申请人:SHELL INTERNATIONALE RESEARCH
MAATSCHAPPIJ B.V.
公开号:EP0437293A2
公开(公告)日:1991-07-17
A process for shortstopping a free radical polymerization of a conjugated diene and optionally a vinyl-substituted aromatic in an aqueous emulsion, using a hydroperoxide as initiator and a redox activator, comprising a divalent transition metal, a reducing agent and optionally being carried out in the presence of a modifier, and being performed by using as sole shortstopping agent an alkali metal polysulphide, and polymeric products obtained therewith.
一种在水性乳液中对共轭二烯和乙烯基取代芳香族的自由基聚合进行短截的工艺,使用过氧化氢作为引发剂和氧化还原活化剂,包括二价过渡金属和还原剂,可选择在改性剂存在下进行,并使用碱金属多硫化物作为唯一短截剂,以及由此获得的聚合物产品。