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EP0290388A2
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Polyethylene stabilizer compositions comprising compounds with piperidine groups and metal compounds
Assignee: BASF Schweiz AG
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Filing: 1988-04-26
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Granted: —
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Expires: 2008-04-26
Abstract
Abstract A polyethylene stabilizer composition comprises: A) one or more compounds with piperidine groups of the formula (I) or (Ia) in which R is hydrogen, C₁-C₄-alkyl, allyl, benzyl, acetyl, acryloyl, 2-hydroxyethyl or 2-hydroxypropyl and B) one or more metal compounds such as oxides and hydroxides of Al, Mg and Zn and, if appropriate, one or more salts of Al, Ba, Ca, Mg, Sr and Zn with C₁-C₂₂-carboxylic acids.
Inventors
- 👤 Franca Masina
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-08 12:29
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/34; C08K5/3467; C08K5/3477; C08K5/3492; C08K5/34926; C08K3/00; C08K3/18; C08K3/20; C08K3/22; C08K5/3412; C08K5/3432; C08K5/3435; C08K5/35
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
51 words
A stabilizer composition for polyethylene, comprising: (A) one or more compounds with piperidine groups of the formula (I) or (Ia) in which R is hydrogen, C₁-C₄-alkyl, allyl, benzyl, acetyl, acryloyl, 2-hydroxyethyl or 2-hydroxypropyl, and (B) one or more metal compounds such as an oxide or hydroxide of Al, Mg and Zn.
Claim 2
Dependent Claim
51 words
A stabilizer composition for polyethylene, comprising: (A) one or more compounds with piperidine groups of the formula (I) or (Ia) in which R is hydrogen, C₁-C₄-alkyl, allyl, benzyl, acetyl, acryloyl, 2-hydroxyethyl or 2-hydroxypropyl, and (B) one or more metal compounds such as an oxide or hydroxide of Al, Mg and Zn.
Claim 3
Dependent Claim
33 words
A stabilizer composition for polyethylene, comprising, in addition to compounds (A) and (B) of claim 1: (C) one or more salts of Al, Ba, Ca, Mg, Sr and Zn with a C₁-C₂₂-carboxylic acid.
Claim 4
Dependent Claim
34 words
A stabilizer composition according to claim 1, wherein the compound (A) is selected from the group comprising the compounds of the formulae (II), (III), (IV), (V), (X) and (XXI) as defined in the description.
Claim 5
Dependent Claim
51 words
A stabilizer composition according to claim 1, wherein the compound (A) is selected from the group comprising compounds of the formula (II) in which R₁ is C₂-C₈-alkyl or cyclohexyl, R₂ is hydrogen or C₂-C₈-alkyl, R₃ is hydrogen or methyl, R₄ is -(CH₂)₂₋₆- and n is a number from 2 to 10.
Claim 6
Dependent Claim
45 words
A stabilizer composition according to claim 1, wherein the compound (A) is selected from the group comprising the compounds of the formula (III) in which R₁ is hydrogen or methyl, R₂ is -(CH₂)₆-, R₃ is -(CH₂)₂₋₆- and n is a number from 2 to 10.
Claim 7
Dependent Claim
66 words
A stabilizer composition according to claim 1, wherein the compound (A) is selected from the group comprising the compounds of the formula (IV), in which R₁ is hydrogen or methyl, R₂ is C₁-C₄-alkyl, n is 2, 3 or 4, and R₃ is a group of the formula -NH(CH₂)₂₋₆NH- for n = 2, -NH(CH₂)₂₋₃ (CH₂)₂₋₃NH- for n = 3 and -NH(CH₂)₂₋₃ (CH₂)₂ -(CH₂)₂₋₃NH- for n = 4.
Claim 8
Dependent Claim
36 words
A stabilizer composition according to claim 1, wherein the compound (A) is selected from the group comprising the compounds of the formula (V), in which R is -(CH₂)₂₋₆-and n is a number from 2 to 20.
Claim 9
Dependent Claim
43 words
A stabilizer composition according to claim 1, wherein the compound (A) is selected from the group comprising the co pounds of the formula (X), in which R₁ is hydrogen or methyl, R₂ is -(CH₂)₂₋₆- and n is a number from 2 to 10.
Claim 10
Dependent Claim
38 words
A stabilizer composition according to claim 1, wherein the compound (A) is selected from the group comprising the compounds of the formula (XXI), in which R₁ is C₁-C₈-alkyl, R₂ is hydrogen or methyl and X is a group
Claim 11
Dependent Claim
24 words
A stabilizer composition according to claim 1, wherein the compound (A) is that of the formula of a molecular weight between 2,000 and 4,000.
Claim 12
Dependent Claim
16 words
A stabilizer composition according to claim 1, wherein the compound (A) is that of the formula
Claim 13
Dependent Claim
16 words
A stabilizer composition according to claim 1, wherein the compound (A) is that of the formula
Claim 14
Dependent Claim
24 words
A stabilizer composition according to claim 1, wherein the compound (A) is that of the formula of a molecular weight between 2,000 and 4,000.
Claim 15
Dependent Claim
24 words
A stabilizer composition according to claim 1, wherein the compound (A) is that of the formula of a molecular weight between 2,000 and 4,000.
Claim 16
Dependent Claim
20 words
A stabilizer composition according to claim 1, wherein the compound (B) is an oxide or hydroxide of Mg or Zn.
Claim 17
Dependent Claim
18 words
A stabilizer composition according to claim 1, wherein the compound (B) is an oxide of Mg or Zn.
Claim 18
Dependent Claim
25 words
17 . A stabilizer composition according to claim 2, wherein the compound (C) is a salt of Al, Ca, Mg or Zn with C₁₂-C₁₈-carboxylic acid.
Claim 19
Dependent Claim
22 words
A stabilizer composition according to claim 2, wherein the compound (C) is a salt of Ca, Mg or Zn with stearic acid.
Claim 20
Dependent Claim
12 words
Stabilized polyethylene containing a stabilizer composition according to claim 1 or 2.
Claim 21
Dependent Claim
45 words
Stabilized polyethylene according to claim 19, wherein the percentages by weight, relative to the weight of the polyethylene, of compounds (A) and (B) are: 0.025 to 2%, preferably 0.05 to 1%, for compound (A) and 0.005 to 1%, preferably 0.025 to 0.5%, for compound (B).
Claim 22
Dependent Claim
26 words
Stabilized polyethylene according to claim 19, wherein the percentage by weight, relative to the polyethylene, of compound (C) is 0.005 to 1%, preferably 0.025 to 0.5%.
Claim 23
Dependent Claim
19 words
Stabilized polyethylene according to claim 19, which is low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE) or a mixture thereof.
Claim 24
Dependent Claim
25 words
A film, prepared from low-density polyethylene (LDPE), linear low-density polyethylene (LLDPE) or a mixture thereof, stabilized with a stabilizer composition of claim 1 or 2.
References Cited (Backward Citations)
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