环烷酸镧催化体系合成高反式聚丁二烯  

SYNTHESIS OF trans-POLYBUTADIENE BY LANTHANUM NAPHTHENATE CATALYTIC SYSTEM

作　　者：史辰君[1] 张一烽[1] 沈之荃[1] 

机构地区：[1]浙江大学高分子科学与工程学系,杭州310027

出　　处：《高分子学报》2001年第3期333-337,共5页Acta Polymerica Sinica

基　　金：国家重点基础研究! (G19990 64 80 1);国家教委资助课题! (G9840 2 )

摘　　要：采用La(naph) 3 (n Bu) 2 Mg THF三元稀土催化剂合成反 1,4 含量达 96 %的高反式聚丁二烯 .详细考察了催化剂组份的摩尔比 (Mg La ,Mg THF) ,不同稀土元素和聚合反应条件对丁二烯反式聚合反应的影响 .初步研究聚合反应动力学 。High trans-polybutadiene (over 96% trans 1,4- content) was prepared by lanthanum naphthenate, dibutyl magnesium and THF catalytic system. The dependence of polymerization on molar ratio of catalyst components (Mg/La,Mg/THF), different rare earth elements,solvents and temperature was studied in detail. It was found that the dependence of polymerization rate on monomer concentration followed the 1(st) order relationship.

关 键 词：环烷酸镧 高反式聚丁二烯 正丁基镁 合成 稀土催化剂 聚合反应动力学 

分 类 号：O632[理学—高分子化学]