申请人:ExxonMobil Chemical Patents Inc.
公开号:EP1632506A1
公开(公告)日:2006-03-08
This invention relates to metallocene compositions and their use in the preparation of catalyst systems for olefin polymerization, particularly propylene polymerization. The metallocene compositions may be represented by the formula:
wherein M1 is selected from the group consisting of titanium, zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum and tungsten, preferably zirconium, hafnium or titanium, most preferably zirconium;
R1 and R2 are identical or different, and are one of a hydrogen atom, a C1-C10 alkyl group, a C1-C10 alkoxy group, a C6-C10 aryl group, a C6-C10 aryloxy group, a C2-C10 alkenyl group, a C2-C40 alkenyl group, a C7-C40 arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, an OH group or a halogen atom, or a conjugated diene which is optionally substituted with one or more hydrocarbyl, tri(hydrocarbyl)silyl groups or hydrocarbyl, tri(hydrocarbyl)silylhydrocarbyl groups, said diene having up to 30 atoms not counting hydrogen;
preferably R1 and R2 are identical and are a C1-C3 alkyl or alkoxy group, a C6-C8 aryl or aryloxy group, a C2-C4 alkenyl group, a C7-C10 arylalkyl group, a C7-C12 alkylaryl group, or a halogen atom, preferably chlorine;
R3 are identical or different and are each a hydrogen atom, a halogen atom, a C1-C10 alkyl group which may be halogenated, a C6-C10 aryl group which may be halogenated, a C2-C10 alkenyl group, a C7-C40 -arylalkyl group, a C7-C40 alkylaryl group, a C8-C40 arylalkenyl group, a -NR'2, -SR', -OR, -OSiR'3 or -PR'2 radical, wherein R' is one of a halogen atom, a C1-C10 alkyl group, or a C6-C10 aryl group; preferably R3 is not a hydrogen atom;
preferably each R3 is identical and is a fluorine, chlorine or bromine, atom, a C1-C4 alkyl group which may be halogenated, a C6-C8 aryl group which may be halogenated, a -NR'2, -SR', -OR', -OSiR'3 or -PR'2 radical, wherein R' is one of a chlorine atom, a C1-C4 alkyl group, or a C6-C8 aryl group;
more preferably, R3 are identical and are each a C3 alkyl group, most preferably isopropyl groups;
alternatively, R3 is a C1 or C2 alkyl group;
R4 to R7 are identical or different and are hydrogen, as defined for R3 or two or more adjacent radicals R5 to R7 together with the atoms connecting them form one or more rings, preferably a 4-8 membered ring , more preferably a 6-membered ring;
R13 is
-B(R14)-, -Al(R14)-, -Ge-, -Sn-, -O-, -S-, -SO-, -SO2-, -N(R14)-, -CO-, -P(R14)-, or -P(O)(R14)-, or an amidoborane radical;
wherein:
R14, R15and R16 are identical or different and are a hydrogen atom, a halogen atom, a C1-C20 alkyl group, a C1-C20 fluoroalkyl or silaalkyl group, a C6-C30 aryl group, a C6-C30 fluoroaryl group, a C1-C20 alkoxy group, a C2-C20 alkenyl group, a C7-C40 arylalkyl group, a C8-C40 arylalkenyl group, a C7-C40 alkylaryl group, or R14 and R15, together with the atoms binding them, form a cyclic ring;
preferably, R14, R15and R16 are identical and are a hydrogen atom, a halogen atom, a C1-C4 alkyl group, a CF3 group, a C6-C8 aryl group, a C6-C10 fluoroaryl group, more preferably a pentafluorophenyl group, a C1-C4 alkoxy group, in particular a methoxy group, a C2-C4 alkenyl group, a C7-C10 arylalkyl group, a C8-C12 arylalkenyl group, or a C7-C12alkylaryl group;
M2 is one or more carbons, silicon, germanium or tin, preferably silicon;
R8, R10 and R12 are identical or different and have the meanings stated for R4 to R7;
R9 and R11 are identical or different and are a Group IVA radical having from 1 to 20 carbon atoms or are each primary, secondary or tertiary butyl groups, aryl groups, isopropyl groups, fluoroalkyl groups, trialkyl silyl groups, or other groups of similar size, preferably a tertiary butyl group.
本发明涉及茂金属组合物及其在制备烯烃聚合,特别是丙烯聚合催化剂体系中的用途。茂金属组合物可由式表示:
其中 M1 选自钛、锆、铪、钒、铌、钽、铬、钼和钨组成的组,优选锆、铪或钛,最优选锆;
R1 和 R2 相同或不同,并且是氢原子、C1-C10 烷基、C1-C10 烷氧基、C6-C10 芳基、C6-C10 芳氧基、C2-C10 烯基、C2-C40 烯基、C7-C40 芳烷基、C7-C40 烷芳基中的一种、一个 C8-C40 芳烷基、一个 OH 基团或一个卤素原子,或一个共轭二烯,其可选择被一个或多个烃基、三(烃基)硅基或烃基、三(烃基)硅基烃基取代,所述二烯具有多达 30 个原子(不包括氢原子);
最好 R1 和 R2 相同,并且是 C1-C3 烷基或烷氧基、C6-C8 芳基或芳氧基、C2-C4 烯基、C7-C10 芳烷基、C7-C12 烷芳基或卤原子,最好是氯原子;
R3相同或不同,各自为氢原子、卤素原子、可卤化的C1-C10烷基、可卤化的C6-C10芳基、C2-C10烯基、C7-C40芳烷基、C7-C40 烷芳基、C8-C40 芳烯基、-NR'2、-SR'、-OR、-OSiR'3 或 -PR'2 自由基,其中 R' 是卤素原子、C1-C10 烷基或 C6-C10 芳基之一;R3 最好不是氢原子;
更优选地,每个 R3 相同,并且是氟、氯或溴原子、可卤化的 C1-C4 烷基、可卤化的 C6-C8 芳基、-NR'2、-SR'、-OR'、-OSiR'3 或 -PR'2 自由基,其中 R' 是氯原子、C1-C4 烷基或 C6-C8 芳基之一;
更优选的是,R3 相同且各自为 C3 烷基,最优选异丙基;
或者,R3 是 C1 或 C2 烷基;
R4 至 R7 相同或不同,并且是氢,如 R3 所定义,或两个或多个相邻基 R5 至 R7 与连接它们的原子一起形成一个或多个环,优选 4-8 员环,更优选 6 员环;
R13 是
-B(R14)-、-Al(R14)-、-Ge-、-Sn-、-O-、-S-、-SO-、-SO2-、-N(R14)-、-CO-、-P(R14)-或-P(O)(R14)-,或氨基硼烷基;
其中
R14、R15 和 R16 相同或不同,并且是氢原子、卤素原子、C1-C20 烷基、C1-C20 氟烷基或硅烷基、C6-C30 芳基、C6-C30 氟芳基、C1-C20 烷氧基、C2-C20 烯基、C7-C40 芳烷基、C8-C40 芳烯基、C7-C40 烷芳基,或 R14 和 R15 与结合它们的原子一起形成一个环;
优选地,R14、R15 和 R16 相同,并且是氢原子、卤素原子、C1-C4 烷基、CF3 基团、C6-C8 芳基、C6-C10 氟芳基(更优选五氟苯基)、C1-C4 烷氧基(尤其是甲氧基)、C2-C4 烯基、C7-C10 芳烷基、C8-C12 芳烯基或 C7-C12 烷芳基;
M2 是一个或多个碳、硅、锗或锡,最好是硅;
R8、R10 和 R12 相同或不同,并具有 R4 至 R7 所述的含义;
R9 和 R11 相同或不同,并且是具有 1 至 20 个碳原子的 IVA 族基团,或者各自是伯、仲或叔丁基、芳基、异丙基、氟烷基、三烷基硅基或其他类似大小的基团,最好是叔丁基。