Polysiloxane with cycloalkyl modifier composition and biomedical devices
US4327203A · kind A · utility
187Cited by
8References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 26, 1981 |
| Grant date | Apr 27, 1982 |
| Priority date | — |
| Expiry date | Feb 26, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Monomeric polysiloxanes endcapped with activated unsaturated groups are copolymerized with cycloalkyl modulus modifiers and tear film stabilizers to form hard, gas permeable, polysiloxane contact lenses and other biomedical devices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.