Process for polymerizing 1, 3-butadiene

Details Process for polymerizing 1, 3-butadiene Process for polymerizing 1, 3-butadiene

C - Chemistry, Metallurgy

08

F

402/444

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

Patent

CA 1219100

PROCESS FOR POLYMERIZING 1,3 -BUTADIENE ABSTRACT OF THE DISCLOSURE A process for polymerizing 1,3-butadiene, comprising bring into contact a 1,2-polymerization catalyst consisting essentially of a soluble cobalt compound, an organic aluminum halide, an organic lithium compound, and carbon disulfide or phenyl isothiocyanate with 1,3-butadiene in a polymerization medium. The process can be applied particularly advanta- geously in the preparation of 1,2-polybutadiene, and the resultant 1,2-polybutadiene has a content of syndiotactic 1,2-structural units of not less than 90%, a melting point of 200°C to 220°C, and an intrinsic viscosity [?] of 1.2 to 7.

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