Molded polymer article having a hydrophilic surface and...

Details Molded polymer article having a hydrophilic surface and... Molded polymer article having a hydrophilic surface and...

C - Chemistry, Metallurgy

08

F

C08F 216/06 (2006.01) B29C 33/40 (2006.01) B29D 11/00 (2006.01) C08J 5/00 (2006.01) G02B 1/00 (2006.01) G02C 7/02 (2006.01)

Patent

CA 2248467

A molded polymer article comprises a main molded body having on the surface thereof a hydrophilic polymer layer, the article being obtained by polymerizing both a monomer having a hydrophilic group and coated on the surface of a hydrophilic mold, and a polymerizable composition consisting essentially of a monomer and/or oligomer and placed in the mold. The hydrophilic polymer layer has excellent adhesiveness to the main body of the molded polymer article and excellent durability, so that the high hydrophilic property can be maintained, even when the article is exposed to external forces such as friction, over a long period of time. The molded articles are therefore useful as, in particular, contact lenses.

Un article en polymère moulé comprend un corps moulé principal possédant à sa surface une couche polymérique hydrophile; l'article est obtenu par polymérisation à la fois d'un monomère portant un groupe hydrophile, appliqué comme revêtement sur la surface d'un moule hydrophile, et d'une composition polymérisable constituée essentiellement d'un monomère et (ou) d'un oligomère, placée dans le moule. La couche de polymère hydrophile a une excellente adhérence au corps principal de l'article moulé en polymère et une excellente durabilité; sa grande qualité hydrophile peut donc être conservée, même lorsque l'article est exposé à des forces externes, comme le frottement, pendant une longue période de temps. Ces articles moulés sont par conséquent utiles, notamment comme verres de contact.

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