Method for producing polybutadiene having an enhanced...

Details Method for producing polybutadiene having an enhanced... Method for producing polybutadiene having an enhanced...

C - Chemistry, Metallurgy

08

F

402/444

C08F 36/06 (2006.01) C08F 4/70 (2006.01) C08F 136/06 (2006.01)

Patent

CA 1226999

METHOD FOR PRODUCING POLYBUTADIENE HAVING AN ENHANCED MECHANICAL STRENGTH ABSTRACT OF THE DISCLOSURE Polybutadiene consisting of from 5% to 30% by weight of a boiling n-hexane-insoluble fraction and from 70% to 95% by weight of a boiling n-hexane-soluble fraction and having enhanced mechanical strength is prepared by polymerizing 1,3-butadiene in a polymerization solvent in the presence of a specific catalyst consisting essentially of (A) a cobalt compound catalytic component soluble in the polymerization solvent; (B) an organic aluminum halide catalytic component; (C) a trialkyl aluminum-water reaction product in catalytic component, and (D) a catalytic component consisting of carbon disulfide and/or phenyl isothiocyanate, and by isolating the resultnat polybutadiene from the reaction mixture.

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