Promoters in the polymerization of monovinyl-aromatic compounds with primary lithium initiators

摘要

1,1-DIALKYLETHYLENES, SUCH AS ISOBUTENE, PROMOTE THE PRIMARY LITHIUM INITIATED POLYMERIZATION OF MONOVINYL-AROMATIC COMPOUNDS, SUCH AS STYRENE, EITHER IN HOMOPOLYMERIZATIONS, OR IN THE FORMATION OF A-B-A block copolymers or (A-B)aZ radial block copolymers, such as by sequential monomer addition with conjugated dienes.