Patent US3883477A successfully refreshed from Google Patents.
US3883477A
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Compositions stabilized with 1,4-disubstituted-7-azabicyclo (2.2.1) heptane-2,5 or 2, 6-dicarboxylic acid esters
Assignee: Novartis Corp
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Filing: 1973-12-28
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Granted: 1975-05-13
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Expires: 1993-12-28
Abstract
Abstract Organic polymeric materials, especially polyolefins, which are subject to ultraviolet light degradation, are effectively stabilized with compounds having the formula WHEREIN R1 is aryl, R2 is alkyl, benzyl or aryl, and R3 is alkyl.
Inventors
- 👤 Corporation Ciba-Geigy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:13
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/08; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3415; C09; C09K; C09K15/00; C09K15/04; C09K15/30
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
25 words
A COMPOSITION OF MATTER COMPRISING AN ORGANIC MATERIAL NORMALLY SUBJECT TO DETERIORATION STABILIZED WITH (A) 0.01 TO 5 PERCENT OF A STABILIZER HAVING THE FORMULA
Claim 2
Dependent Claim
25 words
A COMPOSITION OF MATTER COMPRISING AN ORGANIC MATERIAL NORMALLY SUBJECT TO DETERIORATION STABILIZED WITH (A) 0.01 TO 5 PERCENT OF A STABILIZER HAVING THE FORMULA
Claim 3
Dependent Claim
21 words
A composition of claim 1 wherein R2 is phenyl, benzyl or methyl and R3 is alkyl having 4 to 8 carbons.
Claim 4
Dependent Claim
38 words
A composition of claim 1 wherein (b) the phenolic antioxidant is selected from di-n-octadecyl 3,5-di-tert-butyl-4-hydroxybenzylphosphonate, di-n-octadecyl- Alpha , Alpha ''-bis(3-butyl-4-hydroxy-5-methylbenzyl)malonate and 2,4-bis(4-hydroxy-3, 5-di-tert-butylphenoxy)-6-(n-octylthioethylthio)-1,3,5-triazine, and (c) the thio co-stabilizer is selected from dilauryl- Beta -thiodipropionate and distearyl- Beta -thiodipropionate.
Claim 5
Dependent Claim
11 words
A composition of claim 3 wherein the organic material is polyolefin.
Claim 6
Dependent Claim
10 words
A composition of claim 4 wherein the polyolefin is polypropylene.
Claim 7
Dependent Claim
9 words
A composition of claim 5 wherein the stabilizer is
Claim 8
Dependent Claim
10 words
A composition of claim 6 containing di-n-octadecyl(3,5-di-tert-butyl-4-hydroxybenzyl phosphonate and 2(2''-hydroxy-3'',5''-di-tert-butylphenyl)-5-chlorobenzotriazole.
Claim 9
Dependent Claim
13 words
A composition of claim 7 wherein the stabilizer is di-n-butyl 1,4-diphenyl-7-azabicyclo(2.2.1)heptane-2,5- or 2,6-dicarboxylate.
Claim 10
Dependent Claim
14 words
The composition of claim 7, wherein the stabilizer is di-(2-ethylhexyl) 1,4-diphenyl-7-azabicyclo (2.2.1) heptane-2,5-or 2,6-dicarboxylate.
Claim 11
Dependent Claim
14 words
The composition of claim 7 wherein the stabilizer is di-n-butyl 1-benzyl-4-phenyl-7-azabicyclo (2.2.1) heptane-2,5-or 2,6-dicarboxylate.
Claim 12
Dependent Claim
14 words
The composition of claim 7, wherein the stabilizer is di-(2-ethylhexyl) 1-benzyl-2-phenyl-7-azabicyclo (2.2.1) heptane-2,5-or 2,6-dicarboxylate.
Claim 13
Dependent Claim
15 words
The composition of claim 7, wherein the stabilizer is di-n-butyl 1,4-diphenyl-7-azabicyclo (2.2.1) heptane-2,5- or 2,6-dicarboxylate.
Claim 14
Dependent Claim
13 words
The composition of claim 7 wherein the stabilizer is di-n-octyl 1,4-diphenyl-7-azabicyclo(2.2.1)heptane-2,5- or 2,6-dicarboxylate.
References Cited (Backward Citations)
GB1098356A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |