POLYMER COMPOSITION CONTAINING AT LEAST ONE TYPE OF VOLUME EXCLUSION POLYMER

• Main Authors: NASSO MURIEL, BENNING BEVERLEY, MOLOCK JR FRANK F, TIGHE BRIAN J
• Format: Patent
• Language: English
• Published: 11.09.2008
• Subjects: ADHESIVES; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; CONTACT LENSES; DYES; GENERAL PROCESSES OF COMPOUNDING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS; OPTICS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PHYSICS; POLISHES; SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURESAS SPECTACLES; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

PROBLEM TO BE SOLVED: To provide a silicone hydrogel contact lens that can prevent the development of mucin ball which may occur to some contact lens wearers by a shearing force between the palpebra and the material, while the silicone hydrogel contact lens, which can supply a greater amount of oxygen to an eye ball than the conventional lenses, has an inherent problem of lacking wettability and therefore coatings and wetting agents have been applied to improve its wettability. SOLUTION: The present invention relates to a composition containing a polymer base containing at least one type of volume exclusion polymer. In one embodiment, the present invention provides a polymer product that can be used as an osmotic pressure driver. The product can maintain a desired water balance by transferring moisture into/out of the base and keep the equilibrium of positive ion concentration between the base and its surroundings. COPYRIGHT: (C)2008,JPO&INPIT