Latex based open-time extenders for low VOC paints
US8034871B2 · kind B2 · utility
4Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 5, 2008 |
| Grant date | Oct 11, 2011 |
| Priority date | — |
| Expiry date | Feb 15, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L25/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to paint extenders or open-time extenders, which are mixed with an architectural coating, such as aqueous latex paints, to increase the coating's open time. The open-time extender comprises acrylic or vinyl latex particles having a mean diameter of less than about 150 nm, and at least one crosslinkable monomer that can crosslink the latex particles in the open-time extender to the latex particles in the architectural coating at ambient conditions. The open-time extender also comprises water and the total solid content of the open-time extender is less than about 15% by weight.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.