Highly oxygen-permeable hydrated ocular lens
US7781536B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2005 |
| Grant date | Aug 24, 2010 |
| Priority date | — |
| Expiry date | Mar 1, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
It is an object of the present invention to provide an ocular lens superior in the wettability of the surface thereof, hydrating properties, oxygen permeability, flexibility, elasticity, transparency and shape recoverability though it has a composition using a silicone-containing monomer. The present invention relates to a highly oxygen-permeable hydrated ocular lens obtained by saponifying a copolymer prepared from a specific both-terminal (meth)acryl polydimethylsiloxane, a vinyl carboxylate, a (meth)acrylamide type monomer, a vinyl type crosslinking agent, one or both of a (meth)acrylate having a tertiary structure and a (meth)acrylate having a cyclic structure as (meth)acrylates each having a bulky structure at its side chain and a monomer copolymerizable with these compounds.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.