Metallocene compositions

Abstract

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: 1 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 2 —B(R14)—, —Al(R14)—, —Ge—, —Sn—, —O—, —S—, —SO—, —SO2—, —N(O4)—, —CO—, —P(R14)—, or —P(O)(R14)—, or an amidoborane radical; wherein: R14, R15 and 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, R15 and 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-C1 alkylaryl group; or, R13 is represented by the formula: 3 wherein R17 to R24 are as defined for R1 and R2, or two or more adjacent radicals R17 to R24, including R20 and R21, together with the atoms connecting them form one or more rings; preferably, R17 to R24 are hydrogen. 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.

Dependencies are inferred from the claim text.