Aqueous coating compositions with de minimis volatile emissions
US8507579B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2009 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Jan 10, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D133/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to an aqueous coating composition comprising a treated latex polymer dispersion with less than about 50 ppm of unreacted monomers. The latex polymer dispersion can be treated by various means, including stripping and chasing, to remove unreacted monomers from the dispersion. Unreacted monomers significantly contribute to paint odor. In an innovative aspect of the present invention, the synergistic combination of the treated latex dispersion with pigments and other low or zero-VOC additives results in an aqueous coating composition with de minimis levels of volatile emissions, low odor, and paint performance comparable to premium latex paints.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.