Title:
【発明の名称】改善された気体透過コンタクトレンズを作るための組成
Document Type and Number:
Japanese Patent JPH075686
Kind Code:
B2
Abstract:
A novel composition suitable for use in a corneal contact lens comprising the reaction product of: a) between about 20 and about 60 % by weight of polymerizable silicate having general formula (I), wherein R = alkyl, aryl or H; R' = R or OR; Y = alkyl, vinyl, aryl or fluoroalkyl; Z = (II); A = Y, or H; B = oxyalkyl, oxyaryl, oxyfluoroalkyl, oxyalkylacrylate, alkyl esters, aryl esters, fluoroalkylesters, or acrylic esters; b) from about 0 to about 9 % of a polymerizable substituted or unsubstituted lower alkyl ester siloxane, including those having alkyl, aryl, or cycloalkyl substituents forming parts of the siloxane groups; c) from about 5 % to about 50 % of a polymerizable substituted or unsubstituted lower alkyl or cycloalkyl acrylic ester; d) at least 5 % of a polymerizable fluoroacrylic ester; e) a wetting agent material which includes a mixture of acrylic or methacrylic acid and N-(1,1-dimethyl-3-oxobutyl)-acrylamide; f) at least one catalyst and sufficient crosslinking agents to provide a durable, machinable, oxygen permeable composition capable of being used in a corneal contact lens.
Inventors:
TSUETAKI JOOJI EFU
ONO HIDEHIKO
ONO HIDEHIKO
Application Number:
JP50048389A
Publication Date:
January 25, 1995
Filing Date:
August 22, 1988
Export Citation:
Assignee:
FUYUUZUDO KONTAKUTSU OBU SHIKAGO INC
International Classes:
G02C7/04; C08F18/20; C08F20/10; C08F20/22; C08F20/52; C08F30/08; C08F220/04; C08F220/18; C08F220/22; C08F220/58; C08F230/02; C08F230/08; G02B1/04; (IPC1-7): C08F230/08; C08F220/04; C08F220/18; C08F220/22; C08F220/58; G02C7/04
Domestic Patent References:
| JPS61255671A | 1986-11-13 | |||
| JPS5753110A | 1982-03-30 | |||
| JPS6046648A | 1985-03-13 | |||
| JPS6132025A | 1986-02-14 |
Foreign References:
| US4312364A | 1982-01-26 |
Attorney, Agent or Firm:
Fukushima Mitsuo