Polypropylene composition

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United States of America Patent

PATENT NO 4407986
SERIAL NO

06388206

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Abstract

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A polypropylene composition comprising a crystalline polypropylene and a precipitated calcium carbonate which is subjected to a surface-treatment with a suitable dispersant, and has an average particle diameter of from 0.1 to 0.4.mu..

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Patent Owner(s)

Patent OwnerAddress
IDEMITSU PETROCHEMICAL CO LTDTOKYO JAPAN TOKYO METROPOLIS

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hara, Koichi Sodegaura, JP 26 310
Nomura, Manabu Sodegaura, JP 29 393
Sugi, Norio Sodegaura, JP 3 146
Tanaka, Takayoshi Sodegaura, JP 57 306

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