Conjugated diolefin copolymer rubber, method for producing the same, rubber composition and tire

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United States of America Patent

PATENT NO 8022129
APP PUB NO 20100130671A1
SERIAL NO

12531346

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Abstract

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A conjugated diolefin copolymer rubber is produced by copolymerization of a conjugated diolefin and an aromatic vinyl compound and has a primary amino group and an alkoxysilyl group bonded to the copolymer chain. The conjugated diolefin copolymer rubber contains the aromatic vinyl compound in an amount of 5 to 60 wt %. The aromatic vinyl compound is densely distributed in one terminal of the copolymer chain, and is scarcely distributed in the other terminal. The conjugated diolefin copolymer rubber has a temperature difference (ΔTg) of 25° C. or more. The conjugated diolefin copolymer rubber has low hysteresis loss properties as well as improved abrasion resistance, rupture characteristics, and road grip characteristics without impairing wet skid characteristics. A method for producing the conjugated diolefin copolymer rubber is also disclosed.

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Patent Owner(s)

Patent OwnerAddress
ENEOS MATERIALS CORPORATION5-2 HIGASHI-SHINBASHI 1-CHOME MINATO-KU TOKYO 1057109 ?1057109

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nagaoka, Tamotsu Minato-ku, JP 4 56
Shibata, Masahiro Minato-ku, JP 139 1397
Sone, Takuo Minato-ku, JP 41 949
Tadaki, Toshihiro Minato-ku, JP 48 818

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