GRANULAR COMPOSITE ADDITIVE FOR POLYOLEFIN, PROCESS FOR PRODUCING THE SAME, AND POLYOLEFIN COMPOSITION CONTAINING THE SAME

摘要

A granular composite additive for polyolefins which has a strength and a function which enable the additive to be dust-free and be of one-pack type. It comprises 10 parts by weight of a nucleating agent comprising an alkali metal salt or hydroxyaluminum salt of an aromatic monocarboxylic acid or comprising an alkali metal salt or hydroxyaluminum salt of an acid aromatic phosphoric ester compound, 1 to 50 parts by weight of a phenolic antioxidant, 5 to 50 parts by weight of polypropylene, and 0 to 500 parts by weight of one or more other additives as optional ingredients.