Ocular lens materials and process for producing the same

Details Ocular lens materials and process for producing the same Ocular lens materials and process for producing the same

G - Physics

02

C

G02C 7/04 (2006.01) A61F 2/16 (2006.01) A61L 27/00 (2006.01) A61L 27/18 (2006.01) C08F 2/48 (2006.01) C08F 8/12 (2006.01) C08F 218/04 (2006.01) C08F 283/12 (2006.01) C08F 290/06 (2006.01) C08L 51/08 (2006.01) G02B 1/04 (2006.01)

Patent

CA 2372930

An ocular lens material comprising a siloxane polymer obtained by polymerizing polymerizable ingredients comprising as essential ingredients (A) a siloxane macromonomer having two or more active unsaturated groups and a number-average molecular weight of 2,000 to 100,000 and (B) the vinyl ester of a lower fatty acid; and an ocular lens material comprising a polymer which is obtained by saponifying the siloxane polymer. These lens materials not only have resistance to lipid fouling, wettability by water, and permeability to oxygen but have excellent shape recovery.

L'invention porte sur un matériau pour lentilles oculaires consistant en un polymère de siloxane obtenu par polymérisation de substances polymérisables dont les principales sont: (A) un macromonomère de siloxane à deux ou plus de deux groupes actifs insaturés et d'un poids moléculaire numérique moyen compris entre 2 000 et 100 000, et (B) un ester vinylique d'acide gras inférieur, ainsi que sur un matériau pour lentilles oculaires fait d'un polymère obtenu par saponification du polymère de siloxane. Ces matériaux pour lentilles résistent non seulement à l'encrassement par les lipides, mais sont mouillables par l'eau et perméables à l'oxygène tout en présentant une excellente reprise des formes.

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