【摘要】 研究了负载型钛催化剂ＴｉＣｌ_４／ＭｇＣｌ_２－Ａｌ（ｉ－Ｂｕ）_３体系合成反－１，４－聚异戊二烯的基本规律。结果表明，最适宜的聚合条件为：６０℃，Ａｌ／Ｔｉ＝１０（摩尔比），Ｔｉ／Ｉｐ＝２×１０￣（－４）（摩尔比），加料顺序为汽油－Ａｌ－Ｔｉ－Ｉｐ。预聚合可有效地提高催化剂效率，而对聚合物的分子量影响不大。更多还原

【Abstract】 The trans-1,4-polyisoprene was synthesized by the polpeenzation of isoprene（Ip）with the supported titanium and triisobutylaluminium catalyst system [TiCl₄/MgCl₂-Al（i-Bu）₃]and the way to increase the catalytic efficiency was investigated through changing the polymerinzation conditions.The results showed that the optimum conditions were:temperature 60℃,Al/Ti was l0（mol ratio）,Ti/Ip was 2 x l0“（mol ratio）and feeding order was gasoline-Al-Ti-Ip.The prepolymenzation could increase the catalytic efficiency and had little influence on the molecular weight of polymer.更多还原