Clearcoat composition for primerless MVSS adhesion
US6995208B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2001 |
| Grant date | Feb 7, 2006 |
| Priority date | — |
| Expiry date | Mar 21, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L75/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides a clearcoat coating composition containing either one acrylic polymer with secondary hydroxyl functionality and carbamate functionality or two acrylic polymers, the first having secondary hydroxyl functionality and the second having carbamate functionality; a carbamate-functional or urea-functional material that is the reaction product of (1) a compound comprising a primary carbamate or primary urea group and an hydroxyl group and (2) a compound that is reactive with hydroxyl groups on a plurality of molecules of compound (1), but that is not reactive with the carbamate or urea groups on compound (1); and a crosslinking component including an aminoplast crosslinker. A windshield sealant can be applied directly to the clearcoat layer produced from the composition without the need for a special primer layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.