Patent ID: 6512029
Filing Date: 2003-01-28
Classification: C08K

Abstract:
A composition containingI) a polyolefin prepared by polymerization over a metallocene catalyst, and II) a stabilizer mixture comprising two different components selected from the group of components a), b) and c); component a) is at least one compound of the formula (I) â€ƒwherein A1, A3, A4 and A5 independently of one another are hydrogen, C1-C12alkyl, C5-C12cycloalkyl, C1-C4alkyl-substituted C5-C12cycloalkyl, phenyl, â€”OHâ€” and/or C1-C10alkyl-substituted phenyl, C7-C9phenylalkyl, C7-C9phenylalkyl which is substituted on the phenyl radical by â€”OH and/or C1-C10alkyl; or a group of the formula (II), â€ƒwith A6 being hydrogen, C1-C8alkyl, Oâˆ’, â€”OH, â€”CH2CN, C1-C18alkoxy, C5-C12cycloalkoxy, C3-C6alkenyl, C7-C9phenylalkyl unsubstituted or substituted on the phenyl by 1, 2 or 3 C1-C4alkyl; or C1-C8acyl, A2 is C2-C18alkylene, C5-C7cycloalkylene or C1-C4alkylenedi(C5-C7cycloalkylene), or the radicals A1, A2 and A3, together with the nitrogen atoms to which they are attached, form a 5- to 10-membered heterocyclic ring, or A4 and A5, together with the nitrogen atom to which they are attached, form a 5- to 10-membered heterocyclic ring, n1 is a number from 2 to 50, and at least one of the radicals A1, A3, A4 and A5 is a group of the formula (II); component b) is at least one compound of the formula (III) â€ƒwherein A7 is hydrogen or C1-C4alkyl, A8 is a direct bond or C1-C10alkylene and n2 is a number from 2 to 50; and component c) is at least one compound of the formula (IV) â€ƒwherein A9 and A13 independently of one another are hydrogen or C1-C12alkyl, A10, A11 and A12 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 (V), â€ƒin which A14 is hydrogen, C1-C12alkyl, C5-C12cycloalkyl, C1-C4alkyl-substituted C5-C12cycloalkyl, phenyl, â€”OHâ€” and/or C1-C10alkyl-substituted phenyl, C7-C9phenylalkyl, C7-C9phenylalkyl which is substituted on the phenyl radical by â€”OH and/or C1-C10alkyl; or a group of the formula (II) as defined above, and A15 has one of the meanings of A6; with the proviso that the group â€”N(A4)(A5) does not contain a cycloalkyl group when the stabilizer mixture comprises the two components a) and b).