Polymer hydrogels adapted for use as soft contact lenses, and method of preparing same
US4546123A · kind A · utility
49Cited by
14References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1984 |
| Grant date | Oct 8, 1985 |
| Priority date | — |
| Expiry date | Dec 28, 2004 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/907
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The improved polymeric hydrogel suitable for use in forming soft contact lenses is described. The hydrogel is improved by means of its resistance to the formation of calcium, lipid and protein deposits thereon. This resistance is achieved by means of covalent modification of the hydrogel with a surfactant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.