Stabilizer mixture
Abstract
Suitable stabilizers for organic material are a mixture comprising A. at least one oligomeric compound, comprising repeat units of the formula (I), in which the meanings of the symbols are as follows: R1 is hydrogen, C1-C6-alkyl, formyl, C2-C6-alkanoyl, C1-C12-alkoxy, C5-C6-cycloalkoxy, cyanomethyl, 2-hydroxyethyl, benzyl or a radical of the formula -CR'=CH-CO-OR'', where R' is hydrogen, C1-C6-alkyl or a radical of the formula -CO-OR'', and R'' is C1-C18-alkyl, C5-C8-cycloalkyl, C7-C18-aralkyl, phenyl, or tolyl; R2 is a mixture composed of C14-C25-alkyl groups, where two of these alkyl groups whose number of carbon atoms is not permitted to differ by more than two respectively make up at least 30% of this mixture; R3 and R4, independently of one another, are C1-C6-alkyl; and B. at least one compound of the formula (II) or (III) where the meanings of the symbols and indices are as follows: n and m, independently of one another, are a natural number from 2 to 22, and R1, R3 and R4, independently of one another, have the meanings given in formula (I).
Claims
exact text as granted — not AI-modified1 . A mixture, comprising
(A) at least one oligomeric compound, comprising repeat units of the formula (I),
wherein:
R 1 is hydrogen, C 1 -C 6 -alkyl, formyl, C 2 -C 6 -alkanoyl, C 1 -C 12 -alkoxy, C 5 -C 6 -cycloalkoxy, cyanomethyl, 2-hydroxyethyl, benzyl or a radical of the formula —CR′═CH—CO—OR″, wherein
R′ is hydrogen, C 1 -C 6 -alkyl or a radical of the formula —CO—OR″, and
R″ is C 1 -C 18 -alkyl, C 5 -C 8 -cycloalkyl, C 7 -C 18 -aralkyl, phenyl, or tolyl;
R 2 is a mixture composed of C 14 -C 28 -alkyl groups, where two of these alkyl groups whose number of carbon atoms is not permitted to differ by more than two respectively make up at least 30% of this mixture;
R 3 and R 4 , independently of one another, are C 1 -C 6 -alkyl;
and
(B) at least one compound of the formula (II) or (III)
wherein:
n and m, independently of one another, are a natural number from 2 to 22,
and
R 1 , R 3 and R 4 , independently of one another, have the meanings given are as defined in formula (I).
2 . The mixture according to claim 1 ,
wherein: R 1 is H, C 1 -C 6 -alkyl, formyl, acyl, or benzyl; R 2 is a mixture composed of C 16 -C 24 -alkyl groups; R 3 and R 4 are methyl; and m and n are a natural number from 6 to 8.
3 . The mixture according to claim 1 , wherein component A is an oligomer of formula (Ia):
and component B has been selected from the group of the compounds (IIa), (IIIa), and (IIIb):
4 . A process for preparation of a mixture according to claim 1 , comprising:
a) adding component (B) to a melt of component (A) to obtain a mixture; b) homogenizing the mixture to obtain a resultant mixture; and c) converting the resultant mixture to a desired form and allowing to cool.
5 . An organic material stabilized with respect to exposure to light, oxygen, and heat, comprising from 0.01 to 5% by weight, based on the amount of the organic material, of a mixture according to claim 1 .
6 . A plastic or paint stabilized with respect to exposure to light, oxygen, and heat, comprising from 0.01 to 5% by weight, based on the amount of the organic material, of a mixture according to claim 1 .
7 . The mixture according to claim 1 , wherein the mixture is suitable as light stabilizers and other stabilizers for organic material.
8 . The mixture according to claim 7 , wherein the mixture is suitable as light stabilizers and other stabilizers for plastics and paints.
9 . A method for stabilization of organic material with respect to exposure to light, oxygen, and heat, adding a mixture according to claim 1 to the organic material.
10 . A method for stabilization of plastics and paints with respect to exposure to light, oxygen, and heat, adding a mixture according to claim 1 to the plastics, paint, or a combination thereof.
11 . A tape, comprising:
a polypropylene; and a mixture, comprising
(A) at least one oligomeric compound, comprising repeat units of the formula (I),
wherein:
R 1 is hydrogen, C 1 -C 6 -alkyl, formyl, C 2 -C 6 -alkanoyl, C 1 -C 12 -alkoxy, C 5 -C 6 -cycloalkoxy, cyanomethyl, 2-hydroxyethyl, benzyl or a radical of the formula —CR′═CH—CO—OR″, wherein
R′ is hydrogen, C 1 -C 6 -alkyl or a radical of the formula —CO—OR″, and
R″ is C 1 -C 18 -alkyl, C 5 -C 8 -cycloalkyl, C 7 -C 18 -aralkyl, phenyl, or tolyl;
R 2 is a mixture composed of C 14 -C 28 -alkyl groups, where two of these alkyl groups whose number of carbon atoms is not permitted to differ by more than two respectively make up at least 30% of this mixture;
R 3 and R 4 , independently of one another, are C 1 -C 6 -alkyl; and
(B) at least one compound of the formula (II) or (III)
wherein:
n and m, independently of one another, are a natural number from 2 to 22, and
R 1 , R 3 and R 4 , independently of one another, are as defined in formula (I).
12 . The tape according to claim 11 , wherein:
R 1 is H, C 1 -C 6 -alkyl, formyl, acyl, or benzyl; R 2 is a mixture composed of C 16 -C 24 -alkyl groups; R 3 and R 4 are methyl; and m and n are a natural number from 6 to 8.
13 . The tape according to claim 11 , wherein component A is an oligomer of formula (Ia):
and component B has been selected from the group of the compounds (IIa), (IIIa), and (IIIb):Join the waitlist — get patent alerts
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