Cyclopenta[b]fluorenyl transition metal compound, catalyst composition containing the same, and method of preparing ethylene homopolymer or copolymer of ethylene and α-olefin using the same

摘要

The present invention relates to a new transition metal compound based on cyclopenta[b]fluorenyl group, a transition metal catalyst composition containing the same and having high catalytic activity for preparing an ethylene homopolymer or a copolymer of ethylene and one α-olefin, a method of preparing an ethylene homopolymer or a copolymer of ethylene and α-olefin using the same, and the prepared ethylene homopolymer or the copolymer of ethylene and α-olefin.

主权项

1. A transition metal compound represented by Chemical Formula 1 below: In Chemical Formula 1, M is a Group 4 transition metal in the Periodic Table of Elements; n is an integer of 1 or 2, each R1 may be the same or different when n is 2; R1 is hydrogen, (C1-C50)alkyl, halo(C1-C50)alkyl, (C3-C50)cycloalkyl, (C6-C30)aryl, (C6-C30)aryl(C1-C50)alkyl, ((C1-C50)alkyl(C6-C30)aryl)(C1-C50)alkyl, —NRaRb, —SiRcRdRe, or 5- through 7-membered N-heterocycloalkyl containing at least one nitrogen atom; R2 and R3 each are independently hydrogen, (C1-C50)alkyl, (C1-C50)alkoxy, halo(C1-C50)alkyl, (C3-C50)cycloalkyl, (C6-C30)aryl, (C6-C30)aryloxy, (C1-C50)alkyl(C6-C30)aryloxy, (C6-C30)aryl(C1-C50)alkyl, ((C1-C50)alkyl(C6-C30)aryl)(C1-C50)alkyl, —NRaRb or —SiRcRdRe; R4, R5, R10, R11 and R12 each are independently (C1-C50)alkyl, halo(C1-C50)alkyl, (C3-C50)cycloalkyl, (C6-C30)aryl, (C6-C30)aryl(C1-C50)alkyl, ((C1-C50)alkyl(C6-C30)aryl)(C1-C50)alkyl, —NRaRb, or —SiRcRdRe, and R11 and R12 may be linked via (C4-C7)alkylene to form a ring; R6, R7, R8 and R9 each are independently hydrogen, (C1-C50)alkyl, halo(C1-C50)alkyl, (C3-C50)cycloalkyl, (C1-C50)alkoxy, (C6-C30)aryl, (C6-C30)aryl(C1-C50)alkyl, ((C1-C50)alkyl(C6-C30)aryl)(C1-C50)alkyl, (C6-C30)aryloxy, (C1-C50)alkyl(C6-C30)aryloxy, N-carbazolyl, —NRaRb, or —SiRcRdRe, or may be linked to an adjacent substituent via (C1-C5)alkylene to form a ring, and at least one —CH2— of the alkylene may be substituted by a hetero atom selected from —O—, —S—, and —NR—, and the alkylene may be further substituted with (C1-C50)alkyl; aryl of R1 to R12 may be further substituted with at least one substituent selected from the group consisting of (C1-C50)alkyl, halo(C1-C50)alkyl, (C1-C50)alkoxy, (C6-C30)aryloxy, (C6-C30)aryl, (C1-C50)alkyl(C6-C30)aryl, and (C6-C30)aryl(C1-C50)alkyl; R′ and Ra to Re each are independently (C1-C50)alkyl or (C6-C30)aryl; X1 and X2 each are independently halogen, (C1-C50)alkyl, (C2-C50)alkenyl, (C3-C50)cycloalkyl (C6-C30)aryl, (C6-C30)aryl(C1-C50)alkyl, ((C1-C50)alkyl(C6-C30)aryl)(C1-C50)alkyl, (C1-C50)alkoxy, (C6-C30)aryloxy, (C1-C50)alkyl(C6-C30)aryloxy, (C1-C50)alkoxy(C6-C30)aryloxy, (C1-C50)alkylidene, —OSiRfRgRh, —SRi, —NRjRk, —PRlRm or dianion bidentate ligand consisting of 60 or less atoms containing N, P, O, S, Si, and halogen, except hydrogen, provided that one of X1 and X2 is a dianion bidentate ligand, the other is ignored; Rf to Ri each are independently (C1-C50)alkyl, (C6-C30)aryl, (C3-C50)cycloalkyl; and Rj to Rm each are independently (C1-C50)alkyl, (C6-C30)aryl, (C6-C30)aryl(C1-C50)alkyl, (C3-C50)cycloalkyl, tri(C1-C50)alkylsilyl, or tri(C6-C30)arylsilyl.