Polyolefin composition

Details Polyolefin composition Polyolefin composition

C - Chemistry, Metallurgy

08

K

400/3079, 400/65

C08K 5/00 (2006.01) C08K 5/527 (2006.01) C08L 23/02 (2006.01)

Patent

CA 1298021

ABSTRACT POLYOLEFIN COMPOSITION A polyolefin composition contains (1) from 0.01 to 1.0 part by weight of tris(3,5-di-t-butyl-4- hydroxybenzyl)isocyanurate, (2) from 0.01 to 0.5 part by weight of a pentaerythritol diphosphite compound represented by the formula: Image where R1 represents a methyl group, a tertiary butyl group or a tertiary amyl group, R2 represents a hydrogen atom, a methyl group, a tertiary butyl group, a tertiary amyl group, a phenyl group or a cyclohexyl group, R3 represents a hydrogen atom, a methyl group or a tertiary butyl group and R4 represents a hydrogen atom, a methyl group or a tertiary butyl group, provided that not all of R2, R3 and R4 simultaneously represent hydrogen atoms, (3) from 0.01 to 11.0 part by weight of one com- pound selected from phenyl benzoate compounds, benzo- triazole compounds and benzophenone compounds and (4) from 0.01 to 1.0 part by weight of a heterocyclic hindered amine compound which are blended with 100 parts by weight of a polyolefin. Extremely excellent light stability, particularly, at high temperature is obtained.

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