Graft copolymer, solution containing the graft copolymer for tre

Details Graft copolymer, solution containing the graft copolymer for tre Graft copolymer, solution containing the graft copolymer for tre

1990-12-14

1993-04-27

Seidleck, James J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525242, 525260, 525263, 525276, 525288, 525303, 525308, 525309, 525937, 523108, 351160H, 252351, C08F27102, G02C 704

Patent

active

052062988

ABSTRACT:
A graft copolymer produced by polymerizing 2-hydroxyethyl methacrylate, or monomer mixture containing the monomer, by using initiator produced by copolymerizing (A) N-vinyllactam or styrene and (B) peroxy-fumarate or combination of the peroxy-fumarate and diester of fumaric acid, the peroxy-fumarate being represented by the formula (I): ##STR1## wherein R1 is a linear alkyl, branched alkyl or cycloalkyl group containing not more than 18 carbon atoms, or an aromatic hydrocarbon group containing 6 to carbon atoms; and R2 is a linear alkyl, branched alkyl or cycloalkyl group containing not more than 13 carbon atoms, or a phenyl group.
A solution for treating a contact lens, including the above graft copolymer and a solvent dissolving the copolymer. A method of treating a contact lens, comprising the step of wetting a surface of the contact lens with the above solution, and the step of contacting the wetted surface with a poor solvent, thereby modifying the hydrophobic contact lens surface into a hydrophilic surface.

REFERENCES:
patent: 4205144 (1980-05-01), Naarmann et al.
patent: 4753990 (1988-06-01), Moriya et al.
patent: 4791175 (1988-12-01), Janssen
patent: 5082912 (1992-01-01), Kawaguchi

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