Metallocene compounds and their use in catalysts for the polymerization of olefins
申请人:Montell Technology Company B.V.
公开号:US06268518B1
公开(公告)日:2001-07-31
It is disclosed a new class of bridged metallocene compounds of formula (I):
wherein R1 and R2 can be hydrogen, alkyl, cycloalkyl, aryl, alkylaryl or arylalkyl radicals; R3 and R4 form a condensed, 5- to 8-membered, aliphatic, aromatic or heterocyclic ring; M is a transition metal of groups 3, 4, 5, lanthanide or actinide; X is hydrogen, halogen, —R, —OR, —OSO2CF3, —OCOR, —SR, —NR2 or PR2, wherein R is an hydrocarbon substituent; and p is 0-3. Furthermore, a catalyst system for olefin polymerization based on the above bridged metallocene compounds and the ligands for their preparation are disclosed.
公开了一类新的桥式金属茂化合物,其化学式为(I):其中R1和R2可以是氢、烷基、环烷基、芳基、烷基芳基或芳基烷基基团;R3和R4形成一种紧凑的5-至8-成员的脂肪族、芳香族或杂环环;M是3、4、5族过渡金属、镧系元素或锕系元素;X是氢、卤素、—R、—OR、—OSO2CF3、—OCOR、—SR、—NR2或PR2,其中R是一个碳氢取代基;p为0-3。此外,还公开了一种基于上述桥式金属茂化合物和其配体的烯烃聚合催化剂体系。