Polymer compositions for contact lenses
US5270418A · kind A · utility
78Cited by
12References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 29, 1993 |
| Grant date | Dec 14, 1993 |
| Priority date | — |
| Expiry date | Jan 29, 2013 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Branched cycloalkyl 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.