单活性中心茂金属催化剂催化乙烯与1-己烯共聚合  

Ethylene/1-hexene copolymerization catalyzed by single-site metallocene catalyst

作　　者：张瑞[1] 王文燕[1] 王华[1] 王立娟[1] Zhang Rui;Wang Wenyan;Wang Hua;Wang Lijuan(Daqing Chemical Research Center of Petrochemical Research Institute, Daqing 163714, China)

机构地区：[1]中国石油天然气股份有限公司石油化工研究院大庆化工研究中心,黑龙江省大庆市163714

出　　处：《合成树脂及塑料》2017年第4期21-24,39,共5页China Synthetic Resin and Plastics

摘　　要：采用自制的单活性中心茂金属催化剂为主催化剂,甲基铝氧烷为助催化剂进行乙烯与1-己烯的共聚合。考察了溶剂、助催化剂用量、反应温度、反应压力、共聚单体浓度等对催化剂活性和共聚物性能的影响。结果表明:单活性中心茂金属催化剂催化乙烯与1-己烯共聚合的适宜溶剂为正庚烷,适宜的工艺条件为n(Al)∶n(Zr)=700~1 000,反应温度100~120℃,反应压力1.20~2.00 MPa,1-己烯浓度1.00~1.84 mol/L。Ethylene/1-hexene copolymerization was carried out with a self-made single-site metalloceneas main catalyst and methylaluminoxane as cocatalyst.The effects of solvent,cocatalyst amount,reactiontemperature,reaction pressure and concentration of comonomer on the catalytic activity and polymer propertieswere investigated.The results show that the optimal solvent for the reaction is n-heptane.The optimum processconditions involve that the mole ratio of Al to Zr ranges from700to1000,reaction temperature100to120℃,reaction pressure1.20to2.00MPa,and1-hexene concentration1.00to1.84mol/L.

关 键 词：乙烯 1-己烯 单活性中心 茂金属催化剂 共聚合 

分 类 号：O631.5[理学—高分子化学]