Polysiloxane shaped article for use in biomedical applications

Details Polysiloxane shaped article for use in biomedical applications Polysiloxane shaped article for use in biomedical applications

C - Chemistry, Metallurgy

08

G

167/328, 402/9

C08G 77/20 (2006.01) C08F 283/12 (2006.01) C08L 83/14 (2006.01) G02B 1/04 (2006.01)

Patent

CA 1107433

POLYSILOXANE SHAPED ARTICLE FOR USE IN BIOMEDICAL APPLICATIONS ABSTRACT OF THE DISCLOSURE Monomeric polysiloxanes end-capped with activated usaturated groups and polymers and copolymers thereof are disclosed herein for use as contact lenses and biomedical devices with improved properties, such as, oxygen transpor- tability, hydrolytic stability, biological inertness, trans- parency and improved strength without the use of fillers. The polymer composition comprises a poly(organosiloxane) monomer .alpha.,.omega. terminally bonded through divalent hydrocarbon groups to polymerized free radical polymerizably activated unsaturated groups. Contact lenses and biomedical devices i.e. shaped article for use in biomedical applications made therefrom can be "hard" or "soft". This hardness or softness is a function of the comonomer or the molecular weight of the monomers. Preferably the contact lenses and biomedical devices are "soft".

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