Process and catalyst for producing high trans 1,4-polybutadiene

Details Process and catalyst for producing high trans 1,4-polybutadiene Process and catalyst for producing high trans 1,4-polybutadiene

1978-11-13

1980-09-30

Hamrock, William F.

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526181, C08f 454

Patent

active

042256909

ABSTRACT:
The process disclosed herein comprises the use of a catalyst system comprising a complex of R.sub.2 Mg.(ROK).sub.2 in the hydrocarbon solution polymerization of 1,3-butadiene. Preferably the solvent is hexane, but cyclohexane or other alkane or cycloalkane may be used. The ratio of ROK to R.sub.2 Mg is from 1.0/1 to 5/1 and the R.sub.2 Mg and ROK are added separately to the butadiene solution. This process produces a high trans 1,4-polybutadiene which is particularly suitable as a coating for metals such as the coating of steel for beverage cans.

REFERENCES:
patent: 3294768 (1966-12-01), Wofford
patent: 3629213 (1971-12-01), Onishi et al.
patent: 3846385 (1974-11-01), Havgir et al.

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