Preparation of polyolefins using these compounds with organometallic transition metal compound, a bis-cyclopentadienyl ligand, and the catalyst composition,

摘要

Obtaining a metallocene with an alkyl bridge as component of the catalyst composition having capable of producing polypropylene having a melting point higher than the case of using the present invention relates known metallocene, carriers. [MEANS FOR SOLVING PROBLEMS formula (I) [Formula 1] At are represented, M ¹ is -NR ⁶ arylalkyl hydrogen, halogen, alkyl, alkenyl, aryl, or alkylaryl, or lanthanide -OR ^6, X is element or Group VI first III, IV, or V of the Periodic Table of the Elements Well, it is a natural number of 1-4, n corresponds to the oxidation number minus 2 of M ¹ means N ^7, X two groups may be bonded to each other, R ¹ is hydrogen or C ₁ -C The ₄₀ groups, R ² is the group ₄₀ means hydrogen or C ₁ -C C ₂ -C ₄₀ heteroaromatic group or aryl group and R ^3, or R ² and R ³ form a cyclic group together , ₄₀ group or a C ₁ -C hydrogen R ^4,₄₀ group C ₁ -C, and a divalent group represented by CR ⁸ R ⁹ -CR ¹⁰ R ¹¹ is Z, R ⁵ is R ^8, R ^9, R ¹⁰ and R ¹¹ are identical or different, organometallic transition metal compounds, which means the ₄₀ groups or C ₁ -C each hydrogen.