Ultraviolet radiation stabilized polymer compositions
US4636408A · kind A · utility
33Cited by
9References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1985 |
| Grant date | Jan 13, 1987 |
| Priority date | — |
| Expiry date | Jul 22, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/8305
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process and composition for improving the ultraviolet radiation stability of articles made from resins subject to photo degradation by contacting the article at a selected temperature with a stabilizer composition comprising an ultraviolet radiation absorber and a hindered amine light stabilizer in a nonagressive liquid carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.