WO2006022244A1 - マグネシウム化合物、固体触媒成分、オレフィン重合触媒及びポリオレフィンの製造方法 - Google Patents
マグネシウム化合物、固体触媒成分、オレフィン重合触媒及びポリオレフィンの製造方法 Download PDFInfo
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- C—CHEMISTRY; METALLURGY
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- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F3/00—Compounds containing elements of Groups 2 or 12 of the Periodic System
- C07F3/02—Magnesium compounds
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F3/00—Compounds containing elements of Groups 2 or 12 of the Periodic System
- C07F3/003—Compounds containing elements of Groups 2 or 12 of the Periodic System without C-Metal linkages
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
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- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
- C07C31/28—Metal alcoholates
- C07C31/30—Alkali metal or alkaline earth metal alcoholates
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/02—Carriers therefor
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
- C08F4/44—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides
- C08F4/60—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors selected from light metals, zinc, cadmium, mercury, copper, silver, gold, boron, gallium, indium, thallium, rare earths or actinides together with refractory metals, iron group metals, platinum group metals, manganese, rhenium technetium or compounds thereof
- C08F4/62—Refractory metals or compounds thereof
- C08F4/64—Titanium, zirconium, hafnium or compounds thereof
- C08F4/65—Pretreating the metal or compound covered by group C08F4/64 before the final contacting with the metal or compound covered by group C08F4/44
- C08F4/652—Pretreating with metals or metal-containing compounds
- C08F4/658—Pretreating with metals or metal-containing compounds with metals or metal-containing compounds, not provided for in a single group of groups C08F4/653 - C08F4/657
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F10/00—Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F10/04—Monomers containing three or four carbon atoms
- C08F10/06—Propene
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F110/00—Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond
- C08F110/02—Ethene
Definitions
- the present invention relates to a magnesium compound useful as a catalyst component used for homopolymerization or copolymerization of a-olefin such as ethylene and propylene, and a solid catalyst component, an olefin polymerization catalyst using the same, and a method for producing polyolefin. .
- Patent Document 1 Japanese Patent Laid-Open No. 63-280707
- Patent Document 2 Japanese Patent Laid-Open No. 58-811
- Patent Document 3 Japanese Patent Laid-Open No. 4-130107
- Patent Document 4 Japanese Laid-Open Patent Publication No. 9-194522
- the present invention has been made from the above viewpoint, exhibits high activity without deteriorating performance such as stereoregularity and film appearance (fish eye), has excellent controllability of molecular weight, and is a polymerization know-how. It is an object of the present invention to provide a magnesium compound, a solid catalyst component, an olefin polymerization catalyst, and a method for producing the olefin polymer that give an excellent olefin polymer such as bulk density of the olefin.
- metal magnesium, ethanol and methanol, and halogen containing a certain amount of halogen atoms and Z or nitrogen, containing a rogen It was found that it is useful as a specific magnesium compound catalyst component obtained by reacting a product as an essential component.
- the present olefin polymerization catalyst was found to have high catalytic activity and excellent molecular weight controllability, and furthermore, the bulk density of the polymer powder obtained using this catalyst was excellent, and the present invention was completed. .
- the present invention provides the following magnesium compound, solid catalyst component, olefin polymerization catalyst, and method for producing the olefin polymer.
- Et is an ethyl group
- Me is a methyl group
- n is 0.001 to 1.
- D is the particle size corresponding to a cumulative weight fraction of 90% and D is the cumulative weight fraction of 10%.
- X is a halogen atom
- R is a hydrocarbon group having 1 to 10 carbon atoms
- q is an integer of 0 to 4.
- plural Rs may be the same or different.
- the solid catalyst component according to 6 obtained by reacting (a), (b), (c) a halide, and Z or (e) an alcohol.
- An olefin polymerization catalyst comprising (A) the solid catalyst component according to any one of 6 to 10 above and (B) an organometallic compound.
- the bulk density and morphology of the polymer and the resulting polymer powder! A polymer can be produced.
- FIG. 1 is a diagram showing a configuration of an olefin polymerization catalyst system of the present invention.
- FIG. 1 is a diagram showing the configuration of an olefin polymerization catalyst system containing a magnesium compound of the present invention.
- the magnesium compound of the present invention, the solid catalyst component, and the olefin polymerization catalyst will be described in this order.
- the magnesium compound of the present invention can be obtained by reacting metal magnesium, ethanol, methanol, and a halogen containing a halogen atom in an amount of 0.0001 gram atom or more with respect to magnesium and Z or a halogen-containing compound represented by the following formula (I )
- Et is an ethyl group
- Me is a methyl group
- n is 0.001 to 1.
- the shape, surface state and the like of the metallic magnesium used in the present invention are not particularly limited, but it is preferable that a coating of magnesium hydroxide or the like is generated on the surface.
- ethanol and methanol (hereinafter, both may be collectively referred to as alcohol), their purity and water content are not particularly limited, but if alcohol with a high water content is used, the surface of metallic magnesium There is a risk of producing magnesium hydroxide. Accordingly, it is preferable that the water content is 1% or less, and it is particularly preferable to use alcohol having 2000ppm or less.
- the amount of water is less. Is desirable.
- any compound containing a halogen atom in its chemical formula can be used as long as it contains any halogen atom in the chemical formula.
- the type of halogen atom is not particularly limited, but is preferably chlorine, bromine or iodine.
- halogen-containing compounds halogen-containing metal compounds are particularly preferred.
- halogen-containing compound examples include MgCl, Mgl, Mg (OEt) Cl, Mg (OEt
- halogen-containing compounds are not particularly limited.
- it can be used in a solution in an alcohol solvent (eg, ethanol).
- halogen and halogen-containing compounds may be used alone or in combination of two or more. Further, a halogen and a halogen-containing compound may be used in combination.
- the method of reacting metallic magnesium, alcohol, halogen and Z or a halogen-containing compound should be carried out in the same manner as a known method except that the alcohol is used in combination with ethanol and methanol. Can do. That is, it is a method of obtaining a magnesium compound by reacting until generation of hydrogen gas is not observed (usually 4 to 30 hours).
- the reaction format may be either batch type or continuous type.
- the reaction temperature is not particularly limited, but is preferably 70 ° C. or higher from the viewpoint of activity expression and molecular weight controllability.
- reaction methods also include an inert gas (eg, nitrogen gas, argon gas) atmosphere. It is preferably carried out under air using an inert organic solvent (for example, a saturated hydrocarbon such as n-hexane).
- an inert gas eg, nitrogen gas, argon gas
- an inert organic solvent for example, a saturated hydrocarbon such as n-hexane
- a particularly preferred embodiment is a method in which a mixed solution of ethanol and methanol, a halogen and / or a halogen-containing compound are initially charged in the whole amount, and metallic magnesium is added in several portions.
- a temporary mass generation of hydrogen gas can be prevented, and safety is also very desirable. It is also possible to reduce the size of the reaction tank. In addition, it is possible to prevent the entrainment of alcohol and alcohol that is caused by a temporary large-scale generation of hydrogen gas.
- the number of divisions is not particularly limited as long as the scale of the reaction tank is taken into consideration, but 5 to 10 times is usually preferable in view of the complexity of the operation.
- a halogen and Z or a halogen-containing compound in which all of the initial force is charged, ethanol, methanol, and metal magnesium are first charged in small amounts, and the product produced by the reaction is separated into another tank. After removal, it is possible to repeat the operation of adding a small amount of magnesium metal again.
- the total use amount of ethanol and methanol is preferably 2 to: LOO mol, particularly preferably 5 to 50 mol, per 1 mol of metal magnesium. If the amount is more than 100 mol, the yield of a magnesium compound having a good morphology (particle size distribution, shape) may be reduced. If the amount is less than 2 mol, stirring in the reaction vessel may not be performed smoothly. There is.
- the ratio of methanol to the total amount of ethanol and methanol used may be adjusted as appropriate so that n in the above formula (I) is an appropriate value.
- n in the above formula (I) is an appropriate value.
- it should be 0.05 mol% to 50 mol%.
- it is preferred instrument 0.5 mole% to 20 mole 0/0 and particularly preferably more preferably tool 0.5 mole 0/0 to 10 mol%.
- the amount of halogen used is at least 0.0001 gram atoms, preferably at least 0.0005 gram atoms, more preferably at least 0.001 gram atoms per mole of metal magnesium. When the amount is less than 0001 gram atoms, the amount of halogen used is not much different from the amount used as a reaction initiator. When the obtained magnesium compound is used as a catalyst support, the activity and the morphology of the produced polymer are poor.
- the upper limit of the amount of halogen used is not particularly defined. It may be appropriately selected within the range in which the magnesium compound referred to in the present invention can be obtained. In general, it is chosen in the range of less than 0.06 gram atoms.
- the halogen-containing compound is used in an amount of 0.0001 gram atom or more, preferably 0.0005 gram atom or more, based on 1 mol of metal magnesium. More preferably, it is 0.001 gram atom or more.
- the upper limit of the amount of the halogen-containing compound used is not particularly defined, but may be appropriately selected within the range in which the magnesium compound referred to in the invention can be obtained. Generally, it is selected in the range of less than 0.06 gram atoms.
- the total halogen atom amount is 0.0001 gram atom or more, preferably 0.0005 gram atom or more, relative to 1 mol of metal magnesium. More preferably, it is 0.001 gram atom or more.
- the upper limit of the amount of halogen and Z or halogen-containing compound used is not particularly defined, but may be appropriately selected within the scope of obtaining the magnesium compound in the invention. In general, it is preferably less than 0.06 gram atoms.
- the particle size of the magnesium compound can be freely controlled by appropriately selecting the amount of halogen and Z or halogen-containing compound used.
- the magnesium compound obtained by the above reaction is in a solid form and is substantially a magnesium alkoxide represented by the following formula (I).
- OMe is agglomerated to form a substantially spherical surface, and also includes a halogen-magnesium alcohol complex such as Mgl.
- impurities are Even if it is included, if the purity of Mg (OC H) (OMe) is 95% or more, this
- the preferred purity is 98% or more, more preferably 99% or more.
- composition of this magnesium compound is Mg (OEt) (OMe) to Mg (OEt) (O
- n in formula (I) is more preferably 0.01-0.5, particularly preferably 0.01-0.2.
- compositions and form of the solid catalyst component fall within a suitable range, so that the activity is remarkably improved, and in ethylene-based polymerization, chain transfer by hydrogen proceeds efficiently.
- the obtained polymer powder reflects the shape of the carrier particles, but the point is that fine plate crystals are densely aggregated to form uniform and spherical carrier particles within the same composition range. These tendencies are particularly remarkable when the reaction temperature is 70 ° C or higher.
- the obtained magnesium compound is used as a solid catalyst component, a dried product may be used, or after filtration and washing with an inert solvent such as heptane.
- the obtained magnesium compound can be used in the following steps without performing a pulverization or classification operation to make the particle size distribution uniform.
- the shape of the magnesium compound of the present invention is almost spherical, and the particle size distribution is sharp. Furthermore, even if each particle is caught, the variation in sphericity is small.
- These Mg compounds may be used alone or in combination of two or more. Further, it may be used as a mixture with halogen or the like, which may be supported on a support such as silica, alumina, or polystyrene.
- the magnesium compound of the present invention preferably has an average particle diameter D force of ⁇ 20 ⁇ m
- the particle size distribution index (P) expressed by the following formula (1) is P ⁇ 4.0.
- the solid catalyst component of the present invention comprises (a) the magnesium compound of the present invention described above, (b) a titanium compound, and, if necessary, (c) a halogen compound and Z or (d) an electron donating compound. Or (c) a halide and Z or (e) an alcohol.
- the power to explain each component (a) The magnesium compound has been described above and is omitted here.
- the titanium compound is not particularly limited, but a compound represented by the following formula (II) can be preferably used.
- X is a halogen atom
- R is a hydrocarbon group having 1 to 10 carbon atoms
- q is an integer of 0 to 4.
- plural Rs may be the same or different.
- X a chlorine atom and a bromine atom are preferable, and a chlorine atom is particularly preferable.
- R may be a saturated or unsaturated group, a straight chain, a branched chain, or a cyclic group, particularly an alkyl group, a alkenyl group, A straight chain or branched chain alkyl group is particularly preferable, in which a cycloalkenyl group, an aryl group, an aralkyl group, and the like are preferable.
- R examples include methyl, ethyl, n-propyl, isopropyl, n-butyl, sec-butyl, isobutyl, n-pentyl, n-hexyl, n —Heptyl group, n-octyl group, n-decyl group, aryl group, butyl group, cyclopentyl group, cyclohexyl group, cyclohexyl group, phenyl group, tolyl group, benzyl group, phenyl group Etc.
- halogen-containing titanium compound represented by the above formula ( ⁇ ⁇ ⁇ ) include tetramethoxy titanium, tetraethoxy titanium, tetra-n-propoxy titanium, and tetraisopropoxy tita.
- Tetraalkoxytitanium such as titanium, tetra-n-butoxytitanium, tetraisobutoxytitanium, tetracyclohexyloxytitanium and tetraphenoxytitanium; tetrahalogenated titanium such as tetrasalt ⁇ titanium, titanium tetrabromide and titanium tetraiodide ⁇ Titanium; Trihalogenated alkoxytitanium such as methoxytitanium trichloride, ethoxytitanium trichloride, propoxytitanium trichloride, n-butoxytitanium trichloride, ethoxytitantribromide; dimethoxytitanium dichloride, jetoxytitanium dichloride, diisopropoxytitanium dichloride, G n Dihalogenated dialkoxytitanium such as propoxytitanium dichloride and diethoxytitan
- a high halogen-containing titanium compound particularly tetrasalt titanium, is preferable.
- These titanium compounds can be used alone or in combination of two or more.
- metal and rogenide examples include silicon tetrachloride, silicon tetrabromide, tin tetrachloride, hydrogen chloride, and the like. These halogenated compounds may be used alone or in combination of two or more.
- the stereoregularity of the obtained olefin polymer is preferably improved.
- electron donating compounds include alcohols, phenols, ketones, aldehydes, carboxylic acids, malonic acids, succinic acids, esters of organic or inorganic acids, ethers such as monoethers, diethers or polyethers. And oxygen-containing electron donors such as ammonia, ammine, nitrile, and isocyanate.
- esters of polyvalent carboxylic acids are preferable, and esters of aromatic polycarboxylic acids are more preferable. From the viewpoint of polymerization activity, aromatic dicarboxylic acid monoesters and z or diesters are particularly preferred.
- an aliphatic hydrocarbon having a linear, branched or cyclic organic group in the ester portion is preferable.
- phthalic acid naphthalene 1,2 dicarboxylic acid, naphthalene 2,3 dica Rubonic acid, 5, 6, 7, 8—Tetrahydronaphthalene— 1,2 Dicarboxylic acid, 5, 6, 7, 8— Tetrahydronaphthalene 2,3 Dicanolevonic acid, Indan 4,5 Dicanolevonic acid, Indan—5, 6— Dicarboxylic acids such as dicarboxylic acid methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, t-butyl, n-pentyl, 1-methylbutyl, 2-methylbutyl, 3-methylbutyl, 1,1-dimethylpropyl, 1 -Methylpentyl, 2-Methylenopentinole, 3-Methylpentyl, 4-Methylpentyl, 1-Ethenolevbutenore, 2Etheno
- dialkyl esters such as 3-ethylhexyl, 4-ethylhexyl, 2-methylpentyl, 3-methylpentyl, 2-ethylpentyl, and 3-ethylpentyl.
- phthalic acid diesters are preferable, and linear or branched aliphatic hydrocarbons having an organic group of several carbon atoms or more in the ester portion are preferable.
- di n-butyl phthalate diisobutyl phthalate, di-n-heptyl phthalate, and jetyl phthalate. These compounds can be used alone or in combination of two or more.
- alcohol is used as necessary.
- a linear or branched aliphatic alcohol or an aliphatic cyclic alcohol can be used.
- Specific examples include methanol, ethanol, propanol, isopropanol, butanol, isobutanol, amyl alcohol, octanol, cyclopentanol, and cyclohexanol. Of these, isopropanol is particularly preferred.
- the preparation method of the solid catalyst component includes the above-mentioned (a) magnesium compound, (b) titanium compound, if necessary (c) halide, and further (d) electron donating compound.
- ( e ) alcohol may be contacted and reacted, but it is preferable to contact and react with the following amounts, conditions and procedures.
- the amount of the (b) titanium compound used is usually in the range of 0.5 to: L00 monole, preferably 1 to 50 monole, with respect to 1 monomole of the magnesium compound (a). It ’s good! / (c)
- the amount of halide used is usually in the range of 0.01 to 10 monolayers, preferably 0.1 to 2 monolayers with respect to 1 mol of magnesium in ( a ) magnesium compound! /.
- the amount of the electron-donating compound used is usually in the range of 0.01 to 10 monolayers, preferably 0.05 to 0.15 monolayers per 1 mol of magnesium of the (a) magnesium compound. It is good to use it.
- the amount of alcohol used is usually in the range of 0.1 to 1 monole, preferably 0.2 to 0.8 monole with respect to 1 mol of magnesium of (a) magnesium compound! /, .
- the contact temperature of each component is usually 20 to 200 ° C, preferably 20 to 150 ° C, and the contact time is usually 1 minute to 24 hours, preferably 10 It should be in the range of minutes to 6 hours.
- each component may be contacted in the presence of an inert solvent such as a hydrocarbon!
- the components may be diluted with an inert solvent such as a hydrocarbon and brought into contact with each other in advance.
- the inert solvent include aliphatic hydrocarbons such as n-pentane, isopentane, n-hexane, n-heptane, n-octane and isooctane; aromatic hydrocarbons such as benzene, toluene and xylene; Can be mentioned.
- the titanium compound is contacted twice or more and is sufficiently supported on the magnesium compound that serves as a catalyst carrier.
- the solid catalyst component obtained by the above contact may be washed with an inert solvent such as hydrocarbon.
- an inert solvent such as hydrocarbon.
- the inert solvent those described above can be used.
- the cleaning method there are no particular restrictions on the cleaning method, but decantation, filtration, and the like are preferred. There are no particular restrictions on the amount of inert solvent used, the washing time, and the number of washings, but it is usually 100,000 to 100,000 ziles, preferably ⁇ 1000 to 50,000 milliliters for one monolith of magnesium compound.
- the solvent is usually used for 1 minute to 24 hours, preferably 10 minutes to 6 hours. If this ratio deviates from the above range, cleaning may be incomplete.
- the pressure during washing varies depending on the type of solvent, washing temperature, etc., but is usually 0 to 50 kgZcm 2 G, preferably 0 to L0 kgZcm 2 G. Further, during the cleaning operation, it is preferable to carry out stirring in consideration of the uniformity of cleaning and the cleaning efficiency.
- the solid catalyst component can also be stored in a dry state or in an inert solvent such as a hydrocarbon.
- the solid catalyst component (A) useful for the ethylene polymerization method includes a magnesium compound (a), a titanium compound (b), a halogenated compound (c) if necessary, and further, if necessary.
- the alcohol ( e ) may be contacted and reacted, but it is preferable to contact and react with the following amounts, conditions and procedures.
- the magnesium compound is dispersed in an inert solvent.
- the inert solvent various solvents such as aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons and the like can be used as long as they are inert to the magnesium compound and the solid catalyst component. .
- butane, pentane, hexane, heptane, octane, cyclohexane, tolylene, ethylbenzene and the like are preferable.
- the amount of magnesium compound added is not particularly limited, but it is preferable to use 50 to 500 g per liter of solvent for convenience of operation!
- a titanium compound is added to this dispersion, and the reaction is carried out with stirring at a temperature of 0 to 200 ° C, preferably 50 to 150 ° C under normal pressure or pressure.
- the addition amount of the titanium compound is usually equimolar or more with respect to the magnesium compound (number of moles of magnesium). Preferably, it is 1 to 20 times mol or more, particularly preferably 1.5 to: LO times mol amount.
- the reaction time is usually 5 minutes to 10 hours, preferably 30 minutes to 8 hours.
- the magnesium compound is dispersed in an inert solvent.
- This inert solvent is the same as described above.
- this dispersion system is reacted with a halogen compound and, if necessary, an alcohol with stirring at a predetermined temperature for a time to denature the magnesium compound.
- the amount of applied force of the halogen compound is as follows:
- the (atomic ratio) is usually 1.5 or less, preferably 0.2 to 1.5, and particularly preferably 0.5 to 1.5. Outside this range, activity, hydrogen sensitivity, and powder form may be deteriorated, which is not preferable.
- the alcohol loading is usually OH Z magnesium (atomic ratio) of 0.1 or more with respect to the magnesium compound. About the upper limit of this addition amount Although there is no limit, the use of a large amount is a waste of titanium compound, so 1 is usually used as a guide for OHZ halogen (atomic ratio) to halogen compound. If the amount of alcohol used is less than this, it is not possible to expect sufficient improvement in polymerization activity or bulk density of the polymer.
- the reaction temperature is usually 0 to 150 ° C, preferably 20 to 100 ° C.
- the reaction time is a force depending on the reaction temperature, usually 5 minutes to 5 hours, preferably 30 minutes to 3 hours.
- the order of contacting the compounds in the above reaction is not particularly limited.
- each component may be contacted in the presence of an inert solvent such as hydrocarbons, or each component may be diluted and contacted with an inert solvent such as hydrocarbons in advance.
- a titanium compound is further added, and the reaction is carried out with stirring at a temperature of 0 to 200 ° C, preferably 50 to 150 ° C under normal pressure or pressure.
- the amount of added force of the titanium compound should be at least equimolar, preferably an excess amount, relative to the magnesium compound (number of moles of magnesium). Specifically, it is 1 to 20 times mol or more, preferably 1.5 to 10 times mol.
- the reaction time is usually 5 minutes to 10 hours, preferably 30 minutes to 8 hours.
- the solid catalyst component is separated and washed from the reaction product.
- various solvents such as aliphatic hydrocarbons, alicyclic hydrocarbons, aromatic hydrocarbons and the like can be used as long as they are inert to the solid catalyst component.
- butane, pentane, hexane, heptane, octane, cyclohexane, toluene, ethylbenzene and the like are preferable.
- the washing method is not particularly limited, but a method such as decantation or filtration is preferable.
- the obtained solid catalyst component can be stored in a dry state or in an inert solvent such as hydrocarbon.
- the olefin polymerization catalyst of the present invention comprises (A) a solid catalyst component, (B) an organometallic compound, and (C) an electron donating compound as required.
- an organoaluminum compound can be used as the organometallic compound used in the present invention.
- an organoaluminum compound can be used.
- the thing which has an alkyl group, a halogen atom, a hydrogen atom, an alkoxy group, an aluminoxane, and mixtures thereof can be used preferably.
- trialkylaluminum such as trimethylaluminum, triethylaluminum, triisopropylaluminum, triisobutylaluminum, trioctylaluminum
- jetylaluminum monochloride diisopropylaluminum monochloride, diisobutylaluminum monochloride
- dialkyl aluminum monochlorides such as dioctyl aluminum monochloride, alkylaluminum sesquihalides such as ethyl aluminum sesquichloride, and chain aluminoxanes such as methylaluminoxane.
- organoaluminum compounds include trialkylaluminum having a lower alkyl group having 1 to 5 carbon atoms, particularly trimethylaluminum, triethylaluminum, tripropylaluminum and triisobutylaluminum are preferred. These organoaluminum compounds may be used alone or in combination of two or more.
- the use of an electron donating compound is preferable because the stereoregularity of the olefin polymer obtained is improved.
- an organic silicon compound having an alkoxy group, a nitrogen-containing compound, a phosphorus-containing compound, or an oxygen-containing compound can be used. Of these, especially It is preferable to use an organic silicon compound having a alkoxy group.
- organic silicon compound having an alkoxy group examples include trimethylmethoxysilane, trimethylethoxysilane, triethylmethoxysilane, triethylethoxysilane, dimethylenoresimethoxysilane, dimethylenoletoxysilane, ethylisopropyldimethoxysilane, dimethoxy.
- Silane isopropylisobutyldimethoxysilane, tert-butyldimethoxysilane, tert-butylmethyldimethoxysilane, tert-butyldimethoxysilane, tert-butyldimethoxysilane, tert-butylisobutyldimethoxysilane, tert-butyl (s-butyl) dimethoxy Silane, t-butylamyldimethoxysilane, t-butylhexyldimethoxysilane, t-butylheptyldimethoxysilane, t-butyloctyldimethoxysilane, tert-butylnordidimethyl Kishishiran, t- butyl decyl dimethoxysilane, t- butyl (3, 3, 3-Doo
- trimethoxysilane I - ⁇ amino propyl triethoxy silane, 1, 1, 2-trimethyl-propyl trimethoxy silane, 1, 1, 2-trimethyl-propyl isopropyl borate alkoxy silane 1, 1, 2-trimethylpropyl (t-butoxy) dimethoxysilane, tetramethoxysilane, tetraethoxysilane, tetrabutoxysilane, tetraisobutoxysilane, ketyl ethyl, butyl cate, trimethylphenoxysilane, methyltri Examples include allyloxy silane, buturetris (methoxyethoxy) silane, butris trisacetoxy silane, dimethyltetraethoxydisiloxane, and the like.
- organic key compounds may be used alone or in combination of two or more.
- an organocaine compound having an alkoxy group a silicon compound not having a Si OC bond and an organic compound having an OC bond are reacted in advance, or by reacting during polymerization of olefin, Si
- An organic silicon compound having an OC bond can be mentioned. Specific examples include those obtained by reacting tetrasalt silicate and alcohol.
- nitrogen-containing compounds include 2,6 diisopropylpiperidine, 2,6 diisopropylpropyl 4-methylbiperidine, N-methyl 2, 2, 6, 6-tetramethylpiperidine, etc.
- Piperidines 2, 5 Diisopropyl azolidines, N-methyl 2, 2, 5, 5— Tetramethyl azolidines and other 2,5-substituted azolidines; N, N, ⁇ ', ⁇ , monotetramethylmethylenediamine , ⁇ , ⁇ , ⁇ ', ⁇ , substituted methylene diamines such as one tetraethino remethylene diamine; 1,3 dibenzylimidazolidine, 1,3 dibenzyl-2 ferro-imidazoli Examples thereof include substituted imidazolidines such as gin.
- phosphorus-containing compounds include triethyl phosphite, tri n-propyl phosphite, triisopropyl phosphite, tri n-butyl phosphite, triisobutyl phosphite, jetyl n -butyl phosphite, jetyl phosphate.
- -Phosphites such as ruphosphite.
- oxygen-containing compound examples include 2, 5, 5, 5-tetramethyltetrahydrofuran, 2, 2, 5, 5-tetraethyltetrahydrofuran, 2, 5-substituted tetrahydrofurans; 2,6-Substituted tetrahydrofurans such as 6-tetramethyltetrahydrofuran, 2, 2, 6, 6-tetraethyltetrahydrofuran; 1, 1, -dimethoxy-1,2,3,4,5-tetrachlorocyclopentagen, 9, 9— And dimethoxymethane derivatives such as dimethoxyfluorene and diphenyldimethoxymethane.
- each catalyst component used in the present invention is not particularly limited, but (A) the solid catalyst component is usually from 0.000005 to 1 ⁇ m per liter of reaction volume in terms of titanium atoms. An amount that is in the range of remoles is used.
- the (B) organometallic compound is used in such an amount that the metal Z titanium atomic ratio is usually 1 to: LOOO, preferably 10 to 500. When this atomic ratio deviates from the above range, the catalyst activity may be insufficient.
- the molar ratio of (C) electron donating compound Z (B) organometallic compound is usually 0.001 to 5.0, preferably 0.01-2.0, more preferably 0.05-: an amount that is in the range of L 0 is used. If the molar ratio deviates from the above range, sufficient catalytic activity and stereoregularity may not be obtained. However, it can be further reduced when prepolymerization is performed.
- olefin is polymerized using the above-mentioned olefin polymerization catalyst.
- a-olefins represented by the following formula (III) are preferable.
- R 1 is a hydrogen atom or a hydrocarbon group.
- the hydrocarbon group may be a saturated group or an unsaturated group, a linear group, a branched chain group, or a cyclic group.
- These olefins may be used alone or in combination of two or more. Of these olefins, ethylene and propylene are particularly preferable.
- polystyrene resin There are no particular restrictions on the type of polymerization in polyolefin polymerization, which can be applied to any of solution polymerization, slurry polymerization, gas phase polymerization, Balta polymerization, etc., and further applicable to both batch polymerization and continuous polymerization. It can be applied to two-stage polymerization and multistage polymerization under different conditions.
- the polymerization pressure is usually from atmospheric pressure to 8 MPa, preferably from 0.2 to 5 MPa
- the polymerization temperature is usually from 0 to 200 ° C. Is appropriately selected within the range of 30 to 100 ° C.
- the polymerization time depends on the type of olefins as a raw material and the polymerization temperature, and cannot be determined unconditionally, but is usually 5 minutes to 20 hours, preferably about 10 minutes to 10 hours.
- olefins are preliminarily polymerized as desired, and then this polymerization is performed. May be.
- olefin is usually added in the presence of a catalyst obtained by mixing (A) a solid catalyst component, (B) an organometallic compound, and, if necessary, (C) an electron donating compound in a predetermined ratio.
- Prepolymerization is carried out at a temperature in the range of ⁇ 100 ° C. at a pressure of from about normal pressure to about 5 MPa, and then olefin is superpolymerized in the presence of the catalyst and the prepolymerized product.
- the molecular weight of the polyolefin can be adjusted by adding a chain transfer agent, preferably hydrogen. There may be an inert gas such as nitrogen!
- the catalyst component in the present invention may be polymerized by immediately mixing and mixing the above-mentioned components (A), (B) and (C) at a predetermined ratio and bringing them into contact with each other.
- olefin may be introduced for polymerization.
- this catalyst component can be supplied in a suspended state in an inert solvent, such as zeolite.
- the post-treatment after polymerization can be performed by a conventional method. That is, in the gas phase polymerization method, after polymerization, a polymer gas powder that is also derived from the polymerization vessel may be passed with a nitrogen stream or the like in order to remove the polyolefin contained in the polymer powder. Depending on the conditions, pellets may be removed by an extruder, and a small amount of water, alcohol or the like can be added to completely deactivate the catalyst. In addition, in the polymerization method, after polymerization, the polymer force, which is derived from the polymerization vessel force, can completely separate the monomers and then pelletize.
- R 2 is a hydrocarbon group, which may be a saturated group or an unsaturated group, may be linear or branched, or may be cyclic. Specifically, propylene, 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene, 1-decene, 3-methyl-1 pentene, 4-methyl-1 pentene, vinylcyclohexane, butadiene, isoprene, And piperylene. 1-butene, 1-pentene, 1-hexene, 1-heptene, 1-octene and 1-decene are preferred. One kind of these ⁇ -olefins may be used, or two or more kinds may be used in combination. The amount of olefins introduced is usually in the range of 0.2 to 5% by weight with respect to ethylene.
- the polymerization method and its conditions are not particularly limited and can be applied by any of solution polymerization, suspension polymerization, and gas phase polymerization, and can be either continuous polymerization or discontinuous polymerization. It is also applicable to two-stage polymerization and multistage polymerization.
- the amount of the catalyst component used is not particularly limited, but solution polymerization or suspension polymerization is taken as an example.
- the solid catalyst component (A) is used in an amount usually in the range of 0.000005 to 1 mmol per liter of reaction volume in terms of titanium atoms, and the organoaluminum compound (B) is aluminum /
- An amount is usually used in which the titanium atomic ratio is in the range of 5 to: LOOO, preferably 15 to 200.
- (A) component and (B) component may be mixed at a predetermined ratio and brought into contact with each other, and then ethylene and olefin may be introduced immediately for polymerization.
- polymerization may be carried out by introducing ethylene or olefin.
- the ethylene pressure in the reaction system is usually normal pressure to 10 MPa, preferably 0.5 to 5 MPa, and the reaction temperature is usually 20 to 200. C, preferably 50-150. C.
- the reaction time is usually 5 minutes to 10 hours, preferably 30 minutes to 5 hours.
- the molecular weight can be adjusted to some extent depending on the polymerization conditions such as polymerization temperature, catalyst concentration, and catalyst molar ratio, but it is more effective to carry out the polymerization in the presence of hydrogen.
- the magnesium compound and polyolefin produced in Examples and the like were evaluated by the following methods.
- the dried magnesium compound was photographed with a scanning electron microscope (JEOL Ltd. 3 ⁇ 4iSM-25S III) at an acceleration voltage of 5 KV and 150 times to obtain a negative.
- this negative was image processed by the transmission method.
- Image processing is performed on an image analysis device (Nexsus), cutting particles of 20 pixels or less (1 pixel is 1. 389 / z mX l. 389 m) and about 2000 remaining particles. Find the longest diameter L and L of the circle equal to the projected area in the projected view of the particle.
- the particle size was measured by the light transmission method in a state where the magnesium compound was suspended in the hydrocarbon.
- the obtained particle size distribution was plotted on log-normal probability paper, and the 50% particle size was obtained as the average particle size (D).
- the 90% particle size (D) and 10% particle size (D) were obtained,
- the diameter distribution index was calculated by the following formula (2).
- the particle size distribution index ( ⁇ ') is obtained by plotting the particle size distribution measured using a sieve on log-normal probability paper, taking the 50% particle size as the average particle size (D'), and the 90% particle size (D ') And 10% particle size (D
- the isotactic pentad fraction [mmmm] used in the present invention is based on the 13 C nuclear magnetic resonance spectrum proposed in “Macromolecules, 6, 925 (1973)” by A. Zambelli et al. This means the isotactic fraction of pentad units in the measured polypropylene molecular chain.
- the method of determining the attribution of peaks in the measurement of the 13 C nuclear magnetic resonance spectrum was in accordance with the attribution proposed in “Macromolecules, 8, 687 (1 975)” by A. Zambelli et al.
- a value (kgZg-Cat) obtained by dividing the weight of polypropylene obtained by a predetermined slurry polymerization method by the weight of the solid catalyst component used was defined as activity.
- the polymer obtained was dried and added with additives (Ilganox 1010: 360 ppm, Ilgakraft 16 8: 900ppm and calcium stearate: 2400ppm (Ciba Specialty Chemicals Co., Ltd.) and DHT-4A: 200ppm (Kyowa Chemical Industry Co., Ltd.)) : 180-190 ° C), and then formed into a film with a 20 ⁇ single-axis inflation molding machine (molding temperature: 185-195 ° C, thickness: 6 / ⁇ ⁇ , blow ratio: 1.5). Three 10 x 10 cm films were sampled from the film and evaluated by visually counting the total number of fish eyes.
- Slurry polymerization was performed using propylene as the olefin.
- a stainless steel autoclave with a stirrer with an internal volume of 1 liter is thoroughly dried and nitrogen-substituted. Later, 400 ml of heptane dehydrated inside was collected. Further, 2.0 mmol of triethylaluminum followed by 0.25 mmol of dicyclopentyldimethoxysilane was added, 0.265 mmol of the solid catalyst component prepared in (2) was added per Ti, and hydrogen was introduced into IMPa. Subsequently, propylene was introduced. The polymerization was carried out at a total pressure of 0.8 MPa and a temperature of 80 ° C for 1 hour. Thereafter, the temperature was lowered and the pressure was removed, the contents were taken out, put into 2 liters of methanol, and vacuum dried to obtain polypropylene.
- Table 1 shows the evaluation results regarding the formulation, reaction conditions, and the form of the compound obtained in Example 1 and the examples and comparative examples described later when preparing the magnesium compound. Table 1 also shows the performance of the catalyst and the evaluation of the obtained polypropylene.
- Example 1 Example 2
- Example 3 Example 4
- Example 5 Example 6
- Example 7 Comparative Example 1 Comparative Example 2 Comparative Example 3
- Mouth wm 350 350 525 350 350 350 350 1500 350 350 330 Item fcr ⁇ No No No No No No No No No Yes n 0.02 0.02 0.02 0.05 0.13 0,34 0.05 0.00 2.00 0.00
- Heavy 50% particle monster (D 50 ') (. Fi m) 1580 1530 1080 1610 1250 1 100 1310 760 Mouth Bulk density (AD) ( ⁇ / m!) 0.35 0.36 0.41 0.38 0.39 0.41 0.31 0.28
- the blending amount of ethanol and methanol is indicated by the molar ratio to metal magnesium (ethanol or methanol / Mg).
- halogen species ZMg The amount of halogen species (norogen or halogen-containing compound) is expressed in terms of gram atomic ratio to metal magnesium (halogen species ZMg).
- n represents the value of n in formula (I).
- the magnesium compound was prepared in the same manner as in Example 1 except that 0.45 g (9.5 milligram atoms) of anhydrous sodium chloride was used instead of iodine.
- the magnesium compound was prepared in the same manner as in Example 1 except that 0.36 g (2.8 milligram atoms) of iodine, a reaction temperature of 50 ° C., and a stirring speed of 525 rpm were used.
- the magnesium compound was prepared in the same manner as in Example 1 except that ethanol was 225 ml (3.83 mol) and methanol 5.0 ml (0.12 mol).
- the magnesium compound was prepared in the same manner as in Example 1 except that ethanol 217 ml (3.70 mol) and methanol 10 ml (0.25 mol) were used.
- the magnesium compound was prepared in the same manner as in Example 1 except that ethanol 203 ml (3.46 mol) and methanol 20 ml (0.49 mol) were used.
- a stainless steel autoclave with a stirrer with an internal volume of 7 liters was thoroughly dried, purged with nitrogen, and then 2.5 liters of hexane, which had been dehydrated inside, was collected. Further, 2.5 mmol of triethyl aluminum and 0.25 mmol of the solid catalyst component obtained in the above (2) were added in terms of titanium atom, and 0.3 MPa of hydrogen was introduced, and ethylene was adjusted so that the total pressure was 0.55 MPa.
- 1st activity is the activity of the first stage polymerization
- lstMI is Ml of the polymer obtained by the first stage polymerization.
- the magnesium compound was prepared in the same manner as in Example 1 except that methanol was not added and ethanol was 232 milliliters (3.95 mol).
- the magnesium compound was prepared in the same manner as in Example 1, except that ethanol was not added and methanol was 160 milliliter (3.95 mol).
- Example 6 The procedure was the same as (3) except that the solid catalyst component (2) was used. The results are shown in Table 1.
Abstract
Description
Claims
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JP2006531907A JPWO2006022244A1 (ja) | 2004-08-24 | 2005-08-23 | マグネシウム化合物、固体触媒成分、オレフィン重合触媒及びポリオレフィンの製造方法 |
US11/573,047 US20070213206A1 (en) | 2004-08-24 | 2005-08-23 | Magnesium compound, solid catalyst component, olefin polymerization catalyst, and method for producing polyolefin |
EP05780880A EP1783109A4 (en) | 2004-08-24 | 2005-08-23 | MAGNESIUM COMPOUND, SOLID CATALYST COMPONENT, OLEFIN POLYMERIZATION CATALYST, AND METHOD FOR MANUFACTURING POLYOLEFIN |
US12/408,926 US7871951B2 (en) | 2004-08-24 | 2009-03-23 | Magnesium compound, solid catalyst component, catalyst for olefin polymerization and method of producing polyolefin |
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US12/408,926 Continuation US7871951B2 (en) | 2004-08-24 | 2009-03-23 | Magnesium compound, solid catalyst component, catalyst for olefin polymerization and method of producing polyolefin |
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EP (1) | EP1783109A4 (ja) |
JP (1) | JPWO2006022244A1 (ja) |
KR (1) | KR20070045280A (ja) |
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JP2014181182A (ja) * | 2013-03-18 | 2014-09-29 | Japan Advanced Institute Of Science & Technology Hokuriku | マグネシウムエトキシド結晶を含有する粒子とその製造方法 |
JP2021504346A (ja) * | 2017-11-28 | 2021-02-15 | エスシージー ケミカルズ カンパニー,リミテッド | マグネシウム化合物、マグネシウム化合物を製造するための方法、およびその使用 |
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JP2021504346A (ja) * | 2017-11-28 | 2021-02-15 | エスシージー ケミカルズ カンパニー,リミテッド | マグネシウム化合物、マグネシウム化合物を製造するための方法、およびその使用 |
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US7871951B2 (en) | 2011-01-18 |
KR20070045280A (ko) | 2007-05-02 |
EP1783109A1 (en) | 2007-05-09 |
CN101014558A (zh) | 2007-08-08 |
US20070213206A1 (en) | 2007-09-13 |
US20090186755A1 (en) | 2009-07-23 |
JPWO2006022244A1 (ja) | 2008-05-08 |
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