Method of producing 1,2-polybutadiene

Details Method of producing 1,2-polybutadiene Method of producing 1,2-polybutadiene

C - Chemistry, Metallurgy

08

F

402/444

C08F 136/06 (2006.01) C08F 4/44 (2006.01) C08F 4/72 (2006.01)

Patent

CA 1097450

METHOD OF PRODUCING 1,2-POLYBUTADIENE ABSTRACT OF THE DISCLOSURE Butadiene polymers containing 70% or more of 1,2- -structure and a relatively low melting point are produced by polymerizing 1,3-butadiene in the presense of a catalyst which has been prepared by admixing (A) an organic solvent solution containing 1,3-butadiene, a cobalt compound and an organoaluminium compound; (B) an amide compound of the formula (2) or (3): Image (2) or Image (3) wherein R1, R2 and R4 are respectively an H atom, aliphatic hydrocarbon radical of 1 to 7 carbon atoms or aromatic hydrocarbon radical of 6 or 7 carbon atoms, R3 is H or an aliphatic hydrocarbon radical of 1 to 3 carbon atoms and n is 2 to 5, and; (C) carbon di-sulfide. - 1 -

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