Polymerization catalyst composition, polymer manufacturing method, polymer, rubber composition, and tire

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United States of America Patent

PATENT NO 11472907
APP PUB NO 20200347169A1
SERIAL NO

16643878

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Abstract

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To provide a catalyst composition having high polymerization activity. To provide a polymer manufacturing method. To provide a polymer manufactured by the polymer manufacturing method. To provide a rubber composition including the polymer. To provide a tire using the rubber composition. A catalyst composition including a compound represented by Structural Formula I below, wherein the compound has an OH group at at least one position of the bipyridyl ring; M is a transition metal, a lanthanoid, scandium, or yttrium; R1 and R2 are a hydrocarbon group having one or more carbon atoms or a halogen atom; and R1 and R2 may be the same or different from each other. A polymer manufacturing method including a step of polymerizing one or more selected from the group consisting of a conjugated diene compound and a compound having an ethylenically unsaturated double bond in the presence of the catalyst composition. A polymer manufactured by the manufacturing method. A rubber composition including the polymer. A tire using the rubber composition.

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Patent Owner(s)

Patent OwnerAddress
BRIDGESTONE CORPORATION1-1 KYOBASHI 3-CHOME CHUO-KU TOKYO 1048340 ?1048340

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kaita, Shojiro Tokyo, JP 56 296
Osakada, Kohtaro Yokohama, JP 16 56
Takano, Shigenaga Kodaira, JP 12 6
Takeuchi, Daisuke Aomori, JP 53 241
Yamakawa, Shinji Kanagawa, JP 29 712

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