Method of producing 1,2-polybutadiene

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

1977-11-22

1979-05-08

Smith, Edward J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252429B, 252431N, 526136, 526335, C08F 470, C08F 3606

Patent

active

041537670

ABSTRACT:
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 presence 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): ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are respectively an H atom, aliphatic hydrocarbon radical of 1 to 7 carbon atoms or aromatic hydrocarbon radical of 6 or 7 carbon atoms, R.sub.3 is H or an aliphatic hydrocarbon radical of 1 to 3 carbon atoms and n is 2 to 5, and; (C) carbon disulfide.

REFERENCES:
patent: 3336280 (1967-08-01), Naylor
patent: 3778424 (1973-12-01), Sugiura et al.
patent: 3824226 (1974-07-01), Gunther et al.
patent: 3901868 (1975-08-01), Lleno et al.
patent: 4051308 (1977-09-01), Holasa

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