Balanced charge polymer and hydrophilic contact lens manufactured therefrom

A water swellable crosslinked polymer of essentially balanced charge is obtained by polymerizing a polymer-forming composition comprising a cationic-anionic pair of ethylenically unsaturated monomers and a non-ionic ethylenically unsaturated hydrophillic and/or hydrophobic monomer. Contact lenses fo...

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Bibliographic Details
Main Authors BAO, QI-BIN, CHEN, PATRICK, SULC, JIRI, KRCOVA, ZUZANA
Format Patent
LanguageEnglish
French
German
Published 01.10.1997
Edition6
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
CONTACT LENSES
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
OPTICS
ORGANIC MACROMOLECULAR COMPOUNDS
PHYSICS
SPECTACLES
SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Summary:A water swellable crosslinked polymer of essentially balanced charge is obtained by polymerizing a polymer-forming composition comprising a cationic-anionic pair of ethylenically unsaturated monomers and a non-ionic ethylenically unsaturated hydrophillic and/or hydrophobic monomer. Contact lenses formed from the polymer exhibit little if any tendency to attract soils, eg proteinaceous debris, to their surfaces.
Bibliography:Application Number: EP19960202279