Patent US3875169A successfully refreshed from Google Patents.
US3875169A
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Bicyclic hindered amines
Assignee: Novartis Corp
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Filing: 1973-12-28
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Granted: 1975-04-01
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Expires: 1993-12-28
Abstract
Abstract Compounds having the formula WHEREIN R is alkyl, alkylene, phenyl, phenylene or alkyl substituted phenyl or phenylene, n is one or two and X is hydrogen, hydroxyl or oxygen, ARE GOOD LIGHT STABILIZERS. These compounds are prepared, for example, from 1,3,3-trimethyl-3-azabicyclo(2.2.2)octane-5-ol and stearic acid to give 5-stearoyloxy-1,3,3-trimethyl-2azabicyclo(2.2.2) octane which is converted by standard techniques to the corresponding 2-oxyl and 2-ol compounds.
Inventors
- 👤 Chester E Ramey
- 👤 John J Luzzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:18
CPC Classifications
C; C09; C09K; C09K15/00; C09K15/04; C09K15/30; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/74; C07D; C07D453/00; C07D453/06; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/12; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3437
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 2
Dependent Claim
5 words
A COMPOUND OF THE FORMULA
Claim 3
Dependent Claim
12 words
A compound according to claim 1 wherein X is H or O.
Claim 4
Dependent Claim
40 words
A compound according to claim 2, wherein a. when n is 1, R is phenyl or n-alkyl having 1 to 20 carbon atoms, and b. when n is 2, R is phenylene or n-alkylene having 1 to 12 carbon atoms.
Claim 5
Dependent Claim
36 words
A compound according to claim 2, wherein a. when n is 1, R is n-alkyl having 1 to 20 carbon atoms, and b. when n is 2, R is n-alkylene having 1 to 12 carbon atoms.
Claim 6
Dependent Claim
9 words
A compound according to claim 2 which is 5-acetoxy-1,3,3-trimethyl-2-azabicyclo(2.2.2)octane.
Claim 7
Dependent Claim
9 words
A compound according to claim 2 which is 5-stearoyloxy-1,3,3-trimethyl-2-azabicyclo(2.2.2)octane.
Claim 8
Dependent Claim
9 words
A compound according to claim 2 which is bis(1,3,3-trimethyl-2-azabicyclo(2.2.2)octane-5-ol)sebacate.
Claim 9
Dependent Claim
10 words
A compound according to claim 2 which is 5-stearoyloxy-1,3,3-trimethyl-2-oxyl-2-azabicyclo( 2.2.2)octane.
References Cited (Backward Citations)
GB1231380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-03-31 | 1978-09-30 | 1979-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-31 | 1982-09-30 | 1983-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-31 | 1986-09-30 | 1987-04-01 | $7700.00 | Window Closed / Lapsed |