小位阻烷氧基多取代钼化合物催化配位聚合制备高乙烯基聚丁二烯  

Preparation of high vinyl polybutadiene rubber via coordination polymerization with low-steric-hindrance alkoxy multi-substituted molybdenum

作　　者：谢廷皓 汤健 耿洁婷[1] 王晓彤 华静[1] XIE Ting-hao;TANG Jian;GENG Jie-ting;WANG Xiao-tong;HUA Jing(Key Laboratory of Rubber-Plastics of Ministry of Education/Shandong Provincial Key Laboratory of Rubber and Plastics,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]青岛科技大学橡塑材料与工程教育部重点实验室/山东省橡塑材料与工程重点实验室,山东青岛266042

出　　处：《合成橡胶工业》2022年第3期237-237,共1页China Synthetic Rubber Industry

基　　金：Supported by Shandong Provincial Natural Science Foundation(ZR 2020 ME 059)。

摘　　要：合成了一系列1,3-丁二烯聚合用低位阻烷氧基配体多取代的钼基催化剂体系,制备了高乙烯基含量聚丁二烯。结果表明,低位阻烷氧基配体可平衡配体位阻与催化剂溶解度之间的关系;制得的聚丁二烯结合乙烯基质量分数大于86%,其中乙氧基桥联的催化剂的催化活性可达1.520×10^(5)g/(mol·h),该催化体系是迄今为止报道的聚合催化活性最高的高乙烯基聚丁二烯用钼基催化体系。High vinyl polybutadiene rubber contains abundant and randomly distributed side vinyl groups,which makes it an extremely promising rubber material with high-performance.Molybdenum-based coordination polymerization of diolefin with high selectivity and high polymerization activity is an efficient method to regulate the microstructure and performance of high vinyl polybutadiene rubber[1].Generally,alkoxy ligands with low-steric hindrance are beneficial to increase the cataly-tic activity,but the poor solubility is the main limiting factor for application,when molybdenum-based catalytic system is used in the coordination polymerization of 1,3-butadiene(Bd).In this work,a series of molybdenum-based catalysts containing low-steric-hindrance alkoxy group(—OR,R stood for methyl,ethyl or n-butyl)as ligand were synthesized,and the number of ligands was changed to facilitate their solubility[2].

关 键 词：钼系催化剂 1 2-聚丁二烯 烷氧基配体 空间位阻 

分 类 号：O631.5[理学—高分子化学] O643.36[理学—化学]