Fumaric acid derivates and ophtalmic lenses using the same

(19)

(11)

EP 1 930 338 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	20.08.2008 Bulletin 2008/34

(43)	Date of publication:
	11.06.2008 Bulletin 2008/24

(21)	Application number: 07012218.9

(22)	Date of filing: 21.06.2007

(51)

International Patent Classification (IPC):

C07F 7/08^(2006.01)
G02C 7/04^(2006.01)

C08G 77/04^(2006.01)

(84)	Designated Contracting States:
	AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
	Designated Extension States:
	AL BA HR MK RS

(30)

Priority:

01.12.2006 JP 2006357020

(71)	Applicant: e-brain Corporation Ltd.
	11-33, Noritakeshinmachi 2-chome Nishi-ku Nagoya-shi Aichi-ken 451-0051 (JP)

(72)	Inventors:
	Takahito, Itoh c/o Mie University Faculty of Engineering Mie-ken, 514-8507 (JP) Takahiro, Uno c/o Mie University Faculty of Engineering Mie-ken, 514-8507 (JP) Masato, Ohnishi c/o Mie University Faculty of Engineering Mie-ken, 514-8507 (JP) Yasuyuki, Kato c/o e-brain Corporation Ltd. Aichi-ken, 451-0051 (JP) Takashi, Otsu c/o e-brain Corporation Ltd. Aichi-ken, 451-0051 (JP)

(74)	Representative: Hiltl, Elmar et al
	Diehl & Partner Augustenstrasse 46 80333 München 80333 München (DE)

(54)	Fumaric acid derivates and ophtalmic lenses using the same

(57) The present invention relates to fumaric acid derivatives and ophthalmic lenses using them. More specifically, the present invention relates to a fumaric acid derivative having a hydrophilic group and a silicon-containing alkyl group within a molecule, and to contact lenses or intraocular lenses.
The fumaric acid derivatives of the present invention provide, on one hand, superior oxygen permeability by having a silicon-containing alkyl group within the molecular structure, and on the other hand, improved compatibility with other hydrophilic monomers by having a hydrophilic group within the same molecule. When ophthalmic lenses obtained by polymerizing monomer compositions containing the fumaric acid derivative are constructed as, for example, water content lenses, lenses with high oxygen permeability independent from the water content may be obtained, wherein the fumaric acid derivatives is superior in compatibility with the hydrophilic monomer used in combination and allows the combination in various mixing ratios.