Process for producing odor free, air dry, decorative latex paints
US5422392A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1993 |
| Grant date | Jun 6, 1995 |
| Priority date | — |
| Expiry date | Dec 16, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
An aqueous ambient dry paint coating based on an addition copolymer matrix 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 200 and 20,000, where the coating is free of organic coalescing solvents. The matrix polymer comprises emulsion copolymerized ethylenic monomers, preferably vinyl acetate monomer, and is produced by mixing the oligomer with the ethylenic monomers to form an organic mixture of monomer and oligomer, providing an aqueous micro dispersion of the organic mixture phase droplet size less than 5 microns, and copolymerizing the monomer to produce a vinyl acetate polymer containing oligomer, where the polymeric system is free of coalescing organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.