Macromolecular compounds

C - Chemistry – Metallurgy – 08 – F

Patent

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Details

C08F 8/00 (2006.01) C08F 2/48 (2006.01) C08F 8/40 (2006.01) C08F 230/02 (2006.01) C08G 77/38 (2006.01) G02B 1/04 (2006.01)

Patent

CA 2365466

The invention relates to macromolecular photocrosslinkers having polymeric backbones of substituted ethylene or substituted siloxane groups carrying photoactive groups. The photocrosslinkers are capable of producing, when being exposed to light of determined wavelengths above 305 nm, radicals which are retained on the macromoleculecular photocrosslinkers and reacting so as to accomplish a crosslinked network structure. The invention further relates to the use of the photocrosslinkers in different systems and their utility in production of medical devices including ophthalmic lenses.

La présente invention concerne des photoréticulateurs macromoléculaires comprenant des squelettes polymères en éthylène substitué ou des groupes siloxane substitués portant des groupes photoactifs. Les photoréticulateurs sont capables de produire, lorsqu'ils sont exposés à de la lumière ayant des longueurs d'onde déterminées supérieures à 305 nm, des radicaux qui sont retenus sur les photoréticulateurs macromoléculaires et de réagir pour former ainsi une structure de réseau réticulée. Cette invention concerne également l'utilisation desdits photoréticulateurs dans différents systèmes et leur utilité dans la production de dispositifs médicaux tels que des lentilles ophtalmiques.

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