Crosslinked siloxane-urethane polymer contact lens
US5426158A · kind A · utility
97Cited by
6References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 14, 1994 |
| Grant date | Jun 20, 1995 |
| Priority date | — |
| Expiry date | Apr 14, 2014 |
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.