Abrasion resistant silicone coated polycarbonate article
US4239798A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1978 |
| Grant date | Dec 16, 1980 |
| Priority date | — |
| Expiry date | Nov 1, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31928
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process, and the article produced thereby, for providing a uniformly and tenaciously adhered abrasion resistant and chemical resistant non-opaque coating on polycarbonate articles. The process comprises priming the surface of the polycarbonate article with an adhesion promoting thermoplastic acrylic polymer by forming a thin film of said thermoplastic acrylic polymer on the surface of the polycarbonate article, applying a silica filled organopolysiloxane coating composition onto the primed polycarbonate article, and thereafter curing the silica filled organopolysiloxane to form a hard, abrasion and chemical solvent resistant top coat which is tenaciously adhered to the polycarbonate article. The non-opaque coated polycarbonate article produced by this process comprises a polycarbonate substrate having (i) a primer layer comprised of a thermoplastic acrylic polymer, and (ii) a thermoset silica filled organopolysiloxane top coat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.