초록 ▼

A very efficient catalyst system for the polymerization of 1-olefins consists of an aluminoxane and a metallocene which is a compound of the formula I [Figure] (I) in which R1 and R2 denote hydrogen atoms, halogen atoms or hydrocarbon radicals and R3 and R4 are mononuclear or polynuclear hydrocarbon

A very efficient catalyst system for the polymerization of 1-olefins consists of an aluminoxane and a metallocene which is a compound of the formula I [Figure] (I) in which R1 and R2 denote hydrogen atoms, halogen atoms or hydrocarbon radicals and R3 and R4 are mononuclear or polynuclear hydrocarbon radicals which can form a sandwich structure with the central atom and which are linked to one another by a －R6m－R5－R7n－bridge containing a hetero atom and consisting of one or several members. The catalyst system produces polymers having a high molecular weight and excellent grain morphology.

대표청구항 ▼

A compound comprising a metallocene of the formula (I) [Figure] (I) in which M1 is titanium, zirconium, vanadium, niobium or tantalum, R1 and R2 are identical or different and denote a hydrogen atom, a halogen atom, a C1-C10-alkyl group, a C6-C10-aryl group, a C2-C10-alkenyl group, a C7-C40-arylalky

A compound comprising a metallocene of the formula (I) [Figure] (I) in which M1 is titanium, zirconium, vanadium, niobium or tantalum, R1 and R2 are identical or different and denote a hydrogen atom, a halogen atom, a C1-C10-alkyl group, a C6-C10-aryl group, a C2-C10-alkenyl group, a C7-C40-arylalkyl group, a C7-C40-alkylaryl group, or a C8-C40-arylalkenyl group, R3 and R4 are identical or different and denote a mononuclear or polynuclear hydrocarbon radical which can form a sandwich structure with the central atom, R5 denotes [Figure] [Figure] in which R8 denotes a halogen atom, a C6-C10-aryl group, a C7-C40-arylalkyl group, a C8-C40-arylalkenyl group or a C7-C40-alkylaryl group, R9 and R10 are identical or different and denote a hydrogen atom, a halogen atom, a C1-C10-alkyl group, a C6-C10-aryl group, a C2-C10-alkenyl group, a C7-C40-arylalkyl group, a C8-C40-arylalkenyl group or a C7-C40-alkylaryl group or R8 and R9, or R8 and R10 each form a ring together with the atoms linking them, M2 denotes silicon or germanium and q denotes 1, 2 or 3, or R5 denotes [Figure] [Figure] 〓BR8, 〓AlR8, －Sn－, －O－, 〓SO2, 〓NR8, 〓PR8 or 〓P(O)R8, in which R8′, R9′and R10′are identical or different and denote a hydrogen atom, a halogen atom, a C1-C10-alkyl group, a C6-C10-aryl group, a C2-C10-alkenyl group, a C7-C40-arylalkyl group, a C8-C40-arylalkenyl group or a C7-C40-alkylaryl group or R8′and R9′, or R8′and R10′each form a ring together with the atoms linking them, M2′denotes tin and q denotes 1, 2 or 3, R8 denotes a halogen atom, a C6-C10-aryl group, a C2-C10-alkenyl group, a C7-C40-arylalkyl group, a C8-C40-arylalkenyl group or a C7-C40-alkylaryl group, R6 and R7 are identical or different and denote a 〓CR8R9 group, in which R8 and R9 have the abovementioned meaning, m and n are identical or different and denote zero, 1 or 2, where m+m is zero, 1 or 2.