- Process for preparing styrene-butadiene rubber and butadiene rubber by solution polymerization

摘要

The present invention, both ends of the modified solution polymerized styrene-relates to a process for preparing a butadiene rubber and butadiene rubber.; To prepare a butadiene rubber or butadiene rubber-styrene The method using the anionic polymerization initiator-modified butadiene rubber or butadiene rubber after polymerization by reaction with a modifying agent of anionic polymer chain ends of the both terminals-modified styrene.; When polymerizing according to the method of the present invention, using a bifunctional initiator, a styrene-by-butadiene rubber or a low solubility, an increase in the modified processing steps viscosity and impurities of the initiator in the problem of a non-polar solvent when the polymerization solution is butadiene rubber styrene-modified without reducing the efficiency - can advantageously prepare a butadiene rubber or butadiene rubber.