Polymeric ophthalmic lens prepared from unsaturated polyoxyethylene monomers
US5484863A · kind A · utility
41Cited by
7References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1993 |
| Grant date | Jan 16, 1996 |
| Priority date | — |
| Expiry date | Nov 22, 2013 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/937
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A soft hydrogel contact lens, is disclosed. The lens is derived from a crosslinked polymer comprising the reaction product of a monomer mixture comprising: (A) a monounsaturated polyoxyethylene monomer; (B) a diunsaturated polyoxyethylene monomer of relatively high molecular weight; (C) a diunsaturated polyoxyethylene monomer of relatively low molecular weight; and (D) a hydrophilic monomer selected from the group consisting of hydroxyethyl methacrylate, methacrylic acid, N,N-dimethylacryiamide, N-vinyl pyrrolidone, glycerol monomethacrylate, itaconic acid, and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.