Silane ester contact lens composition, article and method of manufacture
US4535138A · kind A · utility
6Cited by
4References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 1, 1982 |
| Grant date | Aug 13, 1985 |
| Priority date | — |
| Expiry date | Nov 1, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F230/085
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A copolymer composition, especially adapted for use in fabricating a contact lens comprises a copolymer of comonomers which include about 1-95 parts by weight of hydroxy silane esters of acrylic or methacrylic acid having a silanol functionality of 10-20% and about 99-5 parts by weight of a C.sub.1 -C.sub.20 alkyl ester of acrylic or methacrylic acid. Contact lenses and contact lens buttons are formed of such copolymer by conventional techniques and also by injection molding and by compression molding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.