Process for producing polybutadiene

A high cis-1,4-polybutadiene is produced, with a reduced gel formation, by preparing a catalyst from (A) a cobalt compound, (B) a trialkyl (C1-10) aluminum compound, ( C ) a halide compound selected from those of the formulae (1) and (2): AlR mX3-m(1), R -X(2), wherein R =C1-10 hydrocarbon, X=haloge...

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Bibliographic Details
Main Authors YANO, TAKEFUMI, KOTANI, CHIKARA, TSUJIMOTO, NOBUHIRO, TSUKAHARA, KEI, AKIKAWA, KAZUHIRO
Format Patent
LanguageEnglish
Published 01.02.2001
Edition7
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Summary:A high cis-1,4-polybutadiene is produced, with a reduced gel formation, by preparing a catalyst from (A) a cobalt compound, (B) a trialkyl (C1-10) aluminum compound, ( C ) a halide compound selected from those of the formulae (1) and (2): AlR mX3-m(1), R -X(2), wherein R =C1-10 hydrocarbon, X=halogen, m = 0 to 2, R =C1-40 hydrocarbon, and (D) water in an amount of 0.77 to 1.45 moles per mole of total Al in the component (B) and (C); and polymerizing 1,3-butadiene in the presence of the resultant catalyst in a polymerization medium including an alkane, cycloalkane and/or olefin hydrocarbon, in which the organic aluminum component (B) is present in an amount of 50 to 5000 moles per mole of the cobalt component (A).
Bibliography:Application Number: TW199786108648