Granular composite additive for polyolefin, process for producing the same, and polyolefin composition containing the same
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United States of America Patent
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Sep 7, 2004
Grant Date -
Jul 3, 2003
app pub date -
Aug 16, 2002
filing date -
Nov 2, 2000
priority date (Note) -
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Abstract
The present invention provides a multi-component granular additive for polyolefins which has a strength and a function which enable the additive to be dust-free and be of components-in-granule type. It comprises 10 parts by mass of a nucleating agent comprising an alkali metal salt or hydroxyaluminum salt of an aromatic monocarboxlylic acid or comprising an alkali metal salt or hydroxyaluminum salt of an acid aromatic phosphoric ester compound, 1 to 50 parts by mass of a phenolic antioxidant, 5 to 50 parts by mass of polyproylene, and 0 to 500 parts by mass of one or more optional additive components other than the nucleating agent and the phenolic antioxidant.
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