Color plus clear composite coating having a catalyst-free base coat comprising polyepoxides and polyacid curing agents
US4917955A · kind A · utility
21Cited by
35References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 13, 1987 |
| Grant date | Apr 17, 1990 |
| Priority date | — |
| Expiry date | Jul 13, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31699
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
There is disclosed herein a composite coating comprising a colored base coat over which is applied a clear top coat, the improvement comprising the base coat which comprises a liquid crosslinkable composition comprising a polyepoxide and a polyacid curing agent; said composition is characterized in that it is substantially free of a cure catalyst, and the top coat comprises a cure catalyst system in an amount sufficient to cure both the base coat and the top coat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.