract

An aqueous resin composition that can provide excellent properties using a high molecular weight resin and less amount of 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 with an average molecular weight of 37,000 to 150,000 in the presence of 2 to 30 parts by weight of a surfactant, 10 to 50 parts by mass of a glycol ether-based compound that satisfies general formula (1) shown below, and 150 to 425 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. General Formula (1) C 4 H 9 —(OCH 2 CH 2 ) n —OH n: an integer from 1 to 4.

First claim

The invention claimed is:

1. A method of producing an aqueous resin composition, comprising:
a first step of mixing
(a) 100 parts by mass of acid-modified chlorinated polyolefin with a weight-average molecular weight of 37,000 to 150,000,
(b) 2 to 30 parts by mass of a surfactant,
(c) 10 to 50 parts by mass of a glycol ether-based compound that satisfies C 4 H 9 —(OCH 2 CH 2 ) n —OH (Formula (1)) wherein n is an integer from 1 to 4, and
(d) 150 to 425 parts by mass of water
to obtain a mixture;
a second step of heating the mixture;
a third step of adding (e) a basic compound to the mixture obtained by the second step at a ratio of 1 to 4 chemical equivalents per carboxyl group of the acid-modified chlorinated polyolefin;
and a fourth step of mixing the mixture obtained by the third step;
wherein (e) the basic compound is at least one member selected from the group consisting of sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate, ammonium carbonate, triethylamine, N,N-dimethylethanolamine, aminoethanolamine, N-methyl-N,N-diethanolamine, isopropylamine, iminobispropylamine, ethylamine, diethylamine, 3-ethoxypropylamine, 3-diethylaminopropylamine, sec-butylamine, propylamine, methylaminopropylamine, methyliminobispropylamine, 3-methoxypropylamine, monoethanolamine, diethanolamine, triethanolamine, morpholine, N-methylmorpholine, N-ethylmorpholine, 2-amino-2-methyl-1-propanol, 2-dimethylamino-2-methyl-1-propanol, and ammonia.

2. The method of claim 1 , wherein the acid-modified chlorinated polyolefin is produced by
(i) obtaining an acid-modified polyolefin by graft-copolymerizing at least one species selected from the group consisting of α,β-unsaturated carboxylic acids and anhydrides thereof in an amount of 0.6 to 10 mass % with at least one species selected from the group consisting of polypropylene and a propylene-α-olefin copolymer, and
(ii) chlorinating the acid-modified polyolefin.

3. The method of claim 1 , wherein the chlorine content of the acid-modified chlorinated polyolefin is 10 to 35 mass %.

Assignees

• Kashihara Kenji
• Matsuoka Hideo
• Toyo Boseki

Inventors

• Kashihara Kenji
• Matsuoka Hideo

Classifications

• C08F2800/10

  as molar percentages · CPC title

• C08F8/22

  by reaction with free halogens · CPC title

• C08L51/06

  grafted on to homopolymers or copolymers of aliphatic hydrocarbons containing only one carbon-to-carbon double bond · CPC title

• C08F222/06

  Maleic anhydride · CPC title

• C08L23/28 Primary

  by reaction with halogens or halogen-containing compounds (C08L23/32 takes precedence) · CPC title