Contact lenses containing hydrophilic silicone polymers
US4261875A · kind A · utility
179Cited by
6References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1979 |
| Grant date | Apr 14, 1981 |
| Priority date | — |
| Expiry date | Jan 31, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G77/20
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Homopolymers and copolymers of compounds according to the formula; ##STR1## wherein R is an alkyl having 1 to 3 carbons, a+b+c+d=e, b=0 to e, c=0 to e, b+c>1, d=0 to 5, e=1 to 100, and Y is an organic group containing at least one >C=C< are hydrophilic as well as exhibiting properties similar to silicone compounds. The polymers are particularly useful in contact lenses having enhanced oxygen permeability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.