Stabilised polyolefin composition.

摘要

A polyolefin composition which comprises (A) 100 parts by weight of a resin composition comprising 100 to 35 wt.% of polyolefin and 0 to 65 wt.% of inorganic filler; (B) at least 0.01 part by weight of phenolic compound selected from those of formula (I)
<CHEM>
wherein R1 represents a C1-C3 alkyl group, (C) at least 0.01 parts by weight of metal deactivator having one or more -@-@-

groups in the side chain, and
(D) 0.01 to 1 part by weight of sulfur-containing compound selected from those of formulae (II-1), (II-2), (II-3) and (II-4):

(R2-O-@-CH2CH2@@S      (II-1)
wherein R2 represents a C4-C20 alkyl group,

(R2-S-CH2CH2-@-O-CH2@@C      (II-2)
wherein R3 represents a C4-C20 alkyl group,
<CHEM>
wherein R4 represents a C3-C18 alkyl group, and R5 and R6 are selected independently from a hydrogen atom and C1-C6 alkyl groups,
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wherein R7 represents a C3-C18 alkyl group. The composition exhbits thermal stability in the presence of heavy metals.