Light stable articles
US6613819B2 · kind B2 · utility
19Cited by
43References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 2001 |
| Grant date | Sep 2, 2003 |
| Priority date | — |
| Expiry date | Oct 5, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention provides, generally, light stable article containing at least one single or multiple layer polyester film and an effective amount of a light absorbing composition comprising one or more of an ultraviolet light absorbing compound, a hindered amine light stabilizer (HALS) composition, and a phosphonate stabilizing compound. Generally, the weight ratio of the light absorbing compound to the HALS composition is at least about 2:1. Various composite articles and constructions made utilizing the above light stable articles are also provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.