| 发明名称 |
Polymeric Thickeners |
| 摘要 |
The present invention is concerned with an emulsion copolymer latex comprising an acrylic/methacrylic copolymer obtainable by the emulsion copolymerisation of the following monomer components: A: from 75% weight to 97.5% by weight, based on the total weight of monomer components A+B+C+D, of methyl acrylate; B: from 0.1% to 15% by weight, based on the total weight of monomer components A+B+C+D, of at least one ethylenically unsaturated carboxylic acid monomer containing one C≡C double bond capable of free radical copolymerisation with component A and at least one carboxylic acid (CO2H) group; C: from 1% to 20% by weight based on the total weight of monomer components A+B+C+D of at least one associative monomer being a (meth)acrylate ester of an alkoxylated alcohol; and D: from 0% to 15% by weight of one or more non-ionic ethylenically unsaturated monomers other than those defined above as A, B or C; wherein the total monomer components A+B+C+D together add up to 100%. The present invention also provides a composition suitable for use as a pH responsive thickener comprising the hydrolysis product of the emulsion copolymer latex. |
| 申请公布号 |
US2014336335(A1) |
申请公布日期 |
2014.11.13 |
| 申请号 |
US201214358142 |
申请日期 |
2012.11.16 |
| 申请人 |
Scott Bader Company Limited |
发明人 |
Stanion Mark Thomas;Hunt Paul Edward |
| 分类号 |
C08F220/18 |
主分类号 |
C08F220/18 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An emulsion copolymer latex comprising an acrylic/methacrylic copolymer obtainable by the emulsion copolymerisation of the following monomer components:
A: from 75% weight to 97.5% by weight, based on the total weight of monomer components A+B+C+D, of methyl acrylate; B: from 0.1% to 15% by weight, based on the total weight of monomer components A+B+C+D, of at least one ethylenically unsaturated carboxylic acid monomer containing one C≡C double bond capable of free radical copolymerisation with component A and at least one carboxylic acid (CO2H) group; C: from 1% to 20% by weight based on the total weight of monomer components A+B+C+D of at least one associative monomer being a (meth)acrylate ester of an alkoxylated alcohol; and D: from 0% to 15% by weight of one or more non-ionic ethylenically unsaturated monomers other than those defined above as A, B or C; wherein the total monomer components A+B+C+D together add up to 100%. |
| 地址 |
Wellingborough, Northamptonshire GB |
