Metallocene compounds, process for their preparation and their use in catalytic systems for the polymerization of olefins
申请人:Basell Technology Company BV
公开号:US06444833B1
公开(公告)日:2002-09-03
A class of metallocene compounds is disclosed having the general formula (I):
wherein Y is a moiety of formula (II)
wherein A, B and D, same or different from each other, are selected from an element of the groups 14 to 16 of the Periodic Table of the Elements (new IUPAC version), with the exclusion of nitrogen and oxygen; R1, R2, R3, R4 and R5 are hydrogen or hydrocarbon groups, Z is selected from a moiety of formula (II) as described above and from a moiety of formula (III):
wherein R6, R7, R8 and R9, are hydrogen or hydrocarbon groups; L is a divalent bridging group; M is an atom of a transition metal selected from those belonging to group 3, 4, 5, 6 or to the lanthanide or actinide groups in the Periodic Table of the Elements (new IUPAC version), X, same or different, is hydrogen, a halogen, a R10, OR10, OSO2CF3, OCOR10, SR10, NR102 or PR102 group, wherein the substituents R10 are hydrogen or alkyl groups; p is an integer of from 0 to 3, being equal to the oxidation state of the metal M minus 2.
The above metallocenes are particular useful in the polymerization of propylene.
揭示了一类具有通用公式(I)的二茂铁化合物:其中Y是具有公式(II)的基团,在该基团中A、B和D,与彼此相同或不同,从元素周期表(新IUPAC版本)的14至16族元素中选择,但不包括氮和氧;R1、R2、R3、R4和R5是氢或烃基团,Z从上述描述的具有公式(II)的基团和具有公式(III)的基团中选择:其中R6、R7、R8和R9是氢或烃基团;L是双价桥连基团;M是从元素周期表(新IUPAC版本)中属于3、4、5、6族或镧系或锕系元素的过渡金属原子,X相同或不同,是氢、卤素、R10、OR10、OSO2CF3、OCOR10、SR10、NR102或PR102基团,其中取代基R10是氢或烷基基团;p是从0到3的整数,等于金属M的氧化态减2。上述二茂铁在丙烯聚合中特别有用。