Patent ID: 6825372
Filing Date: 2004-11-30
Classification: C07F,C08F,Y10S

Abstract:
A compound 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 C2-C40 alkenyl group, a C7-C40 arylalkyl group, a C7-C40 alkylaryl group, a C9-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 tri(hydrocarbyl)silylhydrocarbyl groups, said diene having up to 30 atoms not counting hydrogen; 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 â€”NRâ€²2, â€”SRâ€², â€”ORâ€², â€”OSiRâ€²3 or â€”PRâ€²2 radical, wherein Râ€² is one of a halogen atom, a C1-C10 alkyl group, or a C6-C10 aryl 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; â€ƒâ€”B(R14)â€”, â€”Al(R14)â€”, â€”Geâ€”, â€”Snâ€”, â€”Oâ€”, â€”Sâ€”, â€”SOâ€”, â€”SO2â€”, â€”N(R14)â€”, â€”COâ€”, â€”P(R14), or â€”P(O)(R14)â€”, 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; or R13 is represented by the formula: wherein: R17 to R24 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 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 one or more carbons, silicon, germanium or tin; R8, R10 and R12 are identical or different and have the meanings stated for R4 to R7; and R9 and R11 are identical or different and are each primary, secondary or tertiary butyl groups.