Polysiloxane shaped article for use in biomedical applications
First Claim
1. A fillerless, hydrolytically stable, biologically inert, transparent, oxygen transporting, polymeric, shaped article for use in biomedical applications other than as contact lenses comprising a poly(organosiloxane) monomer α
- ,ω
terminally bonded through divalent hydrocarbon groups to polymerized, free radical polymerizably activated, unsaturated groups forming a homopolymer in a cross-linked network.
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Abstract
Monomeric polysiloxanes end-capped with activated unsaturated groups and polymers and copolymers thereof are disclosed herein for use as contact lenses and biomedical devices with improved properties, such as, oxygen transportability, hydrolytic stability, biological inertness, transparency and improved strength without the use of fillers. The polymer composition comprises a poly(organosiloxane) monomer α,ω 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".
The copolymer compositions of the instant invention comprise the polymerization product of the polysiloxane monomers and monomer or monomers containing an activated vinyl group. These polymers are employed to make biomedical devices and optical products, e.g. contact lenses, intraocular implants, etc.
277 Citations
22 Claims
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1. A fillerless, hydrolytically stable, biologically inert, transparent, oxygen transporting, polymeric, shaped article for use in biomedical applications other than as contact lenses comprising a poly(organosiloxane) monomer α
- ,ω
terminally bonded through divalent hydrocarbon groups to polymerized, free radical polymerizably activated, unsaturated groups forming a homopolymer in a cross-linked network. - View Dependent Claims (2, 3, 4, 5, 6)
- ,ω
-
7. A fillerless, hydrolytically stable, biologically inert, transparent, oxygen transporting, polymeric shaped article for use in biomedical applications other than as contact lenses comprising a poly(organosiloxane) monomer α
- ,ω
terminally bonded through divalent hydrocarbon groups to polymerized, free radical polymerizably activated, unsaturated groups copolymerized with one or more monomers selected from the group consisting of a lower ester of acrylic and methacrylic acid, styryls, and N-vinyl pyrrolidinone forming a copolymer in a cross-linked network. - View Dependent Claims (8, 9)
- ,ω
-
10. A fillerless, flexible, hydrolytically stable, biologically inert, transparent, resilient, soft, oxygen transporting, polymeric, shaped article for use in biomedical applications other than as contact lenses comprising a poly (organosiloxane) monomer α
- ,ω
terminally bonded throgh divalent hydrocarbon groups to polymerized, free radical polymerizably activated, unsaturated groups forming a homopolymer in a crosslinked network. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
- ,ω
-
20. A fillerless, flexible, hydrolytically stable, biologically inert, transparent, resilient, soft, oxygen transporting, polymeric, shaped article for use in biomedical applications other than as contact lenses comprising a poly (organosiloxane) monomer α
- ,ω
terminally bonded through divalent hydrocarbon groups to polymerized, free radical polymerizably activated, unsaturated grops copolymerized with one or more monomers selected from the group consisting of a lower ester of acrylic and methacrylic acid, styryls, and N-vinyl pyrrolidone forming a copolymer in a crosslinked network. - View Dependent Claims (21, 22)
- ,ω
Specification