Copolymer dispersion for water whitening resistant coatings
US8772386B2 · kind B2 · utility
1Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 17, 2012 |
| Grant date | Jul 8, 2014 |
| Priority date | — |
| Expiry date | Jul 27, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D139/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides an aqueous copolymer dispersion comprising a copolymer and a polyamine, the copolymer comprises, as copolymerized units, at least one nonionic monomer selected from (meth)acrylate C6-C22 alkyl ester or Versatic vinyl ester; wherein the amount of the nonionic monomer ranges from 15% to less than 50% and wherein the amount of the polyamine ranges from 0.1 to 2%, by dry weight percentage based on the dry weight of the copolymer. The copolymer dispersion is suitable for use in coating compositions such as stone paints with significant improvement of water whitening resistance.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.