Title:
BIS(SILOXANYLALKYL)FUMARATE AND PRODUCTION THEREOF
Document Type and Number:
Japanese Patent JPS6239589
Kind Code:
A
Abstract:
NEW MATERIAL:A compound expressed by formula I (R1WR3 represent methyl, trimethylsiloxy or pentamethyldisiloxanyloxy; n is 2 or 3).
EXAMPLE: Bis[Tris(trimethylsiloxy)silylpropyl]fumarate.
USE: A monomer producing a polymer with high oxygen permeability used for such as a contact lens for a long term-continuous wearing.
PREPARATION: A silane compound expressed by formula II [example; tris(trimethylsiloxy)silane, etc.] is reacted with an unsaturated ester of fumaric acid (example; diallyl fumarate, etc.)in the presence of a catalyst.
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Inventors:
KUBOTA SATOSHI
MOGAMI TAKAO
MOGAMI TAKAO
Application Number:
JP17811985A
Publication Date:
February 20, 1987
Filing Date:
August 13, 1985
Export Citation:
Assignee:
SEIKO EPSON CORP
International Classes:
C07F7/08; C08F30/00; C08F30/08; G02C7/04; (IPC1-7): C07F7/08; C08F30/08; G02C7/04
Attorney, Agent or Firm:
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