FIELD: industry of synthetic rubber. SUBSTANCE: polymerization of butadiene-1,3 or isoprene or their copolimerization with styrene is carried out in solution of alkylaromatic solvent in the presence of hydrocarbon-soluble catalytic system: hydrocarbon compound of alkaline metal as catalyst and oxygen-containing organic compound of alkaline metal as a cocatalyst. Alkaline metal - lithium, sodium, potassium. Mass ratio diene:styrene is from 4:1 to 20:1. Process is carried out in the presence of divinylbenzene at concentration 0.01-0.40 wt.-% per 100 wt.-% diene. EFFECT: improved method of polymer preparing. 1 tbl
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Authors
Dates
1995-02-09—Published
1992-06-05—Filed