US4618638A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compositions containing alpha-cyanocinnamate ultraviolet-absorbing stabilizers substituted by an aliphatic hydroxyl group
Assignee: BASF Corp
•
Filing: 1984-11-23
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Granted: 1986-10-21
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Expires: 2004-11-23
Abstract
Abstract Alpha-cyanocinnamate ultraviolet-absorbing stabilizers of the formula ##STR1## Where T is alkyl of 4 to 14 carbon atoms, and R 4 is alkyl of 1 to 4 carbon atoms, are particularly resistant to loss during weathring of outdoor thermoset or thermoplastic coating systems while exhibiting good stabilization efficacy and compatibility in said systems.
Inventors
- 👤 Martin Dexter
- 👤 Roland A. E. Winter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/315; C08K5/04; C08K5/10; C08K5/11; C08K5/20; C08K5/34; C08K5/3467; C08K5/3472; C08K5/3475; C09; C09D; C09D7/00; C09D7/40; C09D7/48
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
46 words
A stablized composition which comprises (a) a polymer, and (b) 0.1 to 5% by weight of said polymer of a compound having the formula ##STR18## where T is alkyl of 4 to 14 carbon atoms, and R 4 is alkyl of 1 to 4 carbon atoms.
Claim 2
Dependent Claim
46 words
A stablized composition which comprises (a) a polymer, and (b) 0.1 to 5% by weight of said polymer of a compound having the formula ##STR18## where T is alkyl of 4 to 14 carbon atoms, and R 4 is alkyl of 1 to 4 carbon atoms.
Claim 3
Dependent Claim
25 words
A composition according to claim 1 wherein the compound of component (b) is selected from the group consisting (a) ethyl 4-(3-n-octyloxy-2-hydroxypropoxy)-α-cyanocinnamate; and (b) ethyl 4-(3-n-dodecyloxy-2-hydroxypropoxy)-α-cyanocinnamate.
Claim 4
Dependent Claim
27 words
A stabilized composition according to claim 1 which additionally contains 0.1 to 5% by weight, based on the polymer being stabilized, of a hindered amine light stabilizer.
Claim 5
Dependent Claim
20 words
A composition according to claim 1 where the hindered amine light stabilizer is bis(2,2,6,6-tetramethyl-4-piperidyl) sebacate, bis(1,2,2,6,6-pentamethyl-4-piperidyl) sebacate or bis(1,2,2,6,6-pentamethyl-4-piperidyl) 2-n-butyl-2-(3,5-di-tert-butyl-4-hydroxybenzyl)malonate.
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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) | 1989-10-20 | 1990-04-21 | 1990-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-10-20 | 1994-04-21 | 1994-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-10-20 | 1998-04-21 | 1998-10-21 | $7700.00 | Window Closed / Lapsed |