JP2002020414A - Catalyst for aliphatic olefin polymerization and method for polymerization using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To produce an olefin or conjugated diene polymerization catalyst comprising a novel transition metal compound having a coordinatable ligand and to provide a method for polymerizing an olefin or a conjugated diene by using the catalyst. SOLUTION: There are provided a catalyst comprising a combination of (A) a specified transition metal compound with (B9 at least one cocatalyst selected from the group consisting of an organoaluminumoxy compound and an ionic compound, and to provide a method for polymerizing an olefin or a conjugated diene characterized by using the catalyst.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a catalyst for polymerization of an aliphatic olefin comprising a novel transition metal compound and a polymerization method using the same.

[0002]

2. Description of the Related Art Titanium and zirconium complexes having a cyclopentadienyl group having a Lewis basic functional group such as nitrogen or phosphorus as a substituent are known. U.S. Pat. No. 5,563,284 discloses the olefin polymerization performance in combination with an aluminoxane. Also, Organometallics, 1993, Vol. 12, p. 3075 describes as a catalyst for syndiotactic polymerization of styrene.

JP-A-10-53611 discloses an olefin polymerization using a titanium or zirconium metallocene complex having a hydrocarbon substituent containing nitrogen in a cyclopentadienyl ligand and an aluminoxane or an ionic compound as a co-catalyst. A catalyst system is disclosed.

[0004]

SUMMARY OF THE INVENTION The present invention provides a catalyst for the polymerization of an aliphatic olefin comprising a novel transition metal compound having a Lewis basic substituent, and a method for polymerizing an aliphatic olefin using the catalyst. The purpose is to do.

[0005]

Means for Solving the Problems At least one kind selected from the group consisting of (A) a transition metal compound represented by the following formula (1) and (B) an organoaluminum oxy compound, a Lewis acid compound and an ionic compound. And a catalyst for the polymerization of aliphatic olefins comprising:

[0006]

Embedded image (Wherein, M represents a transition metal of Group 4 of the periodic table, R represents a cycloalkadienyl group, and R 1 represents hydrogen or a C 1 to C 24
Q represents a hydrocarbon group having 1 to 24 carbon atoms or a hydrocarbon group having 1 to 24 carbon atoms including a Group 14 element, and E represents an element selected from phosphorus, arsenic, antimony, and bismuth. H represents a hydrogen atom, X represents hydrogen, a halogen, a hydrocarbon group having 1 to 24 carbon atoms, an amino group, an oxyhydrocarbon group, L represents a Lewis base,
n is 1 or 0. )

[0007] The present invention also relates to a process for polymerizing an aliphatic olefin, which comprises using the catalyst described above.

[0008]

DETAILED DESCRIPTION OF THE INVENTION The catalyst of the present invention is selected from the group consisting of (A) a transition metal compound represented by the following formula (1) and (B) an organoaluminum oxy compound, a Lewis acid compound and an ionic compound. At least one co-catalyst.

[0009]

Embedded image (Wherein, M represents a transition metal of Group 4 of the periodic table, R represents a cycloalkadienyl group, and R 1 represents hydrogen or a C 1 to C 24
Q represents a hydrocarbon group having 1 to 24 carbon atoms or a hydrocarbon group having 1 to 24 carbon atoms including a Group 14 element, and E represents an element selected from phosphorus, arsenic, antimony, and bismuth. H represents a hydrogen atom, X represents hydrogen, a halogen, a hydrocarbon group having 1 to 24 carbon atoms, an amino group, an oxyhydrocarbon group, L represents a Lewis base,
n is 1 or 0. )

The transition metal compound (A) is a transition metal of Group 4 of the Periodic Table having a cycloalkadienyl group having a Lewis basic substituent containing a Group 15 element bonded to hydrogen as a ligand. It is a complex having an oxidation number of 4.

In the general formula (1) of the transition metal compound (A), M is a transition metal belonging to Group 4 of the periodic table. For example, titanium (Ti), zirconium (Zr), hafnium (Hf) and the like can be mentioned.

R is a cycloalkadienyl group, for example, a cyclopentadienyl group, a substituted cyclopentadienyl group, an indenyl group, a substituted indenyl group, a fluorenyl group or a substituted fluorenyl group.

R1 is hydrogen or a hydrocarbon group having 1 to 24, preferably 1 to 12 carbon atoms. Examples of the hydrocarbon group include an alkyl group, an allyl group, and a cycloalkyl group. Specifically, methyl, ethyl, propyl, isopropyl, butyl, sec-butyl, t
-Butyl group, pentyl group, hexyl group, octyl group, linear aliphatic hydrocarbon group or branched aliphatic hydrocarbon group such as neopentyl group, phenyl group, tolyl group, naphthyl group, benzyl group, 1-phenylethyl Group, 2-phenylethyl group, 2,6-dimethylphenyl group, 3,4-dimethylphenyl group, 2,6-diisopropylphenyl group,
Aromatic hydrocarbon groups such as 3,5-dimethylphenyl group, 3,5-diisopropylphenyl group, 2,4,6-trimethylphenyl group, and cycloaliphatic hydrocarbon groups such as cyclopentyl group and cyclohexyl group are exemplified. . Further, hydrocarbon groups containing a silicon atom such as a trimethylsilyl group and a bistrimethylsilylmethyl group are also included.

E represents a Group 15 element selected from phosphorus, arsenic, antimony and bismuth.

Q is a carbon atom linking R and E described above.
From 24, preferably from 1 to 12, hydrocarbon radicals;
Or a hydrocarbon group containing a Group 14 element and having 1 to 24, preferably 1 to 12 carbon atoms. As the hydrocarbon group,
Methylene group, ethylidene group, isopropylidene group, vinylidene group, benzylidene group, diphenylmethylene group, cyclohexylidene group, ethylene group, trimethylene group, tetramethylene group, propylene group, ethylethylene group, phenylethylene group, cyclohexylethylene group, Examples include a diphenylethylene group, a triphenylethylene group, a vinylene group, a propenylene group, an ethylvinylene group, a phenylvinylene group, a cyclohexylvinylene group, a cyclohexylene group, a methylcyclohexylene group, and a phenylene group. Examples of the hydrocarbon group containing a Group 14 element include a trimethylsilylmethylene group, a bistrimethylsilylmethylene group, a trimethylsilylethylene group, a bistrimethylsilylethylene group, a dimethylsilylene group, a phenylmethylsilylene group, a diphenylsilylene group, a diethylsilylene group, a dicyclohexylsilylene group, (1,4-butanediyl) silylene group, dimethylgermylene group, diphenylgermylene group, dimethylstannylene group and the like.

X is hydrogen, halogen, having 1 to 2 carbon atoms.
4, preferably 1 to 12 hydrocarbon groups, amino groups and oxyhydrocarbon groups. As the halogen, a chlorine atom,
And a bromine atom. As the hydrocarbon group, those similar to the aforementioned R1 can be mentioned. As the amino group,
Examples include a dimethylamino group, a diethylamino group, a diisopropylamino group, a dibutylamino group, and a dioctylamino group. Examples of the hydrocarbon oxy group include a methoxy group, an ethoxy group, an isopropoxy group, a t-butoxy group,
Phenoxy groups and the like.

L is a Lewis base. Particularly, a Lewis base having no active hydrogen is preferable. For example, diethyl ether, ether compounds such as tetrahydrofuran, ketone compounds such as acetone, triethylamine, dimethylaniline, amine compounds such as pyridine, triphenylphosphine, phosphorus compounds such as triethylphosphine,
Examples thereof include sulfur compounds such as dimethyl sulfide, diphenyl sulfide, thiophene, and tetrahydrothiophene. N, which is the coordination number of L, is usually 1 or 0.

Specific examples of the transition metal compound include η ⁵ −
{[2- (methylphosphinoethyl)] cyclopentadienyl} titanium trichloride, η ⁵ -{[2- (phenylphosphinoethyl)] cyclopentadienyl} titanium trichloride, η ⁵ -{[2- (Phenylphosphinoethyl)] cyclopentadienyl} titanium trifluoride, η ⁵ -{[2- (phenylphosphinoethyl)] cyclopentadienyl} titanium tribromide, η ⁵ -{[2- (phenylphosphino Ethyl)] cyclopentadienyl} titanium triiodide, η ⁵
-{[2- (4-methylphenylphosphinoethyl)]
Cyclopentadienyl} titanium trichloride, η ⁵
-{[2- (2-methylphenylphosphinoethyl)]
Cyclopentadienyl} titanium trichloride, η ⁵
-{[2- (3-methylphenylphosphinoethyl)]
Cyclopentadienyl} titanium trichloride, η ⁵
-{[2- (2,6-dimethylphenylphosphinoethyl)] cyclopentadienyl} titanium trichloride, η ⁵ -{[2- (2,4,6-trimethylphenylphosphinoethyl)] cyclopentadi Enyl} titanium trichloride, η ⁵ -{[2- (2,4,6-trimethylphenylphosphinoethyl)] cyclopentadienyl} titanium triisopropoxide, η ^5- {1- [2
-(Methylphosphinoethyl)] indenyl} titanium trichloride, η ^5- {2- [2- (methylphosphinoethyl)] indenyl} titanium trichloride,
η ^5- {1- [2- (phenylphosphinoethyl)] indenyl} titanium trichloride, η ⁵ -{[(methylphosphino) dimethylsilyl] cyclopentadienyl}
Titanium trichloride, η ⁵ -{[(methylphosphino) diphenylsilyl] cyclopentadienyl} titanium trichloride, η ⁵ -{[(phenylphosphino)
Titanium compounds such as dimethylsilyl] cyclopentadienyl} titanium trichloride and η ⁵ -{[(phenylphosphino) methyl] cyclopentadienyl} titanium trichloride.

Η ⁵ -{[2- (phenylphosphinoethyl)] cyclopentadienyl} zirconium trichloride; η ⁵ -{[2- (phenylphosphinoethyl)] cyclopentadienyl} zirconium trifluoro Ride, η ⁵ -{[2- (phenylphosphinoethyl)]
Cyclopentadienyl} zirconium tribromide,
η ⁵ -{[2- (phenylphosphinoethyl)] cyclopentadienyl} zirconium triiodide, η ^5-
{[2- (phenylphosphinoethyl)] cyclopentadienyl} (tetrahydrofuran) zirconium trichloride, η ⁵ -{[2- (phenylphosphinoethyl)] cyclopentadienyl} (tetrahydrothiophene) zirconium trichloride, η ⁵ − {[2- (2,
4,6-trimethylphenylphosphinoethyl)] cyclopentadienyl} (tetrahydrothiophene) zirconium trichloride.

Further, η ⁵ -{[2- (phenylphosphinoethyl)] cyclopentadienyl} hafnium trichloride, η ⁵ -{[2- (phenylphosphinoethyl)]
Cyclopentadienyl} hafnium trifluoride,
η ⁵ -{[2- (phenylphosphinoethyl)] cyclopentadienyl} hafnium tribromide, η ⁵ -{[2
-(Phenylphosphinoethyl)] cyclopentadienyl} hafnium triiodide, η ⁵ -{[2- (phenylphosphinoethyl)] cyclopentadienyl} (tetrahydrofuran) hafnium trichloride, η ⁵ −
{[2- (phenylphosphinoethyl)] cyclopentadienyl} (tetrahydrothiophene) hafnium trichloride, η ⁵ -{[2- (2,4,6-trimethylphenylphosphinoethyl)] cyclopentadienyl}
Hafnium compounds such as (tetrahydrothiophene) hafnium trichloride.

In the present invention, at least one selected from the group consisting of (A) the transition metal compound represented by the above formula (1) and (B) an organoaluminum oxy compound, a Lewis acid compound and an ionic compound. Aliphatic olefins can be polymerized using a catalyst system comprising a cocatalyst.

The organoaluminum oxy compound, Lewis acid compound or ionic compound as a cocatalyst can react with the transition metal compound represented by the formula (1) to form a cation complex.

When at least one of the three Xs which are substituents of the transition metal compound is not a hydrocarbon group, an organometallic compound is used in advance as a hydrocarbon agent for the transition metal compound.
It is preferable that at least one of X is substituted with a hydrocarbon group. It is particularly preferable to use an organic metal compound in combination with a catalyst component as a trapping agent for a polymerization solvent, water in a reaction gas, and other catalyst poisons.

Examples of the organometallic compound include organomagnesium, organolithium and organoaluminum, of which organoaluminum is preferred. Examples of the organoaluminum compound include trialkylaluminum, dialkylaluminum halide, sesquialkylaluminum halide, alkenylaluminum, dialkylaluminum hydride, and sesquialkylaluminum hydride.

Specific examples include trialkylaluminums such as trimethylaluminum, triethylaluminum, triisobutylaluminum, trihexylaluminum, trioctylaluminum and tridecylaluminum.

Furthermore, organic aluminum halides such as dialkylaluminum chlorides such as dimethylaluminum chloride and diethylaluminum chloride, sesquiethylaluminum chloride, ethylaluminum dichloride and the like, diethylaluminum hydride, diisobutylaluminum hydride and sesquiethylaluminum hydride Also included are organoaluminum hydride compounds.

The organoaluminum oxy compound or alumoxane is obtained by contacting an organoaluminum compound with a condensing agent, and is represented by the following general formula (-Al (R '') O-) n Chain aluminoxane,
Alternatively, a cyclic aluminoxane can be used. (R ″ is a hydrocarbon group having 1 to 10 carbon atoms, including those partially substituted with halogen atoms and / or alkoxy groups. N is the degree of polymerization and is 5 or more, preferably 10 or more. ).
Examples of R ″ include a methyl, ethyl, propyl, and isobutyl group, and a methyl group is preferable. Examples of the organoaluminum compound used as a raw material of the aluminoxane include trialkylaluminums such as trimethylaluminum, triethylaluminum, and triisobutylaluminum, and mixtures thereof.

Among them, alumoxane using a mixture of trimethylaluminum and tributylaluminum as a raw material can be preferably used.

Examples of the condensing agent include water as a typical one. In addition, any condensing agent capable of condensing the trialkylaluminum, for example, adsorbed water of an inorganic substance, crystallization water of an inorganic salt, Diols and the like.

Examples of the Lewis acid compound include a fluorine compound of boron or aluminum, triphenylborane, tris (monofluorophenyl) borane or aluminum, tris (difluorophenyl) borane or aluminum, tris (trifluorophenyl) borane or aluminum, Tris (tetrafluorophenyl) borane or aluminum, tris (pentafluorophenyl) borane or aluminum, and the like can be given. The Lewis acid compound in the present invention is capable of generating and stabilizing a cation of a transition metal compound by removing an anionic ligand other than a cycloalkadienyl group from a neutral transition metal compound.

Examples of the ionic compound include an ionic compound of a non-coordinating anion and a cation. Examples of the anion include a bulky non-coordinating anion well known in a transition metal group 4 metallocene catalyst system of the periodic table. For example, tetrakis (pentafluorophenyl) borate, tetrakis (tetrafluorophenyl) borate,
Tetrakis (trifluorophenyl) borate, tetrakis (difluorophenyl) borate, tetrakis (monofluorophenyl) borate, tetraphenylborate, tetra (tolyl) borate, tetra (xylyl)
Borate, pentafluorophenyl (triphenyl) borate, tris (pentafluorophenyl) phenyl borate, and aluminates thereof. Further, tridecahydride-7,8-dicarboundecaborate, tetrafluoroborate, hexafluorophosphate and the like can also be mentioned.

On the other hand, examples of the cation include a carbonium cation, an oxonium cation, an ammonium cation, a phosphonium cation, a cycloheptatrienyl cation (tropylium), and a cation having a transition metal such as a ferrocenium cation. .

Specific examples of the carbonium cation include:
Examples include trisubstituted carbonium cations such as triphenylcarbonium cation and trisubstituted phenylcarbonium cation. Specific examples of the tri-substituted phenylcarbonium cation include tri (methylphenyl)
Examples thereof include a carbonium cation and a tris (dimethylphenyl) carbonium cation.

Specific examples of the ammonium cation include:
Trialkylammonium cations such as trimethylammonium cation, triethylammonium cation, tripropylammonium cation, tributylammonium cation, tri (n-butyl) ammonium cation, N, N-dimethylanilinium cation, N, N-diethylanilinium cation, Examples include N, N-dialkylanilinium cations such as N, N-2,4,6-pentamethylanilinium cation, dialkylammonium cations such as di (isopropyl) ammonium cation and dicyclohexylammonium cation.

Specific examples of the phosphonium cation include:
Examples include triarylphosphonium cations such as triphenylphosphonium cation, tri (methylphenyl) phosphonium cation, and tri (dimethylphenyl) phosphonium cation.

As the ionic compound, those arbitrarily selected and combined from the non-coordinating anions and cations exemplified above can be preferably used.

Specific examples of the ionic compound include triphenylcarbonium tetrakis (pentafluorophenyl) borate, triphenylcarbonium tetra (fluorophenyl) borate, N, N-dimethylanilinium tetrakis (pentafluorophenyl) borate, One,
Preferred is 1'-dimethylferrocenium tetrakis (pentafluorophenyl) borate. The ionic compounds may be used alone or in combination of two or more.

In the present invention, the transition metal compound and / or
Alternatively, the cocatalyst can be used by being supported on an inorganic compound or an organic polymer compound. As the inorganic compound, inorganic oxides, inorganic chlorides and inorganic hydroxides are preferable, and those containing a small amount of carbonate and sulfate can also be used. Particularly preferred are inorganic oxides, such as silica, alumina, magnesia, titania, zirconia, and calcia. These inorganic oxides have an average particle size of 5
Porous fine particles having a specific surface area of ² to 800 m ² / g are preferable, and can be used after being heat-treated at, for example, 100 to 800 ° C. As the organic polymer compound of the carrier,
Those having a functional group such as an aromatic ring, a substituted aromatic ring, or a hydroxy group, a carboxyl group, an ester group, or a halogen atom in a side chain are preferable. Specific examples thereof include α-olefin homopolymers, α-olefin copolymers, acrylic acid, methacrylic acid, vinyl chloride, vinyl alcohol, styrene, divinyl benzene, and the like having the functional group by chemical modification of polyethylene, polypropylene, polybutene, and the like. Examples include polymers, copolymers, and chemically modified products thereof. As these organic polymer compounds, spherical fine particles having an average particle diameter of 5 to 250 μ are used.

The catalyst of the present invention can be employed in any polymerization method of a gas phase method, a slurry method, and a solution method. In the gas phase method, for example, a catalyst in which an organoaluminum compound and / or a cocatalyst and a transition metal compound are supported on the carrier is prepared, and the organoaluminum compound and / or monomer gas is mixed in a stirred or fluidized bed type gas phase polymerization tank. The polymerization can be carried out by contact.

The above gas phase polymerization is usually carried out at a temperature of 20 to 10
0 ° C., time 20-360 minutes, polymerization pressure is normal pressure to 5.1MP
It is performed under the condition of a. In the slurry method and the solution method, for example, a cocatalyst and a transition metal compound are added to an inert hydrocarbon solvent in which an organoaluminum compound and / or a monomer are dissolved, or a pre-contacted one is added to carry out polymerization. It can be carried out. As the usual polymerization conditions, the temperature is 20 to 250 ° C., the time is 1 to 120 minutes, and the polymerization pressure is normal pressure to 15.3 MPa.

As the inert hydrocarbon solvent, propane,
Butane, 2-butene, isobutene, pentane, pentene, cyclopentene, hexane, 2-hexene, heptane, cyclohexane, cyclohexene, benzene, toluene and the like.

In the case of an organoaluminum oxy compound, the amount of the cocatalyst used for the transition metal compound is Al /
Transition metal atom ratio of 10 to 10,000, preferably 50 to
5000. In the case of a Lewis acid compound or an ionic compound, it is preferably about 1 to 10 times the transition metal compound. The amount of the organic aluminum compound used in combination is
Al / transition metal atomic ratio of 1 to 5000, preferably 5 to
1000.

In any of the above polymerization methods, hydrogen can be used as a molecular weight regulator. Further, prior to the main polymerization of the aliphatic olefin, the activity can be enhanced by using a preliminarily polymerized aliphatic olefin according to the above-mentioned various polymerization methods as a catalyst. The prepolymerization is carried out, for example, in a slurry method in an inert hydrocarbon solvent, usually at 5 to 80 ° C. for 5 to 60 minutes, and the aliphatic olefin polymer is converted to 1 per milligram atom of transition metal of the catalyst.
１００100 g can be obtained.

Specific examples of the aliphatic olefin in the present invention include acyclic monoolefins such as ethylene, propylene, butene-1, 4-methylpentene-1, hexene-1, and octene-1, cyclopentene, cyclohexene, and the like.
Cyclic monoolefins such as norbornene, 1,3-butadiene, isoprene, 1,3-pentadiene, 2-methyl-1,3-pentadiene, 3-methyl-1,3-pentadiene, 2,3-dimethylbutadiene, cyclopentadiene , 2,4-hexadiene, 2,3-dimethyl-
1,3-pentadiene, 1,2,3-trimethylpentadiene, 1,3-cyclohexadiene, 1,3-cyclooctadiene, 1-phenyl-1,3-butadiene, 2
Conjugated dienes such as -phenyl-1,3-butadiene and 1,4-diphenyl-1,3-butadiene; Further, in the polymerization of the aliphatic olefin, a small amount of a non-conjugated diolefin such as dicyclopentadiene, 5-ethylidene-2-norbornene, arene, 1,2-butadiene or 1,5-hexadiene can be further polymerized. .

The polymerization of the aliphatic olefin in the present invention may be a homopolymerization or a copolymerization of the aliphatic olefin. As the copolymerization, for example, ethylene and
Copolymerization with an olefin such as propylene is exemplified.

[0046]

The present invention will be described below more specifically with reference to examples and comparative examples. The present invention is not limited to only these examples. In the examples, “polymerization activity” is obtained by dividing the polymer yield (g) per 1 mmol of transition metal of the transition metal compound used in the polymerization reaction by the polymerization time.

Example 1 [Polymerization of ethylene] Toluene 2
Methylalumoxane (M made by Tosoh Akzo Co., Ltd.)
10 mmol of MAO) was added as a toluene solution, and the solution was kept at 40 ° C. while flowing ethylene gas (1 L / min.). 10 μmol of η ⁵ -{[2- (2,4,6-trimethylphenylphosphino) ethyl] cyclopentadienyl} titanium triisopropoxide was added as a toluene solution, and polymerization was carried out for 60 minutes. The polymerization was stopped with an ethanol solution containing HCl, filtered and dried to obtain a white ethylene polymer. Table 1 shows the results.

Example 2 [Ethylene-propylene copolymerization] Instead of ethylene gas, an ethylene-propylene mixed gas (ethylene / propylene = 3/1) was used at 1 L / min.
A white polymer was obtained by performing the same operation as in Example 1 except that the mixture was passed at a flow rate of. Table 1 shows the results.

Example 3 [Polymerization of ethylene] Other than using η ⁵ -{[2- (2,4,6-trimethylphenyl) phosphinoethyl] cyclopentadienyl} (tetrahydrothiophene) zirconium trichloride as a catalyst Was polymerized in the same manner as in Example 1 to obtain a white ethylene polymer. Table 1 shows the results.

Example 4 [Ethylene-propylene copolymerization] Instead of ethylene gas, an ethylene-propylene mixed gas (ethylene / propylene = 3/1) was used at 1 L / min.
The same operation as in Example 3 was carried out, except that the mixture was flowed at a flow rate of, to obtain a white polymer. Table 1 shows the results.

Example 5 [Polymerization of ethylene]
Polymerization was carried out in the same manner as in Example 1 except that ⁵ -{{2- (2,4,6-trimethylphenyl) phosphinoethyl] cyclopentadienyl} (tetrahydrothiophene) hafnium trichloride was used. A polymer was obtained. Table 1 shows the results.

Example 6 [Ethylene-propylene copolymerization] Instead of ethylene gas, an ethylene-propylene mixed gas (ethylene / propylene = 3/1) was used at 1 L / min.
The same operation as in Example 5 was carried out except that the mixture was flowed at a flow rate of, to obtain a white polymer. Table 1 shows the results.

Example 7 [Polymerization of ethylene] Instead of methylalumoxane, 1 mmol of triethylaluminum was used.
Was added as a toluene solution, and then ethylene polymerization was carried out in the same manner as in Example 5, except that 15 μmol of triphenylcarbenium tetrakis (pentafluorophenyl) borate was further added as a toluene solution. Table 2 shows the results
Shown in

Example 8 [Ethylene-propylene copolymerization] Instead of ethylene gas, an ethylene-propylene mixed gas (ethylene / propylene = 3/1) was used at 1 L / min.
A white polymer was obtained by performing the same operation as in Example 7 except that the mixture was passed at a flow rate of. Table 2 shows the results.

[0055]

[Table 1]

[0056]

[Table 2]

[0057]

The transition metal compound of the present invention has high activity as a catalyst for the polymerization of aliphatic olefins.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroshi Nakazawa 1-3-1 Kagamiyama, Higashihiroshima City, Hiroshima Pref. BC17B BC19B BC25B BC27B CA24A CA24B CA25A CA25B CA27A CA27B CA28A CA28B CA29A CA29B CB08A CB08B CB09A CB09B DA01 DA02 DA03 DA05 EB02 EB03 EB04 EB05 EB06 EB09 EB10 EB13 FA04 EB14 FA04

Claims (2)

[Claims] (A) a transition metal compound represented by the following formula (1) and (B) at least one cocatalyst selected from the group consisting of an organoaluminum oxy compound, a Lewis acid compound and an ionic compound; An aliphatic olefin polymerization catalyst comprising: Embedded image (Wherein, M represents a transition metal of Group 4 of the periodic table, R represents a cycloalkadienyl group, and R 1 represents hydrogen or a group having 1 to 24 carbon atoms.
Q represents a hydrocarbon group having 1 to 24 carbon atoms or a hydrocarbon group having 1 to 24 carbon atoms including a Group 14 element, and E represents an element selected from phosphorus, arsenic, antimony, and bismuth. H represents a hydrogen atom, X represents hydrogen, a halogen, a hydrocarbon group having 1 to 24 carbon atoms, an amino group, an oxyhydrocarbon group, L represents a Lewis base,
n is 1 or 0. ) 2. A method for polymerizing an aliphatic olefin, comprising using the catalyst according to claim 1.