WO2004074329A1 - Support complexe pour catalyseur de polymerisation du propylene, composant de catalyseur et catalyseur contenant ce composant - Google Patents
Support complexe pour catalyseur de polymerisation du propylene, composant de catalyseur et catalyseur contenant ce composant Download PDFInfo
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- WO2004074329A1 WO2004074329A1 PCT/CN2004/000126 CN2004000126W WO2004074329A1 WO 2004074329 A1 WO2004074329 A1 WO 2004074329A1 CN 2004000126 W CN2004000126 W CN 2004000126W WO 2004074329 A1 WO2004074329 A1 WO 2004074329A1
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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
- 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
- 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
- C08F110/04—Monomers containing three or four carbon atoms
- C08F110/06—Propene
Definitions
- the present invention relates to a composite carrier for olefin polymerization, particularly a propylene polymerization catalyst, and a catalyst component and catalyst using the same.
- high-efficiency supported Ziegler-Natta catalysts have been widely used in the polymerization of ethylene and propylene and their copolymerization with other (X-olefins).
- high-efficiency supported catalysts usually use magnesium chloride as a single carrier.
- different physical or chemical methods are used to prepare the magnesium chloride support, and then the transition metal compound and the optional electron donor compound are supported to form a catalyst active center. From the particle morphology, the catalyst can be classified into particles ( U.S. Patent No. 4,478,983 and U.S. Patent No.
- each of each of each of each of each of each of the catalyst exhibits high polymerization activity and stereospecificity when used for olefin polymerization, particularly propylene polymerization.
- the morphology of the catalyst particles it is difficult to obtain high in the copolymerization for propylene.
- High impact copolymer of ethylene content this is also Common characteristics of such particulate catalysts.
- EP0395083 discloses a catalyst for the polymerization of olefins by reacting magnesium chloride with a fatty alcohol to obtain a spherical magnesium chloride alcoholate support, followed by a titanium compound and electron donating The bulk compound is supported on the spherical support to obtain a highly spherical catalyst.
- the spherical fusifier exhibits high activity and stereospecificity when polymerized with propylene, and the polymer particles are in good shape and can be used.
- High-impact ethylene-propylene copolymer with high ethylene content is prepared.
- the catalyst particles have a large diameter and are prone to breakage during polymerization. Especially when the prepolymerization ratio is low, the fracture phenomenon is more obvious, and the resulting polymer fine powder will affect the stable operation of the polymerization device.
- GB2028347 discloses a process for preparing a catalyst component supported on a porous inorganic oxide support by impregnating a silica support with a magnesium chloride solution, and then evaporating the solvent to obtain a solid product which is further mixed with a transition metal compound, particularly titanium. Compound reaction. Further, as disclosed in Chinese Patent No. CN1035186C, a technique for preparing a high-efficiency polypropylene catalyst using a silica carrier is disclosed.
- the catalyst prepared by the support obtained by the method of impregnating silica with the above magnesium chloride solution is not satisfactory in polymerization activity when used for propylene polymerization.
- the method of impregnation basically uses the particle morphology of the silica support itself to control the particle morphology of the final catalyst.
- the particles of porous silica are larger, usually having an average particle size of ⁇ 50 ⁇ m, limiting The amount of active component supported on the silica is such that the activity of the final catalyst is not high.
- 4,376, 062 discloses a composite support type catalyst in which an anhydrous magnesium chloride is contacted with titanium tetrachloride in an electron donor solvent such as tetrahydrofuran to obtain a slurry or solution containing the active component, and then The mixture was mixed with fumed silica having a particle diameter of 0.007 to 0.05 ⁇ m, and then spray-dried to obtain a catalyst product having an average particle diameter of about 25 ⁇ m.
- the catalyst is used in the polymerization of ethylene after being reacted with an activator (alkyl aluminum) to exhibit high polymerization activity.
- An object of the present invention is to provide a composite carrier for a propylene polymerization catalyst comprising magnesium oxide and a silica material having an average particle diameter of less than ⁇ .
- Another object of the present invention is to provide a composite support for a propylene polymerization catalyst which is obtained by contacting magnesium with one or more electron donor compounds to form a solution having a silica having an average particle diameter of less than ⁇ .
- the material is mixed, and the spherical particles obtained by spray drying are obtained.
- Still another object of the present invention is to provide a catalyst component for propylene polymerization comprising a reaction product of a composite support of the present invention and a titanium compound represented by the formula Ti(OR 2 ) 4 - m X m , Wherein R 2 is the same or different ( ⁇ ⁇ ⁇ : 14 aliphatic hydrocarbon group, X is selected from F, Cl, Br or a mixture thereof, and m is an integer of 1-4, wherein the reaction is carried out before the composite carrier reacts with the titanium compound The internal electron donor compound is treated during or after the reaction.
- an internal electron donor compound selected from the group consisting of polybasic aliphatic carboxylic acid esters, aromatic Carboxylic acid esters and 1,3-diether compounds of the following formula (I):
- a halogen atom optionally a halogenated linear or branched ⁇ : ⁇ 20 alkyl group, optionally halogenated C 3 - C 20 cycloalkyl group, optionally 3 ⁇ 4 generation C 6 -C 2 o aryl, optionally 3 ⁇ 4 generation of C 7 -C 2 .
- One of an alkylaryl group and optionally a halogenated C 7 -C 20 aralkyl group, and R VH and R vm may be the same or different from each other, and are selected from the optionally halogenated straight or branched dC ⁇ Alkyl, optionally 3 ⁇ 4 generation of C 3 -C 2 .
- a cycloalkyl group optionally a C 6 -C 2 Q aryl group, optionally a C 7 -C 2 group .
- One of the aralkyl groups; the groups of R 1 - ! ⁇ 1 may be bonded to form a ring.
- a further object of the present invention is to provide a catalyst for the polymerization of propylene comprising the reaction product of the solid catalyst component of the present invention, an alkylaluminum compound, and optionally an external electron donor component.
- the catalyst of the invention is used for the polymerization of olefins, especially when used for the polymerization of propylene It shows higher polymerization activity and stereospecificity, and can be used to prepare high impact ethylene-propylene copolymer with high ethylene content.
- olefins especially when used for the polymerization of propylene It shows higher polymerization activity and stereospecificity, and can be used to prepare high impact ethylene-propylene copolymer with high ethylene content.
- the present invention provides a composite carrier for a propylene polymerization catalyst comprising 3 ⁇ 4 magnesium and a silica material having an average particle diameter of less than ⁇ #K.
- the composite carrier is a spherical particle which can be passed through magnesium
- the solution is contacted with one or more electron donor compounds, and the solution is mixed with silica having an average particle diameter of less than ⁇ , and then spray-dried.
- the magnesium halide used in the present invention is represented by M ⁇ OR ⁇ -mXm, wherein R 1 is the same or different 0 ( ⁇ (: 14 linear, branched or cyclic alkyl group, X is selected from F) , Cl, Br or a mixture thereof, m is 1 or 2.
- Specific compounds include, but are not limited to: magnesium dichloride, magnesium dibromide, magnesium phenoxide chloride, magnesium isopropoxide chloride, butoxychloride Magnesium and the like, among which magnesium dichloride is preferred.
- the magnesium compound may be used singly or in combination.
- Suitable electron donor compounds for dissolving the magnesium include the halogenated aliphatic or aromatic alcohols, fatty acyl groups, cyclic ethers, fatty ketones, alkyl esters of aliphatic or aromatic carboxylic acids. Particularly suitable are optionally halogenated saturated fatty alcohols having from 1 to 8 carbon atoms; lower alkyl esters of saturated aliphatic carboxylic acids having from 1 to 4 carbon atoms; aromatic ones having from 7 to 8 carbon atoms Or a lower alkyl ester of a polycarboxylic acid; an aliphatic ether having 2 to 8 carbon atoms, preferably 4 to 5 carbon atoms; a cycloaliphatic ether having 4 to 5 carbon atoms, preferably containing a monoether or diether of 4 carbon atoms; and an aliphatic ketone having 3 to 6 carbon atoms, preferably 4 to 5 carbon atoms.
- “Crystal alkyl” as used herein refers to an alky
- the electron donor compound is a system comprising at least one optional aliphatic alcohol or C 7 _ 1 () aromatic alcohol. More preferably, the electron donor compound is at least one of an optionally halogenated d- 8 fatty alcohol and a C 7 _ 1 () aromatic alcohol, or the alcohol and d. 6 fatty ether, C 3 _ 5 cyclic ether or A mixture of a fatty acid or a d- 6 alkyl ester of an aromatic carboxylic acid.
- Examples of the electron donor compound include, but are not limited to, methanol, ethanol, isopropanol, n-butanol, isobutanol, isoamyl alcohol, n-octanol, isooctanol, ethylene glycol, propylene glycol, chlorohydrin, Trichloroethanol, diethyl ether, dibutyl ether, methyl formate, ethyl acetate, butyl acetate, hexyl ether, tetrahydrofuran (THF), acetone, methyl isobutyl ketone, ethyl benzoate, diethyl phthalate Further, di-n-butyl phthalate or di-isobutyl phthalate is preferably ethanol, isopropanol, n-butanol, trichloroethanol, tetrahydrofuran, ethyl benzoate or diethyl phthalate.
- Suitable electron donor compounds further include systems containing organic epoxy compounds and/or organophosphorus compounds selected from aliphatic epoxides having 2 to 8 carbon atoms, diepoxides or substituted At least one of an aliphatic epoxide or a diepoxide or a glycidyl ether.
- organophosphorus compound is selected from the group consisting of d-d of orthophosphoric acid or phosphorous acid. Hydrocarbyl ester or halohydrocarbyl ester.
- trimethyl orthophosphate triethyl orthophosphate, tributyl orthoformate, triphenyl orthophosphate, trimethyl phosphite, triethyl phosphite, tributyl phosphite, triphenyl phosphite ester.
- the electron donor compound is required to be 3 to 50 moles, preferably 6 to 30 moles per mole of the magnesium halide.
- the preparation of such a solution can be carried out in the presence of an inert organic solvent which does not form an adduct with magnesium oxide.
- the situation solvent preferably C s _ 12 hydrocarbons, halogenated hydrocarbons and C 6 - 12 aromatic hydrocarbons, such as hexane, heptane, dichloroethane, toluene, xylene, ethylbenzene and the like.
- the silica material In order to facilitate spray forming to obtain a composite carrier of smaller particles, the silica material generally has a silica having an average particle diameter of less than ⁇ , preferably less than 5 ⁇ m, more preferably a fumed silica having a particle diameter smaller than ⁇ . , also known as fumed silica.
- the specific surface area of such silica is generally 200 ⁇ 50 m 2 /g.
- the solution is mixed with silica to obtain a slurry suitable for spraying. Generally, the amount of silica added per liter of the solution is from 10 to 200 g.
- Spray drying can be carried out as follows: The slurry obtained by mixing the solution with a silica material is spray-dried together with an inert dry gas by a spray dryer to obtain spherical solid particles.
- the composite support of the present invention In order to make the composite support of the present invention more suitable for the preparation of a catalyst for propylene polymerization, it is generally required that the composite support be spherical particles having an average diameter of 5 - 60 ⁇ m, preferably 10 to 40 ⁇ m, more preferably 12 to 30 ⁇ m.
- the present invention provides a catalyst component for propylene polymerization comprising the reaction product of the above composite support with a titanium compound as shown by the general formula Ti(OR 2 ) 4 - m X m , Wherein R 2 is the same or different aliphatic hydrocarbon group of d Cw, X is selected from F, Cl, Br or a mixture thereof, and m is an integer of 14 wherein the reaction is carried out before or after the reaction of the composite carrier with the titanium compound, Treatment with an internal electron donor compound.
- the titanium compound may specifically be selected from titanium tetrachloride, titanium tetrabromide, titanium tetraiodide, titanium tetrabutoxide, titanium tetraethoxide, titanium monochlorotriethoxy, titanium dichlorodiethoxytitanium, trichlorochloride.
- titanium tetrachloride titanium tetrabromide, titanium tetraiodide, titanium tetrabutoxide, titanium tetraethoxide, titanium monochlorotriethoxy, titanium dichlorodiethoxytitanium, trichlorochloride.
- ethoxytitanium or titanium trichloride or a mixture thereof is preferably titanium tetrachloride.
- the titanium compound should be a compound that is completely soluble in a non-polar solvent at the application temperature.
- the composite support can be treated with various internal electron donor compounds that have been disclosed in the art.
- Suitable internal electron donor compounds include polybasic aliphatic carboxylic acid esters or aromatic carboxylic acid esters such as: phthalates, malonic esters, succinates, glutarate, pivalic acid Esters or carbonates, etc.
- At least one 1,3-diether compound of the formula (I) is treated as an internal electron donor before, during or after the reaction of the composite support with the titanium compound.
- One of aralkyl groups, and R VH and R vm may be the same or different from each other, and are selected from optionally halogenated straight or branched CirC 2 () alkyl groups, optionally halogenated C 3 -C 20 cycloalkyl, optionally C 6 -C 20 aryl, optionally C 7 -C 20 alkaryl and optionally halogenated C 7 -C 2 .
- One of the aralkyl groups; the groups of R 1 - ! ⁇ 1 may be bonded to form a ring.
- the polymerization activity is high, the hydrogen modulation sensitivity is good, the stereospecificity is strong, and the obtained polymer is obtained.
- the powder has a high bulk density, and even if an external electron donor (for example, a silane) is used in the polymerization, the obtained polypropylene has an isotacticity of up to 98%, and the obtained polymer has a broad molecular weight distribution.
- the 1,3-diether compound of the formula (I) used in the catalyst component of the present invention Medium, preferred! ⁇ and R IV are bonded to each other to form an unsaturated fused ring structure, and the hydrogen atom of the fused ring structure is optionally a halogen atom, optionally a halogenated linear or branched d-Czo alkyl group, A halogenated c 3 -c 2() cycloalkyl group, optionally c 6 -c 2 , is selected .
- the 1,3-diether compound is a compound represented by the formula (II):
- the 1,3-diether compound is a compound represented by the formula (III):
- R is the same or different and is selected from hydrogen, a halogen atom, an optionally halogenated straight or branched ⁇ 20 alkyl group, and optionally a halogenated C 3 - C 2 () cycloalkyl, optionally C 6 -C 20 aryl, optionally 3 ⁇ 4 C 7 -C 2 () alkylaryl and optionally halogenated C 7 -C 2 .
- One of aralkyl groups The same or different, selected from hydrogen, an atom, an optionally substituted linear or branched d-o alkyl group, an optionally halogenated C 3 -C 2 () cycloalkyl group, optionally a halogenated C 6 -C 2 .
- R 2 is the same or different and is selected from optionally halogenated straight or branched Cr o alkyl, optionally 3 ⁇ 4 C 3 -C 20 cycloalkyl, optionally C 6 -C 2 .
- 1,3-diether compound of the formula (I) are as follows:
- the solid catalyst component of the present invention can be prepared as follows:
- the magnesium chloride solution can be prepared in accordance with some of the disclosed methods, such as the magnesium chloride dissolution system disclosed in U.S. Patent 4,478,983 and U.S. Patent 4,861,847.
- the ruthenium chloride solution is prepared as follows:
- an alcohol or a mixture of two or more alcohols may be added, and an ether or an ester may be further added, followed by adding anhydrous cesium chloride and heating.
- Dissolve magnesium chloride wherein the molar ratio of alcohol to magnesium chloride is from 3 to 50:1, and the molar ratio of ether or ester to magnesium chloride is from 0 to 20:1.
- the dissolution of the above magnesium chloride can also be carried out in the presence of an inert organic solvent in an amount of from 0 to 20 ml/g MgCl 2 .
- silica preferably fumed silica
- the silica used has an average particle diameter of less than 10 ⁇ m.
- the mixture was stirred at 10 to 100 ° C for 0.5 to 3 hours to obtain a slurry.
- the slurry was spray-dried together with the inert dry gas by a spray dryer to obtain a spherical MgCl 2 /SiO 2 composite carrier having an average particle diameter of 5 to 60 ⁇ m.
- the inlet air temperature during spray drying is controlled at 80 ⁇ 300 °C, and the outlet temperature is controlled at 50 ⁇ 200.
- the composition of the composite carrier is:
- the spherical carrier is suspended in cold TiCl 4 (the amount of TiCl 4 is 12 ⁇ 16 mITiCl 4 /g carrier), and the temperature is slowly raised to 100 to 120 C in 1 to 3 hours, and the internal electron donor compound is added during the heating process.
- the internal electron donor compound is added in an amount of 0.05 to 0.25 mol/mol MgCl 2 ; the reaction is filtered after 1 to 2 hours; optionally, a certain amount of TiCl 4 is further added, maintained at 120 ° C for 1 to 2 hours, and then the liquid is
- the solid matter is washed with an inert solvent such as hexane, and then the solid is vacuum-dried at 30 X to 50 to obtain a solid catalyst component of the present invention.
- the invention relates to a catalyst for the polymerization of propylene comprising the reaction product of the following components:
- Preferred is triethyl aluminum, triisobutyl aluminum, tri-n-butyl aluminum, tri-n-hexyl aluminum, Al(nC 8 H 17 ) 3 , alkyl aluminum chloride such as AlEt 2 Cl, etc.
- AlEt 2 Cl alkyl aluminum chloride
- an external electron donor compound such as a mono- or polyfunctional carboxylic acid, a carboxylic anhydride and a carboxylic acid ester, a ketone, an ether, an alcohol, a lactone, and an organophosphorus and organosilicon compound.
- an organosilicon compound such as an organosilicon compound of the formula R 4 n Si(OR 5 ) 4 _ n wherein 0 ⁇ n ⁇ 3, and R 4 and R 5 are the same or different alkyl groups, cycloalkyl groups, Aryl, haloalkyl, R 4 may also be a halogen or a hydrogen atom.
- the ratio between the solid catalyst component (1), the alkyl aluminum compound component (2) and the external electron donor component (3) is determined by titanium: Aluminum: The molar ratio between silicon is 1: 5 ⁇ 1000: 0 ⁇ 500.
- component (2) and optional component (3) may be contacted with the active component either singly or as a mixture of the two components.
- polymerization includes homopolymerization and copolymerization.
- polymer includes homopolymers, copolymers and terpolymers.
- the catalyst of the present invention can be used for homopolymerization of propylene or an ⁇ -olefin such as ethylene, 1-butene, 4-methyl-1-pentene, 1-hexene and 1-octene, and optionally two Copolymerization of olefins.
- the above catalysts can be used to prepare, for example, the following products: an elastomeric copolymer of ethylene and propylene and an elastomeric terpolymer of ethylene and propylene with a smaller proportion of diolefins, wherein the unit content of ethylene is about 30% by weight.
- the catalyst of the present invention can be used in known polymerization processes, including continuous polymerization and batch polymerization processes.
- the polymerization can be carried out by using an inert hydrocarbon solvent as a diluent in a slurry or a liquid monomer (e.g., propylene) as a reaction medium in the bulk.
- the polymerization process may also be carried out in the gas phase, operating in one or more fluidized bed or mechanically agitated bed reactors.
- the polymerization is usually carried out at 0 ° C to 150 ° C, typically at 20 to 120 ° C, more typically at 40 ° C.
- the operating pressure is usually between 0.5 and 10 MPa (absolute pressure, the same applies hereinafter), preferably between 1 and 5 MPa.
- the operating pressure in the bulk polymerization is usually between 1 and 6 MPa, preferably between 1.5 and 4 MPa. Hydrogen or other compounds capable of functioning as a chain transfer agent can be used to control the molecular weight of the polymer.
- the invention can better control the composition of the solid catalyst product compared with the process technology of spray drying directly obtaining the solid catalyst component disclosed in US Pat. No. 4,376,062, in particular, the content of the internal electron donor in the solid catalyst component can be conveniently adjusted. kind, this is very important to ensure high stereospecificity of the catalyst of the present invention.
- the primary particle diameter of the silica present in the catalyst of the present invention is small, and the catalyst of the present invention has a high polymerization activity, it can be used for the production of a film-like product.
- the catalyst prepared by the method is more effective in avoiding the occurrence of excessive fisheye.
- the solid catalyst particles of the present invention have a rich microporous structure and a catalytically active component distribution, so that the catalyst has good copolymerization properties, can be used for preparing a high ethylene content high impact propylene copolymer, and is suitable for propylene.
- the catalyst of the present invention is particularly suitable for use in a gas phase polymerization process for propylene.
- Example 2 310 g of polypropylene powder was obtained, and the isotacticity (I.I.) of the polypropylene was determined to be 96.0%, and the melt index (M.I.) was 5.1 g/10 min.
- the activity of the catalyst was 36.5 Kg of polypropylene per gram of solid catalyst component, and the polymer bulk density was 0.42 g/ml.
- a solid catalyst component was prepared as described in Example 1. Propylene polymerization:
- the polymerization method was the same as in Example 1.
- II isotacticity
- MI melt index
- polymer bulk density 0.43 g/ml.
- Example 2 Spray drying was carried out under the conditions of Example 1 to obtain a spherical composite carrier having an average particle diameter of about 17 ⁇ m.
- the composition of the obtained carrier was analyzed (parts by weight):
- a solid catalyst component was prepared by the method described in Example 1.
- the polymerization method was the same as in Example 1.
- Example 4
- Example 2 Spray drying was carried out under the conditions of Example 1 to obtain a spherical composite carrier having an average particle diameter of about 18 ⁇ m.
- the composition of the obtained carrier was analyzed (parts by weight): MgCl 2 : 48.6%; S0 2 : 25.2%; ethanol: 16.8%; epichlorohydrin: 3.6%; tetrahydrofuran: 5.9%.
- a solid catalyst component was prepared by the method described in Example 1.
- the polymerization method was the same as in Example 1.
- Example 5
- Example 2 Spray drying was carried out under the conditions of Example 2 to obtain an average particle diameter of 18 ⁇ m.
- Right spherical composite carrier The composition of the obtained carrier was analyzed (parts by weight):
- a solid catalyst component was prepared by the method described in Example 1.
- the polymerization method was the same as in Example 1.
- a solid catalyst component was prepared by the method described in Example 1.
- the polymerization method was the same as in Example 1.
- Example 7
- a solid catalyst component was prepared by the method described in Example 1.
- the polymerization method was the same as in Example 1.
- the solid was washed 5 times with hexane at 60 ° C, and the amount of hexane was 60 ml each time. Finally, the solid matter was dried to obtain a solid catalyst component having a magnesium content of 13.2% by weight, a titanium content of 3.3% by weight, and 2-isopentyl-2-isopropyl-1,3. The dimethoxypropane content was 8.8% by weight.
- a 5-liter autoclave was purged with propylene gas for 1 hour, and 5 ml of a triethylaluminum hexane solution (concentration of triethylaluminum of 0.5 mmol/ml) and 1 ml of cyclohexylmethyl group were introduced into a nitrogen gas stream at room temperature.
- a hexane solution of dimethoxysilane (CHMMS) concentration of CHMMS: 0.1 mmol/ml
- Example 10 The preparation of the magnesium chloride solution, the composite support and the catalyst component was the same as in Example 8. Propylene polymerization was carried out in the same manner as in Example 8 except that no external electron donor was added. The activity of the catalyst was 51.5 Kg of polypropylene per g of solid catalyst component and the polymer bulk density was 0.42 g/ml. The isotacticity (II ) of the obtained polypropylene was 94.3%, the melt index (MI ) was 6.2 g/10 min, and the molecular weight distribution Mw/Mn was 7.0.
- II isotacticity
- MI melt index
- Mw/Mn molecular weight distribution
- Propylene polymerization The polymerization method was the same as in Example 8.
- II isotacticity
- MI melt index
- Mw/Mn 7.3.
- the bulk density was 0.43 g/ml.
- Example 12 was repeated except that no external electron donor was added during the polymerization of propylene.
- the polymer bulk density was 0.40 g/ml.
- the activity of the catalyst was 58.6 K g of polypropylene/g solid catalyst component, and the obtained isotacticity (II) of the polypropylene was 97.8%, the melt index (MI) was 4.0 g/10 min, and the molecular weight distribution Mw/Mn was 7.4.
- the polymer bulk density was 0.43 g/ml.
- Example 14 was repeated except that no external electron donor was added during the polymerization of propylene.
- the activity of the catalyst was 64.3 Kg of polypropylene per gram of the solid catalyst component, and the isotacticity (II) of the obtained polypropylene was 93.0%, the melt index (MI) was 5.8 g/10 min, and the molecular weight distribution Mw/Mn was 7.3.
- the bulk density was 0.40 g/ml.
- the solid catalyst component was prepared in accordance with the procedure described in Example 12.
- the polymerization method was the same as in Example 8.
- the bulk density was 0.42 g/ml. Comparative Example 1
- anhydrous MgCl 2 is sequentially added. 0.05 mol, 95 ml of toluene, 0.05 mol of epichlorohydrin (ECP) and 0.046 mol of tributyl typhate (TBP), and the temperature was raised to 50 ° C with stirring, and maintained for 2.5 hours. The solid was completely dissolved, and then phthalic acid was added. 0.0095 mol of formic anhydride was maintained for 1 hour, the solution was cooled to -25 ° C, and 56 ml of TiCl 4 was added dropwise over one hour, and the temperature was slowly raised to 80 ° C. During the heating, the solid matter was gradually precipitated.
- the polymerization method was the same as in Example 9, except that the polymerization time was 1 hour.
- the bulk density was 0.44 g/ml.
- the catalyst prepared by using the composite carrier, the 1, 3-diether compound and the titanium compound of the present invention as essential components has high polymerization activity and bulk density when used for propylene polymerization.
- a catalyst is prepared by using a 1,3 diether compound as an internal electron donor instead of the composite carrier of the present invention, the molecular weight distribution of the obtained polymer is narrow, which can be clearly seen from the comparative examples.
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Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
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CA002516693A CA2516693A1 (en) | 2003-02-24 | 2004-02-17 | Complex support suitable for propylene polymerization catalyst, a catalyst component and catalyst containing the same |
EP04711555A EP1609805B1 (en) | 2003-02-24 | 2004-02-17 | Complex support suitable for propylene polymerization catalyst, a catalyst component and catalyst containing the same |
JP2006501450A JP2006523730A (ja) | 2003-02-24 | 2004-02-17 | プロピレン重合用触媒の複合担体、これを含む触媒成分及び触媒 |
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CN 03105214 CN1218971C (zh) | 2003-02-24 | 2003-02-24 | 用于烯烃聚合催化剂的复合载体及其催化剂组分和催化剂 |
CN03105214.2 | 2003-02-24 | ||
CNB03153662XA CN1297574C (zh) | 2003-08-20 | 2003-08-20 | 用于烯烃聚合的催化剂组分及其催化剂 |
CN03153662.X | 2003-08-20 |
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WO2004074329A1 true WO2004074329A1 (fr) | 2004-09-02 |
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PCT/CN2004/000126 WO2004074329A1 (fr) | 2003-02-24 | 2004-02-17 | Support complexe pour catalyseur de polymerisation du propylene, composant de catalyseur et catalyseur contenant ce composant |
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US (2) | US20040229748A1 (zh) |
EP (1) | EP1609805B1 (zh) |
JP (1) | JP2006523730A (zh) |
KR (1) | KR20060013486A (zh) |
CA (1) | CA2516693A1 (zh) |
RU (1) | RU2005128272A (zh) |
WO (1) | WO2004074329A1 (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006026158A1 (en) * | 2004-08-25 | 2006-03-09 | Novolen Technology Holdings, C.V. | Ziegler-natta catalyst and method for making and using same |
WO2006036359A2 (en) * | 2004-09-23 | 2006-04-06 | Equistar Chemicals, Lp | Magnesium chloride support |
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CN104558282B (zh) | 2013-10-18 | 2017-02-15 | 中国石油化工股份有限公司 | 用于烯烃聚合的催化剂组分及其制备方法和用于烯烃聚合的催化剂与应用 |
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WO2006026158A1 (en) * | 2004-08-25 | 2006-03-09 | Novolen Technology Holdings, C.V. | Ziegler-natta catalyst and method for making and using same |
WO2006036359A2 (en) * | 2004-09-23 | 2006-04-06 | Equistar Chemicals, Lp | Magnesium chloride support |
WO2006036359A3 (en) * | 2004-09-23 | 2006-05-26 | Equistar Chem Lp | Magnesium chloride support |
CN104918971A (zh) * | 2012-11-26 | 2015-09-16 | 鲁姆斯诺沃伦技术公司 | 高性能齐格勒-纳塔催化剂体系,这种负载型催化剂的生产方法及其用途 |
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Also Published As
Publication number | Publication date |
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CA2516693A1 (en) | 2004-09-02 |
RU2005128272A (ru) | 2006-08-10 |
KR20060013486A (ko) | 2006-02-10 |
US20060154806A1 (en) | 2006-07-13 |
EP1609805A1 (en) | 2005-12-28 |
EP1609805B1 (en) | 2012-10-17 |
EP1609805A4 (en) | 2008-05-21 |
JP2006523730A (ja) | 2006-10-19 |
US20040229748A1 (en) | 2004-11-18 |
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