申请人:Basell Poliolefine Italia s.r.l.
公开号:US07964679B2
公开(公告)日:2011-06-21
A process for preparing 1-butene polymers, comprising polymerizing 1-butene or copolymerizing 1-butene with ethylene, propylene or an alpha-olefin of formula CH2═CHT wherein T is a C3-C10 alkyl group, in the presence of a catalyst system obtainable by contacting:
A) a metallocene compound belonging to formula (I):
wherein
M is zirconium titanium or hafnium;
X, equal to or different from each other, is a hydrogen atom, a halogen atom, a hydrocarbon radical, optionally containing heteroatoms; R4, R5, R6, R7, R8, R9, R10, R11, R12 and R13 are hydrogen atoms, or C1-C4O hydrocarbon radicals optionally containing heteroatoms;
R1, R2 and R3, are linear or branched, C1-C20-alkyl radicals, optionally containing heteroatoms:
B) a lumoxane or a compound capable of forming an alkyl metallocene cation; and optionally
C) organo aluminum compound.
一种制备1-丁烯聚合物的方法,包括在催化剂系统的存在下聚合1-丁烯或共聚合1-丁烯与乙烯、丙烯或式为CH2═CHT的α-烯烃,其中T为C3-C10烷基。该催化剂系统通过接触以下化合物而获得:A)属于式(I)的金属茂化合物:其中M是锆、钛或铪;X相等或不同,是氢原子、卤素原子、烃基、可选含有杂原子;R4、R5、R6、R7、R8、R9、R10、R11、R12和R13是氢原子或C1-C4的氢氧化碳基,可选含有杂原子;R1、R2和R3是线性或支链的C1-C20烷基基团,可选含有杂原子。B)一种卢莫克烷或一种能够形成烷基茂阳离子的化合物;可选地C)有机铝化合物。