Coating composition of an acrylic polymer, polyol and polyisocyanate crosslinking agent
US5286782A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 31, 1992 |
| Grant date | Feb 15, 1994 |
| Priority date | — |
| Expiry date | Aug 31, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/6229
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A coating composition primarily used as a clear coat of a clearcoat/color coat automotive finish; the composition has a film forming binder solids content of about 30-70% by weight contains about PA0 (A) 50-80% by weight, based on the weight of the binder, of an acrylic polymer of polymerized monomers of styrene, and two methacrylate monomers and a hydroxy alkyl methacrylate or acrylate each having 1-4 carbon atoms in the alkyl group and the polymer has a number average molecular weight of about 1,000-12,000 and a calculated Tg of at least 40.degree. C. and PA0 (B) 1-20% by weight, based on the weight of the binder, of a polyol component and PA0 (C) 10-49% by weight, based on the weight of the binder, of an organic polyisocyanate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.