Crosslinked siloxane-urethane polymer contact lens
US4983702A · kind A · utility
46Cited by
16References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1988 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Sep 28, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/903
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A contact lens is described which is synthesized by reaction in a mold of a isocyanate capped poly(dialkylsiloxane) prepolymer with a poly(dialkylsiloxane) di- or polyalkanol. The clear polyurethane rubber contact lens is readily made completely wettable by a transfer-grafting process or post-treatment and has a high oxygen permeability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.