Patent ID: 6380334
Filing Date: 2002-04-30
Classification: C07F,C08F,Y10S

Abstract:
A polymerization process comprising contacting under suitable polymerization conditions one or more olefins and the reaction product of one or more activators and one or more compounds represented by the formula: wherein:M1 is selected from the group consisting of titanium zirconium, hafnium, vanadium, niobium, tantalum, chromium, molybdenum and tungsten; 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-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 are a conjugated diene which is optionally substituted with one or more hydrocarbyl, tri(hydrocarbyl)silyl groups or tri(hydrocarbyl)silylhydrocarbyl groups, said diene having up to 30 atoms not counting hydrogen; R3 are identical and are each a C1 or C2 alkyl group, a C3 alkyl group or a C4-C10 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; R13 is represented by the formula: â€ƒwherein: 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; M2 is silicon; and R8, R9, R10, R11 and R12 are identical or different and have the meanings stated for R4 to R7.