JP3425719B2 - Ethylene / α-olefin copolymer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [0001] The present invention relates to an ethylene / α-olefin
For more details on ethylene copolymers,
Superior in transparency and mechanical strength compared to copolymers
Ethylene that can produce a transparent film and has excellent moldability
-It relates to an α-olefin copolymer. [0002] BACKGROUND OF THE INVENTION Ethylene-based copolymers
It is formed by a shaping method and is used for various purposes.
Ethylene copolymers are required depending on the molding method and application.
The characteristics to be obtained are different. For example, inflation
When trying to mold LUM at high speed,
For stable high-speed molding without cracking
Is a melt-based polymer for its molecular weight as an ethylene copolymer.
Must select a material with a large solution (melt tension).
No. A similar property is sag or
To prevent tearing or in T-die molding
Necessary to minimize width drop. [0003] Ziegler type catalysts, especially titanium-based catalysts
Melt Tension of Ethylene Polymer Obtained Using Catalyst
(Melt tension) and expansion ratio (die-well ratio)
Japanese Patent Application Laid-Open No. 56-90810 discloses a method for improving the moldability.
Or Japanese Patent Application Laid-Open No. 60-106806.
Proposed. However, it is generally obtained using a titanium catalyst.
Ethylene polymers, especially low-density ethylene copolymers
The body has a wide composition distribution, and molded bodies such as films are solid.
There was a problem that there was. [0004] Further, it is produced using a Ziegler type catalyst.
Of ethene-based polymers using chromium-based catalysts
The resulting ethylene-based polymer has a relatively high melt tension.
High, but has the disadvantage of poor thermal stability. This is
Chain ends of ethylene polymers produced using rom-based catalysts
It is considered that the ends are likely to be unsaturated bonds. Among Ziegler type catalyst systems, metallocene catalysts
In the ethylene polymer obtained using the solvent system, the composition distribution
Molded products such as films are less sticky
It is known to have advantages. However, for example
JP-A-60-35007 discloses cyclopentadiene.
A zirconocene compound containing a phenyl derivative as a ligand
The ethylene-based polymer obtained by using as a medium is one molecule equivalent.
And that it contains one terminal unsaturated bond.
Like the ethylene polymer obtained using a chromium catalyst,
It is expected that thermal stability is poor. For this reason, if the melt tension is high,
Good stability, excellent mechanical strength, and narrow composition distribution
If an ethylene copolymer appears,
The value is extremely large. [0007] SUMMARY OF THE INVENTION The present invention has been made in view of the above situation.
It has excellent moldability, transparency, and mechanical strength.
Ethylene-α- that can produce excellent films
It is intended to provide an olefin copolymer. [0008] SUMMARY OF THE INVENTION The first ethylene α-ole according to the present invention
The fin copolymer is (A) an organic aluminum oxy compound;(B) From a transition metal compound represented by the following general formula [I]
At least one selected When, ML ¹ _X … [I] (Where M is a transition metal source selected from Group IVB of the periodic table)
Child and L ¹ Is trans A ligand that coordinates to a transfer metal atom M
And at least two of these Child L ¹ Is a shik
Lopentadienyl group, methylcyclopentadienyl group,
Etch Rucyclopentadienyl group, or 3 to 10 carbon atoms
Selected from hydrocarbon groups Having at least one group
A substituted cyclopentadienyl group, ) Cyclope
Ligands other than antadienyl groups L ¹ Has 1 to 12 carbon atoms
hydrocarbon Group, alkoxy group, aryloxy group, trial
Kirsilyl group, halogen atom Or a hydrogen atom, X
Is the valence of the transition metal M. ) The following general formula [II]
At least one selected from transition metal compounds ML ^Two _X … [II] (Where M is a transition metal source selected from Group IVB of the periodic table)
Child and L ^Two Is trans A ligand that coordinates to a transfer metal atom
And at least two of these ligands L ^Two Is
Only two or three substituents selected from
Have A substituted cyclopentadienyl group,
Arrangements other than pentadienyl groups Ligand L ^Two Has 1 to 12 carbon atoms
Hydrocarbon group, alkoxy group, aryloxy group ,Thoria
A rusilsilyl group, a halogen atom or a hydrogen atom,
X is transition gold The valence of the group atom M. ) Consisting of less
And two kinds of ligands having a cyclopentadienyl skeleton
Group IV transition metal compounds Olefi including
In the presence of a polymerization catalyst, ethylene and 3-20 carbon atoms
copolymers obtained by copolymerizing α-olefins
A polymer, (I) Density is 0.850 to 0.980 g / cm^ThreeRange
In (Ii) Melt flow at 190 ° C. and 2.16 kg load
-Rate (MFR) in the range of 0.01 to 200 g / 10 min
In the box, (Iii) Melt tension at 190 ° C. (MT
(G)) and the melt flow rate (MFR) MT> 2.2 × MFR^-0.84 Satisfies the relationship indicated by (Iv) The shear stress at 190 ° C. of the molten copolymer is 2.
4 × 10⁶dyne / cm^TwoDefined by shear rate when reaching
Liquidity index (FI (1 / second)) and melt
Flow rate (MFR) FI <150 × MFR Is satisfied. [0009] [0010] Such ethylene / α-olefin copolymers
Coalescence is excellent in moldability, and the obtained film is mechanical
Excellent strength and excellent transparency. [0012] DETAILED DESCRIPTION OF THE INVENTION The ethylene / α according to the present invention will now be described.
-The olefin copolymer will be specifically described. [0013] The first and second ethylene.
α-Olefin copolymer is composed of ethylene and 3 to 2 carbon atoms.
It is a random copolymer with 0 α-olefin. Etch
Α-ole having 3 to 20 carbon atoms used for copolymerization with
Specifically as fins, for example, propylene, 1-butene
1-pentene, 1-hexene, 4-methyl-1-pentene, 1
-Octene, 1-decene, 1-dodecene, 1-tetradecene, 1
-Hexadecene, 1-octadecene, 1-eicosene, etc.
No. [0014] The first and second ethylene.
In the α-olefin copolymer, a structure derived from ethylene
The composition unit is 50 to 100% by weight, preferably 55 to 99% by weight.
Wt%, more preferably 65-98 wt%, most preferred
Or 70 to 96% by weight, and having 3 to 20 carbon atoms.
Structural unit derived from α-olefin is 0 to 50 weight
%, Preferably 1 to 45% by weight, more preferably 2 to 3% by weight.
It is present in an amount of 5% by weight, particularly preferably 4 to 30% by weight.
Is desirable. Composition of ethylene / α-olefin copolymer
Is about 200 mg of copolymer in a 10 mmφ sample tube.
Dissolve the body uniformly in 1 ml of hexachlorobutadiene
Sample¹³The C-NMR spectrum was measured at a measurement temperature of 120.
° C, measurement frequency 25.05 MHz, spectrum width 1500
Hz, pulse repetition time 4.2 sec., Pulse width 6 μsec.
It is determined by measuring under the measurement conditions of The first ethylene-α-olefin according to the present invention
The vinyl copolymer has properties as shown in the following (i) to (iv).
It is preferable to have the following (i) to (ix)
It is particularly preferable to have such characteristics. The present invention
The second ethylene / α-olefin copolymer according to
Having the characteristics shown in the above (i) to (vi)
It preferably has the following characteristics (i) to (ix)
Is particularly preferred. (I) The density (d) is 0.850 to 0.98
0 g / cm^Three, Preferably 0.880 to 0.960 g / c
m^Three, More preferably 0.890 to 0.935 g / cm.^Three,
Most preferably 0.905-0.930 g / cm^ThreeRange
Is desirable. The density (d) is 2.
When measuring melt flow rate (MFR) with 16kg load
The strand obtained in (1) is heat-treated at 120 ° C. for 1 hour,
After slowly cooling to room temperature over time, measure with a density gradient tube.
You. (Ii) The melt flow rate (MFR) is
0.01 to 200 g / 10 min, preferably 0.05 to 50 g
g / 10 min, more preferably 0.1 to 10 g / 10 min.
It is desirable to be within the range. The melt flow rate (MFR) is
190 ° C, 2.16kg load according to ASTM D1238-65T
Measured under heavy conditions. (Iii) Melt tension (MT (g)) and melt flow
What is the rate (MFR) MT> 2.2 × MFR^-0.84 Preferably 8.0 × MFR^-0.84> MT> 2.3 × MFR^-0.84 More preferably 7.5 × MFR^-0.84> MT> 2.5 × MFR^-0.84 It is desirable to satisfy the relationship shown by. Ethylene α-O having such properties
Lefin copolymer has high melt tension (MT)
Therefore, the moldability is good. In addition, melt tension
(MT (g)) is to spread the molten polymer at a constant speed.
It is determined by measuring the stress when stretched. sand
In other words, the resulting polymer powder is melted in the usual manner and then pelletized.
To make a measurement sample, manufactured by Toyo Seiki Seisaku-sho, MT measurement
Resin temperature 190 ° C, extrusion speed 15mm /
Min, winding speed 10-20m / min, nozzle diameter 2.09m
The measurement was performed under conditions of mφ and a nozzle length of 8 mm. Pelletizing
When the ethylene / α-olefin copolymer is
Tri (2,4-di-t-butylphenyl) as a secondary antioxidant
F) 0.05% by weight of phosphate as heat stabilizer
N-octadecyl-3- (4'-hydroxy-3 ', 5'-di-t-butyl
0.1% by weight of tylphenyl) propionate, hydrochloric acid absorption
0.05% by weight of calcium stearate
I combined. (Iv) Shear stress at 190 ° C. is 2.4.
× 10⁶dyne / cm^TwoDefined by the shear rate at which
Liquidity index (FI (1 / second)) and melt flow
Low rate (MFR) FI <150 × MFR Preferably FI <140 × MFR More preferably, FI <130 × MFR It is desirable to satisfy the relationship shown by. The flow index (FI) is
While changing the speed, extrude the resin from the capillary and
Is determined by measuring the stress at the time. Sand
In addition, using a sample similar to the MT measurement, manufactured by Toyo Seiki Seisakusho,
Using a capillary flow property tester, resin temperature 190 ° C, shear
5 × 10 stress range^Four~ 3 × 10⁶dyne / cm^TwoAbout
Measured. The MFR of the resin to be measured (g / 10 minutes)
And the diameter of the nozzle is changed as follows. 0.5 mm when MFR> 20 1.0mm when 20 ≧ MFR> 3 2.0 mm when 3 ≧ MFR> 0.8 3.0mm when 0.8 ≧ MFR (V) Molecular weight distribution measured by GPC (Mw
/ Mn, where Mw: weight average molecular weight, Mn: number average
(Amount of particles) is preferably in the range of 1.5 to 4. What
The molecular weight distribution (Mw / Mn) is GPC manufactured by Millipore.
It measured as follows using -150C. The separation column is TSK GNH HT.
The column size is 72 mm in diameter and 600 mm in length.
The column temperature was 140 ° C and the mobile phase was o-dichloro
Benzene (Wako Pure Chemical Industries) and BH as an antioxidant
1.0 ml / min using 0.025% by weight of T (Takeda Pharmaceutical)
To adjust the sample concentration to 0.1% by weight.
Is 500 microliters and differential refraction as detector
A total was used. Standard polystyrene has a molecular weight Mw <10.
00 and Mw> 4 × 10⁶About Tosoh Corporation
No, 1000 <Mw <4 × 10⁶About Pressure
-Chemical Co., Ltd. was used. (Vi) MT / (Mw / Mn) and FI / MF
R and MT / (Mw / Mn)> 0.03 × FI / MFR-3.0 (However, the value of 0.03 × FI / MFR-3.0 is not 0
0 when full) 0.03 × FI / MFR + 1.0> MT / (Mw / Mn)
> 0.03 × FI / MFR-2.8 (However, the value of 0.03 × FI / MFR-2.8 is not 0
0 when it is full) 0.03 × FI / MFR + 0.8> MT / (Mw / Mn)
> 0.03 × FI / MFR-2.5 (However, the value of 0.03 × FI / MFR-2.5 is not 0
Satisfy 0)
Is desirable. It should be noted that as the value of Mw / Mn increases, the MT
Since the value becomes large, the value of Mw / Mn with respect to the value of MT
MT / (Mw / Mn) index to reduce the effect of
Was used. Similarly, the value of FI increases as the value of MFR increases.
The effect of the MFR value on the FI value
The index of FI / MFR was used to eliminate it. (Vii) Using a differential scanning calorimeter (DSC)
Temperature (Tm) at the maximum peak position of the endothermic curve
(° C)) and density (d) Tm <400 × d-250 Preferably, Tm <450 × d-297 More preferably, Tm <500 × d-344. Particularly preferably, Tm <550 × d-391 It is desirable to satisfy the relationship shown by. The measurement was made by a differential scanning calorimeter (DSC).
Temperature at the maximum peak position of the determined endothermic curve (Tm (° C))
Is to pack about 5 mg of the sample into an aluminum pan at 10 ° C / min.
Heat to 0 ° C, hold at 200 ° C for 5 minutes, then 20 ° C
/ Minute to room temperature and then at 10 ° C / minute
From the endothermic curve. Measured by PerkinElmer
Use a DSC-7 type device manufactured by the company. (Viii) n-decane soluble component at 23 ° C.
The mass fraction (W (% by weight)) and the density (d) When MFR ≦ 10 g / 10 minutes, W <80 × exp (−100 (d−0.88)) + 0.1 Preferably, W <60 × exp (−100 (d−0.8
8)) + 0.1 More preferably, W <40 × exp (−100 (d−0.8
8)) + 0.1 When MFR> 10g / 10min W <80 × (MFR-9)^0.26× exp (−100 (d−
0.88)) + 0.1 Satisfies the relationship indicated by. The n of the ethylene / α-olefin copolymer
-Amount of soluble components in decane
(Narrow cloth) was measured by measuring about 3 g of the copolymer with n-decane 450
Dissolve at 145 ° C, cool to 23 ° C, and filter.
To remove the n-decane insoluble part, and remove the n-decane soluble part from the filtrate.
This is done by collecting Measured by a differential scanning calorimeter (DSC)
(Tm) and density at the maximum peak position of the measured endothermic curve
Relationship with (d) and n-decane soluble component fraction (W)
And the density (d) have the relationship described above.
It can be said that the composition distribution of the len-α-olefin copolymer is narrow
You. (Ix) The number of unsaturated bonds present in the molecule is
0.5 or less per 1,000 carbon atoms, and a polymer
Desirably less than one per molecule. In addition, unsatisfied
The quantification of the sum bond is¹³Other than double bond using C-NMR
Signal in the range of 10 to 50 ppm.
Signal and the signal assigned to the double bond, ie, 10
Integration of the area intensity of signals in the range of 5 to 150 ppm
It is determined from the line and is determined from its ratio. The first and second embodiments of the present invention as described above
The ethylene / α-olefin copolymer 2 is, for example, (A) an organic aluminum oxy compound;(B) From a transition metal compound represented by the following general formula [I]
At least one selected When, ML ¹ _X … [I] (Where M is a transition metal source selected from Group IVB of the periodic table)
Child and L ¹ Is trans A ligand that coordinates to a transfer metal atom M
And at least two of these Child L ¹ Is a shik
Lopentadienyl group, methylcyclopentadienyl group,
Etch Rucyclopentadienyl group, or 3 to 10 carbon atoms
Selected from hydrocarbon groups Having at least one group
A substituted cyclopentadienyl group, ) Cyclope
Ligands other than antadienyl groups L ¹ Has 1 to 12 carbon atoms
hydrocarbon Group, alkoxy group, aryloxy group, trial
Kirsilyl group, halogen atom Or a hydrogen atom, X
Is the valence of the transition metal M. ) The following general formula [II]
At least one selected from transition metal compounds ML ^Two _X … [II] (Where M is a transition metal source selected from Group IVB of the periodic table)
Child and L ^Two Is trans A ligand that coordinates to a transfer metal atom
And at least two of these ligands L ^Two Is
Only two or three substituents selected from
Have A substituted cyclopentadienyl group,
Arrangements other than pentadienyl groups Ligand L ^Two Has 1 to 12 carbon atoms
Hydrocarbon group, alkoxy group, aryloxy group ,Thoria
A rusilsilyl group, a halogen atom or a hydrogen atom,
X is transition gold The valence of the group atom M. ) Consisting of less
And two kinds of ligands having a cyclopentadienyl skeleton
Group IV transition metal compounds Olefi including
In the presence of a polymerization catalyst, ethylene and 3-20 carbon atoms
α-olefin and the obtained copolymer have a density of 0.85
0-0.980 g / cm^ThreeCopolymerization so that
(A) as described below.
Organic aluminum oxy compounds, at least two
(B) transition metal compound, (c) carrier, and if necessary
(D) Olef formed from an organoaluminum compound
In the presence of a polymerization catalyst, ethylene and C 3-20
When copolymerized with α-olefin of
Producing Tylene / α-olefin copolymer with high polymerization activity
can do. FIG. 1 shows the olefin used in the present invention.
1 shows a process for preparing a polymerization catalyst. The first and second ethylenic materials according to the present invention are described below.
Catalysts used for the polymerization of α-olefin copolymers
The minutes will be described. First, the organic aluminum oxy compound
The object (a) will be described. The organic aluminum oxide used in the present invention
Compound (a) (hereinafter referred to as “component (a)”
is there. ) Is a conventionally known benzene-soluble aluminoxa.
And Japanese Patent Application Laid-Open No. 2-276807.
Benzene-insoluble organic aluminum as disclosed in
It may be an umoxy compound. The aluminoxane as described above is, for example,
It can be manufactured by the method as described above. (1) Compounds containing adsorbed water or containing water of crystallization
Salts such as magnesium chloride hydrate, copper sulfate hydrate
Material, aluminum sulfate hydrate, nickel sulfate hydrate, salt
To a suspension of a hydrocarbon medium such as cerium iodide hydrate
Organoaluminum compounds such as lithium alkyl aluminum
A method of adding and reacting. (2) Benzene, toluene, ethyl ether
Trialkyl in a medium such as
Water or organic aluminum compounds such as aluminum
A method of applying ice or water vapor. (3) Medium such as decane, benzene, and toluene
Organic aluminum such as trialkyl aluminum in the body
Compounds include dimethyltin oxide and dibutyltinoxy
A method of reacting an organic tin oxide such as oxide. The aluminoxane can be used in a small amount of organic
It may contain a metal component. In addition, the collected
Solvent or unreacted organic aluminum
After the compound has been removed by distillation,
Good. Used in producing aluminoxane
As the organoaluminum compound, specifically, trimethyl
Aluminum, triethyl aluminum, tripropyl
Aluminum, triisopropyl aluminum, tri n-
Butyl aluminum, triisobutyl aluminum,
Sec-butyl aluminum, tri-tert-butyl aluminum
Aluminum, tripentyl aluminum, trihexyl aluminum
, Trioctyl aluminum, tridecyl aluminum
Trialkylaluminums such as aluminum;
Xyl aluminum, tricyclooctyl aluminum
Tricycloalkylaluminum; dimethylal
Minium chloride, diethylaluminum chloride, di
Ethyl aluminum bromide, diisobutyl aluminum
Dialkylaluminum halides such as muchloride;
Ethyl aluminum hydride, diisobutyl aluminum
Dialkylaluminum high such as aluminum hydride
Dride; dimethyl aluminum methoxide, diethyl
Dialkyl aluminum such as aluminum ethoxide
Alkoxide; diethylaluminum phenoxide, etc.
Dialkyl aluminum aryloxide and the like
It is. Of these, trialkyl aluminum
And tricycloalkylaluminum are particularly preferred
No. In addition, as this organoaluminum compound,
General formula (I-C_FourH₉)_xAl_y(C_FiveH_Ten)_z (X, y, z are positive numbers and z ≧ 2x)
Can be used
You. The above-mentioned organoaluminum compound is
Used alone or in combination. Aluminoxane
Solvents used during production include benzene and toluene.
Aromatic hydrocarbons such as butane, xylene, cumene, cymene,
Pentane, hexane, heptane, octane, decane, de
Aliphatic carbonization such as decane, hexadecane and octadecane
Hydrogen, cyclopentane, cyclohexane, cycloocta
Alicyclic hydrocarbons such as
Petroleum fractions such as phosphorus, kerosene, and light oil or the above aromatic coals
Halogenation of hydrocarbons, aliphatic hydrocarbons and alicyclic hydrocarbons
Substances, especially hydrocarbon solvents such as chlorinated products and brominated products.
No. In addition, ethyl ether, tetrahydrof
Ethers such as orchids can also be used. these
Among the solvents, aromatic hydrocarbons are particularly preferred. The benzene insoluble used in the present invention
Organic aluminum oxy compounds are converted to benzene at 60 ° C.
Al component to be dissolved is preferably 10% or less in terms of Al atom.
5% or less, particularly preferably 2% or less.
Insoluble or poorly soluble in Such an organic aluminum oxy compound
Has a solubility in benzene of 100 milligram atoms.
The organic aluminum oxy compound corresponding to Al
After suspending in 0 ml of benzene, stirring at 60 ° C for 6 hours
After mixing, filter the G-5 glass filter with jacket
Use, hot filtration at 60 ° C, separation on filter
The solid part thus obtained is washed four times with 50 ml of benzene at 60 ° C.
The amount of Al atoms present in all filtrates after washing (x
Mmol) (x%). Next, (b) having a cyclopentadienyl skeleton
Of transition metal compounds belonging to Group IV of the periodic table containing a growing ligand
Will be described. (B) Cyclopenta used in the present invention
Transition of Group IV of the periodic table including ligands having a dienyl skeleton
Metal transfer compound (hereinafter sometimes referred to as “component (b)”)
You. ) Is specifically represented by the following formula [I] or [II].
Is a transition metal compound. ML¹ _X     … [I] (Where M is a transition metal source selected from Group IVB of the periodic table)
Child and L¹Is a ligand that coordinates to the transition metal atom M
And at least two of these ligands L¹Is a shik
Lopentadienyl group, methylcyclopentadienyl group,
An ethylcyclopentadienyl group or a carbon number of 3 to 10
Having at least one group selected from hydrocarbon groups of
A substituted cyclopentadienyl group,
Ligands other than antadienyl groups L¹Has 1 to 12 carbon atoms
Hydrocarbon group, alkoxy group, aryloxy group, trial
A silyl group, a halogen atom or a hydrogen atom;
Is the valence of the transition metal M. ) ML^Two _X      … [II] (Where M is a transition metal source selected from Group IVB of the periodic table)
Child and L^TwoIs a ligand that coordinates to the transition metal atom.
And at least two of these ligands L^TwoIs
Only 2 to 5 substituents selected from the group consisting of
A substituted cyclopentadienyl group having
Ligands other than pentadienyl groups L^TwoHas 1 to 12 carbon atoms
Hydrocarbon, alkoxy, aryloxy, tria
A rusilsilyl group, a halogen atom or a hydrogen atom,
X is the valence of the transition metal atom M. ) Below, the above general
The transition metal compound represented by the formula [I] or [II]
Thus, a more specific description will be given. In the above formula [I], M is the same as that of the Periodic Table IV.
A transition metal atom selected from the group B;
Ruconium, titanium or hafnium, preferably
Is zirconium. L¹Is a ligand coordinated to the transition metal atom M
And at least two of these ligands L¹Is
Cyclopentadienyl group, methylcyclopentadienyl
Group, an ethylcyclopentadienyl group, or
At least one selected from hydrocarbon groups having 3 to 10 carbon atoms
A substituted cyclopentadienyl group having various substituents
You. Each of these ligands may be the same or different.
You may. Also, other than (substituted) cyclopentadienyl groups
Ligand L¹Is a hydrocarbon group having 1 to 12 carbon atoms,
Group, aryloxy group, halogen atom, trialkyl
Ryl group or hydrogen atom. The substituted cyclopentadienyl group is substituted
It may have two or more groups, and two or more substituents are each
Each may be the same or different. Substituted cyclopenes
When a tadienyl group has two or more substituents,
At least one substituent is a hydrocarbon group having 3 to 10 carbon atoms.
Other substituents may be methyl, ethyl or carbon.
It is a hydrocarbon group having a prime number of 3 to 10. Specific examples of the hydrocarbon group having 3 to 10 carbon atoms include:
Include an alkyl group, a cycloalkyl group, an aryl group,
Examples include an aralkyl group. More specifically
Represents an n-propyl group, an isopropyl group, an n-butyl group,
Butyl, sec-butyl, t-butyl, pentyl,
Xyl, octyl, 2-ethylhexyl, decyl
Alkyl groups such as cyclopentyl group and cyclohexyl
Cycloalkyl groups such as phenyl groups, tolyl groups, etc.
Aryl such as benzyl and neophyl
A kill group can be exemplified. Of these, an alkyl group is preferable, and
A ropyl group and an n-butyl group are particularly preferred. In the present invention,
As a (substituted) cyclopentadienyl group that coordinates to a metal transfer
Is preferably a substituted cyclopentadienyl group,
Cyclopentadienyl group substituted by three or more alkyl groups
Is more preferable, and a disubstituted cyclopentadienyl group is further preferable.
Preferred are 1,3-substituted cyclopentadienyl groups.
New In the above general formula [I], the transition metal
Other than (substituted) cyclopentadienyl group coordinated to atom M
Ligand L¹Is a hydrocarbon group having 1 to 12 carbon atoms,
Xy group, aryloxy group, halogen atom, trialkyl
It is a silyl group or a hydrogen atom. The hydrocarbon group having 1 to 12 carbon atoms includes
Alkyl group, cycloalkyl group, aryl group, aralkyl
Group, etc., and more specifically, methyl
Group, ethyl group, n-propyl group, isopropyl group, n-butyl
Group, isobutyl group, sec-butyl group, t-butyl group, pen
Tyl, hexyl, octyl, 2-ethylhexyl
An alkyl group such as a benzyl group or a decyl group;
Cycloalkyl group such as clohexyl group; phenyl group,
Aryl groups such as tolyl group; benzyl group, neophyl group
And the like. Examples of the alkoxy group include a methoxy group and an ethoxy group.
Xy, n-propoxy, isopropoxy, n-butoxy
Si, isobutoxy, sec-butoxy, t-butoxy
Group, pentoxy group, hexoxy group, octoxy group, etc.
Examples can be given. Examples of the aryloxy group include a phenoxy group.
And the like. Trialkylsilyl group
Trimethylsilyl, triethylsilyl,
Examples thereof include a phenylsilyl group. Halogen is fluorine, chlorine, bromine,
It is urine. The transition represented by the general formula [I]
As the metal compound, bis (cyclopentadienyl) di
Ruconium dichloride, bis (methylcyclopentadie
Nil) zirconium dichloride, bis (ethylcyclope)
Antadienyl) zirconium dichloride, bis (n-pro
Pyrcyclopentadienyl) zirconium dichloride,
Bis (n-butylcyclopentadienyl) zirconiumdi
Chloride, bis (n-hexylcyclopentadienyl) di
Ruconium dichloride, bis (methyl-n-propylcycl
Lopentadienyl) zirconium dichloride, bis (meth
Tyl-n-butylcyclopentadienyl) zirconiumdi
Chloride, bis (dimethyl-n-butylcyclopentadie
Nil) zirconium dichloride, bis (n-butylcyclo
Pentadienyl) zirconium dibromide, bis (n-butyl
Tylcyclopentadienyl) zirconium methoxychloro
Lido, bis (n-butylcyclopentadienyl) zirconi
Umethoxycyclolide, bis (n-butylcyclopentadi
Enyl) zirconium butoxycyclolide, bis (n-butyl)
Rucyclopentadienyl) zirconium diethoxide,
Bis (n-butylcyclopentadienyl) zirconium
Tyl chloride, bis (n-butylcyclopentadienyl)
Zirconium dimethyl, bis (n-butylcyclopentadi
Enyl) zirconium benzyl chloride, bis (n-butyl)
Rucyclopentadienyl) zirconium dibenzyl, bi
(N-butylcyclopentadienyl) zirconium
Nyl chloride, bis (n-butylcyclopentadienyl)
Zirconium hydride chloride, etc.
You. In the above examples, the cyclopentadienyl ring
Di-substituted includes 1,2- and 1,3-substituted, and tri-substituted
Including 1,2,3- and 1,2,4-substituted products. In the present invention, the above
In such a zirconium compound, zirconium metal
Is replaced with titanium metal or hafnium metal
Metal compounds can be used. These transitions represented by the general formula [I]
Among the metal compounds, bis (n-propylcyclopenta
Dienyl) zirconium dichloride, bis (n-butyl
Clopentadienyl) zirconium dichloride, bis
(1-methyl-3-n-propylcyclopentadienyl) zyl
Conium dichloride, bis (1-methyl-3-n-butylcyclyl)
Lopentadienyl) zirconium dichloride is particularly preferred.
Good. In the above general formula [II], M is a number in the periodic table.
A transition metal atom selected from Group IVB, and specifically,
Zirconium, titanium or hafnium, preferred
Is zirconium. L^TwoIs a ligand coordinated to the transition metal atom M
And at least two of these ligands L^TwoIs
Only 2 to 5 substituents selected from a tyl group and an ethyl group
Substituted cyclopentadienyl groups, each of which is the same
Or different. This substituted cyclopenta
A dienyl group is a substituted cyclopentene having two or more substituents.
A substituted cycle having 2 to 3 substituents, which is a tadienyl group;
And preferably a dipentadienyl group.
More preferably, it is a lopentadienyl group,
Particularly preferred is a substituted cyclopentadienyl group.
In addition, each substituent may be the same or different. In the above formula [II], a transition metal atom
Ligand other than substituted cyclopentadienyl group coordinated to M
L^TwoIs L in the above general formula [I].¹1 to 1 carbon atoms similar to
2 hydrocarbon group, alkoxy group, aryloxy group, halo
Gen atom, trialkylsilyl group or hydrogen atom
You. The transition represented by the general formula [II]
As the metal compound, bis (dimethylcyclopentadie
Nil) zirconium dichloride, bis (diethylcyclo)
Pentadienyl) zirconium dichloride, bis (methyl
Ruethylcyclopentadienyl) zirconium dichloride
Dobis (dimethylethylcyclopentadienyl) zircon
Dichloride, bis (dimethylcyclopentadienyl)
B) zirconium dibromide, bis (dimethylcyclope)
Antadienyl) zirconium methoxychloride, bis
(Dimethylcyclopentadienyl) zirconium ethoxy
Cyclolide, bis (dimethylcyclopentadienyl) di
Ruconium butoxycyclolide, bis (dimethylcyclope
Antadienyl) zirconium diethoxide, bis (dimethyl
Tylcyclopentadienyl) zirconium methyl chloride
De, bis (dimethylcyclopentadienyl) zirconium
Dimethyl, bis (dimethylcyclopentadienyl) di
Ruconium benzyl chloride, bis (dimethylcyclope
Antadienyl) zirconium dibenzyl, bis (dimethyi)
Rucyclopentadienyl) zirconium phenyl chloride
De, bis (dimethylcyclopentadienyl) zirconium
And hydride chloride. In addition, above
In the above illustration, the disubstituted cyclopentadienyl ring is
Includes 1,2- and 1,3-substituted, trisubstituted are 1,2,3- and
Including 1,2,4-substituted products. In the present invention, zircon as described above
In zirconium metal, titanium gold
Group or hafnium metal
Can be used. These transitions represented by the general formula [II]
Among the metal compounds, bis (1,3-dimethylcyclopen
Tadienyl) zirconium dichloride, bis (1,3-die
Tylcyclopentadienyl) zirconium dichloride,
Bis (1-methyl-3-ethylcyclopentadienyl) silyl
Conium dichloride is particularly preferred. In the present invention, (b) the transition metal compound
Selected from the transition metal compounds represented by the general formula [I]
And at least one transition represented by the above general formula [II]
Combined with at least one selected from metal compounds
It is preferable to use them. Specifically, bis (1,3-n-butyl
Tylmethylcyclopentadienyl) zirconium dichloro
Lido and bis (1,3-dimethylcyclopentadienyl) silyl
Combination with conium dichloride, bis (1,3-n-pro
Pyrmethylcyclopentadienyl) zirconium dichloro
Lido and bis (1,3-dimethylcyclopentadienyl) silyl
Combination with conium dichloride, bis (n-butyl
Clopentadienyl) zirconium dichloride and bis
(1,3-dimethylcyclopentadienyl) zirconium di
Combinations with chloride are preferred. The transition metal compound represented by the above general formula [I]
At least one transition metal compound selected from compounds (b-I)
And a transition metal compound represented by the general formula [II] (b-
II) at least one transition metal compound selected from
Has a molar ratio (b-I / b-II) of 99/1 to 50/50, preferably
Preferably 97/3 to 70/30, more preferably 95 /
5 to 75/25, most preferably 90/10 to 80/2
It is desirable to use it in such an amount as to be in the range of 0. Hereinafter, the term “component (b)” will be referred to as
Selected from the transition metal compounds (b-I) represented by the formula [I]
And at least one transition represented by the above general formula [II]
At least one selected from metal compounds (b-II)
In some cases, a transition metal compound catalyst component. The carrier (c) used in the present invention (hereinafter referred to as “
Minutes (c) ". ) Is inorganic or
An organic compound having a particle size of 10 to 300 μm, preferably
Or 20-200 μm granular or particulate solid
The body is used. Of these, porous acids are used as inorganic compounds.
Are preferred, specifically, SiO 2_Two, Al_TwoO_Three, MgO,
ZrO_Two, TiO_Two, B_TwoO_Three, CaO, ZnO, BaO, ThO
_TwoOr a mixture thereof, for example, SiO 2_Two-MgO, SiO
_Two-Al_TwoO_Three, SiO_Two-TiO_Two, SiO_Two-V_TwoO_Five, SiO_Two-C
r_TwoO_Three, SiO_Two-TiO_Two-MgO etc.
You. Among them, SiO_TwoAnd Al_TwoO_ThreeFrom the group consisting of
Those containing at least one selected component as a main component are preferred.
Good. The above inorganic oxide contains a small amount of Na._TwoCO
_Three, K_TwoCO_Three, CaCO_Three, MgCO_Three, Na_TwoSO_Four, Al
_Two(SO_Four)_Three, BaSO_Four, KNO_Three, Mg (NO_Three)_Two, Al (N
O_Three)_Three, Na_TwoO, K_TwoO, Li_TwoCarbonate such as O, sulfate, nitrate
It does not matter even if it contains an acid salt or an oxide component. Such a carrier (c) depends on the kind and the production method.
Although their properties are different, they are preferably used in the present invention.
The carrier has a specific surface area of 50 to 1000 m^Two/ G, preferably
Is 100-700m^Two/ G and a pore volume of 0.3 to
2.5cm^Three/ G is desirable. The carrier is required
100-1000 ° C., preferably 150-70 ° C.
It is used after firing at 0 ° C. In such a carrier (c), the amount of adsorbed water is
Less than 1.0% by weight, preferably less than 0.5% by weight.
Is desirable, and the surface hydroxyl group is preferably 1.0% by weight or more.
1.5 to 4.0% by weight, particularly preferably 2.0 to 3.5% by weight.
% By weight. Here, the amount of water adsorbed on the carrier (c) (% by weight)
And the amount of surface hydroxyl groups (% by weight) are determined as follows:
Can be [Amount of adsorbed water] at a temperature of 200 ° C. under normal pressure and nitrogen flow
The weight loss after drying for an hour is defined as the amount of adsorbed water. [Amount of surface hydroxyl groups] At a temperature of 200 ° C under normal pressure and nitrogen flow
The weight of the carrier obtained by drying for 4 hours at X (g),
The carrier was further calcined at 1000 ° C. for 20 hours.
The weight of the fired product from which the surface hydroxyl groups have disappeared is defined as Y (g),
It is calculated by the following formula. [0074] Surface hydroxyl group content (% by weight) = {(XY) / X} × 100 Further, as a carrier (c) that can be used in the present invention,
Is an organic compound having a particle size in the range of 10 to 300 μm.
Granular or particulate solids can be mentioned. This
These organic compounds include ethylene, propylene, and 1-butyl.
Α- having 2 to 14 carbon atoms such as ten- or 4-methyl-1-pentene
There is a (co) polymer produced mainly from olefins
Is mainly composed of vinylcyclohexane and styrene.
The polymer or copolymer to be formed can be exemplified.
You. The catalyst used in the present invention has the above (a)
Aluminum oxy compounds, at least two (b)
Formed from a transition metal compound and (c) a carrier,
If necessary, (d) using an organoaluminum compound
Good. (D) Organic aluminum optionally used
Compound (hereinafter sometimes referred to as “component (d)”).
You. ) Is represented, for example, by the following general formula [III]
An organic aluminum compound can be illustrated. R¹ _nAlX_3-n  … [III] (Where R¹Is a hydrocarbon group having 1 to 12 carbon atoms, and X
Is a halogen atom or a hydrogen atom, and n is 1 to 3.
You. ) In the general formula [III], R¹Has 1 to 1 carbon atoms
12 hydrocarbon groups such as alkyl groups and cycloalkyl groups
Or an aryl group, specifically, a methyl group,
Tyl group, n-propyl group, isopropyl group, isobutyl
Group, pentyl group, hexyl group, octyl group, cyclopen
Tyl group, cyclohexyl group, phenyl group, tolyl group, etc.
It is. Such an (d) organoaluminum compound
Specific examples include the following compounds
You. Trimethyl aluminum, triethyl aluminum
System, triisopropylaluminum, triisobutyla
Luminium, trioctyl aluminum, tri-2-ethyl
Trialkyl aluminum such as hexyl aluminum
Alkenyl aluminum such as isoprenyl aluminum
Ium; dimethylaluminum chloride, diethylal
Minium chloride, diisopropyl aluminum chloride
, Diisobutylaluminum chloride, dimethylal
Dialkyl aluminum halide such as minium bromide
Do; methyl aluminum sesquichloride, ethyl aluminum
Sesquichloride, isopropyl aluminum
Cychloride, butyl aluminum sesquichloride, ethyl
Alkyl aluminum such as aluminum sesquibromide
Umsesquihalide; methyl aluminum dichloride,
Ethyl aluminum dichloride, isopropyl aluminum
Um dichloride, ethyl aluminum dibromide
Alkyl aluminum dihalide; diethyl aluminum
Hydride, diisobutyl aluminum hydride
Alkyl aluminum hydrides such as Further, (d) an organoaluminum compound
Thus, a compound represented by the following general formula [IV] may be used.
it can. R¹ _nAlY_3-n  … [IV] (Where R¹Is the same as above, and Y is -OR^TwoGroup,-
OSiR^Three _ThreeGroup, -OAlR ^Four _TwoGroup, -NR^Five _TwoGroup, -SiR⁶ _Three
Group or -N (R⁷) AlR⁸ _TwoAnd n is 1-2.
R^Two, R^Three, R^FourAnd R⁸Represents a methyl group, an ethyl group,
Isopropyl, isobutyl, cyclohexyl,
And a R group such as^FiveIs hydrogen atom, methyl group, ethyl
Group, isopropyl group, phenyl group, trimethylsilyl group
And R⁶And R⁷Is a methyl group, an ethyl group, etc.
It is. ) As such organoaluminum compound
Specifically, the following compounds are used. (1) R¹ _nAl (OR^Two)_3-nA compound represented by, for example, di
Methyl aluminum methoxide, diethyl aluminum
Ethoxide, diisobutylaluminum methoxide
Th (2) R¹ _nAl (OSiR^Three _Three)_3-nCompound represented by, for example
If Et_TwoAl (OSi Me_Three), (Iso-Bu)_TwoAl (OSiMe_Three),
(iso-Bu)_TwoAl (OSiEt_Three) Such; (3) R¹ _nAl (OALR^Four _Two)_3-nCompound represented by
For example, Et_TwoAlOAlEt_Two, (Iso-Bu)_TwoAlOAl (iso-Bu)
_TwoSuch; (4) R¹ _nAl (NR^Five _Two)_3-nA compound represented by, for example,
Me_TwoAlNEt_Two, Et_TwoAlNHMe, Me_TwoAlNHEt,
Et_TwoAlN (SiMe_Three)_Two, (Iso-Bu)_TwoAlN (SiMe_Three)_Two What
Which; (5) R¹ _nAl (SiR⁶ _Three)_3-nA compound represented by, for example,
(iso-Bu)_TwoAlSiMe_Three Such; (6) R¹ _nAl (N (R⁷) AlR⁸ _Two)_3-nCompound represented by
Object, eg Et_TwoAlN (Me) AlEt_Two, (Iso-Bu)_TwoAlN
(Et) Al (iso-Bu)_TwoSuch . The compounds represented by the above general formulas [III] and [IV]
Among the organoaluminum compounds represented by the general formula R¹ _ThreeAl,
R¹ _nAl (OR^Two)_3-n, R¹ _nAl (OAlR^Four _Two)_3-nRepresented by
Are preferred, and in particular, R is an isoalkyl group.
Thus, a compound in which n = 2 is preferred. In the present invention, ethylene / α-olefin
In producing the polymer, the component (a) as described above,
Component (b) and component (c), and optionally component (d)
The catalyst prepared by contacting is preferably used
Can be In this case, the contact order of the components (a) to (d)
Is arbitrarily selected, but preferably the component (c) and the component
(A) and mixed contact, and then component (b) is mixed and contacted
And, if necessary, mixing and contacting component (d).
You. The component (b) is composed of two or more components forming the component (b).
After pre-mixing the above transition metal compound, mix with other components
It is preferred to make contact. The contact of the above components (a) to (d) is not
Can be carried out in an active hydrocarbon solvent and used for catalyst preparation
Specific examples of the inert hydrocarbon solvent used include propane.
, Butane, pentane, hexane, heptane, octa
Aliphatic hydrocarbons such as carbohydrate, decane, dodecane and kerosene;
Clopentane, cyclohexane, methylcyclopentane
Alicyclic hydrocarbons such as benzene, toluene, xylene
Aromatic hydrocarbons such as ethylene chloride, chloroben
Halogenated hydrocarbons such as zen, dichloromethane, etc.
May be a mixture thereof. Component (a), component (b) and component
(C) when mixing and contacting the component (d) if necessary
Component (b) is usually 5 × 10 5 per gram of component (c).
^-6~ 5 × 10^-FourMole, preferably 10^-Five~ 2 × 10^-FourMo
And the concentration of component (b) is about 10^-Four~ 2
× 10^-2Mol / liter (solvent), preferably 2 × 10
^-Four-10^-2It is in the range of mol / liter (solvent). component
Source of aluminum of (a) and transition metal in component (b)
The atomic ratio (Al / transition metal) is usually 10 to 500, preferably
20 to 200. Ingredients used as needed
(D) aluminum atom (Al-d) and component (a)
Atomic ratio of luminium atom (Al-a) (Al-d / Al-a)
Is usually in the range of 0.02 to 3, preferably 0.05 to 1.5.
It is an enclosure. Component (a), component (b) and component (c),
Mixing temperature for mixing and contacting component (d) if necessary
Is usually -50 to 150C, preferably -20 to 120.
C. and a contact time of 1 minute to 50 hours, preferably 10 minutes.
Minutes to 25 hours. Olefin polymerization obtained as described above
The catalyst for use (solid catalyst component) consists of component (c)
5 × 10 transition metal atoms derived from (b)^-6~ 5 × 10
^-FourGram atoms, preferably 10^-Five~ 2 × 10^-FourGram Hara
Component (a) per 1 g of component (c)
And 10 aluminum atoms derived from component (d)^-3
~ 5 × 10^-2Gram atoms, preferably 2 × 10^-3~ 2x
10^-2Desirably, it is supported in the amount of gram atoms.
No. In the present invention, ethylene / α-olefin
Olefin polymerization catalysts used in the production of polymers are
Component (a), component (b) and component (c) as described above,
If necessary, pre-weight the olefin in the presence of component (d).
A prepolymerized catalyst obtained by combining them may be used. Extra weight
In this case, the components (a), (b) and
In the presence of (c), if necessary, in the presence of component (d),
By introducing olefins into the active hydrocarbon solvent
It can be carried out. The above components (a) to (c)
It is preferable that the solid catalyst component is formed.
In this case, in addition to the solid catalyst component, component (a) and
And / or component (d) may be added. The olefin used in the prepolymerization is
Ethylene and α-olefin having 3 to 20 carbon atoms
Propylene, 1-butene, 1-pentene, 4-methyl
1-pentene, 1-hexene, 1-octene, 1-decene, 1
-Dodecene, 1-tetradecene, etc.
You. Among these, ethylene or ethylene and heavy
The combination with α-olefin used in the case of
Good. In the prepolymerization, the above component (b) is
Usually 1 in terms of a transition metal atom derived from the component (b).
0^-6~ 2 × 10^-2Mol / l (solvent), preferably
5 × 10^-Five-10^-2Used in moles / liter (solvent)
The component (b) is usually 5 × 10 5 per gram of the component (c).
^-6~ 5 × 10^-FourMole, preferably 10^-Five~ 2 × 10^-FourMo
Used in the amount of oil. Aluminum of component (a) and components
The atomic ratio (Al / transition metal) to the transition metal in (b) is
Usually it is 10-500, preferably 20-200. Must
Aluminum atom of component (d) optionally used
(Al-d) and the aluminum atom (Al-a) of the component (a)
The atomic ratio (Al-d / Al-a) is usually from 0.02 to 3, preferably
In the range of 0.05 to 1.5. The pre-polymerization temperature is preferably from -20 to 80 ° C.
Is from 0 to 60 ° C, and the prepolymerization time is from 0.5 to 10 ° C.
It is 0 hour, preferably about 1 to 50 hours. The prepolymerized catalyst is specifically, for example,
It is prepared as follows. That is, the carrier (component
(C)) is suspended in an inert hydrocarbon. Then,
Organic aluminum oxy compound (component
(A)) is added and reacted for a predetermined time. Then supernatant
And the resulting solid components are resuspended in an inert hydrocarbon
Become A transition metal compound (component (b)) is added into the system.
After reacting for a predetermined time, the supernatant is removed and the solid catalyst is formed.
Get a minute. Subsequently, the organoaluminum compound (component
(D)) to an inert hydrocarbon containing
Adding solid catalyst components and introducing olefins into them
As a result, a prepolymerized catalyst is obtained. Olefin (co) polymerization formed by prepolymerization
The body is 0.1-500 g / g of carrier (c), preferably
Is from 0.2 to 300 g, more preferably from 0.5 to 200 g
Desirably, it is an amount. In addition, the pre-polymerization catalyst
Component (b) per gram of body (c) contains about 5 as a transition metal atom.
× 10^-6~ 5 × 10^-FourGram atoms, preferably 10^-Five~
2 × 10^-FourComponent (a) and gram atoms.
And the aluminum atom (Al) derived from the component (d)
Mol per transition metal atom (M) derived from component (b)
5-200, preferably 10-15, in ratio (Al / M)
It is desirable that the carrier is carried in an amount in the range of 0. The prepolymerization can be carried out in either a batch system or a continuous system.
Can be performed under reduced pressure, normal pressure or increased pressure.
Any of the above can be performed. In the prepolymerization,
The pole measured in decalin at 135 ° C in the presence of hydrogen
The limiting viscosity [η] is in the range of 0.2 to 7 dl / g, preferably
Preparing the prepolymer to be 0.5-5 dl / g
It is desirable. [0092] The first and second ethylene
α-olefin copolymers are, for example,
In the presence of a fin polymerization catalyst, ethylene and C 3 -C 3
20 α-olefins such as propylene, 1-butene, 1
-Pentene, 1-hexene, 4-methyl-1-pentene, 1-octane
Ten, 1-decene, 1-dodecene, 1-tetradecene, 1-hex
Sadecene, 1-octadecene, 1-eicosene copolymerized
Obtained by letting In the present invention, ethylene and α-olefin
Is carried out in the gas phase or in the liquid phase of a slurry.
You. In slurry polymerization, an inert hydrocarbon is used as a solvent.
Or the olefin itself can be used as the solvent.
You. Inert carbon used in slurry polymerization
Specific examples of the hydrogen hydride solvent include propane, butane, and isopropane.
Butane, pentane, hexane, octane, decane, dode
Aliphatic carbonization such as can, hexadecane and octadecane
Hydrogen; cyclopentane, methylcyclopentane, cyclo
Alicyclic hydrocarbons such as hexane and cyclooctane;
Aromatic hydrocarbons such as benzene, toluene and xylene;
Petroleum fractions such as gasoline, kerosene and light oil
You. Among these inert hydrocarbon media, aliphatic hydrocarbons
Preferred are hydrogen, alicyclic hydrocarbons, and petroleum fractions. It is carried out by a slurry polymerization method or a gas phase polymerization method.
In such a case, the above-mentioned catalyst is used as a transition metal in the polymerization reaction system.
The concentration of a genus atom is usually 10^-8-10^-3Gram atom /
Liters, preferably 10^-7-10^-FourGram atom / Li
Preferably, it is used in an amount of torr. In the polymerization, the carrier is supported on a carrier.
Organic aluminum oxy compound (component (a)) and
In addition to the aluminum compound (component (d)),
An unsupported organoaluminum oxy compound and
And / or an organoaluminum compound may be used. this
In some cases, unsupported organoaluminum oxy compound
And / or aluminum derived from organoaluminum compounds
Derived from minium atom (Al) and transition metal compound (b)
The atomic ratio (Al / M) to the transition metal atom (M) is 5
~ 300, preferably 10-200, more preferably 1
It is in the range of 5-150. In the present invention, a slurry polymerization method is carried out.
The polymerization temperature is usually -50 to 100 ° C, preferably
In the range of 0 to 90 ° C.
The polymerization temperature is usually 0 to 120 ° C., preferably 20 ° C.
-100 ° C. The polymerization pressure is usually from normal pressure to 100 kg /
cm^Two, Preferably 2 to 50 kg / cm^TwoUnder pressurized condition
Yes, polymerization can be batch, semi-continuous, or continuous
It can also be done in an equation. Further, the polymerization is carried out in two or more stages under different reaction conditions.
It is also possible to perform it separately. The first and second aspects of the present invention
The second ethylene / α-olefin copolymer according to the present invention
Weathering stabilizer, heat stable, as long as the purpose of
Agent, antistatic agent, anti-slip agent, anti-blocking
Agent, anti-fog agent, lubricant, pigment, dye, nucleating agent, plasticizer, anti-aging
Additives such as blocking agents, hydrochloric acid absorbents, antioxidants, etc. as required
May be blended. [0100] The first and second ethylene.
α-Olefin copolymer is used for ordinary air-cooled inflation.
Molding, air-cooled two-stage cooling inflation molding, high-speed
Flation molding, T-die film molding, water-cooled inflation
The film can be obtained by processing
Can be Film formed in this way
Is excellent in transparency and mechanical strength and has the characteristics of ordinary LLDPE.
Characteristic heat sealing property, hot tack property, heat resistance, good
It has blocking properties and the like. In addition, ethylene
Since the composition distribution of the olefin copolymer is extremely narrow,
There is no stickiness of the LUM surface. Higher melt tension
Excellent bubble stability during inflation molding
You. The first and second ethylene.
Obtained by molding α-olefin copolymer
Films are standard bags, sugar bags, oil packaging bags, water packaging bags
It is suitable for various packaging films and agricultural materials.
In addition, it is bonded to a substrate such as nylon or polyester.
Thus, it can be used as a multilayer film. [0102] The ethylene / α-olefin copolymer of the present invention
Coalescence has high melt tension and excellent moldability
You. From such ethylene / α-olefin copolymer
Can produce films with excellent transparency and mechanical strength.
Can be. [0103] The present invention will be described in more detail with reference to the following examples.
However, the present invention is not limited to these examples.
Not. In the present invention, evaluation of physical properties of the film
Was performed as follows. [Haze (Haze)] Measured according to ASTM-D-1003-61
Was. [Gloss] According to JIS Z8741
Measured. [Film Impact] Pendulum fill made by Toyo Seiki Seisakusho
With a film impact tester (film impact tester)
Specified. [0106] Embodiment 1Production of ethylene / α-olefin copolymer [Preparation of catalyst component] Silica dried at 250 ° C. for 10 hours
5.0 kg were suspended with 80 liters of toluene
Then, it was cooled to 0 ° C. Then, methylaluminoxane
Solution of toluene (Al; 1.33 mol / l) 28.
7 liters were added dropwise over one hour. At this time, the temperature in the system
It was kept at 0 ° C. Continue to react at 0 ° C for 30 minutes, then
Raise the temperature to 95 ° C over 1.5 hours and at that temperature for 20 hours
Reaction. Thereafter, the temperature was lowered to 60 ° C, and the supernatant was decanted.
It was removed by the tation method. The solid component obtained in this manner is
After washing twice with toluene, resuspend with 80 liters of toluene
did. Bis (1,3-n-butylmethylcyclopentene)
Tadienyl) zirconium dichloride in toluene
(Zr; 34.0 millimils / liter) 7.4 liters
And bis (1.3-dimethylcyclopentadienyl) zirco
Solution of toluene dichloride (Zr; 28.1 mm
(Mol / liter) 1.0 liter at 80 ° C for 30 minutes
Then, the mixture was further reacted at 80 ° C. for 2 hours. afterwards,
By removing the supernatant and washing twice with hexane,
Solid catalyst containing 3.6 mg zirconium per gram
I got [Preparation of Preliminary Polymerization Catalyst]
85 liter hex containing isobutylaluminum
To Sun, 0.85 kg of the solid catalyst obtained above and 1-
255 g of hexene was added, and ethylene was added at 35 ° C. for 12 hours.
By performing pre-polymerization, 10 g of solid catalyst per 1 g
A prepolymerized catalyst in which polyethylene was prepolymerized was obtained. This
[Η] of the ethylene polymer was 1.74 dl / g.
Was. [Polymerization] Two liters of internal
Sodium chloride in stainless steel autoclave
(Wako Pure Chemicals special grade) Charge 150g and reduce at 90 ° C for 1 hour
Pressure dried. Then, a mixture of ethylene, 1-butene and hydrogen
Gas (1-butene content; 3.0 mol%, hydrogen content; 0.0
12 mol%), the pressure was returned to normal pressure, and the temperature in the system was reduced to 70 ° C.
did. Next, the solid catalyst adjusted as described above
Is 0.007 mg atom in terms of zirconium atom and
0.7 mmol of triisobutylaluminum
Added to Reave. Thereafter, an ethylene resin having the same composition as described above is used.
Gas mixture of hydrogen, 1-butene and hydrogen, and a total pressure of 8 kg /
cm^TwoThe polymerization was started as -G. 80 ° C immediately
Rose. Thereafter, only the mixed gas was supplied, and the total pressure was increased to 8%.
kg / cm^Two-G, polymerization at 80 ° C for 1.5 hours
Was. After completion of the polymerization, sodium chloride was removed by washing with water.
After removing and washing the remaining polymer with methanol, 80
It dried under reduced pressure at ℃ overnight. As a result, 190 ° C., 2.16
The MFR measured under a kg load is 2.0 g / 10 min.
The density is 0.922 g / cm^ThreeAt 23 ° C
Ethylene and 1-butene with 0.20 wt%
290 g of a polymer were obtained. Melt properties etc. of the obtained copolymer
Are shown in Table 1. [0114] Embodiment 2 Production of ethylene / α-olefin copolymer [Preparation of catalyst component] The amount of the transition metal compound used was as follows.
Solid catalyst component in the same manner as in Example 1 except that
Was adjusted. Bis (1,3-nbutylmethylcyclopentadi
Enyl) zirconium dichloride in toluene solution (Z
r; 34.0 mmol / l); 6.6 liters Bis (1,3-dimethylcyclopentadienyl) zirconium
Toluene solution of mudichloride (Zr; 28.1 mmol)
/ Liter); 2.0 liters [Preparation of prepolymerized catalyst] Obtained in [Preparation of catalyst component] above
Except that a solid catalyst component was used, the same procedure as in Example 1 was repeated.
A polymerization catalyst was obtained. [Polymerization] Obtained in the above [Preparation of prepolymerized catalyst]
The comonomer content is shown in Table 1 using the prepared prepolymerized catalyst.
Except that the MFR was changed in the same manner as in Example 1.
And an ethylene / 1-butene copolymer having different densities. Profit
Table 1 shows the melt properties and the like of the obtained copolymer. [0117] Embodiment 3 Production of ethylene / α-olefin copolymer [Preparation of catalyst component] The amount of the transition metal compound used was as follows.
Solid catalyst component in the same manner as in Example 1 except that
Was adjusted. Bis (1,3-nbutylmethylcyclopentadi
Enyl) zirconium dichloride in toluene solution (Z
r; 34.0 mmol / l); 5.6 liters Bis (1,3-dimethylcyclopentadienyl) zirconium
Toluene solution of mudichloride (Zr; 28.1 mmol)
/ Liter); 2.9 liters [Preparation of prepolymerized catalyst] Obtained in [Preparation of catalyst component] above
Except that a solid catalyst component was used, the same procedure as in Example 1 was repeated.
A polymerization catalyst was obtained. [Polymerization] Obtained in the above [Preparation of prepolymerized catalyst]
The comonomer content is shown in Table 1 using the prepared prepolymerized catalyst.
Except that the MF was changed in the same manner as in Example 1.
An ethylene / 1-butene copolymer having a density different from that of R was obtained.
Table 1 shows the melt properties and the like of the obtained copolymer. [0120] [Example 4] 1-hexene as a comonomer in place of 1-butene
Except that sen was used, ethylene was used in the same manner as in Example 2.
A 1-hexene copolymer was obtained. Melt of the obtained copolymer
The properties are shown in Table 1. [0121] Comparative Example 1 Bis (1,3-
n-butylmethylcyclopentadienyl) zirconiumdi
Using only chloride, the comonomer content is as shown in Table 1.
In the same manner as in Example 1 except that
A 1-butene copolymer was produced. Melting of the obtained copolymer
Table 1 shows the physical properties and the like. [0122] Comparative Example 2 Bis (1,3-
Dimethylcyclopentadienyl) zirconium dichloride
Comonomer content was changed as shown in Table 1 using only
Except that the ethylene / 1-butene was prepared in the same manner as in Example 1.
A copolymer was prepared. Melt properties etc. of the obtained copolymer
Are shown in Table 1. [0123] Comparative Example 3 Bis (1,3-
Dimethylcyclopentadienyl) zirconium dichloride
Comonomer content was changed as shown in Table 1 using only
Except that the ethylene / 1-butene was prepared in the same manner as in Example 1.
A copolymer was prepared. Melt properties etc. of the obtained copolymer
Are shown in Table 1. [0124] [Comparative Example 4] 1-hexene in place of 1-butene as a comonomer
Except that sen was used, ethylene
A 1-hexene copolymer was obtained. Melt of the obtained copolymer
The properties are shown in Table 1. [0125] Production Examples 1-4 Ethylene obtained in Examples 1-4
・ 1-butene copolymer and ethylene / 1-hexene copolymer
Single screw extruder with 20 mmφ · L / D = 26
5mmφ die, lip width 0.7mm, single slit
Air flow = 90 liters / min, extrusion rate using alling
= 9 g / min, blow ratio = 1.8, take-up speed = 2.4 m
/ Min, at a processing temperature of 200 ° C, a 30 μm thick
The film was blown. The resulting film
Table 2 shows the physical properties of the compound. Excellent moldability, optical properties and strength
An excellent blown film was obtained. [0126] [Production Example 5] The ethylene / 1-butene obtained in Comparative Example 1 above
Inflation was carried out in the same manner as in Production Examples 1 to 4 using a copolymer.
Forming a 30μm thick film
Was. Table 2 shows the physical properties of the obtained film. [0127] Production Examples 6 to 8 Ethylene obtained in Comparative Examples 2 to 4 above
・ 1-butene copolymer and ethylene / 1-hexene copolymer
Inflation using the body in the same manner as in Production Examples 1 to 4.
A film having a thickness of 30 μm was formed by molding. Get
Table 2 shows the physical properties of the obtained film. The ratio of MT of the copolymer obtained in Example 1 to MT
The MT of the copolymer obtained in Comparative Example 1 was compared with that of Example 1.
Has better moldability despite higher MFR
You. Further, it can be obtained in Example 2 having the same MFR.
Of the copolymer obtained in Comparative Example 2 and the MT
The MT of the copolymer obtained in Example 3 and the MT of Comparative Example 3
When the MTs of the copolymers obtained were compared, Examples 2 and 3 were more moldable.
(MT). Ethylene / α-olefin copolymer of the present invention
Relationship between body MFR and MT, and conventional ethylene α
Fig. 2 shows the relationship between MFR and MT of olefin copolymer.
Show. Examples in which MFR and density are almost the same
Haze of film formed from copolymer obtained in 2
And molded from the copolymers obtained in Comparative Examples 1, 2, and 3.
Comparing the haze of the film, the weight obtained in Example 2 was
Films formed from coalescing are superior in film transparency
It is. Further, it was obtained in Example 4 having the same MFR.
Haze of film molded from copolymer obtained and comparative example
The haze of the film formed from the copolymer obtained in step 4
By comparison, the copolymer obtained in Example 4 has a lower density.
Despite being high, the transparency of the film is excellent. The catalyst used in Examples 1 to 4 was the same as Comparative Example 1.
Transition metal compound catalyst component in the catalyst component used, and ratio
Transition metal compound catalyst composition in catalyst components used in Comparative Examples 2 to 4
Contains both minutes. By doing so,
Polymerized using a single catalyst component of transition metal compound
MT (formability) is improved compared to coalescence, and inflation
Ethylene-α-
A refin copolymer was obtained. [0134] [Table 1][0135] [Table 2]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory diagram showing a process for preparing an olefin polymerization catalyst used in the present invention. FIG. 2 is a graph showing the relationship between MFR and MT of an ethylene / α-olefin copolymer of the present invention, and the relationship between MFR and MT of a conventional ethylene / α-olefin copolymer.

──────────────────────────────────────────────────続 き Continuation of the front page (72) Inventor Akira Todo 1-2-1, Waki, Waki-machi, Kuga-gun, Yamaguchi Prefecture Inside Mitsui Petrochemical Industry Co., Ltd. (56) References JP-A-60-35006 (JP, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) C08F 4/60-4/70 C08F 10/00-10/14

Claims (1)

(57) Claims: (a) an organoaluminum oxy compound, (b) at least one selected from transition metal compounds represented by the following general formula [I], and ML ¹ _X [I] (wherein M is a transition metal atom selected from Group IVB of the Periodic Table, L ¹ is a ligand coordinated to the transition metal atom M, and at least two of The ligand L ¹ is a cyclopentadienyl group, a methylcyclopentadienyl group,
An ethylcyclopentadienyl group or a carbon number of 3 to 10
Of a substituted cyclopentadienyl group having at least one group selected from a hydrocarbon group, (substituted) ligand L ¹ other than the cyclopentadienyl group is a hydrocarbon group having 1 to 12 carbon atoms, An alkoxy group, an aryloxy group, a trialkylsilyl group, a halogen atom or a hydrogen atom,
Is the valence of the transition metal M. ) At least one selected from transition metal compounds represented by the following general formula [II] and ML ² _X ... [II] (wherein M is a transition metal atom selected from Group IVB of the periodic table; ² is a ligand coordinated to a transition metal atom, and at least two of the ligands L ² are substituted cyclopentadiene having only two or three substituents selected from a methyl group and an ethyl group. And the ligand L ² other than the substituted cyclopentadienyl group has 1 to 12 carbon atoms.
A hydrocarbon group, an alkoxy group, an aryloxy group, a trialkylsilyl group, a halogen atom or a hydrogen atom,
X is the valence of the transition metal atom M. ) In the presence of a catalyst for olefin polymerization containing a transition metal compound of Group IV of the periodic table containing a ligand having at least two kinds of cyclopentadienyl skeletons comprising ethylene and α having 3 to 20 carbon atoms. - a copolymer obtained by copolymerizing an olefin, there (i) a density in the range of ^{0.850~0.980g / cm 3, (ii)} 190 ℃, melt in 2.16kg load The flow rate (MFR) is in the range of 0.01 to 200 g / 10 minutes, and (iii) the melt tension at 190 ° C. (MT
(G)) and the melt flow rate (MFR) satisfy the relationship expressed by MT> 2.2 × MFR− ^0.84 , and (iv) the shear stress at 190 ° C. of the molten copolymer is 2.
The fluidity index (FI (1 / sec)) defined by the shear rate when reaching 4 × 10 ⁶ dyne / cm ² and the melt flow rate (MFR) satisfy the relationship represented by FI <150 × MFR. Ethylene, α characterized by the following:
-Olefin copolymers.