TRANSITION METAL CATALYTIC SYSTEMS AND METHODS FOR PREPARING ETHYLENE HOMOPOLYMERS OR COPOLYMERS OF THE ETHYLENE AND a-OLEFINS USING THE SAME
Provided are transition metal catalytic systems for preparing ethylene homopolymers or copolymers of ethylene with α-olefins. More specifically, provided are Group 4 transition metal catalysts, which is characterized in that the catalyst comprises around the Group 4 transition metal a cyclopentadiene derivative, and at least one aryloxide ligand(s) having a fluorenyl group or a derivative thereof (which is ready to be substituted at 9-position) that functions as an electron donor and serves to stabilize the catalytic system by surrounding an oxygen atom that links the ligand to the transition metal at ortho-position, and there is no cross-linkage between the ligands; catalytic systems comprising such transition metal catalyst and aluminoxane cocatalyst or boron compound cocatalyst; and processes for preparing ethylene homopolymers or copolymers of ethylene with α-olefins by using the same.
1 - 14 . (canceled)
15 . An ethylene homopolymer or copolymer of ethylene with α-olefin, prepared by using the transition metal compound,
wherein the transition metal compound is represented by Chemical Formula (1):
[In the formula, M represents transition metal from Group 4 in the Periodic Table of Elements;
Cp represents cyclopentadienyl ring which is η 5 -linkable to M, or a fused ring containing a cyclopentadienyl ring, in which the cyclopentadienyl ring or the fused ring containing a cyclopentadienyl ring may be further substituted by (C1-C20)alkyl, (C6-C30)aryl, (C2-C20)alkenyl or (C6-C30)ar(C1-C20)alkyl;
Ar represents (C6-C14)arylene;
R 11 and R 12 independently represent hydrogen atom, (C1-C10)alkyl or (C6-C13)aryl(C1-C10)alkyl;
n is an integer from 0 to 3; R represents (C1-C10)alkyl, (C3-C10)cycloalkyl, (C6-C13)aryl, (C1-C10)alkyl(C6-C13)aryl, (C6-C13)ar(C1-C10)alkyl or (C1-C10)alkoxy; when n is 2 or 3, individual substituents of R may be same or different;
X 1 and X 2 independently represent halogen atom, (C1-C20)alkyl, (C3-C20)cycloalkyl, (C6-C30)aryl, (C6-C30)ar(C1-C20)alkyl, (C1-C20)alkoxy, (C6-C30)aryloxy, (C3-C20)alkylsiloxy, (C6-C30)arylsiloxy, (C1-C20)alkylamino, (C6-C30)arylamino, (C1-C20)alkylthio, (C6-C30)arylthio, (C1-C20)alkylphosphine, (C6-C30)arylphosphine, (C1-C20)alkylmercapto or (C6-C30)arylmercapto;
the alkyl, cycloalkyl, aryl, arylalkyl, alkoxy, aryloxy, alkylsiloxy, arylsiloxy, alkylamino, arylamino, alkylthio, arylthio, alkylphosphine, arylphosphine, alkylmercapto, arylmercapto of R n , X 1 and X 2 ; and the arylene of Ar may be independently substituted by one or more substituent(s) selected from a group consisting of halogen, (C1-C20)alkyl, (C3-C20)cycloalkyl, (C6-C30)aryl, (C6-C30)ar(C1-C20)alkyl, (C1-C20)alkoxy, (C6-C30)aryloxy, (C3-C20)alkylsiloxy, (C6-C30)arylsiloxy, (C1-C20)alkylamino, (C6-C30)arylamino, (C1-C20)alkylthio, (C6-C30)arylthio, (C1-C20)alkylphosphine, (C6-C30)arylphosphine, (C1-C20)alkylmercapto and (C6-C30)arylmercapto; or each of them may be linked to an adjacent substituent via (C3-C12)alkylene or (C3-C12)alkenylene with or without a fused ring to form an alicyclic ring, or a monocyclic or polycyclic aromatic ring.]
16 . The ethylene homopolymer or copolymer of ethylene with α-olefin according to claim 15 , wherein Ar is selected from a group consisting of phenylene, naphthylene and fluorene.
17 . The ethylene homopolymer or copolymer of ethylene with α-olefin according to claim 15 , wherein the transition metal compound is selected from those represented by one of Chemical Formulas (1-1) to (1-6):
wherein, Cp represents cyclopentadienyl or pentamethylcyclopentadienyl;
M represents titanium, zirconium or hafnium;
R 21 through R 24 independently represent hydrogen or (C1-C10)alkyl;
R 31 through R 36 independently represent hydrogen atom, (C1-C10)alkyl, (C3-C10)cycloalkyl, (C6-C13)aryl, (C1-C10)alkyl(C6-C13)aryl, (C6-C13)ar(C1-C10)alkyl or (C1-C10)alkoxy;
X 1 and X 2 independently represent chloride, methyl, methoxy, isopropoxy, benzyl, fluorenyl, fluorenyloxy or dimethylamino.
18 . The ethylene homopolymer or copolymer of ethylene with α-olefin according to claim 15 , wherein the transition metal compound is selected from the following compounds:
wherein, Cp represents cyclopentadienyl or pentamethylcyclopentadienyl; and
X 1 and X 2 are independently selected from a group consisting of chloride, methyl, methoxy, isopropoxy, benzyl, fluorenyl, fluorenyloxy and dimethylamino.
19 . (canceled)
20 . A transition metal catalyst composition for preparing ethylene homopolymers or copolymers of ethylene with α-olefin, which comprises a transition metal compound, and alkylaluminoxane or organoaluminum cocatalyst, or boron compound cocatalyst, or a mixture thereof,
wherein the transition metal compound is represented by Chemical Formula (1):
[In the formula, M represents transition metal from Group 4 in the Periodic Table of Elements;
Cp represents cyclopentadienyl ring which is η 5 -linkable to M, or a fused ring containing a cyclopentadienyl ring, in which the cyclopentadienyl ring or the fused ring containing a cyclopentadienyl ring may be further substituted by (C1-C20)alkyl, (C6-C30)aryl, (C2-C20)alkenyl or (C6-C30)ar(C1-C20)alkyl;
Ar represents (C6-C14)arylene;
R 11 and R 12 independently represent hydrogen atom, (C1-C10)alkyl or (C6-C13)aryl(C1-C10)alkyl;
n is an integer from 0 to 3; R represents (C1-C10)alkyl, (C3-C10)cycloalkyl, (C6-C13)aryl, (C1-C10)alkyl(C6-C13)aryl, (C6-C13)ar(C1-C10)alkyl or (C1-C10)alkoxy; when n is 2 or 3, individual substituents of R may be same or different;
X 1 and X 2 independently represent halogen atom, (C1-C20)alkyl, (C3-C20)cycloalkyl, (C6-C30)aryl, (C6-C30)ar(C1-C20)alkyl, (C1-C20)alkoxy, (C6-C30)aryloxy, (C3-C20)alkylsiloxy, (C6-C30)arylsiloxy, (C1-C20)alkylamino, (C6-C30)arylamino, (C1-C20)alkylthio, (C6-C30)arylthio, (C1-C20)alkylphosphine, (C6-C30)arylphosphine, (C1-C20)alkylmercapto or (C6-C30)arylmercapto;
the alkyl, cycloalkyl, aryl, arylalkyl, alkoxy, aryloxy, alkylsiloxy, arylsiloxy, alkylamino, arylamino, alkylthio, arylthio, alkylphosphine, arylphosphine, alkylmercapto, arylmercapto of R n , X 1 and X 2 ; and the arylene of Ar may be independently substituted by one or more substituent(s) selected from a group consisting of halogen, (C1-C20)alkyl, (C3-C20)cycloalkyl, (C6-C30)aryl, (C6-C30)ar(C1-C20)alkyl, (C1-C20)alkoxy, (C6-C30)aryloxy, (C3-C20)alkylsiloxy, (C6-C30)arylsiloxy, (C1-C20)alkylamino, (C6-C30)arylamino, (C1-C20)alkylthio, (C6-C30)arylthio, (C1-C20)alkylphosphine, (C6-C30)arylphosphine, (C1-C20)alkylmercapto and (C6-C30)arylmercapto; or each of them may be linked to an adjacent substituent via (C3-C12)alkylene or (C3-C12)alkenylene with or without a fused ring to form an alicyclic ring, or a monocyclic or polycyclic aromatic ring.]