Process for producing an ultraviolet radiation stabilized polymeric article
US4323597A · kind A · utility
29Cited by
4References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 15, 1980 |
| Grant date | Apr 6, 1982 |
| Priority date | — |
| Expiry date | Sep 15, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2369/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for producing an ultraviolet radiation stabilized polymeric, particularly polycarbonate, article comprising impregnation of the surface layers of said article with an ultraviolet radiation absorber by first applying onto the surface of said article an ultraviolet radiation stabilizing composition containing an ultraviolet radiation absorber and a nonaggressive liquid carrier, and then heating the article with the stabilizing composition on its surface to a temperature sufficient for said absorber to diffuse into the surface layers of said article but insufficient to deleteriously affect the properties of the polymer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.