Method for preparing color-clear composite coatings having resistance to acid etching
US5989642A · kind A · utility
42Cited by
36References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 7, 1994 |
| Grant date | Nov 23, 1999 |
| Priority date | — |
| Expiry date | Oct 7, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A color-plus-clear coating system is disclosed. A pigmented or colored basecoat is first applied to a substrate followed by the application of a transparent topcoat to the basecoat. The transparent topcoat composition is a crosslinkable composition comprising (1) a material containing a plurality of carbamate and/or urea functional groups and (2) an aminoplast crosslinking agent. The topcoat composition provides a composite coating with improved acid etch resistance, making the composite coating particularly useful as an automotive topcoat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.