Multi-layer, weatherable compositions and method of manufacture thereof
US7090926B2 · kind B2 · utility
2Cited by
24References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 2, 2002 |
| Grant date | Aug 15, 2006 |
| Priority date | — |
| Expiry date | Oct 10, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31746
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A weatherable composition comprising an upper layer that comprises an aliphatic polyamide resin and an additive composition comprising an hindered amine light stabilizer and a hydroxyphenyl triazine or pyrimidine UV absorber; an intermediate layer that comprises a polymer system compatible with polymer in the upperlayer, and optionally, an additive composition comprising TiO2, dyes, pigments, and special effects additives; and a polymeric substrate, wherein the intermediate layer is disposed between and in intimate contact with the upper layer and the substrate. The composition finds utility in articles such as automotive parts.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.