【作者】 董小芳； 王立伟； 催晓鹏； 杨敏； 段中余； 刘宾元；

【Author】 DONG Xiaofang;WANG Liwei;CUI Xiaopeng;YANG Min;DUAN Zhongyu;LIU Binyuan;Institute of Polymer Materials and Science,Hebei University of Technology;

【机构】 河北工业大学高分子材料科学与工程研究所；

【摘要】 <正>聚烯烃行业上采用最多的催化体系仍然是Ziegler-Natta催化剂,Ziegler-Natta催化剂能够得到不断创新,主要依靠新的有效的内给电子体的发现^[1],而内给电子体的结构对催化剂活性以及聚合物等规度有一定影响^[2],寻找理想的内给电子体对促进烯烃工业的发展至关重要。巴塞尔公司^[3]1999年推出采用琥珀酸盐为内给电子体,琥珀酸酯作为内给电子体制备Ziegler-Natta催化,聚合物具有高等规度、较宽的分子量分布、较高的聚合活性等优点,有很更多还原

【Abstract】 Three kinds of 5-Norbornene-2,3-dicarboxylic acid ester(NDDE) with different substituent group:cis-5-Norbornene-endo-2,3-dicarboxylic acid dimethyl ester,cis-5-Norborneneendo-2,3-dicarboxylic acid diethyl ester,cis-5-Norbornene-endoo-2,3-dicarboxylic acid diisopropyl ester have been synthesized and employed as internal electron donors(IED) in 1-Butene Polymerization over Magnesium Chloride supported Ziegler-Natta catalysts.It is interesting to find that the effect of substituent group of NDDE on the catalyst activity,stereospecificity,and molecular weight and its distribution(MWD).The catalyst employing cis-5-Norbornene-endo-2,3-dicarboxylic acid diethyl ester as IED show the highest activity,employing cis-5-Norbornene-endo-2,3-dicarboxylic acid dimethyl ester as IED show the highest isotacticity of resultant PB.更多还原