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ZnR₂对镍催化体系合成高顺式聚丁二烯的影响

Effect of ZnR₂ on polymerization of 1,3-butadiene with nickel catalyst system

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【作者】史云龙；刘炼；魏志勇；廖明义；王玉荣；张春庆；胡百九；徐莹；李义章；王文英；赵永兵；

【Author】 SHI Yun-long~1,LIU Lian~1,WEI Zhi-yong~1,LIAO Ming-yi~1,WANG Yu-rong~1,ZHANG Chun-qing~1,HU Bai-jiu~1,XU Ying~1,LI Yi-zhang~2,WANG Wen-ying~2,ZHAO Yong-bing~2(1.Department of Polymer Materials, Institute of Chemical Engineering, Dalian University of Technology,Dalian 116012,China;2.Daqing Petrochemical Complex, Daqing 163714,China)

【机构】大连理工大学化工学院高分子材料系；大庆石油化工总厂；大庆石油化工总厂辽宁大连 1 1 6 0 1 2；辽宁大连 1 1 6 0 1 2；黑龙江大庆 1 6 3 71 4；黑龙江大庆 1 6 3 71 4；

【摘要】采用新的镍催化体系Ni(naph)2 Al(i Bu)3 ZnR2 BF3OEt2合成高顺式聚丁二烯,系统地研究了ZnR2的加入对聚合反应及其产物的影响。考查了聚合反应动力学,并对聚合产物进行了测试和表征。实验结果表明:在Ni Al B催化体系中加入ZnR2后,丁二烯的聚合反应速率略有降低,分子量分布逐渐变窄,顺1,4式的质量分数保持在96%以上,凝胶含量显著降低。更多还原

【Abstract】 High cis-1,4 polybutadiene was synthesized with Ni（naph）_<sub>2-Al（i-Bu）₃-ZnR_<sub>2-BF₃OEt₂ catalyst system. The kinetics of butadiene polymerization was investigated and the polybutadiene was characterized by GPC, FTIR, etc. It was found that propagation rate of polymerization of butadiene decreased,the proportion of macromolecular increased and its distribution became narrower,cis-1,4 content retained over 96% without deteriorating; gel content of polybutadiene descended, comparing with Ni（naph）_<sub>2-Al（i-Bu）₃-BF₃OEt₂ catalyst system.更多还原