Title:
MATERIAL FOR CONTACT LENS
Document Type and Number:
Japanese Patent JPS63305113
Kind Code:
A
Abstract:
PURPOSE: To make it possible to produce a material for contact lenses excellent in hydrophilic nature and surface hardness and high in permeability to oxygen, by using a copolymer of monomers containing as essential components a specific hydrophilic monomer and a silicon-containing (meth)acrylate.
CONSTITUTION: A material for contact lenses is made of a copolymer produced from monomers containing, as essential components, 5W20pts.wt. hydrophilic monomer (a) which comprises 40W60mol.% N-vinyl-2-pyrrolidone and 40W60mol.% methacrylic acid and 30W95pts.wt. at least one of a silicon- containing acrylate and a silicon-containing methacrylate (b) in 100pts.wt. total of the monomers to be polymerized.
Inventors:
NAKAJIMA TATSUTOSHI
TANIYAMA YOSHITAKA
SUGIYAMA AKITOSHI
TANIYAMA YOSHITAKA
SUGIYAMA AKITOSHI
Application Number:
JP14190987A
Publication Date:
December 13, 1988
Filing Date:
June 06, 1987
Export Citation:
Assignee:
MENICON CO LTD
International Classes:
C08F20/22; C08F26/10; C08F30/08; C08F220/04; G02C7/04; C08F220/06; C08F220/22; C08F226/10; C08F230/08; G02B1/04; (IPC1-7): C08F220/06; C08F226/10; C08F230/08; G02C7/04
Domestic Patent References:
| JP58501291Y | ||||
| JPS58132725A | 1983-08-08 | |||
| JPS5961816A | 1984-04-09 | |||
| JPS59185310A | 1984-10-20 | |||
| JPS60211419A | 1985-10-23 |
Attorney, Agent or Firm:
Sota Asahina