LIU Zhongyang, YANG Ling, TAN Zhijun, HE Dawei, HU Youliang, WU Chunhong. PREPARATION OF LLDPE USING A DUAL FUNCTIONAL CATALYTIC SYSTEM OF Ti(OBu)4-METALLOCENE/B(C6F5)3-AlEt3[J]. Acta Polymerica Sinica, 2001,(4):471-475.
LIU Zhongyang, YANG Ling, TAN Zhijun, HE Dawei, HU Youliang, WU Chunhong. PREPARATION OF LLDPE USING A DUAL FUNCTIONAL CATALYTIC SYSTEM OF Ti(OBu)4-METALLOCENE/B(C6F5)3-AlEt3[J]. Acta Polymerica Sinica, 2001,(4):471-475.DOI:
Polymeriztion of linear low density polyethylene (LLDPE) using a dual functional catalytic system containing different kinds of Metallocene/AlEt3/B(C6F5)3 as copolymerization catalysts and Ti(On-Bu)4/AlEt3 as the ethylene dimerization catalyst was studied.Using the single cocatalyst AlEt3 in the catalytic system
it is easy to overcome the shortcoming of interference between two catalytic metals in a single reactor.Among the four zirconocene systems used
the most active dual functional catalytic system is[Ti(On-Bu)4/AlEt3/Et(Ind)2ZrCl2/B(C6F5)3]
its activity reaches 7.5×106 gPE/molZr·h.The density of obtained LLDPE is 0.89 g/cm3 and 1-butene insertion rate11.7 mol%