Polymer compositions for contact lenses
US5006622A · kind A · utility
130Cited by
10References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 1987 |
| Grant date | Apr 9, 1991 |
| Priority date | — |
| Expiry date | Apr 2, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Branched alkylhydroxycycloalkyl methacrylate monomers, such as t-butylhydroxycyclohexyl methacrylate, are polymerized with hydrophilic monomers and crosslinking agents to produce compositions for shaped biomedical devices, including soft contact lenses. Such copolymers have high oxygen permeability and good mechanical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.