US4260809A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymerizable, ultraviolet light absorber 4-alkoxy-2'-acryloxy benzazines
Assignee: ISP Investments LLC
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Filing: 1980-03-20
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Granted: 1981-04-07
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Expires: 2000-03-20
Abstract
Abstract This invention relates to copolymerizable ultraviolet light absorber compounds having the formula ##STR1## where R is alkyl C 1 --C 6 , substituted alkyl C 1 --C 6 or alkoxy C 1 --C 6 ; and Y is a copolymerizable radical selcted from acryloyl C 3 --C 12 , acryloxyalkyl C 3 --C 12 , acryloxyhydroxyalkyl C 3 --C 12 , and alkylacryloxyhydroxyalkyl C 3 --C 12 .
Inventors
- 👤 Bruce A. Gruber
- 👤 Donald H. Lorenz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:49
CPC Classifications
A; A61; A61Q; A61Q17/00; A61Q17/04; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/72; A61K8/81; A61K8/8141; A61K8/8152; C; C07; C07C; C07C251/00; C07C251/72; C07C251/88; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F20/36
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
31 words
Copolymerizable ultraviolet light absorber compounds having the formula: ##STR9## where R is alkoxy C 1 -C 6 ; and, Y is a copolymerizable radical selected from acrylyl, methacrylyl, 3-acrylyloxy-2-hydroxypropyl or 3-methacrylyloxy-2-hydroxypropyl.
Claim 2
Dependent Claim
31 words
Copolymerizable ultraviolet light absorber compounds having the formula: ##STR9## where R is alkoxy C 1 -C 6 ; and, Y is a copolymerizable radical selected from acrylyl, methacrylyl, 3-acrylyloxy-2-hydroxypropyl or 3-methacrylyloxy-2-hydroxypropyl.
Claim 3
Dependent Claim
9 words
Compounds according to claim 1 wherein R is methoxy.
Claim 4
Dependent Claim
9 words
A compound according to claim 1 which is 4-methoxy-2'-acrylyloxybenzazine.
Claim 5
Dependent Claim
9 words
A compound according to claim 1 which is 4-methoxy-2'-methacrylyloxybenzazine.
Claim 6
Dependent Claim
9 words
A compound according to claim 1 which is 4-methoxy-2'-(3-acrylyloxy-2-hydroxypropyl)oxybenzazine.
Claim 7
Dependent Claim
9 words
A compound according to claim 1 which is 4-methoxy-2'-(3-methacrylyloxy-2-hydroxypropyl)oxybenzazine.
References Cited (Backward Citations)
US3925236A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-04-06 | 1984-10-06 | 1985-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-04-06 | 1988-10-06 | 1989-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-04-06 | 1992-10-06 | 1993-04-07 | $7700.00 | Window Closed / Lapsed |