Crosslinked hydrogels derived from hydrophilic polymer backbones
US5210111A · kind A · utility
41Cited by
20References
1Claims
0Family size
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Key dates
| Filing date | Aug 22, 1991 |
| Grant date | May 11, 1993 |
| Priority date | — |
| Expiry date | Aug 22, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F290/08
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The crosslinked polymerization product of the reaction product of a polymeric backbone containing pendant hydroxyl groups with an unsaturated monoisocyanate or of said reaction product with an ethylenically unsaturated monomer gives a hydrogel material suitable for making contact lenses.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.