WATER-CONTAINING SOFT CONTACT LENS MATERIAL AND WATER-CONTAINING SOFT CONTACT LENS THEREFROM

Title:

WATER-CONTAINING SOFT CONTACT LENS MATERIAL AND WATER-CONTAINING SOFT CONTACT LENS THEREFROM

Document Type and Number:

Japanese Patent JPH10251352

Kind Code:

A

Abstract:

To obtain the subject soft contact lens material that is excellent in transparency, flexibility, oxygen permeability and stain resistance by using a copolymer prepared from 4 kinds of specific monomers in a specific proportion.

A monomer mixture of (A) 20-40wt.% of N,N-dialkyl (meth) acrylamide as N,N-dimethylacrylamide, (B) 15-50wt.% of N-vinyllactam as N-vinylpyrrolidone, (C) 15-50wt.% of a bis(silicon-containing alkyl fumarate, preferably represented by formula I (R1-R6 are each methyl, trimethylsiloxy of formula II; m, n are each 1-3) typically bis [tris(trimethylsiloxy)silylpropyl] fumarate and (D) 5-30wt.% of a fluorine-containing monomer as 2,2,2,- trifluoroethyl (meth)acrylate is copolymerized and the resultant copolymer is used as a main component.

Inventors:

ANDO ICHIRO
KAWAGUCHI TORU
ICHINOHE SEIJI
YAMAZAKI TOSHIO

Application Number:

JP5352797A

Publication Date:

September 22, 1998

Filing Date:

March 07, 1997

Export Citation:

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Assignee:

MENICON CO LTD
SHINETSU CHEMICAL CO

International Classes:

G02C7/04; C08F226/06; C08F230/08; (IPC1-7): C08F230/08; C08F226/06; G02C7/04

Attorney, Agent or Firm:

Sota Asahina (1 person outside)

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