JP2002265485A - Transition metal compound, olefin polymerization catalyst, olefin-based copolymer and method for producing the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a transition metal compound useful as a catalyst component used for copolyemrizing an olefin with a cyclic olefin and an olefin polymerization catalyst by using the aforesaid compound. SOLUTION: This transition metal compound is expressed by general formula (I) [M expresses a 3-10 family transition metal element (the atomic valent of M is -2); X expresses a σ-bonding ligand; Y expresses a Lewis base; q expresses 1 or 2; r expresses 0-3 integer; R<1> to R<5> express each a substituent bonded to a cyclopentadienyl group, at least one substituent is a heteroatom- containing group containing atoms except C and H]. This olefin polymerization catalyst contains the aforesaid transition metal element compound and an activating auxiliary catalyst as main ingredients.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a transition metal compound,
The present invention relates to an olefin polymerization catalyst, an olefin copolymer using the catalyst, and a method for producing the same. More specifically, a transition metal compound useful as a catalyst component for olefin polymerization and easy to synthesize, and an olefin polymerization catalyst containing the transition metal compound and providing an olefin / cyclic olefin copolymer having a high molecular weight and uniform composition And an olefin-based copolymer obtained using the catalyst and a method for efficiently producing the same.

[0002]

2. Description of the Related Art Conventionally, a soluble olefin polymerization catalyst has been used.
The combination of a transition metal compound and an aluminoxane
Are known (JP-A-58-19309).
JP, JP-A-60-217209 Publication, etc.). Also,
As the active species of the soluble olefin polymerization catalyst,
Species have been reported to be useful [Journal
Of American Chemical Society (JA)
m. Chem. Soc. )] Volume 81, page 81
(1959), Vol. 82, p. 1953 (196
0), Vol. 107, p. 7219 (1985)
Year)〕. The active species is isolated, it applied to olefin polymerization
One example is the Journal of American Chemica
Le Society (J.Am.Chem.Soc.) No.
108 volumes, 7410 pages (1986), Tokuyohei 1
JP-A-502636, JP-A-3-139504
In European Patent Publication No. 468,651.
It has been tell. However, these polymerization catalysts are:
Catalyst activity and copolymerizability for olefin polymerization
Are not always satisfactory, and these weights
The polymer obtained using the joint catalyst has a uniform composition.
And molecular weight, molecular weight distribution, etc.
It wasn't good. For example, (C_FiveH_Five)_TwoZrCl
_TwoWhere ethylene and cyclic olefin are copolymerized using
In this case, it was difficult to obtain a high molecular weight copolymer. Also,
Hexane, heptane, and cyclone, which are commonly used in industry
When a non-aromatic hydrocarbon solvent such as rohexane is used,
Problems such as uneven composition of the resulting copolymer
Was. Further modified catalyst in order to solve these problems
Then, the cost becomes high and the copolymer can be obtained at low cost.
It was difficult.

[0003]

SUMMARY OF THE INVENTION The present invention provides a novel transition metal compound which is useful as a catalyst component for copolymerization of olefins and cyclic olefins under these circumstances, and which is easy to synthesize. Provided are an olefin polymerization catalyst containing a transition metal compound, which provides an olefin / cyclic olefin copolymer having a high molecular weight and uniform composition, an olefin copolymer obtained by using the polymerization catalyst, and a method for producing the same. It is intended to do so.

[0004]

Means for Solving the Problems The present inventors have made intensive studies to achieve the above object, and as a result, a novel transition metal compound having a specific structure is easy to synthesize. It has been found that a polymerization catalyst containing an activating co-catalyst does not decrease the molecular weight during copolymerization of an olefin and a cyclic olefin, and gives an olefin / cyclic olefin copolymer having a high molecular weight and a uniform composition. The present invention has been completed based on such findings.

That is, the present invention relates to (1) a compound represented by the general formula (I):

[0006]

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[Wherein, M is group 3 to 10 of the periodic table or La
X is a metal element of the tanthanoid series, which bonds with M
And when there are a plurality of Xs, the plurality of Xs are the same and
May be different, and a cyclopentadienyl ring or Y
And may be crosslinked. Y represents a Lewis base;
When there is a number, a plurality of Y may be the same or different,
It may be crosslinked with a cyclopentadienyl ring or X.
q is an integer of 1 to 5, and represents [(valence of M) -2];
r represents an integer of 0 to 3. R¹~ R^FiveShikuropetajie is
A substituent attached to the phenyl group;
The group contains hetero atoms including atoms other than carbon and hydrogen atoms.
Shows the Arimoto. As a substituent other than the hetero atom-containing group,
It represents a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms. Ma
R¹~ R ^FiveMay be the same or different
And may form a ring with an adjacent group. ]
Transition metal compound,

(2) (A) an olefin polymerization catalyst characterized by containing a transition metal compound represented by the above general formula (I) and an activation co-catalyst as main components; Characterized by being obtained using a catalyst for
An olefin copolymer comprising an olefin and a cyclic olefin, and (4) an olefin copolymer obtained by copolymerizing an olefin and a cyclic olefin in the presence of the olefin polymerization catalyst. And a method for producing the same.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The transition metal compound of the present invention has the general formula (I)

[0010]

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A novel compound having a structure represented by the following formula: In the general formula (I), M represents a metal element belonging to Groups 3 to 10 of the periodic table or a lanthanoid series.
Specific examples of Group 10 to 10 metal elements include titanium, zirconium, hafnium, yttrium, vanadium, chromium, manganese, nickel, cobalt and palladium. Lanthanoid metal elements include
Lanthanum, cerium, neodymium and the like. In the present invention, among these, titanium which is a Group 4 element,
Zirconium and hafnium are preferred. X represents a σ-binding ligand bonded to M. When there are a plurality of Xs, the plurality of Xs may be the same or different, and may be cross-linked to a cyclopentadienyl ring or Y. X represents a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 20 carbon atoms,
An alkoxyl group having 1 to 20 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, an amide group having 1 to 20 carbon atoms, and 1 carbon atom
To 20 silicon-containing groups, a phosphide group having 1 to 20 carbon atoms,
Examples thereof include a sulfide group having 1 to 20 carbon atoms and an acyl group having 1 to 20 carbon atoms. Examples of the halogen atom include a chlorine atom, a fluorine atom, a bromine atom and an iodine atom.
Specific examples of the hydrocarbon group having 1 to 20 carbon atoms include an alkyl group such as a methyl group, an ethyl group, a propyl group, a butyl group, a hexyl group, a cyclohexyl group and an octyl group, a vinyl group, a propenyl group, and a cycloalkyl group. Alkenyl group such as hexenyl group; arylalkyl group such as benzyl group, phenylethyl group, phenylpropyl group; phenyl group, tolyl group, dimethylphenyl group, trimethylphenyl group, ethylphenyl group, propylphenyl group, biphenyl group, naphthyl group And aryl groups such as methylnaphthyl group, anthracenyl group and phenanthonyl group. Examples of the alkoxyl group having 1 to 20 carbon atoms include an alkoxyl group such as a methoxy group, an ethoxy group, a propoxy group and a butoxy group, a phenylmethoxy group and a phenylethoxy group. Examples of the aryloxy group having 6 to 20 carbon atoms include a phenoxy group, a methylphenoxy group, and a dimethylphenoxy group. Examples of the amide group having 1 to 20 carbon atoms, dimethylamide group, diethylamide group, dipropylamide group, dibutylamide group, dicyclohexyl amide group, an alkylamide group such as a methyl ethyl amide; Jibiniruamido group, di-propenyl amide group, An alkenylamide group such as a dicyclohexenylamide group; an arylalkylamide group such as a dibenzylamide group, a phenylethylamide group and a phenylpropylamide group; and an arylamide group such as a diphenylamide group and a dinaphthylamide group. Examples of the silicon-containing group having 1 to 20 carbon atoms include monohydrocarbon-substituted silyl groups such as methylsilyl group and phenylsilyl group; dihydrocarbon-substituted silyl groups such as dimethylsilyl group and diphenylsilyl group; trimethylsilyl group, triethylsilyl group; Trihydrocarbon-substituted silyls such as tripropylsilyl, dimethyl (t-butyl) silyl, tricyclohexylsilyl, triphenylsilyl, dimethylphenylsilyl, methyldiphenylsilyl, tolylsilyl, and trinaphthylsilyl A hydrocarbon-substituted silyl ether group such as a trimethylsilyl ether group; a silicon-substituted alkyl group such as a trimethylsilylmethyl group and a phenyldimethylsilylethyl group; a silicon-substituted aryl group such as a trimethylsilylphenyl group; a dimethylhydrosilyl group; Doroshiriru group, and the like. Examples of the sulfide group having 1 to 20 carbon atoms include a methyl sulfide group, an ethyl sulfide group,
Alkyl sulfide groups such as propyl sulfide group, butyl sulfide group, hexyl sulfide group, cyclohexyl sulfide group and octyl sulfide group; alkenyl sulfide group such as vinyl sulfide group, propenyl sulfide group and cyclohexenyl sulfide group; benzyl sulfide group and phenyl ethyl sulfide Groups, arylalkyl sulfide groups such as phenylpropyl sulfide group; phenyl sulfide group, tolyl sulfide group, dimethyl phenyl sulfide group, trimethyl phenyl sulfide group, ethyl phenyl sulfide group, propyl phenyl sulfide group, biphenyl sulfide group, naphthyl sulfide group, methyl Aryl sulfide such as naphthyl sulfide group, anthracenyl sulfide group, phenanthyl sulfide group Such as de group, and the like.

The acyl group having 1 to 20 carbon atoms includes formyl group, acetyl group, propionyl group, butyryl group, valeryl group, alkylacyl group such as palmitoyl group, stearoyl group, oleoyl group, benzoyl group, toluoyl group, Salicyloyl group, cinnamoyl group, naphthoyl group,
Examples include an arylacyl group such as a phthaloyl group, an oxalyl group, a malonyl group, and a succinyl group each derived from a dicarboxylic acid such as oxalic acid, malonic acid, and succinic acid. Y represents a Lewis base, and when there are a plurality of Ys, the plurality of Ys may be the same or different and may be cross-linked to a cyclopentadienyl ring or X. As Y, amines, ethers, phosphines, thioethers,
Esters, nitriles and the like can be mentioned. Specific examples of Y include ammonia, methylamine, aniline, dimethylamine, diethylamine, N-methylaniline, diphenylamine, N, N-dimethylaniline, trimethylamine, triethylamine, tri-n-butylamine, methyldiphenylamine, pyridine, p- Bromo-
Amines such as N, N-dimethylaniline; phosphines such as triethylphosphine, triphenylphosphine and diphenylphosphine; thioethers such as tetrahydrothiophene; esters such as ethyl benzoate; nitriles such as acetonitrile and benzonitrile. Can be mentioned. q is an integer of 1 to 5,
[(Valence of M) -2], and r represents an integer of 0 to 3.

Among R ^{1 to} R ⁵ , the hetero atom-containing group includes an oxygen atom-containing group, a sulfur atom-containing group, a nitrogen atom-containing group, a halogen atom-containing group and a silicon atom-containing group. Specifically, it has 1 to 2 carbon atoms such as a furyl group, a methoxy group, a methoxymethyl group, an ethoxy group and a phenoxy group.
A sulfur atom-containing group having 1 to 20 carbon atoms such as a 0 oxygen atom-containing group, a phenyl sulfide group, a methyl sulfide group, a dimethylamino group, a diethylamino group, a diphenylamino group,
Nitrogen atom-containing group of 1 to 20 carbon atoms such as dimethylaminomethyl group, a trifluoromethyl group, pentafluorophenyl group, pentafluorophenyl ethyl group, 4-fluorophenyl ethyl group, 4-trifluoro-butyl group, 4-chlorobutyl A C1-C40 silicon atom-containing group such as a C1-C20 halogen atom-containing group such as a group, a trialkylsilylmethyl group such as a trimethylsilyl group or a trimethylsilylmethyl group, or a triarylsilylmethyl group such as a triphenylsilyl group; Is mentioned. In the present invention, as the hetero atom-containing group, a silicon atom-containing group and a fluorine atom-containing group are preferable, and a trialkylsilylmethyl group and a triarylsilylmethyl group are more preferable. Examples of the alkyl group constituting the trialkylsilylmethyl group include a chain or cyclic alkyl group having 2 to 20 carbon atoms in addition to the above-mentioned methyl group. Specifically, an ethyl group,
n-propyl group, isopropyl group, n-butyl group, se
Examples thereof include a c-butyl group, a tert-butyl group, a hexyl group, a cyclohexyl group, and an octyl group. Of these, a methyl group is preferred. Examples of the aryl group constituting the triarylsilylmethyl group include an aryl group having 7 to 30 carbon atoms in addition to the phenyl group. Specific examples include a tolyl group, an ethylphenyl group, a propylphenyl group, and a biphenyl group. Phenyl group is preferred among these. Among R ^{1 to} R ^5, the group other than the hetero atom-containing group is a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms. Specific examples of the hydrocarbon group having 1 to 20 carbon atoms include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, tert-butyl, hexyl, cyclohexyl, Alkyl group such as octyl group, alkenyl group such as vinyl group, propenyl group and cyclohexenyl group, arylalkyl group such as benzyl group, phenylethyl group and phenylpropyl group; phenyl group, tolyl group, dimethylphenyl group and trimethylphenyl group , Ethylphenyl group, propylphenyl group, biphenyl group, naphthyl group, methylnaphthyl group,
And aryl groups such as anthracenyl group and phenanthrenyl group.

Specific examples of the transition metal compound represented by the general formula (I) include bis (trimethylsilylcyclopentadienyl) zirconium dichloride, bis (trimethylsilylmethylcyclopentadienyl) zirconium dichloride, and bis (triphenylsilyl). Methylcyclopentadienyl) zirconium dichloride, bis (1-trimethylsilyl-3-methylcyclopentadienyl) zirconium dichloride, bis (1-trimethylsilylmethyl-3-methylcyclopentadienyl) zirconium dichloride, bis (1-triphenyl) Silylmethyl-3
-Methylcyclopentadienyl) zirconium dichloride, bis (1-trimethylsilyl-3,4-dimethylcyclopentadienyl) zirconium dichloride, bis (trimethylsilylcyclopentadienyl) zirconium dichloride, bis (1-trimethylsilylmethyl-
3,4-dimethyl cyclopentadienyl) zirconium dichloride, bis (1-triphenylsilyl methyl -
3,4-dimethylcyclopentadienyl) zirconium dichloride, bis (1-trimethylsilyl-3-phenylcyclopentadienyl) zirconium dichloride, bis (1-trimethylsilylmethyl-3-phenylcyclopentadienyl) zirconium dichloride, bis ( 1-
Triphenylsilylmethyl-3-phenylcyclopentadienyl) zirconium dichloride, bis (trifluoromethylcyclopentadienyl) zirconium dichloride, bis (pentafluorophenylethylcyclopentadienyl) zirconium dichloride, bis (furylcyclopentadienyl) ) Zirconium dichloride, bis (1
-Trimethylsilylmethylindenyl) zirconium dichloride, bis (2-trimethylsilylindenyl) zirconium dichloride and the like, and zirconium in these compounds are replaced with titanium, hafnium or metal elements of Groups 3 to 10 excluding Group 4 of the periodic table. Substituted ones and those substituted with a lanthanoid-based metal element can be given. Of course, it is not limited to these. These transition metal compounds are, for example,
Of Organometallic Chemistry (J. Orga)
nomet. Chem. 369), p. 359 (1989). That is, the reaction of the corresponding substituted cycloalkenyl anion with the halide of M is preferred.

The olefin polymerization catalyst of the present invention, (A)
It comprises a transition metal compound represented by the aforementioned general formula (I) and an activating co-catalyst as main components, and the activating co-catalyst includes (B) a transition metal compound of the component (A) Or a compound capable of forming an ionic complex by reacting with a derivative thereof, or a clay, a clay mineral or an ion-exchangeable layered compound, and (C) an organoaluminum compound used as needed. As the (B) a transition metal compound of the component (A) of the components or compounds capable of reacting with capable of forming an ionic complex and their derivatives, (B
-1) An ionic compound that forms an ionic complex by reacting with the transition metal compound of the component (A), (B-2) aluminoxane or (B-3) Lewis acid has high polymerization activity and reduces catalyst cost. It can be mentioned preferably from the point that it can be done. As the component (B-1), any ionic compound can be used as long as it reacts with the transition metal compound of the component (A) to form an ionic complex. From the viewpoint that a polymerization active site can be formed, those represented by the following general formulas (II) and (III) are preferable.

[0016] ([L¹-R⁷]^{h +})_a([Z]^-)_b ··· (II) ([L^Two]^{h +})_a([Z]^-)_b ... (III) (where L^TwoIs M¹, R⁸R⁹M^Two, R^Ten _ThreeC or R
¹¹M^TwoIt is. [In formulas (II) and (III), L¹Is a Lewis base, [Z]^-Is
Non-coordinating anion [Z¹]^-Or [Z^Two]^-,here
[Z¹]^-Is an anion with multiple groups attached to the element
Chi [M^ThreeG¹G^Two... G^f(Where M^ThreeIs periodic
Group 5-15 elements, preferably Periodic Tables 13-15
Indicates a group element. G¹~ G^fAre hydrogen and halogen
Emissions atom, an alkyl group having 1 to 20 carbon atoms, carbon atoms 2 to 40
Dialkylamino group, alkoxyl having 1 to 20 carbon atoms
Group, an aryl group having 6 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms
Reeloxy group, alkylaryl having 7 to 40 carbon atoms
Group, an arylalkyl group having 7 to 40 carbon atoms,
20 halogen-substituted hydrocarbon groups, 1 to 20 carbon atoms
Roxy group, organic metalloid group, or C2-20
Indicate a hetero atom-containing hydrocarbon group. G¹~ G^f2 out of
One or more may form a ring. f is [(center metal M
^ThreeValence) +1]. [Z^Two]^-Is the acid digestion
The log of the reciprocal of the separation constant (pKa) is -10 or less.
Ted acid alone or in combination with Bronsted acid and Lewis acid
Conjugated base, or generally defined as a superacid
Shows a conjugate base. Also, a Lewis base may be coordinated.
No. Also, R ⁷Is hydrogen atom, alkyl having 1 to 20 carbon atoms
Group, aryl group having 6 to 20 carbon atoms, alkylaryl group
Or an arylalkyl group;⁸And R⁹Each
Cyclopentadienyl group, substituted cyclopentadienyl
Group, indenyl group, substituted indenyl group, fluorenyl group
Or a substituted fluorenyl group, R^TenIs an alkyl having 1 to 20 carbon atoms
Kill group, aryl group, alkylaryl group or aryl
Shows an alkyl group. R¹¹Is tetraphenylporphyri
And macrocyclic ligands such as phthalocyanine. h is
[L¹-R⁷], [L^Two] With an ionic valence of 1 to 3
The number a is an integer of 1 or more, and b = (h × a). M
¹Contains elements of Groups 1 to 3, 11 to 13, and 17 of the periodic table.
M^TwoIndicates an element in Groups 7 to 12 of the periodic table
You. ] Can be suitably used.

Here, specific examples of L ¹ include ammonia, methylamine, aniline, dimethylamine, diethylamine, N-methylaniline, diphenylamine,
Amines such as N, N-dimethylaniline, trimethylamine, triethylamine, tri-n-butylamine, methyldiphenylamine, pyridine, p-bromo-N, N-dimethylaniline, p-nitro-N, N-dimethylaniline, and triethylphosphine Phosphines such as triphenylphosphine and diphenylphosphine; thioethers such as tetrahydrothiophene; esters such as ethyl benzoate; and nitriles such as acetonitrile and benzonitrile.

[0018] Hydrogen atoms Specific examples of R ^7, there may be mentioned a methyl group, an ethyl group, a benzyl group, a trityl group, specific examples of R ^8, R ⁹ is a cyclopentadienyl group, methylcyclohexyl Examples thereof include a pentadienyl group, an ethylcyclopentadienyl group, and a pentamethylcyclopentadienyl group. Specific examples of R ¹⁰ include a phenyl group, a p-tolyl group, and a p-methoxyphenyl group, and specific examples of R ¹¹ include a tetraphenylporphine, phthalocyanine, allyl, methallyl, and the like. . Specific examples of M ¹ include Li, Na, K, Ag, Cu, Br, I, and I _3.
Etc. may be mentioned. Specific examples of M ² is, M
n, Fe, Co, Ni, Zn and the like.

[Z ¹ ] ⁻ , that is, [M ³ G ¹ G
² ... G ^f ], B and A are specific examples of M ^3.
l, Si, P, As, Sb, etc., preferably B or Al
Is mentioned. Specific examples of G ¹ , G ^{2 to} G ^f include a dimethylamino group and a diethylamino group as a dialkylamino group, a methoxy group, an ethoxy group, an n-butoxy group, a phenoxy group and the like as an alkoxyl group or an aryloxy group. methyl group as a hydrocarbon group, an ethyl group, n- propyl group, an isopropyl group, n- butyl group, an isobutyl group, n- octyl group, n- eicosyl group, a phenyl group, p- tolyl group, a benzyl group, 4-t −
Butylphenyl group, 3,5-dimethylphenyl group, etc.
Fluorine, chlorine, bromine, iodine as a halogen atom, p-fluorophenyl group as a hetero atom-containing hydrocarbon group,
3,5-difluorophenyl group, pentachlorophenyl group, 3,4,5-trifluorophenyl group, pentafluorophenyl group, 3,5-bis (trifluoromethyl)
Phenyl group, bis (trimethylsilyl) methyl group, etc.
Examples of the organic metalloid group include a pentamethylantimony group, a trimethylsilyl group, a trimethylgermyl group, a diphenylarsine group, a dicyclohexylantimony group, and diphenylboron.

In addition, a non-coordinating anion, ie, pKa
Specific examples of the conjugated base [Z ² ] ⁻ , which is a Brönsted acid alone or a combination of a Brönsted acid and a Lewis acid having a -10 or less, include trifluoromethanesulfonic acid anion (CF ₃ SO ₃ ) ⁻ , bis (trifluoromethanesulfonyl) ) Methyl anion, bis (trifluoromethanesulfonyl) benzyl anion, bis (trifluoromethanesulfonyl) amide, perchlorate anion (Cl
O ₄ ) ^- , trifluoroacetic acid anion (CF ₃ CO ₂ )
-, Hexafluoroantimony anion (SbF ₆ )-
, Fluorosulfonic acid anion (FSO ₃ ) ⁻ , chlorosulfonic acid anion (ClSO ₃ ) ⁻ , fluorosulfonic acid anion / 5-antimony fluoride (FSO ₃ / S
bF ₅₎ ^-, fluorosulfonic acid anion / 5- fluoride arsenic ^{_{(FSO 3 / AsF 5) -}} , trifluoromethanesulfonic acid / antimony pentafluoride (CF ₃ SO ₃ / Sb
F ₅₎ ^-, and the like.

Specific examples of such an ionic compound which reacts with the transition metal compound of the component (A) to form an ionic complex, ie, the compound of the component (B-1), include:
Triethylammonium tetraphenylborate, tri-n-butylammonium tetraphenylborate, trimethylammonium tetraphenylborate, tetraethylammonium tetraphenylborate, methyl (tri-n-butyl) ammonium tetraphenylborate, benzyltetraphenylborate (tri-n-butyl) Butyl) ammonium, dimethyldiphenylammonium tetraphenylborate, triphenyl (methyl) ammonium tetraphenylborate, trimethylanilinium tetraphenylborate, methylpyridinium tetraphenylborate, benzylpyridinium tetraphenylborate, methyltetraphenylborate (2-cyanopyridinium) , Triethylammonium tetrakis (pentafluorophenyl) borate, tetrakis (pentafluorophenyl) borate ) Tri-n-butylammonium borate, triphenylammonium tetrakis (pentafluorophenyl) borate, tetra-n-butylammonium tetrakis (pentafluorophenyl) borate, tetraethylammonium tetrakis (pentafluorophenyl) borate, tetrakis (pentafluorophenyl) Benzyl (tri-n-butyl) ammonium borate, methyldiphenylammonium tetrakis (pentafluorophenyl) borate, triphenyl (methyl) ammonium tetrakis (pentafluorophenyl) borate, methylanilinium tetrakis (pentafluorophenyl) borate, tetrakis (pentane) Dimethylanilinium fluorophenyl) borate, trimethylanilinium tetrakis (pentafluorophenyl) borate, tetrakis Methylpyridinium pentafluorophenyl) borate, benzylpyridinium tetrakis (pentafluorophenyl) borate, methyl (2-cyanopyridinium) tetrakis (pentafluorophenyl) borate, benzyl (2-cyanopyridinium) tetrakis (pentafluorophenyl) borate, tetrakis ( Methyl (pentafluorophenyl) borate (4-cyanopyridinium), triphenylphosphonium tetrakis (pentafluorophenyl) borate, tetrakis [3
5-di (trifluoromethyl) phenyl] dimethylanilinium borate, ferrocenium tetraphenylborate, silver tetraphenylborate, trityl tetraphenylborate, tetraphenylporphyrin manganese tetraphenylborate, ferrocenium tetrakis (pentafluorophenyl) borate, tetrakis (pentane) Fluorophenyl) borate (1,1′-dimethylferrocenium), decamethylferrocenium tetrakis (pentafluorophenyl) borate, silver tetrakis (pentafluorophenyl) borate,
Trityl tetrakis (pentafluorophenyl) borate,
Lithium tetrakis (pentafluorophenyl) borate,
Sodium tetrakis (pentafluorophenyl) borate, tetraphenylporphyrin manganese tetrakis (pentafluorophenyl) borate, silver tetrafluoroborate, silver hexafluorophosphate, silver hexafluoroarsenate,
Examples thereof include silver perchlorate, silver trifluoroacetate, and silver trifluoromethanesulfonate.

The component (B-1), which is an ionic compound which forms an ionic complex by reacting with the transition metal compound of the component (A), may be used alone or in combination of two or more. May be used in combination. On the other hand, examples of the aluminoxane of the component (B-2) include a chain aluminoxane represented by the following general formula (IV) and a cyclic aluminoxane represented by the following general formula (V).

[0023]

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(In the formula, R ¹² is each having 1 to 2 carbon atoms.
It represents 0, preferably 1 to 8 alkyl groups, which may be the same or different. In addition, w is 2 ≦ w ≦
40 and s are integers of 1 <s ≦ 50. Specific examples include aluminoxanes such as methylaluminoxane, ethylaluminoxane and isobutylaluminoxane. As a method for producing the aluminoxane,
A method of contacting an alkylaluminum with a condensing agent such as water may be mentioned, but the method is not particularly limited, and the reaction may be performed according to a known method. For example, a method of dissolving an organoaluminum compound in an organic solvent and bringing it into contact with water, a method of adding an organoaluminum compound at the beginning during polymerization and adding water later, water of crystallization contained in a metal salt or the like, There are a method of reacting water adsorbed on an inorganic or organic substance with an organoaluminum compound, a method of reacting a trialkylaluminum with a tetraalkyldialuminoxane, and further reacting water. In addition,
The aluminoxane may be toluene-insoluble. These aluminoxanes may be used alone or in a combination of two or more.

The Lewis acid as the component (B-3) is not particularly limited, and may be an organic compound or a solid inorganic compound. As the organic compound, a boron compound or an aluminum compound is preferably used, and as the inorganic compound, a magnesium compound, an aluminum compound, or the like is preferably used because active points can be efficiently formed. Examples of the aluminum compound include bis (2,6-di-t-butyl-4-methylphenoxy) aluminum methyl, (1,1-bi-
2-naphthoxy) aluminum methyl and the like; magnesium compounds such as magnesium chloride and diethoxymagnesium; aluminum compounds such as aluminum oxide and aluminum chloride; and boron compounds such as triphenylboron and tris (pentafluorophenyl). Boron, tris [3,5-bis (trifluoromethyl) phenyl] boron, tris [(4-fluoromethyl) phenyl] boron, trimethylboron, triethylboron, tri-n-butyl-boron, tris (fluoromethyl) boron , Tris (pentafluoroethyl) boron, tris (nonafluorobutyl) boron, tris (2,4,6-
Trifluorophenyl) boron, tris (3,5-difluoro) boron, tris [3,5-bis (trifluoromethyl) phenyl] boron, bis (pentafluorophenyl)
Fluoroboron, diphenylfluoroboron, bis (pentafluorophenyl) chloroboron, dimethylfluoroboron, diethylfluoroboron, di-n-butylfluoroboron, pentafluorophenyldifluoroboron, phenyldifluoroboron, pentafluorophenyldichloroboron, methyldifluoro Boron, ethyldifluoroboron, n
-Butyldifluoroboron and the like. One of these Lewis acids may be used, or two or more thereof may be used in combination.

On the other hand, in the (B-4) clay, clay mineral or ion-exchange layered compound of the component (B), the clay is an aggregate of fine hydrated silicate minerals. It is a substance that produces plasticity when mixed and kneaded, exhibits rigidity when dried, and sinters when baked at a high temperature. Clay minerals are hydrated silicates that are a main component of clay. For the preparation of the olefin polymerization catalyst component, any of clay and clay mineral may be used, and these may be naturally occurring or artificially synthesized. The ion-exchange layered compound is a compound having a crystal structure in which planes formed by ionic bonds and the like are stacked in parallel with weak bonding force to each other, and the ions contained therein can be exchanged. Some clay minerals are ion-exchangeable layered compounds.

Specific examples of the component (B-4) include, for example, phyllosilicic acids as clay minerals. The phyllosilicic acids include phyllosilicic acid and phyllosilicates. The phyllosilicate, be mentioned as a natural product, montmorillonite belonging to the smectite group, saponite, hectorite, illite belonging to the mica group, a mixed layer minerals such as sericite and smectites and mica group or mica group and vermiculite group Can be.
As synthetic products, tetrasilicic mica, laponite,
And the like can be given Sumecton. In addition, α-Zr
(HPO ₄ ) ₂ , γ-Zr (HPO ₄ ) ₂ , α-Ti
Ionic crystalline compounds having a layered crystal structure that are not clay minerals, such as (HPO ₄ ) ₂ and γ-Ti (HPO ₄ ) _2, can be used.

Clays and clay minerals that do not belong to the ion-exchangeable layered compound include clays called bentonite due to low montmorillonite content, Kibushi clay, montmorillonite which contains many other components in montmorillonite, and fibrous forms. Sepiolite, palygorskite, amorphous or low crystalline allophane, imogolite, etc. Further, as the component (B-4), particles having a volume average particle diameter of 10 μm or less are preferable, and particles having a volume average particle diameter of 3 μm or less are more preferable. In general the particle shape of the particles have a particle size distribution, (B
-4) The component has a volume average particle diameter of 10 μm or less, and a content ratio of a volume average particle diameter of 3.0 μm or less is 1
It preferably has a particle size distribution of 0% by weight or more,
It is more preferable to have a volume average particle diameter of 10 μm or less and a particle size distribution in which the content ratio of the volume average particle diameter of 1.5 μm or less is 10% by weight or more. As a method for measuring the volume average particle diameter and the content ratio, for example, a device for measuring the particle diameter by light transmission by laser light (GALAI P
production Ltd. Measurement method using CIS-1) manufactured by Toshiba Corporation. Further, the component (B-4) may be a component pretreated with an organic silicon compound or an organic aluminum compound.

Among these components (B-4), quaternary ammonium salts (although not particularly limited, quaternary alkyl ammonium salts, quaternary aryl ammonium salts, quaternary aryl alkyl ammonium salts, quaternary benzyl salts) Ammonium salts,
Those having high ability to adsorb or react with a clay or the like to form an interlayer compound (also referred to as intercalation) are preferred. For example, clay or clay mineral is preferable, specifically, phyllosilicic acids are preferable, smectite is more preferable, and montmorillonite is particularly preferable. Further, as the synthetic product, tetrasilicic mica is preferable.

In the polymerization catalyst of the present invention, the use ratio of the catalyst component (A) to the catalyst component (B) is preferably a molar ratio when the compound (B-1) is used as the catalyst component (B). Is from 10: 1 to 1: 100, more preferably from 2: 1 to
A ratio of 1:10 is desirable, and when the ratio deviates from the above range, the catalyst cost per unit weight polymer increases,
Not practical. When the compound (B-2) is used, the molar ratio is preferably 1: 1 to 1: 1,000,000,
More preferably, the range of 1:10 to 1: 10,000 is desirable. If the ratio is outside this range, the cost of the catalyst per unit weight of polymer increases, which is not practical. (A)
The molar ratio of the catalyst component to the (B-3) catalyst component is preferably from 10: 1 to 1: 2,000, more preferably from 5: 1 to 1: 1,000, and even more preferably 2: 1. 1 to
A ratio of 1: 500 is desirable. If the ratio deviates from this range, the catalyst cost per unit weight polymer increases, which is not practical. The ratio of the component (A) to the component (B-4) is as follows:
(B-4) With respect to the unit weight [g] of the component clay, etc.,
The transition metal complex of the component (A) is in the range of 0.1 to 1.00 micromol, preferably 1 to 100 micromol.

As the catalyst component (B), (B-
1), (B-2), (B-3), and (B-4) can be used alone or in combination of two or more. The polymerization catalyst of the present invention may contain the above components (A) and (B) as main components, or may contain the components (A), (B) and (C) organoaluminum. It may contain a compound as a main component. here,
(C) As the organoaluminum compound of the component, the general formula ^{_{(VI) R 13 v AlQ 3}} -v ··· (VI) ( wherein, R ¹³ is an alkyl group having 1 to 10 carbon atoms, Q is a hydrogen atom, C1-C20 alkoxyl group, C6-C2
0 represents an aryl group or a halogen atom, and v is a real number of 1 to 3).

Specific examples of the compound represented by the general formula (VI) include trimethylaluminum, triethylaluminum, triisopropylaluminum, triisobutylaluminum, dimethylaluminum chloride, diethylaluminum chloride, methylaluminum dichloride, ethylaluminum dichloride, dimethylaluminum Aluminum fluoride, diisobutylaluminum hydride, diethylaluminum hydride, ethylaluminum sesquichloride and the like. As the organoaluminum compound, a trialkylaluminum compound is preferable, and among them, trimethylaluminum and triisobutylaluminum are preferable. These organoaluminum compounds may be used alone or in combination of two or more. The use ratio of the catalyst component (A) to the catalyst component (C) is preferably 1: 1 to 1: 1,00 in molar ratio.
0, more preferably 1: 5 to 1: 2,000, and still more preferably 1:10 to 1: 1,000.
By using the catalyst component (C), it is possible to improve the polymerization activity per transition metal, if too large, especially with the organoaluminum compound if outside the above range is wasted, in the polymer Left in large quantities,
Also not sufficient catalytic activity can not be obtained if less, in some cases undesirable.

In the present invention, a polymer such as polyethylene or polypropylene, or an inorganic oxide such as silica or alumina may coexist or be brought into contact with or after the contact of each component. When supported on a carrier, it is preferable that the carrier be supported on a polymer, and the particle size of such a carrier polymer is usually 1 to 300 μm, preferably 10 to 200 μm, more preferably 20 to 100 μm.
m. When the particle size is smaller than 1 μm, the fine powder in the polymer increases, and when the particle size exceeds 300 μm, the coarse particles in the polymer increase, resulting in a decrease in bulk density and clogging of a hopper in a manufacturing process. Become. In this case, the specific surface area of the support is from 1 to 1,000 m ² / g, preferably from 50 to 5 m ² / g.
00 m ² / g, and the pore volume is 0.1 to ⁵ m ³ / g, preferably 0.3 to ³ m ³ / g. The contact may be performed in an inert gas such as nitrogen or a hydrocarbon such as pentane, hexane, heptane, toluene, or xylene. The addition or contact of each component can be performed at a polymerization temperature, and it is preferable that the addition or contact be performed at a temperature ranging from -30 ° C to the boiling point of each solvent, particularly from room temperature to the boiling point of the solvent.

The olefin copolymer of the present invention is obtained by using the olefin polymerization catalyst described above,
It can be produced by copolymerizing an olefin and a cyclic olefin in the presence of the olefin polymerization catalyst. In the method for producing an olefin copolymer of the present invention, the organoaluminum compound (C) may be used in contact with the component (A) and / or the component (B) in advance, or the (C) The components may be charged and used in contact with the components (A) and (B). The amount of the component (C) is the same as in the olefin polymerization catalyst. According to the method for producing an olefin polymer of the present invention, copolymerization of olefins and cyclic olefins can be suitably performed using the above-described polymerization catalyst. In addition, homopolymerization of olefins, or copolymerization of olefins with other olefins and / or other monomers (that is, copolymerization of different olefins with each other, polymerization of olefins with other monomers) Copolymerization, or copolymerization of different olefins with other monomers) can also be suitably performed.

The olefin is not particularly limited, but is preferably ethylene or an α-olefin having 3 to 20 carbon atoms. Examples of the α-olefin include propylene, 1-butene, 1-pentene, 1-hexene,
Heptene, 1-octene, 1-nonene, 1-decene, 4
-Phenyl-1-butene, 6-phenyl-1-hexene, 3-methyl-1-butene, 4-methyl-1-pentene, 3-methyl-1-pentene, 4-methyl-1-hexene, 5-methyl 1-hexene, 3,3-dimethyl -
1-pentene, 3,4-dimethyl-1-pentene, 4,
Α-olefins such as 4-dimethyl-1-pentene and vinylcyclohexane, hexafluoropropene, tetrafluoroethylene, 2-fluoropropene, fluoroethylene, 1,1-difluoroethylene, 3-fluoropropene, trifluoroethylene, , 4-dichloro-1
And halogen-substituted α-olefins such as butene. Examples of the cyclic olefin include monocyclic olefins such as cyclopentene and cyclohexene, and norbornene olefins such as norbornene, 5-methylnorbornene, 5-ethylnorbornene, 5-propylnorbornene, 5,6-dimethylnorbornene, and 5-benzylnorbornene. And polycyclic olefins such as 1,4,5,8-dimetano-1,2,3,4,4a, 5,8,8a-octahydronaphthalene. Styrenes include styrene, p-methylstyrene, p-
Ethyl styrene, p-propyl styrene, p-isopropyl styrene, p-butyl styrene, p-tert-butyl styrene, p-phenyl styrene, o-methyl styrene, o-ethyl styrene, o-propyl styrene, o
-Isopropylstyrene, m-methylstyrene, m-ethylstyrene, m-isopropylstyrene, m-butylstyrene, mesitylstyrene, 2,4-dimethylstyrene, 2,5-dimethylstyrene, 3,5-dimethylstyrene and the like Alkylstyrenes, p-methoxystyrene,
Alkoxystyrenes such as o-methoxystyrene and m-methoxystyrene, p-chlorostyrene, m-chlorostyrene, o-chlorostyrene, p-bromostyrene, m
Halogenated styrenes such as -bromostyrene, o-bromostyrene, p-fluorostyrene, m-fluorostyrene, o-fluorostyrene, o-methyl-p-fluorostyrene, furthermore, trimethylsilylstyrene, vinyl benzoate, divinylbenzene And the like. The other olefins described above may be appropriately selected from the olefins.

[0036] In the present invention, the above olefins may be used singly or in combination of two or more. In the copolymerization of olefins and cyclic olefins,
The above olefins and cyclic olefins can be arbitrarily combined. Further, in the present invention, the olefins and other monomers may be copolymerized, and other monomers used in this case, for example, butadiene,
Chain diolefins such as isoprene, 1,4-pentadiene, 1,5-hexadiene, norbornadiene, 5
-Ethylidene norbornene, 5-vinyl norbornene,
Examples include cyclic diolefins such as dicyclopentadiene and unsaturated esters such as ethyl acrylate and methyl methacrylate. In the present invention, ethylene is particularly preferable as the olefin, and norbornene is particularly preferable as the cyclic olefin.

In the present invention, the method for polymerizing olefins is not particularly limited, and any polymerization method such as a slurry polymerization method, a solution polymerization method, a gas phase polymerization method, a bulk polymerization method, and a suspension polymerization method may be employed. Can be. When a polymerization solvent is used, examples of the solvent include hydrocarbons such as benzene, toluene, xylene, n-hexane, n-heptane, cyclohexane, methylene chloride, chloroform, 1,2-dichloroethane, and chlorobenzene, and halogenated solvents. such as hydrocarbons. These may be used alone,
Two or more kinds may be used in combination. Further, the monomers used for the polymerization may be used depending on the type. The amount of the catalyst used in the polymerization reaction is selected so that the amount of the component (A) is usually in the range of 0.5 to 100 micromol, preferably 2 to 25 micromol, per liter of the solvent. This is advantageous in terms of reactor efficiency.

As for the polymerization conditions, the pressure is usually selected from the range of normal pressure to 200 MPa · G. The reaction temperature is usually in the range of -50C to 250C. Examples of the method for adjusting the molecular weight of the polymer include the type and amount of each catalyst component, the selection of the polymerization temperature, and the introduction of hydrogen.
Further, at the time of copolymerizing an olefin and a cyclic olefin in the present invention, a prepolymerization can be carried out using the above catalyst. This prepolymerization can be carried out by bringing a small amount of olefin into contact with the catalyst, and the reaction temperature in this case is -20 to 100C, preferably -10 to 70C, and particularly preferably 0 to 50C. As a solvent used in the prepolymerization, an inert hydrocarbon, an aliphatic hydrocarbon, an aromatic hydrocarbon, or a monomer is used, and an aliphatic hydrocarbon is particularly preferable. This prepolymerization can also be performed without a solvent. Further, the prepolymerized product is preferably subjected to an intrinsic viscosity [η] (measured at 135 ° C. in decalin) of 0.2 deciliter / g, preferably 0.5 deciliter / g or more. The amount of the prepolymerized product per 1 mmol of the transition metal component in the catalyst is from 1 to 10,000.
g, preferably 10 to 1,000 g.

[0039]

EXAMPLES The present invention will be described in more detail with reference to the following Examples, which should not be construed as limiting the present invention. Example 1 [Synthesis of bis (trimethylsilylmethylcyclopentadienyl) zirconium dichloride] (1) Synthesis of trimethylsilylmethylcyclopentadiene 50 ml (50 mmol) of a solution of cyclopentadienyl sodium salt in tetrahydrofuran under a nitrogen stream.
Was cooled to -78 ° C, and 7.6 ml (51.2 mmol) of iodomethyltrimethylsilane was added dropwise thereto.
After completion of the dropwise addition, the temperature was raised to room temperature, and the mixture was stirred for 8 hours. The solvent was distilled off under reduced pressure, and the residue was extracted with hexane to obtain 7.91 g of trimethylsilylmethylcyclopentadiene (yield: 94.0%). (2) a nitrogen stream of the lithium salt of trimethylsilyl methyl dicyclopentadiene, were dissolved trimethylsilyl methylcyclopentadiene 7.91g of (47.0 mmol) in hexane 200 ml, and cooled to -78 ° C.. To this solution, 30 ml (47.7 mmol) of a hexane solution of n-butyllithium was added dropwise, and the mixture was heated to room temperature and stirred for 8 hours. The supernatant was filtered, and the residue was washed with hexane and the solvent was distilled off under reduced pressure,
4.63 g (29.2 mmol, 62.2% yield) of lithium salt of trimethylsilylmethyldicyclopentadiene were obtained. (3) Synthesis of bis (trimethylsilylmethylcyclopentadienyl) zirconium dichloride In a nitrogen stream, 3.40 g (14.5 mmol) of zirconium tetrachloride was suspended in 50 ml of toluene, and -78 was added.
Cooled to ° C. To this was added 50 ml of a toluene suspension of 4.63 g (29.2 mmol) of a lithium salt of trimethylsilylmethyldicyclopentadiene, and the mixture was heated to room temperature and stirred for 8 hours. The supernatant was filtered, the residue was extracted with dichloromethane, and the solvent was distilled off under reduced pressure. The residue resulting from this distillation was recrystallized from dichloromethane / hexane to give 1.2 g of the desired product as a white solid (yield: 1).
7.8%).

Example 2 (Ethylene / norbornene copolymerization) To a heated and dried 1 liter autoclave, 480 ml of cyclohexane, 200 mmol of norbornene and 1 mmol of methylaluminoxane were added under a nitrogen stream, and the mixture was heated to 90 ° C. And then Example 1
1 micromol of bis (trimethylsilylmethylcyclopentadienyl) zirconium dichloride obtained in the above was added, and then ethylene was introduced and the pressure was increased to 0.68 MPa · G.
Up. In this state, polymerization was performed for 30 minutes. After completion of the reaction, the reaction product was poured into methanol, and the precipitated polymer was separated by filtration, washed with methanol, and then dried by heating under reduced pressure to obtain an ethylene / norbornene copolymer 7.9.
8 g were obtained. Of the ethylene / norbornene copolymer,
The melting point [Tm] measured by DSC was 81.3 ° C., showing one peak, which was confirmed to have a homogeneous composition. The intrinsic viscosity [η] is 1.66 deciliters /
g. In addition, melting point [Tm] and intrinsic viscosity [η]
Was measured by the following method. (The same applies hereinafter.) (1) Melting point [Tm] The temperature was raised from 50 ° C. to 190 ° C. at 200 ° C./min, and
After maintaining at 0 ° C. for 5 minutes, the temperature was lowered to −10 ° C. at a rate of 5 ° C./min, and maintained at −10 ° C. for 5 minutes. Furthermore, the temperature was raised to 190 ° C. at 10 ° C. / min and the peak apex of the melting peak when the melting point [Tm]. As a measuring device, DSC7 manufactured by PerkinElmer was used. (2) Intrinsic viscosity [η] Using a VMR-053 automatic viscometer manufactured by Rigo Co., Ltd.
Measured in decalin at 35 ° C.

Comparative Example 1 The procedure of Example 2 was repeated, except that dicyclopentadienyl zirconium dichloride was used in place of bis (trimethylsilylmethylcyclopentadienyl) zirconium dichloride. Copolymerization was carried out to obtain 5 g of an ethylene / norbornene copolymer. The melting point [Tm] of this ethylene / norbornene copolymer measured by DSC was 69.1 ° C.
At 110 ° C. and at 110 ° C., it was confirmed that the composition had a heterogeneous composition. The intrinsic viscosity [η] is 1.
It was 24 deciliters / g.

[0042]

Industrial Applicability The transition metal compound of the present invention is useful as a catalyst component for copolymerization of olefins and cyclic olefins and is easy to synthesize, and the olefin polymerization catalyst containing the same has a high molecular weight. An olefin / cyclic olefin copolymer having a uniform composition is provided.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI theme coat ゛ (reference) // C07F 7/00 C07F 7/00 A F term (reference) 4H049 VN01 VN06 VP02 VQ05 VQ09 VQ91 VR24 VR32 VU14 VW01 4H050 AA01 AA03 AB40 AB49 WB11 WB21 4J028 AA01A AB01A AC01A AC19A AC20A AC27A AC28A BA00A BA02B BB00A BB01B BC12B BC15B BC25B CA30C EA01 BA02 EB04 EB02 AC01 FA02A01 ACB BC15B BC25B CA30C EA01 EB02 EB04 EB05 EB08 EB09 EB10 EB17 EB18 FA01 FA02 FA03 FA04

Claims (9)

[Claims] 1. A compound of the general formula (I) [Wherein, M represents a transition metal element belonging to Groups 3 to 10 of the periodic table or a lanthanoid series, X represents a σ-binding ligand bonded to M, and when there are a plurality of Xs, a plurality of Xs may be the same. They may be different, and may be crosslinked with a cyclopentadienyl ring or Y. Y represents a Lewis base, and when there are a plurality of Ys, the plurality of Ys may be the same or different and may be cross-linked to a cyclopentadienyl ring or X. q is 1
5 integer, represents [(valence of M) -2], r is 0
Indicates an integer of 3. R ^{1 to} R ⁵ each represent a substituent bonded to a cyclopetadienyl group, and at least one substituent represents a hetero atom-containing group containing an atom other than a carbon atom and a hydrogen atom. Examples of the substituent other than the hetero atom-containing group include a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms. Also, R ^1-
R ⁵ may be the same or different, and may form a ring with an adjacent group. ] The transition metal compound represented by these. 2. The transition metal compound according to claim 1, wherein the hetero atom-containing group in the general formula (I) is a silicon atom-containing substituent or a fluorine atom-containing substituent. 3. The transition metal compound according to claim 2, wherein the silicon atom-containing group in the general formula (I) is a trialkylsilylmethyl group or a triarylsilylmethyl group. 4. The transition metal compound according to claim 1, wherein M in the general formula (I) is a transition metal element belonging to Group 4 of the periodic table. 5. An olefin polymerization catalyst comprising (A) the transition metal compound according to claim 1 and an activation co-catalyst as main components. 6. A compound capable of forming an ionic complex by reacting the activating cocatalyst with the transition metal compound (B) or (A) or a derivative thereof, or a clay, a clay mineral or an ion-exchangeable layer. The olefin polymerization catalyst according to claim 5, which is a compound. 7. A compound capable of forming an ionic complex by reacting the activating co-catalyst with the transition metal compound (B) or (A) or a derivative thereof, or a clay, a clay mineral or an ion-exchangeable layer. The olefin polymerization catalyst according to claim 5, which is a combination of the compound and (C) an organoaluminum compound. 8. An olefin polymer comprising an olefin and a cyclic olefin, obtained using the olefin polymerization catalyst according to claim 5. Description: 9. A method for producing an olefin copolymer, comprising copolymerizing an olefin and a cyclic olefin in the presence of the olefin polymerization catalyst according to any one of claims 5 to 7.