US4863981A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synergistic mixture of stabilizers
Assignee: BASF Corp
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Filing: 1987-06-19
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Granted: 1989-09-05
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Expires: 2007-06-19
Abstract
Abstract The present invention relates to a stabilizer system containing two high-molecular polyalkylpiperidines, the use thereof for stabilizing organic material and the organic material which has been protected by means of the stabilizer system mentioned against degradation induced by light.
Inventors
- 👤 Francois Gugumus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:08
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/35; C08K5/3412; C08K5/3432; C08K5/3435; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/34926; C08L; C08L101/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
261 words
A stabilizer mixture containing (a) at least one polyalkylpiperidine of the formula I ##STR22## in which R 1 is hydrogen or methyl, R 2 is a direct bond or C 1 -C 10 -alkylene and n 1 is an integer from 2 to 100, and (b) at least one polyalkylpiperidine of the formula II ##STR23## in which R 3 , R 5 and R 6 independently of one another are hydrogen, C 1 -C 4 -alkyl, phenyl, phenyl which is substituted by --OH, C 4 -C 8 -alkyl or both, benzyl or benzyl which is substituted by --OH, C 4 -C 8 -alkyl or both or are a group of the formula III ##STR24## in which R 8 is hydrogen or methyl, R 4 is C 2 -C 8 -alkylene, R 7 is hydrogen, C 1 -C 10 -alkyl, phenyl, phenyl which is substitued by --OH, C 4 -C 8 -alkyl or both, benzyl or benzyl which is substituted by --OH, C 4 -C 8 -alkyl or both or is a group of the formula III, or R 6 and R 7 , together with the nitrogen atom to which they are attached, form a pyrrolidinyl-1-yl, piperidino, piperazin-1-yl, 4-methyl-piperazin-1-yl or morpholino group, n 2 is an integer from 2 to 100 and at least one of the radicals R 3 , R 5 , R 6 and R 7 is a piperidyl radical of the formula III, with the proviso that the stabilizer mixture does not contain a formamidine containing the structural unit ##STR25## in which R is alkyl or phenyl.
Claim 2
Dependent Claim
261 words
A stabilizer mixture containing (a) at least one polyalkylpiperidine of the formula I ##STR22## in which R 1 is hydrogen or methyl, R 2 is a direct bond or C 1 -C 10 -alkylene and n 1 is an integer from 2 to 100, and (b) at least one polyalkylpiperidine of the formula II ##STR23## in which R 3 , R 5 and R 6 independently of one another are hydrogen, C 1 -C 4 -alkyl, phenyl, phenyl which is substituted by --OH, C 4 -C 8 -alkyl or both, benzyl or benzyl which is substituted by --OH, C 4 -C 8 -alkyl or both or are a group of the formula III ##STR24## in which R 8 is hydrogen or methyl, R 4 is C 2 -C 8 -alkylene, R 7 is hydrogen, C 1 -C 10 -alkyl, phenyl, phenyl which is substitued by --OH, C 4 -C 8 -alkyl or both, benzyl or benzyl which is substituted by --OH, C 4 -C 8 -alkyl or both or is a group of the formula III, or R 6 and R 7 , together with the nitrogen atom to which they are attached, form a pyrrolidinyl-1-yl, piperidino, piperazin-1-yl, 4-methyl-piperazin-1-yl or morpholino group, n 2 is an integer from 2 to 100 and at least one of the radicals R 3 , R 5 , R 6 and R 7 is a piperidyl radical of the formula III, with the proviso that the stabilizer mixture does not contain a formamidine containing the structural unit ##STR25## in which R is alkyl or phenyl.
Claim 3
Dependent Claim
21 words
a stabilizer mixture according to claim 1, in which R 3 and R 5 are a group of the formula III.
Claim 4
Dependent Claim
43 words
A stabilizer mixture according to claim 1, in which R 6 is hydrogen and R 7 is C 1 -C 10 -alkyl, or R 6 and R 7 , together with the nitrogen atom to which they are attached, form the group ##STR26##
Claim 5
Dependent Claim
31 words
a stabilizer mixture according to claim 3, in which the radicals R 6 and R 7 , together with the nitrogen atom to which they are attached, form the group ##STR27##
Claim 6
Dependent Claim
24 words
A stabilizer mixture according to claim 1, in which n 1 and n 2 independently of one another are integers from 2 to 35.
Claim 7
Dependent Claim
58 words
A stabilizer mixture according to claim 1, in which R 3 and R 5 are a group of the formula III, R 4 is hexamethylene, R 6 and R 8 are hydrogen and R 7 is 1,1,3,3-tetramethylbutyl, or R 6 and R 7 , together with the nitrogen atom to which they are attached, form a group ##STR28##
Claim 8
Dependent Claim
22 words
A stabilizer mixture according to claim 1, in which R 2 is C 1 -C 4 -alkylene and R 1 is hydrogen.
Claim 9
Dependent Claim
13 words
A stabilizer mixture according to claim 7, in which R 2 is ethylene.
Claim 10
Dependent Claim
27 words
A composition of matter containing a polyolefin subject to degradation induced by light, stabilized with an effective stabilizing amount of a stabilizer mixture according to claim 1.
Claim 11
Dependent Claim
29 words
A method for stabilizing a polyolefin against degradation induced by light, which comprises incorporating into said polyolefin an effective stabilizing amount of a stabilizer mixture according to claim 1.
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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) | 1992-09-04 | 1993-03-06 | 1993-09-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-04 | 1997-03-06 | 1997-09-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-04 | 2001-03-06 | 2001-09-05 | $7700.00 | Window Closed / Lapsed |