| 摘要 |
A polyolefin composition comprising a polyolefin, and the following components: (A) a phenolic compound such as 1,3,5-tris(3,5-di-t-butyl-4-hydroxybenzyl) isocyanurate; (B) an acrylate compound represented by the formula (I): <IMAGE> (I) wherein R1 is an alkyl of 1 to 5 carbon atoms, R2 is an alkyl of 1 to 8 carbon atoms, R3 is hydrogen or an alkyl of 1 to 8 carbon atoms, and R4 is hydrogen or methyl; (C) an organic phosphorous compound such as bis(2,6-di-t-butyl-4-methylphenyl) pentaerythritol diphosphite; and (D) a hindered piperidine compound such as poly[{6-(1,1,3,3-tetramethylbutyl)imino-1,3,5-triazin-2,4-diyl}{(2,2,6,6-tetramethyl-4-piperidyl)imino}hexamethylene{(2,2,6,6-tetramethyl-4-piperidyl)imino}]. This composition is stable against thermal processing, thermal oxidation, light oxidation and discoloration, and it is especially useful for fibers and films.
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