Odor free, air dry, decorative latex paints
US5470906A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1993 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Dec 27, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D175/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous ambient dry paint coating based on an emulsion copolymerized addition polymer containing an oligomer selected from a polyurethane or a polyester having a Tg below -20.degree. C. and a number average molecular weight between 300 and 5,000, where the coating is free of organic coalescing solvents. The matrix addition polymer is combined with an oligomer produced by forming an aqueous micro-preemulsion of oligomer in water by high shear mixing of oligomer and water containing 40% to 70% by weight oligomer and at temperatures between about 20.degree. C. and 100.degree. C. to provide an aqueous pre-emulsion having an organic phase droplet size less than 10 microns.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.