JPH10130279A - Organic silicon compound and production of olefin polymer using the compound - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject new compound consisting of a specific organic silicon compound containing cyclopentane ring or cyclohexane ring and useful as an olefin polymerization catalyst component, etc., having a high activity and giving a (co)polymer having a high stereoregularity and broad molecular weight distribution. SOLUTION: This new organic silicon compound is expressed by the formula I (R<1> and R<2> are each a 1-20C alkyl; R<3> to R<6> are each a 1-3C alkyl; R<7> is H or a 1-3C alkyl; R<8> to R<11> are each H or a 1-10C alkyl or form a ring together with an adjacent group) or the formula II (R<12> to R<16> are each same as R<8> ). It is useful e.g. as an olefin polymerization catalyst component having high activity and giving an olefin (co)polymer having high stereoregularity and broad molecular weight distribution. The compound can be produced by reacting a Grignard reagent expressed by the formula III (X<2> is a halogen such as Cl or Br) or the formula IV with a monochlorinated organic silicon compound of the formula V.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a novel organosilicon compound and a method for producing an olefin polymer used therein. More specifically, an organosilicon compound having a bulky organic group, and an olefin polymer or copolymer having high stereoregularity and catalytic activity and having a wide molecular weight distribution, particularly propylene, using the same as a catalyst component. And a process for producing the polymer or copolymer.

[0002]

2. Description of the Related Art Among polyolefins, polypropylene is a polymer having high crystallinity and excellent chemical resistance. In addition, it has good rigidity, tensile strength, optical properties and workability, and is used for various moldings. Further, polypropylene has a lower specific gravity than polystyrene or the like, and is widely used in the field of containers, packaging materials and the like.

However, polypropylene is inferior to polystyrene and ABS resin in rigidity and heat resistance.
Therefore, to provide polypropylene with physical properties equivalent to the rigidity and heat resistance of polystyrene and ABS, and to improve the stereoregularity and, consequently, the crystallinity of polypropylene, in order to expand applications as substitutes for them. Has been made.

[0004] A typical example is a solid catalyst component containing magnesium, titanium, halogen and an electron donor as essential components and an organoaluminum compound, as well as Si-O such as phenyltriethoxysilane and ethyltrimethylsilane.
An organosilicon compound having a -C bond, or a general formula Si
By using an organosilicon compound represented by R′R ″ _n (OR) _3-n (R ′, R ″ and R represent a hydrocarbon group, and n = 0 to 2), the steric properties of the resulting polypropylene can be improved. It improves regularity and crystallinity.

[0005] However, polymers produced by these catalyst systems have a new problem of poor moldability in the field of large molded articles because of their narrow molecular weight distribution.
On the other hand, there is a method of expanding the molecular weight distribution by multi-stage polymerization, but this method has problems such as an increase in the size of the apparatus and a decrease in productivity.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides an organosilicon compound having a bulky organic group which is effective as an olefin polymerization catalyst component, and has high stereoregularity and catalytic activity by using it as a catalyst component. It is another object of the present invention to provide a method capable of stably producing an olefin polymer or copolymer having a wide molecular weight distribution, particularly a propylene polymer or copolymer.

[0007]

Means for Solving the Problems To achieve the above object, as a result of diligent research, an organosilicon compound having a bulky organic group which is effective as an olefin polymerization catalyst component as shown below has been found. By using
The present inventors have found that an olefin polymer or copolymer, particularly a propylene polymer or copolymer, having high stereoregularity and catalytic activity and a wide molecular weight distribution can be stably produced, and completed the present invention. (1) General formula (I)

[0008]

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(Where R¹And R^TwoIs 1 to 20 carbon atoms
Represents an alkyl group, which may be the same,
They may be different from each other. R^Three, R^Four, R^FiveAnd R⁶Is charcoal
Represents an alkyl group having 1 to 3 prime numbers,
May be different from each other. R⁷Is a hydrogen atom or
Represents an alkyl group having 1 to 3 carbon atoms. Also, R⁸, R
⁹, R^TenAnd R¹¹Represents a hydrogen atom or an atom having 1 to 10 carbon atoms.
Represents an alkyl group, which may be the same or different
Or a ring may be formed with an adjacent group. )
Organosilicon compounds. (2) General formula (II)

[0010]

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(Where R¹And R^TwoIs 1 to 20 carbon atoms
Represents an alkyl group, which may be the same,
They may be different from each other. R^Three, R^Four, R^FiveAnd R⁶Is charcoal
Represents an alkyl group having 1 to 3 prime numbers,
May be different from each other. R⁷Is a hydrogen atom or
Represents an alkyl group having 1 to 3 carbon atoms. Also, R¹², R
¹³, R¹⁴, R^Fifteen And R¹⁶Is a hydrogen atom or carbon number 1 to 1
0 alkyl groups, which are the same or different
Or a ring may be formed with an adjacent group. )
An organosilicon compound represented by the formula: (3) Titanium compound, magnesium compound and electron donation
Solid catalyst component obtained by contacting and reacting
Luminium compound and general formula (I)

[0012]

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(Wherein R¹And R^TwoIs 1 to 20 carbon atoms
Represents an alkyl group, which may be the same,
They may be different from each other. R^Three, R^Four, R^FiveAnd R⁶Is charcoal
Represents an alkyl group having 1 to 3 prime numbers,
May be different from each other. R⁷Is a hydrogen atom or
Represents an alkyl group having 1 to 3 carbon atoms. Also, R⁸, R
⁹, R^TenAnd R¹¹Represents a hydrogen atom or an atom having 1 to 10 carbon atoms.
Represents an alkyl group, which may be the same or different
Or a ring may be formed with an adjacent group. )
Organic silicon compound represented by the general formula (II)

[0014]

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(Where R¹And R^TwoIs 1 to 20 carbon atoms
Represents an alkyl group, which may be the same,
They may be different from each other. R^Three, R^Four, R^FiveAnd R⁶Is charcoal
Represents an alkyl group having 1 to 3 prime numbers,
May be different from each other. R⁷Is a hydrogen atom or
Represents an alkyl group having 1 to 3 carbon atoms. Also, R¹², R
¹³, R¹⁴, R^Fifteen And R¹⁶Is a hydrogen atom or carbon number 1 to 1
0 alkyl groups, which are the same or different
Or a ring may be formed with an adjacent group. )
Catalyst consisting of a combination of organosilicon compounds represented by
Olefin polymerization or copolymerization using
A process for producing an olefin polymer, characterized by the following. (4) The above (3), wherein the olefin is propylene.
A method for producing an olefin polymer.

[0016]

Embodiments of the present invention will be described below. One of the organosilicon compounds of the present invention has the general formula
(I)

[0017]

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## EQU1 ## Of the above general formula (I)
 R¹And R^TwoRepresents a hydrocarbon group having 1 to 20 carbon atoms.
You. Specifically, methyl group, ethyl group, propyl group and the like
Linear hydrocarbon group, isopropyl group, isobutyl group, t
-Branched hydrocarbon groups such as butyl group and texyl group,
Saturated cyclic such as butyl and cyclopentyl cyclohexyl
Hydrocarbon group, phenyl group, pentamethylphenyl group, etc.
And unsaturated cyclic hydrocarbon groups. Also, R ¹And R
^TwoMay be the same or different. Among these
Is preferably a methyl group or an ethyl group, particularly preferably a methyl group.
Good.

The substituted or unsubstituted texyl group (VII) of the above formula (I)

[0020]

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R ³ , R ⁴ , R ⁵ and R ⁶ each represent an alkyl group having 1 to 3 carbon atoms, and R ⁷ represents a hydrogen atom or an alkyl group having 1 to 3 carbon atoms. Specific examples of the substituted or unsubstituted texyl group include 1,1,2-trimethylpropyl group (Texyl group), 1,1,2-trimethylbutyl group, 1,1-dimethyl-2-ethylbutyl group, , 1,2,3-tetramethylbutyl group, 1,1,
2-trimethylpentyl group, 1,1,3-trimethyl-
A 2-ethylbutyl group is exemplified.

The substituted or unsubstituted cyclopentyl group (VIII) of the above formula (I)

[0023]

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R ⁸ , R ⁹ , R ¹⁰ and R ¹¹ each represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, which may be the same or different from each other, and May be formed. Specific examples of the substituted or unsubstituted cyclopentyl group include a cyclopentyl group, a 2-methylcyclopentyl group, a 2-ethylcyclopentyl group,
2-n-butylcyclopentyl group, 2,3-dimethylcyclopentyl group, 2,4-dimethylcyclopentyl group,
2,5-dimethylcyclopentyl group, 2,3-diethylcyclopentyl group, 2,4-diethylcyclopentyl group, 2,5-diethylcyclopentyl group, 2,3,4-
Examples thereof include a trimethylcyclopentyl group, a 2,3,5-trimethylcyclopentyl group, a 2,3,4-triethylcyclopentyl group, a 2,3,5-triethylcyclopentyl group, a tetramethylcyclopentyl group, and a tetraethylcyclopentyl group.

Specific examples of the compound represented by the general formula (I) include 1,1,2-trimethylpropylcyclopentyldimethoxysilane and 1,1,2-trimethylpropyl-2.
-Methylcyclopentyldimethoxysilane, 1,1,2
-Trimethylpropyl-2-ethylcyclopentyldimethoxysilane, 1,1,2-trimethylpropyl-2-
n-butylcyclopentyldimethoxysilane, 1,1,
2-trimethylpropyl-2,5-dimethylcyclopentyldimethoxysilane, 1,1,2-trimethylpropyl-2,3-diethylcyclopentyldimethoxysilane, 1,1,2-trimethylpropyl-2,5-diethylcyclopentyldimethoxysilane, 1,1,2-trimethylpropyl-2,3,5-trimethylcyclopentyldimethoxysilane, 1,1,2-trimethylbutylcyclopentyldimethoxysilane, 1,1,2-trimethylbutyl-2-methylcyclopentyldimethoxysilane, 1, 1,2-trimethylbutyl-2-ethylcyclopentyldimethoxysilane, 1,1,2-trimethylbutyl-2-n-butylcyclopentyldimethoxysilane, 1,1,2-trimethylbutyl-2,5-dimethylcyclopentyldimethoxy Silane, 1,1,2-trimethyl-butyl-2,3-diethyl-cyclopentyl dimethoxysilane, 1,1,2-trimethyl-butyl-2,5-diethyl-cyclopentyl dimethoxysilane, 1,1,2
Trimethylbutyl-2,3,5-trimethylcyclopentyldimethoxysilane, 1,1-dimethyl-2-ethylbutylcyclopentyldimethoxysilane, 1,1-dimethyl-2-ethylbutyl-2-methylcyclopentyldimethoxysilane, 1,1-dimethyl -2-ethylbutyl-2-ethylcyclopentyldimethoxysilane, 1,1
-Dimethyl-2-ethylbutyl-2-n-butylcyclopentyldimethoxysilane, 1,1-dimethyl-2-ethylbutyl-2,5-dimethylcyclopentyldimethoxysilane, 1,1-dimethyl-2-ethylbutyl-2,
3-diethylcyclopentyldimethoxysilane, 1,1
-Dimethyl-2-ethylbutyl-2,5-diethylcyclopentyldimethoxysilane, 1,1-dimethyl-2-
Ethylbutyl-2,3,5-trimethylcyclopentyldimethoxysilane, 1,1,2,3-tetramethylbutylcyclopentyldimethoxysilane, 1,1,2,3-
Tetramethylbutyl-2-methylcyclopentyldimethoxysilane, 1,1,2,3-tetramethylbutyl-2
-Ethylcyclopentyldimethoxysilane, 1,1,
2,3-tetramethylbutyl-2-n-butylcyclopentyldimethoxysilane, 1,1,2,3-tetramethylbutyl-2,5-dimethylcyclopentyldimethoxysilane, 1,1,2,3-tetramethylbutyl- Two, three
-Diethylcyclopentyldimethoxysilane, 1,1,
2,3-tetramethylbutyl-2,5-diethylcyclopentyldimethoxysilane, 1,1,2,3-tetramethylbutyl-2,3,5-trimethylcyclopentyldimethoxysilane, 1,1,2-trimethylpentylcyclopentyldimethoxysilane Silane, 1,1,2-trimethylpentyl-2-methylcyclopentyldimethoxysilane, 1,1,2-trimethylpentyl-2-ethylcyclopentyldimethoxysilane, 1,1,2-trimethylpentyl-2-n-butylcyclopentyldimethoxy Silane, 1,1,2-trimethylpentyl-2,5-dimethylcyclopentyldimethoxysilane, 1,1,2-trimethylpentyl-2,3-diethylcyclopentyldimethoxysilane, 1,1,2-trimethylpentyl-
2,5-diethylcyclopentyldimethoxysilane,
1,1,2-trimethylpentyl-2,3,5-trimethylcyclopentyldimethoxysilane, 1,1,2-trimethylisopropylbutylcyclopentyldimethoxysilane, 1,1,2-trimethylisopropylbutyl-
2-methylcyclopentyldimethoxysilane, 1,1,
2-trimethylisopropylbutyl-2-ethylcyclopentyldimethoxysilane, 1,1,2-trimethylisopropylbutyl-2-n-butylcyclopentyldimethoxysilane, 1,1,3-trimethyl-2-ethylbutylcyclopentyldimethoxysilane, 1, 1,3-trimethyl-2-ethylbutyl-2-methylcyclopentyldimethoxysilane, 1,1,3-trimethyl-2-ethylbutyl-2-ethylcyclopentyldimethoxysilane, 1,1,3-trimethyl-2-ethylbutyl-2-
n-butylcyclopentyldimethoxysilane, 1,1,
3-trimethyl-2-ethylbutyl-2,5-dimethylcyclopentyldimethoxysilane, 1,1,3-trimethyl-2-ethylbutyl-2,3-diethylcyclopentyldimethoxysilane, 1,1,3-trimethyl-2-
Ethylbutyl-2,5-diethylcyclopentyldimethoxysilane, 1,1,3-trimethyl-2-ethylbutyl-2,3,5-trimethylcyclopentyldimethoxysilane, etc., and in addition to these compounds, the substitution of the dimethoxy group in the compounds Examples thereof include compounds having a diethoxy group.

Among the compounds represented by the general formula (I), those represented by the general formula (V)

[0027]

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The compound represented by the following formula is preferred. The above general formula
R ^{21 in} (V) represents a methyl group or an ethyl group. R ³ , R
⁴ , R ⁵ , R ⁶ and R ⁷ are the same as above. Specific examples of the compound represented by the general formula (V) include 1,1,2-trimethylpropylcyclopentyldimethoxysilane,
1,2-trimethylbutylcyclopentyldimethoxysilane, 1,1,2-trimethylpentylcyclopentyldimethoxysilane, 1,1-dimethyl-2-ethylbutylcyclopentyldimethoxysilane, 1,1,2,3-
Tetramethylbutylcyclopentyldimethoxysilane,
1,1,2-trimethylpentylcyclopentyldimethoxysilane, 1,1,2-trimethylisopropylbutylcyclopentyldimethoxysilane, 1,1,3-trimethyl-2-ethylbutylcyclopentyldimethoxysilane, and the like, in addition to these compounds, A compound in which a diethoxy group is used instead of the dimethoxy group in the compound may be mentioned.

Among these, specific examples of particularly preferred compounds include 1,1,2-trimethylpropylcyclopentyldimethoxysilane and 1,1,2-trimethylpropylcyclopentyldiethoxysilane.
Another of the organosilicon compounds of the present invention has the general formula (II)

[0030]

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## EQU1 ## R ¹ and R ² of the general formula (II) and a substituted or unsubstituted texyl group (VII)

[0032]

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R ³ , R ⁴ , R ⁵ , R ⁶ and R ⁷ are the same as described above. Further, a substituted or unsubstituted cyclohexyl group of the general formula (II) (IX)

[0034]

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R ¹² , R ¹³ , R ¹⁴ , R ¹⁵ and R ¹⁶ each represent a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, which may be the same, different from each other, or adjacent to each other. It may form a ring with the group. Specific examples of the substituted or unsubstituted cyclohexyl group include a cyclohexyl group,
2-methylcyclohexyl group, 2-ethylcyclohexyl group, 2-n-butylcyclohexyl group, 2,3-dimethylcyclohexyl group, 2,4-dimethylhexylcyclohexyl group, 2,5-dimethylcyclohexyl group,
2,6-dimethylcyclohexyl group, 2,3-diethylcyclohexyl group, 2,4-diethylhexylcyclohexyl group, 2,5-diethylcyclohexyl group, 2,6
-Diethylcyclohexyl, 2,3,4-trimethylcyclohexyl, 2,4,5-trimethylcyclohexyl, 2,4,6-trimethylcyclohexyl, pentamethylcyclohexyl, and pentaethylcyclohexyl.

Specific examples of the compound represented by the general formula (II) include 1,1,2-trimethylpropylcyclohexyldimethoxysilane and 1,1,2-trimethylpropyl-2.
-Methylcyclohexyldimethoxysilane, 1,1,2
-Trimethylpropyl-2-ethylcyclohexyldimethoxysilane, 1,1,2-trimethylpropyl-2-
n-butylcyclohexyldimethoxysilane, 1,1,
2-trimethylpropyl-2,6-dimethylcyclohexyldimethoxysilane, 1,1,2-trimethylpropyl-2,6-diethylcyclohexyldimethoxysilane, 1,1,2-trimethylpropyl-2,4,6-trimethylcyclohexyldimethoxysilane Silane, 1,1,2
-Trimethylpropylpentamethylcyclohexyldimethoxysilane, 1,1,2-trimethylpropylpentaethylcyclohexyldimethoxysilane, 1,1,2-
Trimethylbutylcyclohexyldimethoxysilane,
1,1,2-trimethylbutyl-2-methylcyclohexyldimethoxysilane, 1,1,2-trimethylbutyl-2-ethylcyclohexyldimethoxysilane, 1,
1,2-trimethylbutyl-2-n-butylcyclohexyldimethoxysilane, 1,1,2-trimethylbutyl-2,6-dimethylcyclohexyldimethoxysilane,
1,1,2-trimethylbutyl-2,6-diethylcyclohexyldimethoxysilane, 1,1,2-trimethylbutyl-2,4,6-trimethylcyclohexyldimethoxysilane, 1,1,2-trimethylbutylpentamethylcyclohexyldimethoxysilane Silane, 1,1,2-trimethylbutylpentaethylcyclohexyldimethoxysilane, 1,1-dimethyl-2-ethylbutylcyclohexyldimethoxysilane, 1,1-dimethyl-2-ethylbutyl-2-methylcyclohexyldimethoxysilane,
1,1-dimethyl-2-ethylbutyl-2-ethylcyclohexyldimethoxysilane, 1,1-dimethyl-2-
Ethylbutyl-2-n-butylcyclohexyldimethoxysilane, 1,1-dimethyl-2-ethylbutyl-2,
6-dimethylcyclohexyldimethoxysilane, 1,1
-Dimethyl-2-ethylbutyl-2,6-diethylcyclohexyldimethoxysilane, 1,1-dimethyl-2-
Ethylbutyl-2,4,6-trimethylcyclohexyldimethoxysilane, 1,1-dimethyl-2-ethylbutylpentamethylcyclohexyldimethoxysilane, 1,
1-dimethyl-2-ethylbutylpentaethylcyclohexyldimethoxysilane, 1,1,2,3-tetramethylbutylcyclohexyldimethoxysilane, 1,1,
2,3-tetramethylbutyl-2-methylcyclohexyldimethoxysilane, 1,1,2,3-tetramethylbutyl-2-ethylcyclohexyldimethoxysilane,
1,1,2,3-tetramethylbutyl-2-n-butylcyclohexyldimethoxysilane, 1,1,2,3-tetramethylbutyl-2,6-dimethylcyclohexyldimethoxysilane, 1,1,2,3- Tetramethylbutyl-2,6-diethylcyclohexyldimethoxysilane,
1,1,2,3-tetramethylbutyl-2,4,6-trimethylcyclohexyldimethoxysilane, 1,1,
2,3-tetramethylbutylpentamethylcyclohexyldimethoxysilane, 1,1,2,3-tetramethylbutylpentaethylcyclohexyldimethoxysilane,
1,1,2-trimethylpentylcyclohexyldimethoxysilane, 1,1,2-trimethylpentyl-2-methylcyclohexyldimethoxysilane, 1,1,2-trimethylpentyl-2-ethylcyclohexyldimethoxysilane, 1,1,2- Trimethylpentyl-2-n-
Butylcyclohexyldimethoxysilane, 1,1,2-
Trimethylpentyl-2,6-dimethylcyclohexyldimethoxysilane, 1,1,2-trimethylpentyl-
2,6-diethylcyclohexyldimethoxysilane,
1,1,2-trimethylpentyl-2,4,6-trimethylcyclohexyldimethoxysilane, 1,1,2-trimethylpentylpentamethylcyclohexyldimethoxysilane, 1,1,2-trimethylpentylpentaethylcyclohexyldimethoxysilane, etc., and In addition to these compounds, there may be mentioned compounds in which a diethoxy group is used instead of the dimethoxy group in the compound.

Among the compounds represented by the general formula (II), those represented by the general formula (VI)

[0038]

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The compound represented by the formula is preferred. The above general formula
R ^{21 in} (VI) represents a methyl group or an ethyl group. R ³ , R
⁴ , R ⁵ , R ⁶ and R ⁷ are the same as above. Specific examples of the compound of the general formula (VI) include 1,1,2-trimethylpropylcyclohexyldimethoxysilane,
1,2-trimethylbutylcyclohexyldimethoxysilane, 1,1-dimethyl-2-ethylbutylcyclohexyldimethoxysilane, 1,1,2,3-tetramethylbutylcyclohexyldimethoxysilane, 1,1,2-
Trimethylpentylcyclohexyldimethoxysilane,
And the like, and in addition to these compounds, compounds in which dimethoxy groups are substituted for dimethoxy groups in the compounds.

Among these, specific examples of particularly preferred compounds include 1,1,2-trimethylpropylcyclohexyldimethoxysilane, 1,1,2-trimethylpropylcyclohexyldiethoxysilane and the like.
The organosilicon compounds represented by the general formulas (I) and (II) of the present invention can be synthesized as described below.

First, a hydrosilylation reaction between a substituted olefin corresponding to the above-mentioned general formula (VII) and HSiCl ₃ gives a compound of the general formula (X)

[0042]

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Wherein R ³ , R ⁴ , R ⁵ , R ⁶ and R ⁷
Is the same as above. ), And then converted to the general formula (XI) with lithium aluminum hydride.

[0044]

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Wherein R ³ , R ⁴ , R ⁵ , R ⁶ and R ⁷
Is the same as above. ) And reacting it with anhydrous copper chloride and a catalytic amount of copper iodide to give the general formula (XII)

[0046]

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Wherein R ³ , R ⁴ , R ⁵ , R ⁶ and R ⁷
Is the same as above. ) Can be obtained. In the above hydrosilylation reaction,
Radical initiators such as azoisobutyronitrile are converted to HSiC
respect l ₃ 1 mole, it may added 0.01 mol. Also, substituted olefins, relative HSiCl ₃ 1 mole, it may be 0.1 to 1.0 moles. The reaction temperature is generally 0 to 200 ° C, preferably 60 to 150 ° C.
It is preferable to set it in the range.

When the general formula (X) is converted to the general formula (XI) by using lithium aluminum hydride, the reaction is preferably carried out in an ether solvent such as tetrahydrofuran (THF). (X) It is preferable to react 1 to 5 mol per 1 mol. At the time of the reaction, it is desirable to heat and reflux. In addition, when reacting anhydrous copper chloride with a catalytic amount of copper iodide in the general formula (XI), the reaction is preferably carried out in an ether solvent such as tetrahydrofuran (THF). It is preferable to react 1 to 3 mol of copper iodide with respect to 1 mol of XI) and 0.1 to 0.25 mol of copper iodide with respect to 1 mol of general formula (XI). The reaction temperature is usually 0 to 250.
C, preferably in the range of 10 to 50C. On the other hand, the general formula (XIII) or (XIV)

[0049]

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(Wherein R ⁸ , R ⁹ , R ¹⁰ , R ¹¹ , R ¹² ,
R ¹³ , R ¹⁴ , R ¹⁵ and R ^{16 each} represent a hydrogen atom or a group having 1 to 1 carbon atoms.
It represents 0 alkyl groups, which may be the same or different, and may form a ring with an adjacent group. X
² represents a halogen atom such as a chlorine atom or a bromine atom. )
Is obtained by reacting a halide (chloride or bromide) of naphthyl or substituted naphthyl corresponding to the above general formulas (VIII) and (IX) with magnesium in an ether solvent such as diethyl ether or THF. It is obtained by doing. Next, the above general formula (XII)

[0051]

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Wherein R ³ , R ⁴ , R ⁵ , R ⁶ and R ⁷
Is the same as above. ) And a general formula (XIII) or (XIV)

[0053]

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(Wherein R ⁸ , R ⁹ , R ¹⁰ , R ¹¹ , R ¹² ,
R ¹³ , R ¹⁴ , R ¹⁵ , R ¹⁶ and X ² are the same as above. ) By reacting with the Grignard reagent represented by
General formula (XV) or (XVI)

[0055]

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(Wherein R ³ , R ⁴ , R ⁵ , R ⁶ , R ⁷ ,
R ⁸ , R ⁹ , R ¹⁰ , R ¹¹ , R ¹² , R ¹³ , R ¹⁴ , R ¹⁵ and R ¹⁶ are the same as described above. To obtain an organosilicon compound (intermediate). In the reaction of the above general formula (XII) with the general formula (XIII) or (XIV), 1 to 5 mol of the general formula (XIII) or (XIV) is usually added to 1 mol of the general formula (XII) with diethyl. It is obtained by reacting in an ether solvent such as ether or THF. The reaction temperature is usually in the range of 0 to 100 ° C, preferably 10 to 50 ° C. Then, the above-mentioned organosilicon compound (intermediate) and a compound of the general formula (XVII)
Or (XVIII) R ¹ OH (XVII) or R ² OH (X
VIII) wherein R ¹ and R ² each represent an alkyl group having 1 to 20 carbon atoms, which may be the same or different from each other. And the desired general formula (I) or (II)

[0057]

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(Wherein R ¹ , R ² , R ³ , R ⁴ , R ⁵ ,
R ⁶ , R ⁷ , R ⁸ , R ⁹ , R ¹⁰ , R ¹¹ , R ¹² , R ¹³ , R
¹⁴ , R ¹⁵ and R ¹⁶ are the same as above. ) Can be synthesized. The reaction of the above general formula (XV) or (XVI) with the general formula (XVII) or (XVIII) is usually carried out in the presence of a catalyst with respect to 1 mole of the general formula (XV) or (XVI) based on the general formula (XVII) ) Or (XVIII) in an ether solvent such as diethyl ether or THF. Preferably, the heating is performed under reflux.

Examples of the catalyst include metal alkoxides such as sodium methoxide and sodium ethoxide, transition metals such as platinum and palladium, and transition metal compounds such as palladium chloride, chloroplatinic acid and bistriphenylphosphine palladium dichloride. These may be used alone or in combination of two or more. Usually, these catalysts are preferably used in an amount of 0.05 to 0.20 mol based on the organosilicon compound represented by the general formula (XV) or (XVI). The production method of the olefin polymer of the present invention is a solid catalyst component obtained by contacting and reacting a titanium compound, a magnesium compound and an electron donor, an organoaluminum compound and the general formula (I)

[0060]

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Or the general formula (II)

[0062]

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(Wherein R¹, R^Two, R^Three, R^Four,
R^Five, R⁶, R⁷, R⁸, R⁹, R^Ten, R ¹¹, R¹², R
¹³, R¹⁴, R^FifteenAnd R¹⁶Is the same as above. )
Using a catalyst consisting of combinations of organosilicon compounds
To perform olefin polymerization or copolymerization.
It is a sign. Preparation of the olefin polymer of the present invention
Of the solid catalyst components used for
As a product, a compound represented by the general formula (III) MgR¹⁷R¹⁸ (III) can be used.

In the general formula (III), R ¹⁷ and R
¹⁸ represents a hydrocarbon group, an OR ¹⁹ group (R ¹⁹ is a hydrocarbon group), or a halogen atom. More specifically, as the hydrocarbon group, an alkyl group having 1 to 12 carbon atoms, a cycloalkyl group, an aryl group, an aralkyl group, or the like, and as the OR ¹⁹ group, R ¹⁹ is an alkyl group having 1 to 12 carbon atoms. , Cycloalkyl group, aryl group, aralkyl group and the like,
Examples of the halogen atom include chlorine, bromine, iodine, and fluorine. R ¹⁷ and R ¹⁸ may be the same or different.

Magnesium represented by the above general formula (III)
As a specific example of the compound, Mg (CH_Three)_Two, Mg (C
_TwoH_Five)_Two, Mg (i-C_ThreeH₇)_Two, Mg (C_FourH₉)_Two,
Mg (C₆H₁₃)_Two, Mg (C₈H₁₇)_Two, Mg (C_TwoH_Five)
 (C_FourH₉), Mg (C₆H_Five) _Two, Mg (C₆H₁₁)_Two, M
g (OCH_Three)_Two, Mg (OC_TwoH_Five)_Two, Mg (OC
_FourH₉)_Two, Mg (OC₆H₁₃)_Two, Mg (OC₈H₁₇)_Two,
Mg (OC₆H_Five)_Two, Mg (OC₆H₁₁)_Two, Mg (C_Two
H_Five) Cl, Mg (C_FourH₉) Cl, Mg (C₆H₁₃) C
1, Mg (i-C_FourH₉) Cl, Mg (t-C_FourH₉) C
1, Mg (C₆H_Five) Cl, Mg (CH_TwoC₆H_Five) Cl,
Mg (C_TwoH_Five) Br, Mg (C_FourH₉) Br, Mg (C₆
H_Five) Br, Mg (C_FourH₉) I, Mg (OC_FourH₉) Cl,
Mg (OC₆H₁₃) Cl, Mg (OC₆H_Five) Cl, Mg
(OC_TwoH_Five) Br, Mg (OC_FourH₉) Br, Mg (OC
_TwoH_Five) I, MgCl_Two, MgBr_Two, MgI_TwoEtc.
I can do it. The magnesium compound is a metal
Prepared from compounds containing gnesium or magnesium
can do.

The magnesium compound may be brought into contact with a halide in advance. Examples of the halide include SiCl ₄ , SiBr ₄ , SnCl ₄ ,
SnBr ₄ , HCl and the like can be mentioned. Among these, SiCl ₄ is particularly preferred. Further, the magnesium compound may be supported on a support such as silica or alumina. The above magnesium compounds may be used alone or in combination of two or more.
In addition, halogens such as iodine, silicon, other elements such as aluminum may be contained, alcohol, ether,
It may contain an electron donor such as esters.

Among the solid catalyst components of the present invention, titanium compounds
Is represented by the general formula (IV) TiX¹ _p(OR²⁰)_4-p ... (IV) (where X¹Is preferably a halogen atom, especially a chlorine atom
K, R²⁰Is a hydrocarbon group having 1 to 10 carbon atoms,
Or a branched alkyl group;²⁰Where there are multiple
In that case they may be the same or different. p is 0
-4. Using a titanium compound represented by
be able to. Specifically, Ti (OCH_Three) _Four, Ti
(OC_TwoH_Five)_Four, Ti (On-C_ThreeH₇)_Four, Ti (O
-Ic_ThreeH₇) _Four, Ti (On-C_FourH₉)_Four, Ti
(OiC_FourH₉)_Four, Ti (OC₆H₁₁)_Four, Ti (O
C₆H_Five)_Four Such as tetraalkoxy titanium, TiC
l_Four, TiBr _Four, TiI_FourSuch as tetrahalogenated
Tan, Ti (OCH_Three) Cl_Three, Ti (OC_TwoH_Five) C
l_Three, Ti (OiC_ThreeH₇) Cl_Three, Ti (On-
C_ThreeH₇) Cl _Three, Ti (On-C_FourH₉) Cl_Three, Ti
(OC_TwoH_Five) Br_ThreeTrihalogenated alkoxythio
Tan, Ti (OCH_Three)_TwoCl_Two, Ti (OC_TwoH_Five)_TwoC
l_Two, Ti (OiC_ThreeH₇)_TwoCl_Two, Ti (On-
-C_ThreeH₇)_TwoCl_Two, Ti (OC_TwoH_Five)_TwoBr_TwoSuch as
Dialkoxytitanium dihalide, Ti (OCH_Three)_ThreeC
l, Ti (OC_TwoH_Five)_ThreeCl, Ti (OiC_ThreeH₇)
_ThreeCl, Ti (On-C_ThreeH₇)_ThreeCl, Ti (On
-C_FourH₉)_ThreeMonohalogenated trialkoxy such as Cl
Titanium and the like can be mentioned. Among these, high ha
Rogen-containing titanium compounds, especially TiCl_FourIs preferred.
These titanium compounds may be used alone.
And two or more kinds may be used in combination.

The electron donor of the solid catalyst component of the present invention includes alcohols, phenols, ketones, aldehydes, carboxylic acids, malonic acids, esters of organic or inorganic acids, monoethers, diethers and polyethers. And nitrogen-containing electron donors such as ammonia, amines, nitriles and isocyanates. Of these, esters of carboxylic acids are preferred, and esters of aromatic carboxylic acids are more preferred. Particularly, esters of aromatic dicarboxylic acids are preferred. Further, an aliphatic hydrocarbon in which the organic group in the ester portion is linear, branched or cyclic is preferable.

Specifically, phthalic acid, naphthalene-1,
2-dicarboxylic acid, naphthalene-2,3-dicarboxylic acid, 5,6,7,8-tetrahydronaphthalene-1,2
Methyl, ethyl, n- of dicarboxylic acids such as -dicarboxylic acid, 5,6,7,8-tetrahydronaphthalene-2,3-dicarboxylic acid, indane-4,5-dicarboxylic acid, indane-5,6-dicarboxylic acid; Propyl, isopropyl, n-butyl, isobutyl, t-butyl, n-pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 1,1-dimethylpropyl, 1-methylpentyl, 2-methylpentyl, 3-methyl Pentyl, 4-methylpentyl, 1-ethylbutyl, 2-ethylbutyl,
3-ethylbutyl, n-hexyl, cyclohexyl, n
-Heptyl, n-octyl, n-nonyl, 2-methylhexyl, 3-methylhexyl, 4-methylhexyl, 2
-Ethylhexyl, 3-ethylhexyl, 4-ethylhexyl, 2-methylpentyl, 3-methylpentyl,
And dialkyl esters such as -ethylpentyl and 3-ethylpentyl.

Of these, phthalic acid diesters are preferable, and linear or branched aliphatic hydrocarbons having 4 or more carbon atoms in the organic group in the ester portion are preferable. Specific examples thereof include diisobutyl phthalate and di-n-phthalate.
-Butyl, di-n-heptyl phthalate, diethyl phthalate and the like are preferred. These aromatic carboxylic diester compounds may be used alone or in combination of two or more.
In order to obtain the solid catalyst component of the present invention, the magnesium compound, the titanium compound and the electron donor described above may be contacted and reacted by a usual method. It is preferred that

The amount of the titanium compound to be used is generally 0.5 to 100 mol, preferably 1 to 50 mol, per 1 mol of magnesium atom of the magnesium compound. The amount of the electron donor used is:
Usually, 0.01 to 10 mol, preferably 0.0 to 10 mol, per 1 mol of magnesium atom of the magnesium compound.
The range is preferably 5 to 1.0 mol. Further, SiCl ₄ may be added as a halogenating agent. The contact / reaction temperature is usually -20 to 200 ° C, preferably 20 to 200 ° C.
The contact / reaction time is usually 1 minute to 24 hours, preferably 10 minutes to 6 hours.

The contact procedure is not particularly limited. For example, each component may be contacted and reacted in the presence of an inert solvent such as a hydrocarbon, or each component may be diluted and contacted and reacted with an inert solvent such as a hydrocarbon in advance. As the inert solvent, for example, aliphatic hydrocarbons such as n-pentane, isopentane, n-hexane, n-heptane, n-octane, isooctane, benzene, toluene,
An aromatic hydrocarbon such as xylene or a mixture thereof can be mentioned. Further, it is preferable that the contact and reaction of the titanium compound are performed twice or more, and the titanium compound is sufficiently supported on the magnesium compound serving as a catalyst carrier. The solid catalyst component obtained by the above contact and reaction is preferably washed with an inert solvent such as a hydrocarbon. This inert solvent may be the same as described above. The solid product can also be stored dry or in an inert solvent such as a hydrocarbon.

The organoaluminum compound used for producing the olefin polymer of the present invention includes an alkyl group,
Having a halogen atom, a hydrogen atom, an alkoxy group,
Aluminoxanes and mixtures thereof can be used. Specifically, trialkylaluminum such as trimethylaluminum, triethylaluminum, triisopropylaluminum, triisobutylaluminum, trioctylaluminum, dialkylaluminum monochloride, diisopropylaluminum monochloride, diisobutylaluminum monochloride, dialkyl such as dioctylaluminum monochloride Examples thereof include alkylaluminum sesquihalides such as aluminum monochloride and ethylaluminum sesquichloride, and chain aluminoxanes such as methylaluminoxane. Among these organoaluminum compounds, trialkylaluminum having a lower alkyl group having 1 to 5 carbon atoms, particularly trimethylaluminum, triethylaluminum, tripropylaluminum and triisobutylaluminum are preferable. These organoaluminum compounds may be used alone or in combination of two or more. The organosilicon compound used in the production of the olefin polymer of the present invention has the general formula (I)

[0074]

Embedded image

Or the general formula (II)

[0076]

Embedded image

Is represented by R ¹ , R ^{2 of} the above general formula (I) or (II), R ³ , R ⁴ , R ⁵ , R ⁶ , R
^{7, R 8, R 9,} R 10, R 11, R 12, R 13, R 14, R 15
And R ¹⁶ are the same as described above. The method for producing an olefin polymer of the present invention comprises contacting and reacting the above magnesium compound, titanium compound and an electron donor with an organic aluminum compound and the above-mentioned general formula (I) or the general formula (I). In the presence of an olefin polymerization catalyst comprising a combination of organosilicon compounds represented by (II),
It is characterized in that olefin polymerization or copolymerization is performed.

The olefins usable in the polymerization include ethylene, propylene, 1-butene, 1-octene, 1-octene.
Decene, 3-methyl-1-pentene, 4-methyl-1-
Α-olefins such as pentene can be mentioned.
It is preferably applied to the polymerization of α-olefin having 3 or more carbon atoms, particularly propylene. In addition, propylene and ethylene,
Also applicable to copolymerization of -butene or 1-hexene.
This production method is not particularly limited with respect to the polymerization method and its conditions, and can be applied to any of solution polymerization, slurry polymerization, gas phase polymerization, bulk polymerization and the like. Further, the present invention is applicable to both single-stage polymerization and continuous polymerization, and is also applicable to two-stage polymerization and multi-stage polymerization under different conditions. Furthermore, the catalyst at the time of polymerization is ethylene, propylene, 1-
Those which have been prepolymerized with an α-olefin such as butene or 1-hexene may be used. Examples of the solvent that can be used for polymerization include, for example, aliphatic hydrocarbons such as n-pentane, isopentane, n-hexane, n-heptane, n-octane, and isooctane; benzene, toluene, and aromatic hydrocarbons such as xylene; Mixtures can be mentioned.

The amount of the solid catalyst component added under the polymerization conditions is usually 0.001 to 0.1 as titanium atom of the solid catalyst component in the case of slurry polymerization or solution polymerization.
Mmol / liter, preferably 0.005 to 0.0
5 mmol / l, the general formula
The amount of the organosilicon compound represented by (I) or (II) is S
The i / Ti atomic ratio is usually 1 to 5000, preferably 5
The content of the organoaluminum compound is usually set at an Al / Ti atomic ratio of 5 to 1000.
It is good to be in the range of 10,000, preferably 50 to 5000.

These may be charged into a polymerization vessel by a usual method, and the contact procedure and the like are not particularly limited. The pressure of the polymerization system is usually from normal pressure to 200 kg / cm ² , preferably
In the range of ^{2 to} 150 kg / cm ² , the polymerization temperature is usually
The polymerization time is usually 10 minutes to 10 hours, preferably 10 minutes to 5 hours. An inert gas such as nitrogen may be present.

The molecular weight at the time of polymerization is controlled by the polymerization temperature,
It is possible to some extent depending on the polymerization conditions such as the catalyst concentration and the catalyst molar ratio, but it is more effective to carry out by adding hydrogen.

[0082]

EXAMPLES The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples. Example 1 1,1,2-Trimethylpropyl-cyclopentyldimethoxysilane [(Thexyl) (Cycl
300 ml of synthesis of (opentyl) Si (OMe) ₂ ]
2,3-dimethyl-2-butene (7
5 ml, 0.60 ml), into which HSiCl
₃ (240 g, 1.8 mol) and azoisobutyronitrile (18 g, 0.11 ml).
Stirred for hours. Thereafter, the solution was taken out by decantation, and distilled under reduced pressure (76 ° C., 6 mmHg).
xylSiCl ₃ was obtained.

In a 1-liter three-necked flask, THF (500 m
l), and LiAlH ₄ (67.8 g, 1.8)
4 ml) was added (exothermic). Next, the above Thexyl
A THF solution of SiCl ₃ (131.9 g, 0.6 ml) was added dropwise. After the dropwise addition, the mixture was heated to 65 ° C. and refluxed overnight.
Thereafter, excess LiAlH ₄ was hydrolyzed, and the organic layer was separated. It is concentrated and distilled (95-98 ° C) to give T
It was obtained hexylSiH _3.

Subsequently, ether (600 ml) and ThexylSiH ₃ (45.0 g,
0.39 mol) and cooled to 0 ° C.
₂ (104.9 g, 0.78 mol), CuI (1.5
6 g, 8.2 mmol) and stirred at room temperature for 48 hours. After the precipitate was filtered off, the solution was concentrated and distilled (distilled at 134 to 142 ° C.) to obtain TexylSiH ₂ Cl.
Was obtained (34.3 g, 0.23 mol). Next, 100
diethyl ether (50 ml) in a 2 ml two-necked flask,
ThexylSiH ₂ Cl (3.0 g, 19.9 mmol)
l) is charged, and while stirring, a separately prepared Cyclo is prepared.
PentylMgBr / THF (30.0 mmol) was added, and stirring was continued for 3 hours. Excessive Cyclopent
ylMgBr was hydrolyzed, and the organic layer was separated. It is concentrated and distilled under reduced pressure (80-150 ° C. fraction, 1.0 mmH
g), (Thexyl) (Cyclopentyl) Si
H ₂ was obtained (1.93 g, 10.3 mmol).

Subsequently, MeO was placed in a 50 ml two-necked flask.
H (10 ml) and Na (23 mg, 1.0 mg)
And (Thexyl) (Cyclopentyl)
SiH _Two(1.8 g, 9.8 mmol) was added. 48
After refluxing for hours, the mixture was concentrated and distilled under reduced pressure (fraction at 125 ° C., 1.0
mmHg), (Thexyl) (Cyclopenty)
l) Si (OMe)_Two(1.75 g, 7.1 mm
ol). The NMR spectrum of this product was measured.
The results are as follows.

Example 2 1,1,2-Trimethylpropyl-cyclohexyldimethoxysilane [(Thehexy
1) Synthesis of (Cyclohexyl) Si (OMe) ₂ ] Cycloh prepared separately in a 100 ml three-necked flask
exylMgBr / THF (37.9 mmol) was added thereto, and ThexylSi synthesized in the same manner as in Example 1 was added thereto.
H ₂ Cl / THF (3.0 g, 19.9 mmol) was added dropwise, and the mixture was stirred for 3 hours. Excess CyclohexylM
gBr was hydrolyzed, and the organic layer was separated. Concentrate it,
Distillation under reduced pressure (80-150 ° C fraction, 1.0 mmHg)
(Thexyl) (Cyclohexyl) SiH ₂ was obtained (2.33 g, 11.7 mmol). Then, 50m
MeOH (10 ml), Na (23
mg, 1.0 mg), and (Thexyl) (C
(cyclohexyl) SiH ₂ (2.2 g, 11.1 m)
mol) was added. After refluxing for 48 hours, the mixture was concentrated and distilled under reduced pressure (fraction at 125 to 135 ° C., 1.0 mmHg).
xyl) (Cyclohexyl) Si (OMe) ₂ was obtained (1.75 g, 6.8 mmol). NMR of this product
The result of spectrum measurement is as follows.

Example 3 (1) Preparation of Solid Catalyst Component In a 500-ml three-necked flask equipped with a stirrer and purged with nitrogen, 16 g of diethoxymagnesium (0.14 mol) was placed.
l) was added, and 60 ml of dehydrated heptane was added. Heated to 40 ° C. and 2.45 ml of silicon tetrachloride (22.
After stirring for 20 minutes, 12.7 mmol of di-n-butyl phthalate was added. The temperature of the solution was raised to 80 ° C., and 77 ml (0.70 mol) of titanium tetrachloride was subsequently added dropwise using a dropping funnel. The internal temperature was 110 ° C., and the mixture was stirred for 2 hours to perform a loading operation. Thereafter, washing was sufficiently performed using dehydrated heptane. Further, 122 ml (1.12 mol) of titanium tetrachloride was added, the internal temperature was set to 110 ° C., and the mixture was stirred for 2 hours to perform a second loading operation. Thereafter, the solid catalyst component was sufficiently washed with dehydrated heptane to obtain a solid catalyst component.

(2) Slurry polymerization of propylene A 1-liter stainless steel autoclave with a stirrer having an inner volume of 1 liter was sufficiently dried, and after replacement with nitrogen, 400 ml of dehydrated heptane was added to the inside. Further, 0.5 mmol of triethylaluminum, followed by 0.25 mm of 1,1,2-trimethylpropylcyclopentyldimethoxysilane
ol, the solid catalyst component was added in an amount of 0.005 mmol per titanium atom, and hydrogen gas was added at 1.0 kg / cm.
² G, followed by the introduction of propylene. The autoclave temperature was 80 ° C., the total pressure was 8 kg / cm ² G, and the temperature was 8
The polymerization was carried out at 0 ° C. for 2 hours. Thereafter, the temperature was reduced and the pressure was released, the contents were taken out, and the contents were poured into 2 liters of methanol, followed by vacuum drying to obtain polypropylene. Its catalytic activity, intrinsic viscosity [η], stereoregularity [mmmm] and M
w / Mn is shown in Table 1. The intrinsic viscosity [η] was measured at 135 ° C. after dissolving the polymer in decalin.
The stereoregularity [mmmm] was measured by dissolving the polymer in 1,2,4-trichlorobenzene and using ¹³ C-NMR (EX-400 manufactured by JEOL). Mw / Mn was measured using GPC (Waters 150C).

Example 4 (1) Preparation of Solid Catalyst Component The procedure was the same as in Example 1. (2) Slurry polymerization of propylene The procedure was the same as in Example 1 except that 1,1,2-trimethylpropylcyclohexyldimethoxysilane was added instead of 1,1,2-trimethylpropylcyclopentyldimethoxysilane. The results are shown in Table 1.

Comparative Example 1 (1) Preparation of Solid Catalyst Component The procedure was the same as in Example 1. (2) Slurry polymerization of propylene The same procedure as in Example 1 was carried out except that dicyclopentyldimethoxysilane was added instead of 1,1,2-trimethylpropylcyclopentyldimethoxysilane. The results are shown in Table 1.

Example 5 (1) Preparation of Solid Catalyst Component In a 500 ml three-necked flask equipped with a stirrer and purged with nitrogen, 13.3 g (0.1%) of magnesium chloride (anhydride) was added.
4 mol), 70 ml of decane and 65.5 ml (0.42 ml) of 2-ethylhexyl alcohol, and 13
A heating reaction was performed at 0 ° C. for 2 hours to obtain a homogeneous solution. afterwards,
3.12 g (0.021 mmol) of phthalic anhydride was added to this solution.
l) was added, and the mixture was further stirred and mixed at 130 ° C. for 1 hour to dissolve phthalic anhydride in the above homogeneous solution.

After the homogeneous solution thus obtained was cooled to room temperature, titanium tetrachloride 37 kept at -20 ° C was used.
The whole amount was dropped into 3 ml (3.36 mol) over 1 hour. After the dropwise addition, the temperature of the obtained homogeneous solution was raised to 110 ° C over 4 hours, and when the temperature reached 110 ° C, di-n-
5.39 ml (0.035 mol) of butyl phthalate was added, followed by stirring at 110 ° C. for 2 hours.

After completion of the reaction for 2 hours, a solid product was collected by hot filtration, resuspended in 275 ml of titanium tetrachloride, and heated again at 110 ° C. for 2 hours. . After the completion of the reaction, the solid product was collected again by filtration while hot, and washed with decane and hexane at 110 ° C.
This washing was performed until no titanium compound was detected in the washing solution, to obtain a solid catalyst component. (2) Slurry polymerization of propylene It was carried out in the same manner as in Example 1. The results are shown in Table 1.

[Example 6] (1) Preparation of solid catalyst component The same procedure as in Example 3 was carried out. (2) Slurry polymerization of propylene The same procedure as in Example 3 was carried out except that 1,1,2-trimethylpropylcyclohexyldimethoxysilane was added instead of 1,1,2-trimethylpropylcyclopentyldimethoxysilane. The results are shown in Table 1.

Comparative Example 2 (1) Preparation of Solid Catalyst Component The procedure was the same as in Example 3. (2) Slurry polymerization of propylene, granulation and evaluation The same procedure as in Example 3 was carried out except that dicyclopentyldimethoxysilane was added instead of 1,1,2-trimethylpropylcyclopentyldimethoxysilane. The results are shown in Table 1.

[0096]

[Table 1]

[0097]

The novel organosilicon compound of the present invention can be effectively used as a catalyst component for olefin polymerization. According to the method for producing an olefin polymer using the organosilicon compound of the present invention, it is possible to provide an olefin polymer having high catalytic activity, high stereoregularity, and a wide molecular weight distribution, particularly a polypropylene having this feature. .

[Brief description of the drawings]

FIG. 1 is a flowchart showing a process for preparing a catalyst component in the present invention.

Continuation of the front page (72) Inventor Go Ota 1-1, Anesaki Beach, Ichihara City, Chiba Prefecture (72) Inventor Toshio Isozaki 1, 1 Anesaki Beach, Ichihara City, Chiba Prefecture (72) Inventor Seiwa Katayama 1, Anesaki Beach 1, Ichihara City, Chiba Prefecture Address 1

Claims (4)

[Claims] 1. A compound of the general formula (I)(Where R¹And R^TwoIs an alkyl group having 1 to 20 carbon atoms
Which may be the same or different
You may. R^Three, R^Four, R^FiveAnd R⁶Is 1 to 3 carbon atoms
Represents an alkyl group, which may be the same,
They may be different from each other. R⁷Is a hydrogen atom or carbon number 1
Shows three alkyl groups. Also, R⁸, R ⁹, R^Tenas well as
R¹¹Represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.
And these may be the same, different from each other,
May form a ring with the following group. Organosilicon represented by)
Compound. 2. A compound of the general formula (II)(Where R¹And R^TwoIs an alkyl group having 1 to 20 carbon atoms
Which may be the same or different
You may. R^Three, R^Four, R^FiveAnd R⁶Is 1 to 3 carbon atoms
Represents an alkyl group, which may be the same,
They may be different from each other. R⁷Is a hydrogen atom or carbon number 1
Shows three alkyl groups. Also, R¹², R ¹³, R¹⁴, R
^Fifteen And R¹⁶Is a hydrogen atom or an alkyl having 1 to 10 carbon atoms
And these may be the same or different from each other
Then, a ring may be formed with an adjacent group. Yes represented by
Silicon compound. 3. A titanium compound, a magnesium compound and an electrode.
A solid catalyst component obtained by contacting and reacting a child donor,
Organoaluminum compound and general formula (I)(Where R¹And R^TwoIs an alkyl group having 1 to 20 carbon atoms
Which may be the same or different
You may. R^Three, R^Four, R^FiveAnd R⁶Is 1 to 3 carbon atoms
Represents an alkyl group, which may be the same,
They may be different from each other. R⁷Is a hydrogen atom or carbon number 1
Shows three alkyl groups. Also, R⁸, R ⁹, R^Tenas well as
R¹¹Represents a hydrogen atom or an alkyl group having 1 to 10 carbon atoms.
And these may be the same, different from each other,
May form a ring with the following group. Organosilicon represented by)
Compound or general formula (II)(Where R¹And R^TwoIs an alkyl group having 1 to 20 carbon atoms
Which may be the same or different
You may. R^Three, R^Four, R^FiveAnd R⁶Is 1 to 3 carbon atoms
Represents an alkyl group, which may be the same,
They may be different from each other. R⁷Is a hydrogen atom or carbon number 1
Shows three alkyl groups. Also, R¹², R ¹³, R¹⁴, R
^Fifteen And R¹⁶Is a hydrogen atom or an alkyl having 1 to 10 carbon atoms
And these may be the same or different from each other
Then, a ring may be formed with an adjacent group. Yes represented by
Using a catalyst consisting of a combination of organic silicon compounds,
It is characterized by performing polymerization or copolymerization of lefin
A method for producing an olefin polymer. 4. The method according to claim 3, wherein the olefin is propylene.
3. The method for producing an olefin polymer according to item 1.