US4868251A
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US
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Ultraviolet light absorbing silicone compositions
Assignee: Allergan Sales LLC
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Filing: 1987-11-19
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Granted: 1989-09-19
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Expires: 2007-11-19
Abstract
Abstract An ultraviolet light absorbing silicone composition comprising silicone elastomer and, covalently bonded thereto, ultraviolet light absorbing component derived from one or more vinyl functional, polymerizable ultraviolet absorbing monomers having the following structures: ##STR1## and mixtures thereof, wherein X is selected from the group consisting of H, alkoxy radicals and halogen, R 1 is selected from the group consisting of H and alkyl radicals, provided that at least one of X and R 1 is other than H, and R 2 and R are independently selected from organic radicals with a terminal double bond.
Inventors
- 👤 Cary J. Reich
- 👤 F. Richard Christ
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 05:03
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/04; G02B1/041; G02B1/043; C; C08; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/045; C08G77/20; C08G77/22; C08G77/24; C08G77/70
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
105 words
An ultraviolet light absorbing silicone composition comprising silicone base polymer selected from the group consisting of platinum catalyzed vinyl-hydride addition cured polydiorganosiloxanes and mixtures thereof and, covalently bonded thereto, ultraviolet light absorbing component derived from one or more vinyl functional, polymerizable ultraviolet absorbing monomers having the following structure: ##STR8## and mixtures thereof, wherein X is selected from the group consisting of H, alkoxy radicals and halogen, R 1 is selected from the group consisting of H and alkyl radicals, provided that at least one of X and R 1 is other than H, and R 2 is an organic radical with a terminal double bond.
Claim 2
Dependent Claim
105 words
An ultraviolet light absorbing silicone composition comprising silicone base polymer selected from the group consisting of platinum catalyzed vinyl-hydride addition cured polydiorganosiloxanes and mixtures thereof and, covalently bonded thereto, ultraviolet light absorbing component derived from one or more vinyl functional, polymerizable ultraviolet absorbing monomers having the following structure: ##STR8## and mixtures thereof, wherein X is selected from the group consisting of H, alkoxy radicals and halogen, R 1 is selected from the group consisting of H and alkyl radicals, provided that at least one of X and R 1 is other than H, and R 2 is an organic radical with a terminal double bond.
Claim 3
Dependent Claim
17 words
The composition of claim 1 wherein R 2 is a straight chain or branched chain alkenyl group.
Claim 4
Dependent Claim
30 words
The composition of claim 1 wherein the ultraviolet absorbing component is present in an amount effective to absorb ultraviolet light in the range of about 300 to about 400 nm.
Claim 5
Dependent Claim
63 words
The composition of claim 1 wherein said silicone base polymer has the formula: ##STR9## wherein R' 1 is a methyl radical, R' 2 is selected from the group consisting of alkyl radicals, flouro alkyl radicals, alkenyl radicals with a terminal double bond, aryl radicals, substituted aryl radicals, and mixtures thereof, and n and are integers in the range of 0 to about 500.
Claim 6
Dependent Claim
24 words
The composition of claim 1 wherein said silicone base polymer is selected from the group consisting of polydimethylsiloxanes, poly(dimethyl-diphenyl) siloxanes, polyfluoroorganosiloxanes and mixtures thereof.
Claim 7
Dependent Claim
20 words
The composition of claim 1 wherein said silicone base polymer is derived from a two part, platinum catalyzed polymerization process.
Claim 8
Dependent Claim
25 words
The composition of claim 1 wherein R 2 is selected from the group consisting of a vinyl functionality, an acrylate functionality and a methacrylate functionality.
Claim 9
Dependent Claim
12 words
The composition of claim 1 wherein the ultraviolet absorbing monomer is 2-(2-hydroxy-3-t-butyl-5-vinylphenyl)-5-chloro-2H-benzotriazole.
Claim 10
Dependent Claim
23 words
The composition of claim 1 wherein the ultraviolet light absorbing component is present in an amount of less than about 1% by weight.
Claim 11
Dependent Claim
17 words
The composition of claim 1 which is defined utililizing at least one hydride functional siloxane crosslinking agent.
Claim 12
Dependent Claim
9 words
The composition of claim 1 which is optically clear.
Claim 13
Dependent Claim
18 words
A corneal contact lens, an intraocular lens or a corneal intrastromal lens comprising the composition of claim 15.
Claim 14
Dependent Claim
12 words
The composition of claim 1 wherein R 2 is a vinyl group.
Claim 15
Dependent Claim
15 words
The composition of claim 4 wherein said vinyl functional, polymerizable ultraviolet absorbing monomer is 2-(2-hydroxy-3-t-butyl-5-vinylphenyl)-5-chloro-2H-benzotriazole.
Claim 16
Dependent Claim
18 words
A corneal contact lens, an intraocular lens or a corneal intrasotromal lens comprising the composition of claim 13.
Claim 17
Dependent Claim
18 words
A corneal contact lens, an intraocular lens or a corneal intrastromal lens comprising the composition of claim 14.
Claim 18
Dependent Claim
18 words
A corneal contact lens, an intraocular lens or a corneal intrastromal lens comprising the composition of claim 1.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |