Oxygen permeable soft contact lens composition
US4525563A · kind A · utility
45Cited by
5References
2Claims
0Family size
Assignees
Inventors
Key dates
| Filing date | Mar 13, 1984 |
| Grant date | Jun 25, 1985 |
| Priority date | — |
| Expiry date | Mar 13, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A copolymer comprising, PA0 (a) a hydrophilic siloxanylalkyl ester having a structure in which a siloxane part (1) having a terminal acryloyl or methacryloyl group and a siloxane part (2) having a terminal hydrophilic group are bonded through an alkylene chain with each other, PA0 (b) a hydrophilic monomer, and PA0 (c) a hydrophobic monomer is suitable for use in the production of a soft contact lens having a high oxygen permeability and an excellent affinity for the eye tissue which can be worn continuously for a long period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.