Coated and ultraviolet radiation stabilized polycarbonate article
US4404257A · kind A · utility
26Cited by
11References
19Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 13, 1981 |
| Grant date | Sep 13, 1983 |
| Priority date | — |
| Expiry date | Apr 13, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31667
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A coated polycarbonate article having improved resistance to degradation by ultraviolet radiation, abrasion and attack by chemical solvents comprising a polycarbonate resin article with its surface layers impregnated with an ultraviolet radiation absorbing compound and having deposited on said impregnated surface a coating comprised of (i) a thermoplastic acrylic polymer containing primer layer; and (ii) a top coated disposed on said primer layer containing a colloidal silica filled thermoset organopolysiloxane.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.