The article discussed the effects of four factors to qualities of their catalytic activities.The preliminary results indicated that the polystyrenes otained are syndiotactic polymers.

• 结果表明:二胍基钛二氯化物和MMAO组成的催化体系可以催化苯乙烯的立体规整聚合,得到高间同含量的聚苯乙烯。