Title:
OCULAR LENS MATERIAL
Document Type and Number:
Japanese Patent JP3167229
Kind Code:
B2
Abstract:
PURPOSE: To obtain an ocular lens material having high oxygen permeability and mechanical strength, also excellent in resistance to contamination, suitable for contact lens, etc., consisting of a copolymer of each specific fluorodi(meth) acrylate and silicon-contg. di(meth)acrylate.
CONSTITUTION: This ocular lens material consists of a copolymer produced by copolymerization between (A) a fluorodi(meth)acrylate having urethane linkage of formula I (R1 and R2 are each H or methyl; R3 and R4 are each a 5-15C alkylene; R5 is a 1-20C alkylene containing 1-20 F atoms; (m) and (n) are each 1-5; (x) and (y) are each 0 or 1), (B) a silicon-contg. di(meth)acrylate having urethane linkage of formula II [R6 and R7 are each H or methyl; R8 and R9 are each a 1-10C alkylene or a 2-10C ether; R10 is a siloxane skeleton of formula III ((r) is 1-50); (p) and (g) are each 1-5] and (C) a monomer having unsaturated double bond copolymerizable with the components A and B.
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Inventors:
Yasuhiro Yokoyama
Yuriko Watanabe
Akinori Okumura
Shoji Ichinohe
Toshio Yamazaki
Yuriko Watanabe
Akinori Okumura
Shoji Ichinohe
Toshio Yamazaki
Application Number:
JP23996793A
Publication Date:
May 21, 2001
Filing Date:
September 27, 1993
Export Citation:
Assignee:
Menicon Co., Ltd.
Shin-Etsu Chemical Co., Ltd.
Shin-Etsu Chemical Co., Ltd.
International Classes:
G02C7/04; A61L27/00; C08F20/34; C08F30/08; C08F220/36; C08F220/54; C08F226/06; C08F230/08; C08F290/00; C08F290/06; G02B1/04; (IPC1-7): C08F220/36; A61L27/00; C08F230/08; C08F290/06; G02C7/04
Domestic Patent References:
| JP4130109A | ||||
| JP55861A |
Attorney, Agent or Firm:
Sota Asahina (1 person outside)