Two coat one bake coating method
US5585146A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1995 |
| Grant date | Dec 17, 1996 |
| Priority date | — |
| Expiry date | Mar 2, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a two coat one bake coating method in which the aqueous base coating composition and the powder clear coating composition are applied onto substrates in automobile painting processes. In accordance with the present invention, the aqueous base coat contains: (a) a vinyl polymer prepared by copolymerizing 8 to 30% by weight of an amido group containing ethylenic monomer, an acidic group containing ethylenic monomer, a hydroxyl group containing ethylenic monomer and at least one other ethylenic monomer; (b) an aqueous dispersion of hydrophilic group containing oligomers; and (c) pigment. The clear powder coating composition comprises an epoxy group containing acrylic resin, and may carry polymer microparticles on each powder particle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.