Title:
【発明の名称】新規なシリコーン含有ポリマー及び酸素透過性コンタクトレンズ
Document Type and Number:
Japanese Patent JPH05506687
Kind Code:
A
Abstract:
The present invention relates to novel copolymers and contact lenses made from these copolymers comprising preformed silicon-containing acrylic star polymers and macromonomers, preparation of these contact lenses and a therapeutic method for treating patients with visual impairment. Described is a copolymer comprising at least about 10% by weight of a preformed silicone-containing acrylic copolymer and no more than about 90% by weight of a matrix formed from the random polymerization of a mixture of monomers. The mixture of monomers comprises at least one monomer selected from the group consisting of silicone acrylates, esters of alpha, beta-unsaturated acids and wetting monomers. The preformed silicone-containing acrylic copolymer is preferably copolymerized throughout the matrix. The copolymer is readily machined into gas permeable contact lenses exhibiting substantially enhanced characteristics of at least one of the characteristic group of oxygen permeability, hardness and machineability relative to contact lenses formed from the random polymerization of monomers.
Inventors:
Sedner, Leonard
Spinelli, Harry Jay
Ali, Mohamed Ismail
Waintroub, Leicester
Spinelli, Harry Jay
Ali, Mohamed Ismail
Waintroub, Leicester
Application Number:
JP50802791A
Publication Date:
September 30, 1993
Filing Date:
April 09, 1991
Export Citation:
Assignee:
Permeable Technologies, Inc.
International Classes:
C08F20/10; C08F22/36; C08F26/10; C08F30/08; C08F222/40; C08F226/10; C08F230/08; C08F220/28; C08F290/00; C08F290/04; C08F299/08; C08L43/00; C08L43/04; G02C7/04; (IPC1-7): C08L43/04; C08F220/28; C08F222/40; C08F226/10; C08F230/08; C08F299/08; G02C7/04
Attorney, Agent or Firm:
Yuzo Yamazaki (2 outside)