Patent ID: 6096138
Filing Date: 2000-08-01
Classification: A61L,C11D,Y10S

Abstract:
A method of inhibiting proteinaceous deposits and other debris on a soft hydrophilic contact lens comprising:(a) treating the contact lens with an aqueous solution comprising between 0.01 and 5.0 percent by weight of at least one polyquaternium polymer having a weight average molecular weight of 5,000 to 5,000,000, the polymer comprising quaternary-amine-functional repeat units and the polymer including a copolymer in which the quaternary-amine-functional repeat units are derived from at least one first comonomer selected from the group consisting of: N,N-dimethyl-N-ethyl-aminoethyl acrylate and methacrylate, 2-methacryloxyethyltrimethylammonium, N-(3-methacrylamidopropyl)-N,N,N-trimethylammonium, 1-vinyl and 3-methyl-1-vinylimidazole, N-(3-acrylamido-3-methylbutyl)-N,N,N-trimethylammonium, N-(3-methacryloyloxy-2-hydroxypropyl)-N,N,N-trimethylammonium, diallyldimethylammonium, diallyldiethylammonium, vinylbenzyltrimethylammonium, their halides or other salt forms, and derivatives thereof involving the substitution, addition, or removal of alkyl groups having 1 to 6 carbon atoms, and said at least one first comonomer is copolymerized with at least one comonomer selected from the group consisting of vinylpyrrolidone, acrylic acid, alkyl methacryate, acrylamide, and N,N-dialkylaminoalkyl acrylate and methacrylate, said polymer having 10 to 45 mole percent of net quaternary-amine functional repeat units, and(b) directly installing the treated contact lens in the eyes of the wearer.