Patent US3998784A successfully refreshed from Google Patents.
US3998784A
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US
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Compositions stabilized with piperidine derivatives
Assignee: Novartis Corp
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Filing: 1975-10-20
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Granted: 1976-12-21
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Expires: 1995-10-20
Abstract
Abstract New piperidine derivatives and in particular esters and amides of substituted (piperidinyl-4) acetic acid are used as stabilizers for polymers, especially for polyolefines.
Inventors
- 👤 Barry Cook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:09
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3412; C08K5/3432; C08K5/3435
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
199 words
A composition of matter stabilized against ultraviolet and heat deterioration which comprises a synthetic organic polymer normally subject to deterioration containing from 0.1% to 2% by weight of the polymer of a stabilizing compound of the formula ##STR21## wherein R 1 to R 2 are the same or different and each is a straight or branched alkyl residue having from 1 to 12 carbon atoms or R 1 and R 2 , together with the carbon atom to which they are attached, form a cycloalkyl group having from 5 to 12 carbon atoms, R 3 is hydrogen, a straight-or branched alkyl residue having from 1 to 4 carbon atoms, an aralkyl residue having from 7 to 9 carbon atoms, or a cycloalkyl group having 5 or 6 carbon atoms, R 4 is an ion of a metal of Group 8 of the Periodic System of Elements or a hydrocarbyl residue having from 2 to 20 carbon atoms and being either unsubstituted or substituted by halogen or interrupted by one or more oxygen or sulphur atoms, X is --O--, --S-- or >NR 5 wherein R 5 has the same significance as R 3 and n is 2, 3 or 4.
Claim 2
Dependent Claim
199 words
A composition of matter stabilized against ultraviolet and heat deterioration which comprises a synthetic organic polymer normally subject to deterioration containing from 0.1% to 2% by weight of the polymer of a stabilizing compound of the formula ##STR21## wherein R 1 to R 2 are the same or different and each is a straight or branched alkyl residue having from 1 to 12 carbon atoms or R 1 and R 2 , together with the carbon atom to which they are attached, form a cycloalkyl group having from 5 to 12 carbon atoms, R 3 is hydrogen, a straight-or branched alkyl residue having from 1 to 4 carbon atoms, an aralkyl residue having from 7 to 9 carbon atoms, or a cycloalkyl group having 5 or 6 carbon atoms, R 4 is an ion of a metal of Group 8 of the Periodic System of Elements or a hydrocarbyl residue having from 2 to 20 carbon atoms and being either unsubstituted or substituted by halogen or interrupted by one or more oxygen or sulphur atoms, X is --O--, --S-- or >NR 5 wherein R 5 has the same significance as R 3 and n is 2, 3 or 4.
Claim 3
Dependent Claim
12 words
A composition according to claim 1 wherein the polymer is a polyolefin.
Claim 4
Dependent Claim
15 words
A composition according to claim 1 wherein R 1 and R 2 are each methyl.
Claim 5
Dependent Claim
15 words
A composition according to claim 3 wherein R 3 and R 5 are each hydrogen.
Claim 6
Dependent Claim
66 words
A composition according to claim 4 wherein n is 2 and R 4 is a divalent straight- or branched aliphatic residue either saturated or unsatured having from 2 to 20 carbon atoms, a divalent alicyclic residue having from 5 to 20 carbon atoms, a divalent aralkyl residue having from 8 to 20 carbon atoms or a divalent aryl residue having from 6 to 20 carbon atoms.
Claim 7
Dependent Claim
65 words
A composition according to claim 4 wherein n is 3 and R 3 is a trivalent straight- or branched aliphatic residue, either saturated or unsaturated, having 3 to 15 carbon atoms, a trivalent alicyclic residue having from 5 to 15 carbon atoms, a trivalent aralkyl residue having from 9 to 15 carbon atoms or a trivalent aryl residue having from 6 to 16 carbon atoms.
Claim 8
Dependent Claim
44 words
A composition according to claim 4 wherein n is 4 and R 4 is a tetravalent straight- or branched aliphatic residue, either saturated or unsaturated, having from 4 to 12 carbon atoms or a tetravalent alicyclic residue having from 5 to 12 carbon atoms.
Claim 9
Dependent Claim
11 words
A composition according to claim 1 wherein R 4 is nickel.
Claim 10
Dependent Claim
11 words
A composition according to claim 2 wherein the stabilizer is 1,4-butylene-di-[(2',2',6',6'-tetramethyl-piperidinyl-4'-acetate].
Claim 11
Dependent Claim
11 words
A composition according to claim 2 wherein the stabilizer is tetrakis-[(2,2,6,6-tetramethyl-piperidinly-4)-acetoxymethyl]-methane.
Claim 12
Dependent Claim
11 words
A composition according to claim 2 wherein the stabilizer is N,N'-bis-[(2',2',6',6'-tetramethyl-piperdinyl-4)-acetyl]-hexane-1,6-diamine.
Claim 13
Dependent Claim
11 words
A composition according to claim 2 wherein the stabilizer is 1,2-ethylene-di-[(2',2',6',6'-tetramethyl-piperidinyl-4')-acetate].
Claim 14
Dependent Claim
11 words
A composition according to claim 2 wherein the stabilizer is N,N'-bis-[(2',2',6',6'-tetramethyl-piperidinyl-4')-acetyl]-ethane-1,2-diamine.
References Cited (Backward Citations)
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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) | 1979-12-21 | 1980-06-21 | 1980-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-21 | 1984-06-21 | 1984-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-21 | 1988-06-21 | 1988-12-21 | $7700.00 | Window Closed / Lapsed |