Contact lens material
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 10, 1988
Grant Date -
N/A
app pub date -
Jul 22, 1986
filing date -
Sep 3, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The invention relates to novel multifunctional organosiloxane monomers which can be represented by the general formulas: ##STR1## wherein, at least one of 'X.sup.1 '-'X.sup.7 ' is a group of the following structure: ##STR2## and its copolymerization with monofunctional organosiloxane monomers which can be represented by the general formulas: ##STR3## and alkyl and/or cyclic alkyl esters of acrylic, methacrylic acids and/or itaconate esters, and in some cases fluoroalkyl esters of acrylic, methacrylic acids and/or fluoroalkyl itaconate esters to produce excellent oxygen permeable hard contact lens material. Preferably, the copolymer includes cross-linking agents and wetting agents. Contact lenses manufactured from the materials can be easily machined and polished into hard contact lenses having solvent-resistance and sufficient permeabilities.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully