【摘要】 <正> 合成带端羟基的反应性低聚物是目前令人感兴趣的研究课题之一。因为这种低分子量的预聚物（（?）n<10⁴）,可作为大分子单体进行接枝或嵌段共聚合,获得一系列具有特殊性能的新型高分子材料。本文用高效负载型钛催化剂（TiCl₄/MgCl₂-Al（i-Bu）₃）,以ZnEt₂为链转移剂,进行乙烯丙烯共聚,再通O₂氧化,首次从配位聚合途径合成了带端羟基的乙丙低聚物。这为乙丙弹性体的功能化增添了应用前景。更多还原

【Abstract】 The supported Zeigler-Natta catalyst TiCU/MgCl2 Al(i-Bu)3 have been used to synthesize low molecular weight hydroxyl-tipped ethylene and propylene copolymer in conjunction with diethylzinc (as transfer agent). The funclionality value of the prepolymer were depended on the experimental conditions. The most of functionality was over 70%. Diethyl-zinc was used to control the molecular weight of the prepolymer, in the meantime, the functionality of the prepolymer also be dropped.更多还原