Method for continuously producing low molecular weight polymer o

Details Method for continuously producing low molecular weight polymer o Method for continuously producing low molecular weight polymer o

1988-11-03

1991-04-02

Garvin, Patrick P.

Chemistry of hydrocarbon compounds

Unsaturated compound synthesis

By addition of entire unsaturated molecules, e.g.,...

585502, 585516, 585520, C07C 202

Patent

active

050048570

ABSTRACT:
A method for continuously producing a liquid low molecular weight polymer of conjugated diolefin having a number average molecular weight of 300 to 10000. The method comprises the step of continuously polymerizing or copolymerizing conjugated diolefin in an inert hydrocarbon solvent at a temperature of 40.degree. to 70.degree. C. with maintaining the quantity of dissolved oxygen in the reaction system at 1 ppm or below and in the presence of a polymerization catalyst of an organic sodium compound and a chain transfer agent of an alkylaryl compound.

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patent: 3789090 (1974-01-01), Otsuki et al.
patent: 4313019 (1982-01-01), Hara et al.
patent: 4331823 (1982-05-01), Wieder et al.

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