ANIONIC POLYMERIZATION PROCESS

摘要

A batch process for the anionic polymerization of a styrenic monomer is described. The process brings together a liquid saturated hydrocarbon diluent, an ether promoter, an organolithium initiator and a styrenic monomer in such a way so as to maintain the reaction mixture at or below 55~ C and so that the amount of organolithium initiator employed is in the range of 1 to 10 mol%, based upon the total amount of styrenic monomer to be added. Favorable polydispersity and molecular weight polymer characteristics are obtained.