Hard coating compositions and plastic optical articles
US5134191A · kind A · utility
62Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 12, 1990 |
| Grant date | Jul 28, 1992 |
| Priority date | — |
| Expiry date | Feb 12, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D183/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A hard coating composition comprising an epoxy group-containing organic silicon compound and inorganic submicron particles such as silica sol is curable with a minimal amount of an antimony compound as the curing catalyst. The composition is thus stable during shelf storage and can be cured to a plastic optical article as a mar resistant hard coating film.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.