EP0273011A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
N,N-bis(hydroxyethyl)hydroxylamine ester stabilizers
Assignee: Novartis AG
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Filing: 1987-12-18
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Granted: —
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Expires: 2007-12-18
Abstract
Abstract Compounds of formula I wherein each R is alkyl of 1 to 36 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 36 carbon atoms, aralkyl of 7 to 9 carbon atoms, said aralkyl substituted by alkyl of 1 to 36 carbon atoms, or is wherein R₁ and R₂ are independently alkyl of 1 to 18 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenyl or aralkyl of 7 to 9 carbon atoms, and n is 0, 1 or 2; and X is hydroxyl or -CH₂CH(R₄)
Inventors
- 👤 Ramanathan Ravichandran
- 👤 Raymond Seltzer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 22:38
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C07; C07C; C07C229/00; C07C229/02; C07C229/04; C07C229/06; C07C229/10; C07C229/12; C08K5/32; C09; C09K; C09K15/00; C09K15/04; C09K15/20
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
151 words
A compound of the formula I wherein each R is alkyl of 1 to 36 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 36 carbon atoms, aralkyl of 7 to 9 carbon atoms, said aralkyl substituted by alkyl of 1 to 36 carbon atoms, or is wherein R₁ and R₂ are independently alkyl of 1 to 18 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenyl or aralkyl of 7 to 9 carbon atoms, and n is 0, 1 or 2; and X is hydroxyl or -CH₂CH(R₄) -OR₃ wherein R₃ is alkyl of 1 to 36 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 36 carbon atoms, aralkyl of 7 to 9 carbon atoms or said aralkyl substituted by alkyl of 1 to 36 carbon atoms, and R₄ is hydrogen or methyl.
Claim 2
Dependent Claim
151 words
A compound of the formula I wherein each R is alkyl of 1 to 36 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 36 carbon atoms, aralkyl of 7 to 9 carbon atoms, said aralkyl substituted by alkyl of 1 to 36 carbon atoms, or is wherein R₁ and R₂ are independently alkyl of 1 to 18 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenyl or aralkyl of 7 to 9 carbon atoms, and n is 0, 1 or 2; and X is hydroxyl or -CH₂CH(R₄) -OR₃ wherein R₃ is alkyl of 1 to 36 carbon atoms, cycloalkyl of 5 to 12 carbon atoms, phenyl, phenyl substituted by alkyl of 1 to 36 carbon atoms, aralkyl of 7 to 9 carbon atoms or said aralkyl substituted by alkyl of 1 to 36 carbon atoms, and R₄ is hydrogen or methyl.
Claim 3
Dependent Claim
25 words
The compound of claim 1, wherein the radicals R are independently alkyl of 1 to 18 carbon atoms, cyclopentyl, cyclohexyl, phenyl, benzyl, α-methylbenzyl or α,α-dimethylbenzyl.
Claim 4
Dependent Claim
25 words
The compound of claim 1, wherein R is a group of the formula II with R₁, R₂ and n being as defined in claim 1.
Claim 5
Dependent Claim
25 words
The compound of claim 3, wherein R is a group of the formula IIa and R₁, R₂ and n are as defined in claim 1.
Claim 6
Dependent Claim
18 words
The compound of claim 3, wherein R₁ and R₂ are independently alkyl of 4 to 8 carbon atoms.
Claim 7
Dependent Claim
9 words
The compound of claim 1, wherein X is hydroxyl.
Claim 8
Dependent Claim
20 words
The compound of claim 1, wherein X is -CH₂CH(R₄) -OR₃ and R₃ and R₄ are as defined in claim 1.
Claim 9
Dependent Claim
15 words
The compounds N,N-bis[2-stearoyloxyethyl]-N-[2ʹ-methoxycarbonylethyl]amine, N,N-bis[2-stearoylethyl]hydroxylamine, N,N-bis[2-acetoxyethyl]-N-[2ʹ-methoxycarbonylethyl]amine, N,N-bis[2-acetoxyethyl]hydroxylamine, N,N-bis[2-(3ʹ,5ʹ-di-tert-butyl-4ʹ-hydroxyphenylpropionyloxy)ethyl]-N-[2ʺ-methoxycarbonylethyl]amine, N,N-bis[2-(3ʹ,5ʹ-di-tert-butyl-4ʹ-hydroxyphenylpropionyloxy)ethyl]hydroxylamine, N,N-bis[2-(3ʹ,5ʹ-di-tert-butyl-4ʹ-hydroxybenzoyloxy)ethyl]-N-[2ʺ-methoxycarbonylethyl]amine and N,N-bis[2-(3ʹ,5ʹ-di-tert-butyl-4ʹ-hydroxybenzoyloxy)ethyl]hydroxylamine according to claim 1.
Claim 10
Dependent Claim
23 words
A composition of matter comprising an organic material subject to oxidative, thermal and actinic degradation and at least one compound of claim 1.
Claim 11
Dependent Claim
13 words
The composition of claim 9, wherein the organic material is a synthetic polymer.
Claim 12
Dependent Claim
15 words
The composition of claim 10, wherein the synthetic polymer is a polyolefin homopolymer or copolymer.
Claim 13
Dependent Claim
20 words
The composition of claim 9, which also contains a metal salt of a higher fatty acid and/or a phenolic antioxidant.
Claim 14
Dependent Claim
19 words
The composition of claim 12, wherein said phenolic antioxidant in neopentanetetrayl tetrakis(3,5-di-tert-butyl-4-hydroxyhydrocinnamate), n-octadecyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate, 1,3,5-trimethyl-2,4,6-tris(3,5-di-tert-butyl-4-hydroxybenzyl)benzene, 1,3,5-tris(3,5-di-tert-butyl-4-hydroxybenzyl)isocyanurate, 2,6-di-tert-butyl-p-cresol or 2,2ʹ-ethylidene-bis(4,6-di-tert-butylphenol).
Claim 15
Dependent Claim
21 words
The composition of claim 9, which also contains antioxidants, benzotriazole UV absorbers, hindered amine light stabilizers, phosphites, thiosynergists or mixtures thereof.
Claim 16
Dependent Claim
21 words
Use of compounds of formula I according to claim 1 for stabilizing an organic material against oxidative, thermal and actinic degradation.
References Cited (Backward Citations)
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