WO1995021889B1 - Reinforced compositions and lens bodies made from same - Google Patents

Reinforced compositions and lens bodies made from same

Info

Publication number
WO1995021889B1
WO1995021889B1 PCT/US1995/001636 US9501636W WO9521889B1 WO 1995021889 B1 WO1995021889 B1 WO 1995021889B1 US 9501636 W US9501636 W US 9501636W WO 9521889 B1 WO9521889 B1 WO 9521889B1
Authority
WO
WIPO (PCT)
Prior art keywords
composition
radicals
cross
refraction
index
Prior art date
Application number
PCT/US1995/001636
Other languages
French (fr)
Other versions
WO1995021889A1 (en
Filing date
Publication date
Priority claimed from US08/193,966 external-priority patent/US5512609A/en
Application filed filed Critical
Priority to AU19138/95A priority Critical patent/AU1913895A/en
Priority to JP7521320A priority patent/JPH09508665A/en
Priority to EP95911645A priority patent/EP0743967A1/en
Publication of WO1995021889A1 publication Critical patent/WO1995021889A1/en
Publication of WO1995021889B1 publication Critical patent/WO1995021889B1/en

Links

Abstract

Compositions, preferably elastomeric compositions, comprise high refractive index polysiloxane-based cross-linked copolymers and high refractive index polymeric resin components. Such compositions, which have refractive indexes of at least about 1.46, preferably at least about 1.48, are useful in producing foldable intraocular lenses.

Claims

-. 8AMENDED CLAIMS[received by the International Bureau on 21 August 1995 (21.08.95); original claims 1, 12 and 17 amended; original claim 10 canceled; remaining claims unchanged (5 pages)]
1. A composition comprising: a major amount by weight of a cross-linked copolymer component derived from monomers comprising (1) at least one polysiloxane including aryl-containing substituents and (2) at least one cross-linker component selected from the group consisting of polyorganohydrosiloxanes and mixtures thereof; and a polymeric resin component selected from the group consisting of silicon-based resins including organic groups and mixtures thereof in an amount effective to increase the strength of said composition relative to an identical composition without said polymeric resin component, said composition being elastomeric and optically clear, said cross-linked copolymer component and said polymeric resin component each having an index of refraction of at least about 1.46.
2. The composition of claim 1 wherein the index of refraction of said polymeric resin component is within about 0.015 of the index of refraction of said cross-linked copolymer component.
3. The composition of claim 1 wherein the index of refraction of said polymeric resin component is greater than 1.46 and is substantially equal to the index of refraction of said cross-linked copolymer component.
4. The composition of claim 1 wherein the index of refraction of each of said cross-linked polymer component and said polymeric resin component is at least about 1.48.
The composition of claim 1 wherein the index of refraction of each of said cross-linked polymer component and said polymeric resin component is at least about 1.50.
6. The composition of claim 1 wherein said polymeric resin component is derived from a material selected from the group consisting of resinous organopolysiloxane copolymers which comprise (Rc)3SiO05 units and Si02 units, resinous organopolysiloxane copolymers which comprise (Rd)3SiO05 units, (Rd)2SiO units and Si02 units and mixtures thereof, wherein Rc and Rd are independently selected from the group consisting of vinyl radicals and monovalent hydrocarbon radicals free of aliphatic unsaturation.
7. The composition of claim 6 wherein about 1.5 mol% to about 10 mole % of the silicon atoms included in said material contain silicon-bonded vinyl groups.
8. The composition of claim 6 wherein each of the Rc groups and Rd groups which is not vinyl is independently selected from the group consisting of alkyl radicals, aryl radicals, cycloalkyl radicals, aralkyl radicals and substituted counterparts thereof.
9. The composition of claim 6 wherein at least a portion of the Rc groups and the Rd groups which are not vinyl are benzyl radicals.
10. Canceled.
11. The composition of claim 1 wherein said at least one polysiloxane has the formula
R3
Figure imgf000004_0001
wherein each R and R4 is independently selected from the group consisting of alkyl radicals, aryl radicals, cycloalkyl radicals, aralkyl radicals and substituted counterparts thereof; each R3 is independently selected from the group consisting of monovalent hydrocarbon radicals having a multiple bond and substituted counterparts thereof; n is an integer in the range of about 6 to about 500; and m is an integer in the range of 0 to about 500.
12. The composition of claim 11 wherein each R is independently selected from the group consisting of alkyl radicals and each R4 is independently selected from the group consisting of alkyl radicals, aryl radicals and aralkyl radicals.
13. The composition of claim 12 wherein when one R4 is an aryl-containing radical, the other R4 bonded to the same silicon atom is an alkyl radical.
14. A lens body for use in or on a mammalian eye comprising the composition of claim 1.
15. A lens body for use in or on a mammalian eye comprising the composition of claim 4.
16. A lens body for use in or on a mammalian eye comprising the composition of claim 5.
17. A composition comprising: a major amount by weight of a cross-linked copolymer component derived from monomers comprising (1) at least one polysiloxane having the formula
Figure imgf000005_0001
3 1
wherein each R and R4 is independently selected from alkyl radicals, aryl radicals, cycloalkyl radicals, aralkyl radicals and substituted counterparts thereof, provided that at least one R4 is an aryl-containing radical, each R3 is independently selected from monovalent hydrocarbon radicals having a multiple bond and substituted counterparts thereof, n is an integer in the range of about 6 to about 500 or about 1000, and m is an integer in the range of 0 to about 500 or about 1000, and (2) a cross-linker component selected from the group consisting of polyorganohydrosiloxanes and mixtures thereof,* and a polymeric resin component selected from the group consisting of silicon-based resins including organic groups and mixtures thereof in an amount effective to increase the strength of said composition relative to an identical composition without said polymeric resin component, said cross-linked copolymer component having an index of refraction of at least about 1.46, the index of refraction of said polymeric resin component being within about 0.015 of the index of refraction of said cross-linked copolymer component, said composition being elastomeric and optically clear.
18. The composition of claim 17 wherein said cross-linked copolymer component has an index of refraction of at least about 1.48.
19. The composition of claim 17 wherein said cross-linked copolymer component has an index of refraction of at least about 1.50.
20. The composition of claim 17 wherein said polymeric resin component is derived from a resinous organopolysiloxane copolymer including (Rc)3SiO05 units and Si02 units, wherein Rc is selected from the group consisting of vinyl radicals and monovalent hydrocarbon 32
radicals free of aliphatic unstaturation.
21. A lens body for use in or on a mammalian eye comprising the composition of claim 17.
22. A lens body for use in or on a mammalian eye comprising the composition of claim 19.
PCT/US1995/001636 1994-02-09 1995-02-07 Reinforced compositions and lens bodies made from same WO1995021889A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU19138/95A AU1913895A (en) 1994-02-09 1995-02-07 Reinforced compositions and lens bodies made from same
JP7521320A JPH09508665A (en) 1994-02-09 1995-02-07 Reinforcing composition and lens body prepared therefrom
EP95911645A EP0743967A1 (en) 1994-02-09 1995-02-07 Reinforced compositions and lens bodies made from same

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/193,966 1994-02-09
US08/193,966 US5512609A (en) 1992-04-14 1994-02-09 Reinforced compositions and lens bodies made from same

Publications (2)

Publication Number Publication Date
WO1995021889A1 WO1995021889A1 (en) 1995-08-17
WO1995021889B1 true WO1995021889B1 (en) 1995-09-21

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/001636 WO1995021889A1 (en) 1994-02-09 1995-02-07 Reinforced compositions and lens bodies made from same

Country Status (5)

Country Link
US (2) US5512609A (en)
EP (1) EP0743967A1 (en)
JP (1) JPH09508665A (en)
AU (1) AU1913895A (en)
WO (1) WO1995021889A1 (en)

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