Stabilizer mixtures

A stabilizer mixture containing

• (I) one sterically hindered amine compound selected from the group consisting of the classes (α-l), (α-2), (α-3), (α-4) and (α-5);
• and
• (II) one sterically hindered amine compound selected from the group consisting of the classes (β-1), (β-2), (β-3) and (β-4);
• (α-1) a compound of the formula (A-1)
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• in which
• E1 is C1-C4alkyl,
• m1 is 1, 2 or 4,
• if m1 is 1, E2 is C1-C25alkyl,
• if m1 is 2, E2 is C1-C14alkylene or a group of the formula (a-I)
• 39
• wherein E3 is C1-C10alkyl or C2-C10alkenyl, E4 is C1-C10alkylene, and
• E5 and E6 independently of one another are C1-C4alkyl, cyclohexyl or
• methylcyclohexyl, and
• if m1 is 4, E2 is C4-C10alkanetetrayl;
• (α-2) a compound of the formula (A-2)
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• in which
• two of the radicals E7 are —COO—(C1-C20alkyl), and
• two of the radicals E7 are a group of the formula (a-II)
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• with E8 having one of the meanings of E1;
• (α-3) a compound of the formula (A-3)
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• in which
• E9 is C1-C24alkyl, and
• E10 has one of the meanings of E1;
• (α-4) a compound of the formula (A-4)
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• wherein
• the radicals E11 independently of one another have one of the meanings of E1,
• and E12 is hydrogen, C1-C12alkyl or C1-C12alkoxy;
• (α-5) a compound of the formula (A-5)
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• wherein
• E13 has one of the meanings of E1, and
• E14 is a group of the formula (a-III)
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• wherein the radicals E15 independently of one another are C2-C12alkylene, and
• the radicals E16 independently of one another are C1-C12alkyl or C5-C12cycloalkyl;
• (β-1) a compound of the formula (B-1)
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• in which
• R1, R3, R4 and R5 independently of one another are hydrogen, C1-C12alkyl, C5-C12cycloalk
• C1-C4-alkyl-substituted C5-C12cycloalkyl, phenyl, phenyl which is substituted by —OH and/or C1-C10alkyl;
• C7-C9phenylalkyl, C7-C9phenylalkyl which is substituted on the phenyl radical by —OH and/or C1-C10alkyl;
• or a group of the formula (b-I)
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• R2 is C2-C18alkylene, C5-C7cycloalkylene or C1-C4alkylenedl(C5-C7cycloalkylene), or
• the radicals R1, R2 and R3, together with the nitrogen atoms to which they are bonded, perform a 5- to 10-membered heterocyclic ring, or
• R4 and R5, together with the nitrogen atom to which they are bonded, form a 5- to 10-membered heterocyclic ring,
• R6 is C1-C4alkyl, and
• b1 is a number from 2 to 50,
• with the proviso that at least one of the radicals R1, R3, R4 and R5 is a group of the formula (b-I);
• (β-2) a compound of the formula (B-2)
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• wherein
• R7 and R11, independently of one another are hydrogen or C1-C12alkyl,
• R8, R9 and R10 independently of one another are C2-C10alkylene, and
• X1, X2, X3, X4, X5, X6, X7 and X8 independently of one another are a group of the formula (b-II),
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• in which R12 is hydrogen, C1-C12alkyl, C5-C12cycloalkyl, C1-C4alkyl-subsbtuted
• C5-C12cycloalkyl, phenyl, —OH— and/or C1-C10 alkyl-substituted phenyl, C7-C9phenylalkyl,
• C7-C9phenylalkyl which is substituted on the phenyl radical by —OH and/or C1-C10alkyl;
• or a
• group of the formula (b-I) as defined above, and
• R13 has one of the meanings of R6;
• (β-3) a compound of the formula (B-3)
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• in which
• R14, R,5, R16, R17 and R18 independently of one another are a direct bond or
• C1-C10alkylene,
• R19 has one of the meanings of R6, and
• b2 is a number from 1 to 50;
• (β-4) a product (B-4) obtainable by reacting a product, obtained by reaction of a polyamine of the formula (B-4-1) with cyanuric chloride, with a compound of the formula (B-4-2)
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• in which
• b′3, b″3 and b′″3 independently of one another are a number from 2 to 12,
• R20 is hydrogen, C1-C12alkyl, C5-C12cycloalkyl, phenyl or C7-C9phenylalkyl, and
• R21 has one of the meanings of R6.