Balanced charge polymer and hydrophilic contact lens manufactured therefrom

• Main Authors: BAO, QI-BIN, CHEN, PATRICK, SULC, JIRI, KRCOVA, ZUZANA
• Format: Patent
• Language: English; French; German
• Published: 01.10.1997
• Edition: 6
• 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

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...