Acrylic aqueous miniemulsion copolymer thickeners and latex paints containing said thickeners
US6242531A · kind A · utility
8Cited by
2References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 19, 1999 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Jan 19, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L33/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention pertains to an aqueous acrylic copolymer thickener particularly useful for thickening latex paints, the thickener copolymer comprising aqueous copolymerized ethylenically unsaturated monomers comprising between 10% and 90% carboxyl functional monomer, between 1% and 50% long alkyl ester of acrylate or methacrylate, and preferably between 20% and 90% methyl or ethyl acrylate or methacrylate. The mixture of monomers is mixed with water and surfactant, micronized to droplet size less than 5 microns, copolymerized to form a carboxyl functional copolymer, which is then neutralized with amine to form a thickener copolymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.