【摘要】 以Ti(OR) 4为二聚催化剂 ,以载体茂金属催化剂为共聚合催化剂 ,以烷基铝为唯一助催化剂 ,在乙烯为聚合单体的条件下原位聚合制备LLDPE ,成功地解决了两种催化剂之间的相互干扰的问题 ,该催化剂体系具有聚合活性高 ,所得聚合物密度低 ,聚合物形态可调节等优点更多还原

【Abstract】 An alternative route was investigated to prepare linear lower density polyethylene with a single monomer,ethylene,and a dual functional catalytic system for ethylene polymerization in situ using Ti(O n Bu) 4/AlEt 3 as dimerization catalyst and supported metallocene as its copolymerization catalyst.The two catalysts were well matched in a single reactor and the short branched polyethylene made from this catalytic system had the characteristics of low melting point,low density,high activity and proper\|granule morphology of polyethylene.更多还原