US4528311A
Expired / Lapsed
US
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Ultraviolet absorbing polymers comprising 2-hydroxy-5-acrylyloxyphenyl-2H-benzotriazoles
Assignee: Iolab Corp
•
Filing: 1983-07-11
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Granted: 1985-07-09
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Expires: 2003-07-11
Abstract
Abstract Ultraviolet light absorbing polymer compositions comprising copolymers of 2-Hydroxy-5-acrylyloxyphenyl-2H-benzotriazoles with one or more other monomers copolymerizable therewith, particularly acrylic monomers are useful in the manufacture of occular devices, particularly intraoccular lenses and contact lenses. Polymers of the disclosed benzotriazoles may be added to other organic materials to impart ultraviolet absorbing properties thereo.
Inventors
- 👤 Charles D. Beard
- 👤 Akira Yamada
- 👤 Namassivaya Doddi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:05
CPC Classifications
G; G02; G02B; G02B1/00; G02B1/04; C; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/36; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3472; C08K5/3475; G02B1/041; G02B1/043
Claims Analysis
Total Claims: 30
Claim 1
Independent Claim
58 words
A compound of the formula ##STR9## wherein X is H or halogen, R 1 is selected from the group consisting of H, CH 3 and t-alkyl of 4 to 6 carbons, R 2 is C 2 -C 10 alkylene which may be straight chain or branched, and R 3 is H or CH 3 ; and homopolymers thereof.
Claim 2
Dependent Claim
58 words
A compound of the formula ##STR9## wherein X is H or halogen, R 1 is selected from the group consisting of H, CH 3 and t-alkyl of 4 to 6 carbons, R 2 is C 2 -C 10 alkylene which may be straight chain or branched, and R 3 is H or CH 3 ; and homopolymers thereof.
Claim 3
Dependent Claim
9 words
The compound of claim 1 wherein X is chlorine.
Claim 4
Dependent Claim
12 words
The compound of claim 1 wherein R 3 is CH 3 .
Claim 5
Dependent Claim
6 words
The compound 2-(2'-Hydroxy-5'-methacryloxyethylphenyl)-2H-benzotriazole and homopolymers thereof.
Claim 6
Dependent Claim
6 words
The compound 2-(2'-Hydroxy-5'-methacryloxyethylphenyl)-2H-benzotriazole and homopolymers thereof.
Claim 7
Dependent Claim
6 words
The compound 2-(2'-Hydroxy-5'-methacrylyloxyethylphenyl)-5-chloro-2H-benzotriazole and homopolymers thereof.
Claim 8
Dependent Claim
6 words
The compound 2-(2'-Hydroxy-5'-methacrylyloxyethylphenyl)-5-chloro-2H-benzotriazole and homopolymers thereof.
Claim 9
Dependent Claim
6 words
The compound 2-(2'-Hydroxy-5'-methacrylyloxypropylphenyl)-2H-benzotriazole and homopolymers thereof.
Claim 10
Dependent Claim
6 words
The compound 2-(2'-Hydroxy-5'-methacrylyloxypropylphenyl)-2H-benzotriazole and homopolymers thereof.
Claim 11
Dependent Claim
6 words
The compound 2-(2'-Hydroxy-5'-methacrylyloxypropylphenyl)-5-chloro-2H-benzotriazole and homopolymers thereof.
Claim 12
Dependent Claim
6 words
The compound 2-(2'-Hydroxy-5'-methacrylyloxypropylphenyl)-5-chloro-2H-benzotriazole and homopolymers thereof.
Claim 13
Dependent Claim
6 words
The compound 2-(2'-Hydroxy-5'-methacrylyloxypropyl-3'-tert-butylphenyl)-2H-benzotriazole and homopolymers thereof.
Claim 14
Dependent Claim
6 words
The compound 2-(2'-Hydroxy-5'-methacrylyloxypropyl-3'-tert-butylphenyl)-2H-benzotriazole and homopolymers thereof.
Claim 15
Dependent Claim
6 words
The compound 2-(2'-Hydroxy-5'-methacrylyloxypropyl-3'-tert-butylphenyl)-5-chloro-2H-benzotriazole and homopolymers thereof.
Claim 16
Dependent Claim
6 words
The compound 2-(2'-Hydroxy-5'-methacrylyloxypropyl-3'-tert-butylphenyl)-5-chloro-2H-benzotriazole and homopolymers thereof.
Claim 17
Dependent Claim
22 words
An ultraviolet absorbing composition comprising a copolymer of an ethylenically unsaturated monomer and an effective amount of a compound of claim 1.
Claim 18
Dependent Claim
34 words
The composition of claim 10 wherein said ethylenically unsaturated material is selected from the group consisting of styrene, methylstyrene, acrylates, methylacrylates, acrylamide, acrylonitrile, methacrylonitrile, vinylacetate, vinylidene chloride, vinyl chloride, ethylene, propylene, and mixtures thereof.
Claim 19
Dependent Claim
24 words
The composition of claim 10 wherein said compound of claim 1 is 2-(2'-Hydroxy-5'-methacrylyloxypropyl-3'-tertbutylphenyl)-5-chloro-2H-benzotriazole and comprises from 0.05 to 20% by weight of said composition.
Claim 20
Dependent Claim
27 words
The composition of claim 12 wherein said UV absorbing composition comprises a copolymer of methyl methacrylate and from 0.05 to 5.0% by weight of said compound 2-(2'-Hydroxy-5'-methacrylyloxypropyl-3'-tertbutylphenyl)-5-chloro-2H-benzotriazole.
Claim 21
Dependent Claim
26 words
A composition comprising an organic polymer and as an ultraviolet absorbing additive thereto, from 0.05 to 20 percent by weight of a compound of claim 1.
Claim 22
Dependent Claim
27 words
The composition of claim 14 wherein said polymeric material is selected from the group consisting of polyvinyl halides, polyacrylates, polystyrene, polyvinylidene halides, polycarbonates and acrylonitrile-butadiene styrene terpolymers.
Claim 23
Dependent Claim
17 words
The composition of claim 15 wherein said compound of claim 1 is a homopolymer of compound 2-(2'-Hydroxy-5'-methacrylyloxypropyl-3'-tert-butylphenyl)-5-chloro-2H-benzotriazole.
Claim 24
Dependent Claim
23 words
The composition of claim 16 wherein said homopolymer of compound 2-(2'-Hydroxy-5'-methacrylyloxypropyl-3'-tert-butylphenyl)-5-chloro-2H-benzotriazole is present in an amount of from 0.05 to 5% by weight.
Claim 25
Dependent Claim
12 words
A contact lens comprising an optically clear polymer composition of claim 10.
Claim 26
Dependent Claim
12 words
A contact lens comprising an optically clear polymer composition of claim 13.
Claim 27
Dependent Claim
12 words
An intraoccular lens comprising an optically clear polymer composition of claim 10.
Claim 28
Dependent Claim
12 words
An intraoccular lens comprising an optically clear polymer composition of claim 13.
Claim 29
Dependent Claim
9 words
A plastic film comprising the composition of claim 10.
Claim 30
Dependent Claim
9 words
A plastic film comprising the composition of claim 14.
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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) | 1988-07-08 | 1989-01-07 | 1989-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-08 | 1993-01-07 | 1993-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-08 | 1997-01-07 | 1997-07-09 | $7700.00 | Window Closed / Lapsed |