POLAR ADDITIVE FOR SYNTHESIS OF COPOLYMERS OF VINYL AROMATIC MONOMER AND CONNECTED DIENE MONOMER HAVING A HIGH VINYL AROMATIC CONTENT AND LOW VINYL CONTENT

摘要

The present invention relates to the use of an N, N ', N "-substituted hexahydro-1,3,5-triazine in the anionic polymerization of a conjugated diene monomer and a vinyl aromatic monomer. The use of such a polar additive provides copolymers having both high vinyl aromatic content and low content vinyl, while the blockiness of the vinyl aromatic link can be selected as desired.