WO2013027560A1 - オレフィン類重合用固体触媒成分の製造方法、オレフィン類重合用触媒およびオレフィン類重合体の製造方法 - Google Patents
オレフィン類重合用固体触媒成分の製造方法、オレフィン類重合用触媒およびオレフィン類重合体の製造方法 Download PDFInfo
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
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- C08F110/06—Propene
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- the present invention relates to a method for producing a solid catalyst component for olefin polymerization, a catalyst for olefin polymerization, and production of an olefin polymer, which have a good anti-hydrogen activity and can obtain a polymer with high stereoregularity and high bulk density. Regarding the method.
- olefins such as propylene
- a solid catalyst component containing magnesium, titanium, an electron donating compound and a halogen atom as essential components is known, and the above solid catalyst component, organoaluminum compound and organosilicon compound are known.
- Many methods for polymerizing or copolymerizing olefins in the presence of an olefin polymerization catalyst comprising:
- Patent Document 1 Japanese Patent Laid-Open No. 57-63310
- Patent Document 2 Japanese Patent Laid-Open No. 57-63311
- a method of polymerizing olefins having 3 or more carbon atoms in particular using a catalyst comprising a combination of an aluminum compound and an organosilicon compound having a Si—O—C bond.
- these methods are not always satisfactory for obtaining a high stereoregularity polymer in a high yield, and further improvement is desired.
- Patent Document 3 Japanese Patent Application Laid-Open No. 63-3010
- the product obtained by contacting dialkoxymagnesium, aromatic dicarboxylic acid diester, aromatic hydrocarbon compound and titanium halogen compound is in a powder state.
- a propylene polymerization catalyst formed from a solid catalyst component prepared by heat treatment with an organic aluminum compound and an organosilicon compound and a method for polymerizing propylene have been proposed.
- Patent Document 4 Japanese Patent Laid-Open No. 1-315406
- titanium tetrachloride is brought into contact with a suspension formed of diethoxymagnesium and alkylbenzene, and then phthalic acid dichloride is added and reacted.
- Propylene polymerization catalyst comprising a solid catalyst component prepared by obtaining a solid product and further catalytically reacting the solid product with titanium tetrachloride in the presence of an alkylbenzene, and an organoaluminum compound and an organosilicon compound, and the catalyst Propylene polymerization methods in the presence of are proposed.
- a solid catalyst component prepared by obtaining a solid product and further catalytically reacting the solid product with titanium tetrachloride in the presence of an alkylbenzene, and an organoaluminum compound and an organosilicon compound, and the catalyst Propylene polymerization methods in the presence of are proposed.
- Each of the above prior arts has such a high activity that the purpose of removing a catalyst residue such as chlorine and titanium remaining in the produced polymer can be omitted, and at the same time, a stereoregular polymer.
- the focus is on improving yield and sustaining the catalytic activity during polymerization, each with excellent results.
- the olefin polymers obtained by using the above catalyst are used for various applications such as containers and films in addition to molded products such as automobiles and home appliances by various molding machines and stretching machines after melting. Yes. However, they are not sufficiently fluid when melted (melt flow rate) for use in high-speed stretching or high-speed injection molding, and many studies have been made to cope with them.
- Melt flow rate is highly dependent on the molecular weight of the olefin polymer.
- low molecular weight olefin polymers are high melt flow rates.
- hydrogen is generally added during polymerization to lower the molecular weight of the olefin polymer, and usually a large amount of hydrogen is added. Yes.
- the upper limit of the amount of hydrogen that can be added is limited by the pressure resistance of the polymerization reactor. For this reason, in order to add more hydrogen, the partial pressure of the olefin gas to be polymerized must be lowered, and in this case, productivity is lowered.
- Patent Document 5 Japanese Patent Application Laid-Open No. 2004-107462
- a solid catalyst component obtained by contacting dialkoxymagnesium, a titanium halogen compound, a phthalic acid diester, and a malonic acid diester, and an organic Propylene polymerization catalysts comprising an aluminum compound and an organosilicon compound and a propylene polymerization method have been proposed.
- this method exhibits good anti-hydrogen activity compared to the catalyst using the conventional phthalic acid diester, but has a high stereoregularity and a high melt flow rate polymer.
- the catalyst performance that satisfies the hydrogen response at the same time is not always satisfactory, and further improvement has been desired.
- the bulk density of the olefin polymer development of a catalyst capable of obtaining polymer particles having a higher bulk density is desired.
- an object of the present invention is to provide a method for producing a solid catalyst component for olefin polymerization, which can obtain an olefin polymer having higher stereoregularity and high stereoregularity and high bulk density, and a catalyst for olefin polymerization. And providing a method for producing an olefin polymer.
- the present inventors have conducted intensive studies, and as a result, prepared and washed using a phthalic acid diester or a substituted phthalic acid diester as a magnesium compound and an electron donating compound, The present inventors have found that a solid catalyst component obtained by bringing a compound into contact with malonic acid diester or substituted malonic acid diester can solve the above problems, and has completed the present invention.
- the present invention relates to a magnesium compound, a tetravalent titanium halogen compound and the following general formula (1);
- R 1 represents an alkyl group having 1 to 8 carbon atoms or a halogen atom
- R 2 and R 3 are alkyl groups having 1 to 12 carbon atoms, which may be the same or different, The number k of the substituent R 1 is 0, 1 or 2, and when k is 2, the R 1 may be the same or different.
- the solid component obtained by washing is converted into a tetravalent titanium halogen compound and the following general formula (2);
- R 4 R 5 C (COOR 6 ) 2 (2) wherein R 4 and R 5 are a hydrogen atom, a halogen atom, a straight chain having 1 to 20 carbon atoms or a branched alkyl group having 3 to 20 carbon atoms, a straight chain having 1 to 20 carbon atom
- the present invention provides a solid catalyst component for olefin polymerization obtained by the method described in the production method, (II) General formula (3); R 7 p AlQ 3-p (3) (Wherein R 7 is an alkyl group having 1 to 6 carbon atoms, Q is a hydrogen atom or a halogen atom, and p is a real number of 0 ⁇ p ⁇ 3), and (III) An olefin polymerization catalyst characterized by being formed from an external electron donating compound.
- the present invention also provides a method for producing an olefin polymer, characterized by polymerizing olefins in the presence of the olefin polymerization catalyst.
- an olefin polymer having a high stereoregularity with a small amount of hydrogen, a high melt flow rate, and a high bulk density. can be obtained.
- solid catalyst component (A) The method for producing a solid catalyst component for olefin polymerization of the present invention (hereinafter sometimes referred to as “solid catalyst component (A)”) is represented by a magnesium compound, a tetravalent titanium halogen compound and the general formula (1).
- the step II After contacting and reacting with the electron-donating compound represented by 2), the step II is performed to wash the reaction product to obtain a solid catalyst component.
- the cleaning in step I is also referred to as “intermediate cleaning”
- the cleaning in step II is also referred to as “final cleaning”.
- magnesium compound (a) examples include magnesium dihalide, dialkylmagnesium, alkylmagnesium halide, dialkoxymagnesium, diaryloxymagnesium, alkoxymagnesium halides, Fatty acid magnesium etc. are mentioned.
- dialkoxymagnesium is preferable, and specific examples include dimethoxymagnesium, diethoxymagnesium, dipropoxymagnesium, dibutoxymagnesium, ethoxymethoxymagnesium, ethoxypropoxymagnesium, butoxyethoxymagnesium, and the like.
- Magnesium is particularly preferred.
- These dialkoxymagnesium may be obtained by reacting metal magnesium with alcohol in the presence of halogen or a halogen-containing metal compound.
- said dialkoxy magnesium can also be used individually or in combination of 2 or more types.
- dialkoxymagnesium suitable for the method for producing the solid catalyst component (A) of the present invention is in the form of granules or powder, and the shape thereof may be indefinite or spherical.
- spherical dialkoxymagnesium when spherical dialkoxymagnesium is used, a polymer powder having a better particle shape and a narrow particle size distribution can be obtained, and the handling operability of the produced polymer powder during the polymerization operation is improved. Problems such as blockage caused by the contained fine powder are solved.
- the above spherical dialkoxymagnesium does not necessarily have a true spherical shape, and an elliptical shape or a potato shape can also be used.
- the particle shape is such that the ratio (l / w) of the major axis diameter l to the minor axis diameter w is 3 or less, preferably 1 to 2, more preferably 1 to 1.5. .
- the dialkoxymagnesium having an average particle diameter of 1 to 200 ⁇ m can be used.
- the thickness is preferably 5 to 150 ⁇ m.
- the average particle size is 1 to 100 ⁇ m, preferably 5 to 50 ⁇ m, and more preferably 10 to 40 ⁇ m.
- the particle size it is desirable to use one having a small particle size distribution and a small amount of fine powder and coarse powder.
- the particle size of 5 ⁇ m or less is 20% or less, preferably 10% or less.
- the particle size of 100 ⁇ m or more is 10% or less, preferably 5% or less.
- the particle size distribution is expressed by ln (D90 / D10) (where D90 is the cumulative particle size and the particle size at 90%, D10 is the cumulative particle size and the particle size at 10%), it is preferably 3 or less, preferably 2 or less.
- JP-A-58-41832, JP-A-62-51633, JP-A-3-74341, JP-A-4-368391, JP-A-4-36891 can be used for producing spherical dialkoxymagnesium as described above. It is exemplified in Japanese Patent Laid-Open No. 8-73388.
- titanium halogen compound (b) has the general formula; Ti (OR 13 ) n X 4-n (wherein R 13 represents An alkyl group having 1 to 4 carbon atoms, X represents a halogen atom such as chlorine, bromine or iodine, and n is 0 or an integer of 1 to 3).
- Ti (OR 13 ) n X 4-n wherein R 13 represents An alkyl group having 1 to 4 carbon atoms, X represents a halogen atom such as chlorine, bromine or iodine, and n is 0 or an integer of 1 to 3).
- R 13 represents An alkyl group having 1 to 4 carbon atoms
- X represents a halogen atom such as chlorine, bromine or iodine
- n is 0 or an integer of 1 to 3
- titanium halide examples include titanium tetrahalides such as titanium tetrachloride, titanium tetrabromide, and titanium tetraiodide.
- alkoxytitanium halide examples include methoxytitanium trichloride, ethoxytitanium trichloride, propoxytitanium trichloride, and n-butoxy. Titanium trichloride, dimethoxy titanium dichloride, diethoxy titanium dichloride, dipropoxy titanium dichloride, di-n-butoxy titanium dichloride, trimethoxy titanium chloride, triethoxy titanium chloride, tripropoxy titanium chloride, tri-n-butoxy titanium chloride, etc. Can be mentioned. Of these, titanium tetrahalide is preferable, and titanium tetrachloride is particularly preferable. These titanium compounds can be used alone or in combination of two or more.
- the electron donating compound represented by the general formula (1) used in step I is a phthalic acid diester or a substituted phthalic acid diester.
- substituted phthalic acid diesters include halogen-substituted phthalic acid diesters, alkyl-substituted phthalic acid diesters, and halogenated alkyl-substituted phthalic acid diesters.
- the alkyl group having 1 to 8 carbon atoms of R 1 is methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, t-butyl group, n- Examples include pentyl group, isopentyl group, neopentyl group, n-hexyl group, isohexyl group, 2,2-dimethylbutyl group, 2,2-dimethylpentyl group, isooctyl group, and 2,2-dimethylhexyl group.
- the halogen atom for R 1 include fluorine, chlorine, bromine and iodine atoms.
- R 1 is preferably a methyl group, a bromine atom or a fluorine atom, more preferably a methyl group or a bromine atom.
- examples of the alkyl group having 1 to 12 carbon atoms of R 2 and R 3 include, for example, methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, t- Butyl group, n-pentyl group, isopentyl group, neopentyl group, n-hexyl group, isohexyl group, 2,2-dimethylbutyl group, 2,2-dimethylpentyl group, isooctyl group, 2,2-dimethylhexyl group, n -Nonyl group, isononyl group, n-decyl group, isodecyl group, n-dodecyl group.
- an ethyl group, n-butyl group, isobutyl group, t-butyl group, neopentyl group, isohexyl group, and isooctyl group are preferable, and an ethyl group, n-butyl group, and neopentyl group are particularly preferable.
- the number k of the substituent R 1 is 0, 1 or 2, and when k is 2, R 1 may be the same or different, and the 4-position and 5 of the benzene ring of the general formula (1) Substitution with a hydrogen atom at the position is preferred.
- R 1 is preferably substituted with a hydrogen atom at the 3-position, 4-position or 5-position of the benzene ring of the general formula (1).
- phthalic acid diesters include dimethyl phthalate, diethyl phthalate, di-n-propyl phthalate, diisopropyl phthalate, di-n-butyl phthalate, diisobutyl phthalate, ethyl methyl phthalate, methyl phthalate ( Isopropyl), ethyl phthalate (n-propyl), ethyl phthalate (n-butyl), ethyl phthalate (isobutyl), di-n-pentyl phthalate, diisopentyl phthalate, dineopentyl phthalate, dihexyl phthalate, phthalic acid Di-n-heptyl, di-n-octyl phthalate, bis (2,2-dimethylhexyl) phthalate, bis (2-ethylhexyl) phthalate, di-n-nonyl phthalate, diisodecyl
- substituted phthalic acid diesters include diethyl 4-methylphthalate, di-n-butyl 4-methylphthalate, diisobutyl 4-methylphthalate, dineopentyl 4-bromophthalate, diethyl 4-bromophthalate, and 4-bromophthalic acid.
- esters are preferably used in combination of two or more, and the esters are used so that the total carbon number of the alkyl group of the ester used is 4 or more compared to that of other esters. It is desirable to combine.
- polysiloxane can be used in the contact of the magnesium compound (a), the titanium halogen compound (b), and the electron donating compound (c).
- Polysiloxane is a polymer having a siloxane bond (—Si—O— bond) in the main chain, but is also collectively referred to as silicone oil, and has a viscosity at 25 ° C. of 0.02 to 100 cm 2 / s (2 to 10,000 centistokes). ), More preferably 0.03 to 5 cm 2 / s (3 to 500 centistokes), a liquid or viscous chain, partially hydrogenated, cyclic or modified polysiloxane at room temperature.
- the disiloxanes are hexamethyldisiloxane, hexaethyldisiloxane, hexapropyldisiloxane, hexaphenyldisiloxane 1,3-divinyltetramethyldisiloxane, 1,3-dichlorotetramethyldisiloxane, 3-dibromotetramethyldisiloxane, chloromethylpentamethyldisiloxane, 1,3-bis (chloromethyl) tetramethyldisiloxane, and dimethylpolysiloxane and methylphenylpolysiloxane as polysiloxanes other than disiloxane are partially hydrogenated As hydrogenated polysiloxane, methylhydrogen polysiloxane having a hydrogenation rate of 10 to 80% is used.
- cyclic polysiloxane hexamethylcyclotrisiloxane, octamethylcyclotetrasiloxane, Tylcyclopentasiloxane, 2,4,6-trimethylcyclotrisiloxane, 2,4,6,8-tetramethylcyclotetrasiloxane, and modified polysiloxanes include higher fatty acid group-substituted dimethylsiloxane and epoxy group-substituted dimethylsiloxane. And polyoxyalkylene group-substituted dimethylsiloxane.
- decamethylcyclopentasiloxane and dimethylpolysiloxane are preferable, and decamethylcyclopentasiloxane is particularly preferable.
- step I the contact of each component is performed with stirring in a container equipped with a stirrer in an inert gas atmosphere and in a state where moisture and the like are removed.
- the contact temperature is a temperature at the time of contact of each component, and may be the same temperature as the reaction temperature or a different temperature.
- the contact temperature may be a relatively low temperature range around room temperature when the mixture is simply brought into contact with stirring and mixed, or dispersed or suspended for modification, but the product is allowed to react after contact. When obtained, a temperature range of 40 to 130 ° C. is preferable from the viewpoint of easy reaction rate and reaction control.
- the reaction time is 1 minute or longer, preferably 10 minutes or longer, more preferably 30 minutes or longer.
- step I the magnesium compound (a), the titanium halogen compound (b), and the electron donating compound (c) are referred to as hydrocarbon compounds having a boiling point of 50 to 150 ° C. (hereinafter simply referred to as “hydrocarbon compound (e)”). It is preferable to make contact in the presence of
- the hydrocarbon compound (e) is preferably an aromatic hydrocarbon compound or a saturated hydrocarbon compound that is liquid at room temperature, and specifically, a straight-chain or boiling point of 50 to 150 ° C. such as hexane, heptane, decane, or methylheptane.
- a straight-chain or boiling point of 50 to 150 ° C. such as hexane, heptane, decane, or methylheptane.
- Examples thereof include branched aliphatic hydrocarbon compounds, alicyclic hydrocarbon compounds having a boiling point of 50 to 150 ° C. such as cyclohexane and ethylcyclohexane, and aromatic hydrocarbon compounds having a boiling point of 50 to 150 ° C. such as toluene, xylene and ethylbenzene.
- an aromatic hydrocarbon compound having a boiling point of 50 to 150 ° C. is preferable in that the activity of the obtained solid catalyst component and the stereoreg
- step I the components (a), (b) and (c) are brought into contact with each other and reacted to produce a reaction product (solid component) produced as a washing liquid (hereinafter simply referred to as “washing liquid (f)”).
- washing liquid (f) is preferably a hydrocarbon compound having a boiling point of 50 to 150 ° C.
- the hydrocarbon compound having a boiling point of 50 to 150 ° C. include the same compounds as the hydrocarbon compound (e). Of these, aromatic hydrocarbon compounds are preferred because they have a high cleaning effect for impurities and the like.
- the intermediate washing temperature is 0 to 110 ° C., preferably 30 to 100 ° C., particularly preferably 30 to 90 ° C., and the number of washings is 1 to 20 times, preferably 1 to 15 times, particularly preferably 1 to 10 times. It is.
- each said contact method when adding (c) and (b) continuously, you may add after mixing beforehand. Moreover, about the process in double parenthesis ( ⁇ ), the activity of the obtained solid catalyst component improves further by performing it several times as needed.
- the product obtained in each contact step can be washed with a hydrocarbon compound that is liquid at room temperature.
- spherical dialkoxymagnesium (a) is suspended in a hydrocarbon compound (e) having a boiling point of 50 to 150 ° C., and then tetravalent titanium is added to the suspension. After contacting the halogen compound (b), a reaction treatment is performed. At this time, before or after the tetravalent titanium halogen compound (b) is brought into contact with the suspension, one or more electron donating compounds (c) are brought into contact at ⁇ 20 to 130 ° C. To obtain a solid reaction product (1). At this time, it is desirable to carry out the aging reaction at a low temperature before or after contacting the electron donating compound (c).
- this solid reaction product (1) After washing this solid reaction product (1) with a washing liquid (f) which is a liquid hydrocarbon compound at room temperature, the tetravalent titanium halogen compound (b) is again added in the presence of the hydrocarbon compound (e). The mixture is contacted at ⁇ 20 to 100 ° C. and subjected to reaction treatment to obtain a solid reaction product (2). And this solid reaction product (2) is wash
- the solid reaction product (2) to be washed is preferably in a wet state from which almost no supernatant liquid has been removed. If necessary, the intermediate cleaning and reaction treatment may be repeated a plurality of times.
- the solid reaction product (2) uses a spherical magnesium compound as the magnesium compound (a), a solid catalyst component having a more spherical shape and a sharp particle size distribution can be obtained.
- a spherical magnesium compound is not used, for example, by spraying and drying a solution or suspension using a spray device, particles are formed by the so-called spray-drying method, so that the solid is also spherical and has a sharp particle size distribution.
- a catalyst component can be obtained.
- Preferred conditions for the above treatment or washing are as follows.
- Low temperature aging reaction ⁇ 20 to 70 ° C., preferably ⁇ 10 to 60 ° C., more preferably 0 to 30 ° C., 1 minute to 6 hours, preferably 5 minutes to 4 hours, particularly preferably 10 minutes to 3 hours .
- Reaction treatment 0 to 130 ° C., preferably 40 to 120 ° C., particularly preferably 50 to 115 ° C., for 0.5 to 6 hours, preferably 0.5 to 5 hours, particularly preferably 1 to 4 hours.
- Washing 0 to 110 ° C., preferably 30 to 100 ° C., particularly preferably 30 to 90 ° C., 1 to 20 times, preferably 1 to 15 times, particularly preferably 1 to 10 times.
- Step II includes a solid component obtained in Step I, a tetravalent titanium halogen compound (g), and an electron donating compound represented by the general formula (2) (hereinafter referred to as “electron donating compound (d)”). And a reaction, and then washed to obtain a solid catalyst component.
- the solid component obtained in step I may be either an undried solid component after intermediate washing or a solid component dried by a hot air drier after intermediate washing.
- An undried solid component contains a cleaning liquid and is in a wet state.
- a solid component containing a large amount of the washing liquid and being in a suspended state is preferable in that the drying step can be omitted and the washing liquid can be used as a reaction solvent in the II step.
- tetravalent titanium halogen compound (g) used in Step II is the same as the tetravalent titanium halogen compound (b) used in Step I, the description thereof is omitted.
- the electron donating compound represented by the general formula (2) used in Step II is a malonic acid diester and a substituted malonic acid diester.
- substituted malonic acid diesters include halogen-substituted malonic acid diesters, alkyl-substituted malonic acid diesters, and halogenated alkyl-substituted malonic acid diesters.
- the halogen atoms of R 4 and R 5 are each atom of chlorine, bromine, iodine and fluorine, preferably chlorine atom and bromine atom.
- Examples of the linear alkyl group having 1 to 20 carbon atoms or the branched alkyl group having 3 to 20 carbon atoms represented by R 4 and R 5 include a methyl group, an ethyl group, an n-propyl group, an isopropyl group, and n-butyl.
- Examples of the straight-chain or branched halogen-substituted alkyl group having 1 to 20 carbon atoms of R 4 and R 5 include a halogenated methyl group, a halogenated ethyl group, and a halogenated n-propyl group.
- examples of halogen include fluorine, chlorine, bromine, and iodine.
- Examples of the cycloalkyl group represented by R 4 and R 5 include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, a cyclononyl group, and a cyclodecyl group.
- Examples of the aromatic hydrocarbon group for R 4 and R 5 include a phenyl group, a methylphenyl group, a dimethylphenyl group, an ethylphenyl group, a benzyl group, a 1-phenylethyl group, a 2-phenylethyl group, and a 2-phenylpropoxy group.
- a phenyl group a methylphenyl group, a dimethylphenyl group, an ethylphenyl group, a benzyl group, a 1-phenylethyl group, a 2-phenylethyl group, and a 2-phenylpropoxy group.
- a branched alkyl group having 3 to 10 carbon atoms is preferable, and an isobutyl group, a t-butyl group, an isopentyl group, and a neopentyl group are particularly preferable.
- the linear alkyl group having 1 to 20 carbon atoms or the branched alkyl group having 3 to 20 carbon atoms of R 6 which is an ester residue of carbonyl includes a methyl group, an ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, t-butyl group, n-pentyl group, isopentyl group, neopentyl group, n-hexyl group, isohexyl group, 2,2-dimethylbutyl group, 2, Examples include 2-dimethylpentyl group, isooctyl group, 2,2-dimethylhexyl group, n-nonyl group, isononyl group, n-decyl group, isodecyl group and n-dodecyl group.
- Examples of the cycloalkyl group having 3 to 20 carbon atoms of R 6 include a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, a cyclononyl group, and a cyclodecyl group.
- Examples of the aromatic hydrocarbon group represented by R 6 include phenyl group, methylphenyl group, dimethylphenyl group, ethylphenyl group, benzyl group, 1-phenylethyl group, 2-phenylethyl group, 2-phenylpropyl group, 1- Examples include phenylbutyl group, 4-phenylbutyl group, 2-phenylheptyl group, tolyl group, xylyl group, naphthyl group and the like.
- R 6 in the general formula (2) is particularly preferably a linear alkyl group having 1 to 8 carbon atoms or a branched alkyl group having 3 to 8 carbon atoms, specifically, a methyl group, an ethyl group, or an n-propyl group. Isopropyl group, n-butyl group, isobutyl group, t-butyl group, pentyl group, isopentyl group, and neopentyl group.
- malonic acid diesters include dimethyl malonate, diethyl malonate, di-n-propyl malonate, di-n-butyl malonate, diisobutyl malonate, di-n-pentyl malonate, and dineopentyl malonate. Can be mentioned.
- halogen-substituted malonic acid diesters include dimethyl chloromalonate, diethyl chloromalonate, dimethyl dichloromalonate, diethyl dichloromalonate, dimethyl bromomalonate, diethyl bromomalonate, dimethyl dibromomalonate, diethyl dibromomalonate, chloro Di-n-propyl malonate, di-n-propyl dichloromalonate, di-n-propyl bromomalonate, di-n-propyl dibromomalonate, di-n-butyl chloromalonate, di-n-dichloromalonate Butyl, di-n-butyl bromomalonate, di-n-butyl dibromomalonate, diisobutyl chloromalonate, diisobutyl dichloromalonate, isodibutyl bromomalonate, diisobutyl
- alkyl and halogen-substituted malonic acid diesters include dimethyl ethyl chloromalonate, dimethyl ethyl bromomalonate, dimethyl isopropyl chloromalonate, dimethyl isopropyl bromomalonate, dimethyl n-butyl chloromalonate, n-butyl bromomalon.
- alkyl-substituted malonic acid diesters include dimethyl isopropylmalonate, diethyl isopropylmalonate, di-n-propyl isopropylmalonate, diisopropyl isopropylmalonate, di-n-butyl isopropylmalonate, diisobutyl isopropylmalonate, isopropyl Dineopentyl malonate, dimethyl isobutylmalonate, diethyl isobutylmalonate, di-n-propyl isobutylmalonate, diisopropyl isobutylmalonate, di-n-butyl isobutylmalonate, diisobutylisobutylmalonate, dineopentylisobutylmalonate, isopentylmalon Dimethyl acid, diethyl isopentylmalonate, di-n-propyl isopentyl
- halogenated alkyl-substituted malonic diester examples include dimethyl bis (chloromethyl) malonate, dimethyl bis (bromomethyl) malonate, dimethyl bis (chloroethyl) malonate, dimethyl bis (bromoethyl) malonate, bis (3- Dimethyl chloro-n-propyl) dimethyl malonate, dimethyl bis (3-bromo-n-propyl) malonate, diethyl bis (chloromethyl) malonate, diethyl bis (bromomethyl) malonate, diethyl bis (chloroethyl) malonate, bis Examples thereof include diethyl (bromoethyl) malonate, diethyl bis (3-chloro-n-propyl) malonate, diethyl bis (3-bromo-n-propyl) malonate, and the like.
- Step II the solid component, the tetravalent titanium halogen compound (g) and the component (d) are contacted with each other in a container equipped with a stirrer in an inert gas atmosphere in a state where moisture is removed. While done.
- the contact temperature, reaction temperature, reaction time, and the like are the same as the contact temperature, reaction temperature, and reaction time in Step I.
- the solid component, tetravalent titanium halogen compound (g) and component (d) obtained in Step I are a hydrocarbon compound having a boiling point of 50 to 150 ° C. (hereinafter simply referred to as “hydrocarbon compound (h)”). It is preferable to contact in the presence of The hydrocarbon compound (h) is the same as the hydrocarbon compound (e) in the step I, and the description thereof is omitted.
- step II the tetravalent titanium halogen compound (g) and the electron donating compound (d) in the presence of the hydrocarbon compound (h) are added to the solid component containing the electron donating compound (c) obtained in step I. ) Is contacted at ⁇ 20 to 100 ° C. to carry out the reaction treatment, and then the reaction product is washed with a washing liquid (i) which is a hydrocarbon compound which is liquid at room temperature (final washing). The reaction product in step II is washed to remove reaction by-products or unreacted components (g) and excess component (d), which are impurities generated in the reaction in step II.
- the cleaning liquid (i) is the same as the cleaning liquid (f) used in step I, and the description thereof is omitted.
- the washing liquid (i) used in the step II may be a saturated hydrocarbon compound so that a side reaction product after the reaction in the step II or an unreacted tetravalent titanium halogen compound (g) and an excess component (d ) Is highly soluble and easy to handle.
- the titanium halogen compound (g) and the electron donating compound (d) may be added individually or after mixing in advance.
- the washing (final washing) temperature is 0 to 110 ° C., preferably 30 to 100 ° C., particularly preferably 30 to 90 ° C., and the number of washing (final washing) is 1 to 20 times, preferably 1 to 15 times. Particularly preferred is 1 to 10 times.
- the solid catalyst component (A) obtained in step II can contact the solid catalyst component that can be contacted with only one of the electron donating compounds or the electron donating compound mixture without undergoing an intermediate washing step. As compared with the obtained solid catalyst component, it is possible to obtain a polymer having better hydrogen activity and higher stereoregularity.
- the amount of each component used in preparing the solid catalyst component (A) varies depending on the preparation method and cannot be specified unconditionally.
- a tetravalent titanium halogen compound (b) per mole of dialkoxymagnesium (a) ) Is 0.5 to 100 mol, preferably 0.5 to 50 mol, more preferably 1 to 10 mol
- the electron donating compound (c) is 0.01 to 10 mol, preferably 0.01 to 1 mol.
- Mol more preferably 0.02 to 0.6 mol
- the electron donating compound (d) is 0.01 to 10 mol, preferably 0.01 to 1 mol, more preferably 0.02 to 0.6 mol.
- the aromatic hydrocarbon compound (e) is 0.001 to 500 mol, preferably 0.001 to 100 mol, more preferably 0.005 to 10 mol.
- the content of titanium, magnesium, halogen atom and electron donating compound in the solid catalyst component (A) in the present invention is not particularly defined, but preferably 0.5 to 8.0% by weight, preferably 0% of titanium.
- halogen atom is 20 to 88% by weight, more preferably 30 to 85% by weight, particularly preferably 40 to 80% by weight, still more preferably 45 to 75% by weight
- the electron donating compound (c ) Is preferably 0.5 to 30% by weight, more preferably 1 to 25% by weight, particularly preferably 2 to 20% by weight
- the electron donating compound (d) is more preferably 0.5 to 30% by weight.
- Ku is a total of 1 to 25% by weight, particularly preferably a total of 2 to 20 wt%.
- the titanium content is 0.5 to 2.0% by weight and the magnesium content is 15 to 25 wt%, halogen atom content 45 to 75 wt%, electron donating compound (c) content 2 to 20 wt%, electron donating compound (d) content 2 to 20% by weight is desirable.
- the catalyst for olefin polymerization of the present invention may be referred to as (I) a solid catalyst component (A), (II) an organoaluminum compound represented by the general formula (3) (hereinafter simply referred to as “organoaluminum compound (B)”). .) And (III) an external electron donating compound (hereinafter sometimes referred to simply as “external electron donating compound (C)”) is contacted to form an olefin polymerization catalyst, and in the presence of the catalyst. Polymerization or copolymerization of olefins can be performed.
- organoaluminum compound (B) examples include triethylaluminum, diethylaluminum chloride, tri-isobutylaluminum, diethylaluminum bromide, tri-n-hexylaluminum, and one or more of these can be used. . Triethylaluminum and tri-isobutylaluminum are preferable.
- Examples of the external electron donating compound (C) include organic compounds containing oxygen atoms or nitrogen atoms.
- organic compounds containing oxygen atoms or nitrogen atoms For example, alcohols, phenols, ethers, esters, ketones, acid halides, aldehydes, amines Amides, nitriles, isocyanates, organosilicon compounds, among others, organosilicon compounds having Si—O—C bonds or aminosilane compounds having Si—N—C bonds.
- esters such as ethyl benzoate, ethyl p-methoxybenzoate, ethyl p-ethoxybenzoate, methyl p-toluate, ethyl p-toluate, methyl anisate, ethyl anisate, 1,3 Diethers, organosilicon compounds containing Si—O—C bonds, aminosilane compounds containing Si—N—C bonds are preferred, organosilicon compounds having Si—O—C bonds, aminosilanes having Si—N—C bonds Compounds are particularly preferred.
- the organosilicon compound having a Si—O—C bond is represented by the general formula (4); R 8 q Si (OR 9 ) 4-q (4) (Wherein R 8 is an alkyl group having 1 to 12 carbon atoms, a cycloalkyl group having 3 to 12 carbon atoms, a phenyl group, a vinyl group, an allyl group, or an aralkyl group, and may be the same or different.
- R 9 Are an alkyl group having 1 to 4 carbon atoms, a cycloalkyl group having 3 to 6 carbon atoms, a phenyl group, a vinyl group, an allyl group or an aralkyl group, and may be the same or different, and q is 0 ⁇ q ⁇ 3.
- the aminosilane compound having a Si—N—C bond includes the following general formula (5): (R 10 R 11 N) s SiR 12 4-s (5) (Wherein R 10 and R 11 are a hydrogen atom, a linear alkyl group having 1 to 20 carbon atoms or a branched alkyl group having 3 to 20 carbon atoms, a vinyl group, an allyl group, an aralkyl group, and a cycloalkyl group having 3 to 20 carbon atoms. R 10 and R 11 may be the same or different, and R 10 and R 11 may be bonded to each other to form a ring, and R 12 is a straight chain having 1 to 20 carbon atoms.
- an aryl group or an aryloxy group, if R 12 there are a plurality, are a plurality of R 12 include aminosilane compounds represented by may be the same or different .s is an integer from 1 to 3.
- organosilicon compounds include phenylalkoxysilane, alkylalkoxysilane, phenylalkylalkoxysilane, cycloalkylalkoxysilane, alkyl (cycloalkyl) alkoxysilane, (alkylamino) alkoxysilane, alkyl (alkylamino) alkoxysilane, Examples thereof include cycloalkyl (alkylamino) alkoxysilane, tetraalkoxysilane, tetrakis (alkylamino) silane, alkyltris (alkylamino) silane, dialkylbis (alkylamino) silane, and trialkyl (alkylamino) silane.
- the external electron donating compound (III) one or two selected from the organosilicon compound represented by the general formula (4) and the organosilicon compound represented by the general formula (5) A combination of the above can also be used.
- olefins are polymerized or copolymerized in the presence of the solid catalyst for olefin polymerization.
- olefins include ethylene, propylene, 1-butene, 1-pentene, 4-methyl-1-pentene, vinylcyclohexane, and the like, and these olefins can be used alone or in combination of two or more.
- ethylene, propylene and 1-butene are preferably used.
- Particularly preferred is propylene.
- copolymerization with other olefins can also be performed.
- olefins to be copolymerized examples include ethylene, 1-butene, 1-pentene, 4-methyl-1-pentene, vinylcyclohexane, and the like, and these olefins can be used alone or in combination of two or more. In particular, ethylene and 1-butene are preferably used.
- the amount of each component used is arbitrary as long as it does not affect the effect of the present invention, and is not particularly limited.
- the organoaluminum compound (B) is titanium in the solid catalyst component (A). It is used in the range of 1 to 2000 mol, preferably 50 to 1000 mol per mol of atom.
- the external electron donating compound (C) is in the range of 0.002 to 10 mol, preferably 0.01 to 2 mol, particularly preferably 0.01 to 0.5 mol, per mol of the organoaluminum compound (B). Used.
- the order of contacting the components is arbitrary, but the organoaluminum compound (B) is first charged into the polymerization system, then the external electron donating compound (C) is contacted, and the solid catalyst component (A) is further contacted. It is desirable.
- the polymerization method in the present invention can be carried out in the presence or absence of an organic solvent, and the olefin monomer such as propylene can be used in any state of gas and liquid.
- the polymerization temperature is 200 ° C. or lower, preferably 100 ° C. or lower
- the polymerization pressure is 10 MPa or lower, preferably 5 MPa or lower.
- any of a continuous polymerization method and a batch type polymerization method is possible.
- the polymerization reaction may be performed in one stage or in two or more stages.
- the olefin when the olefin is polymerized using a catalyst containing the solid catalyst component (A), the organoaluminum compound (B), and the external electron donating compound (C) (also referred to as main polymerization), the catalytic activity.
- a catalyst containing the solid catalyst component (A), the organoaluminum compound (B), and the external electron donating compound (C) also referred to as main polymerization
- the catalytic activity In order to further improve the stereoregularity and the particle properties of the polymer produced, it is desirable to perform prepolymerization prior to the main polymerization.
- the same olefins as in the main polymerization or monomers such as styrene can be used.
- the order of contacting the components and monomers is arbitrary, but preferably, the organoaluminum compound (B) is first charged into the prepolymerization system set to an inert gas atmosphere or an olefin gas atmosphere, Next, after contacting the solid catalyst component (A), an olefin such as propylene and / or one or more other olefins are contacted.
- the organoaluminum compound (B) is first charged in the prepolymerization system set to an inert gas atmosphere or an olefin gas atmosphere, and then external electron donation is performed.
- the method of contacting the olefin compound such as propylene and / or one or other two or more olefins after contacting the active compound (C) and further contacting the solid catalyst component (A) is desirable.
- olefins When olefins are polymerized in the presence of an olefin polymerization catalyst formed according to the present invention, it has higher hydrogen-to-hydrogen activity and higher stereoregularity than when a conventional catalyst is used. A polymer can be obtained.
- Example 1 Synthesis of Solid Catalyst Component (A1)] A 500 ml round bottom flask, which was sufficiently replaced with nitrogen gas and equipped with a stirrer, was charged with 20 ml of titanium tetrachloride and 40 ml of toluene to form a mixed solution. Then, a suspension formed from 10 g of spherical diethoxymagnesium (sphericity 1 / w: 1.10) and 47 ml of toluene was added into the mixed solution. Thereafter, the mixture was stirred at 4 ° C.
- spherical diethoxymagnesium sphericity 1 / w: 1.10
- Solid component X (Step I).
- 20 ml of titanium tetrachloride, 47 ml of toluene and 3.3 ml of dimethyl diisobutylmalonate were newly added to the solid component X, and the temperature was raised to 100 ° C., and the mixture was reacted for 2 hours with stirring.
- the supernatant of toluene was removed, and the wet solid product containing toluene was washed 4 times with 87 ml of toluene at 100 ° C. and 10 times with 67 ml of n-heptane at 40 ° C. to obtain a solid catalyst component ( A1) (Step II) was obtained.
- the titanium content rate in this solid catalyst component was measured, it was 1.5 weight%.
- the bulk specific gravity of the polymer was measured according to JIS K 6721.
- melt flowability (MFR)
- MFR melt flow rate
- Example 2 [Synthesis of Solid Catalyst Component (A2)] A solid catalyst component (A2) was prepared in the same manner as in Example 1 except that the same molar amount of dimethyl isobutylmalonate was used instead of dimethyldiisobutylmalonate. [Formation and polymerization of polymerization catalyst] A polymerization catalyst was formed and polymerized in the same manner as in Example 1 except that the solid catalyst component (A2) was used instead of the solid catalyst component (A1). In addition, it was 1.6 weight% when the titanium content rate in this solid catalyst component was measured. The polymerization results are shown in Table 1.
- Example 3 [Synthesis of Solid Catalyst Component (A3)] A solid catalyst component (A3) was prepared in the same manner as in Example 1, except that the same mole of diethyl diisobutylmalonate was used instead of dimethyldiisobutylmalonate. [Formation and polymerization of polymerization catalyst] A polymerization catalyst was formed and polymerized in the same manner as in Example 1 except that the solid catalyst component (A3) was used instead of the solid catalyst component (A1). In addition, it was 1.6 weight% when the titanium content rate in this solid catalyst component was measured. The polymerization results are shown in Table 1.
- a polymerization catalyst was formed and polymerized in the same manner as in Example 1 except that the solid catalyst component (A4) was used instead of the solid catalyst component (A1).
- the polymerization results are shown in Table 1.
- Example 4 [Synthesis of Solid Catalyst Component (A5)] 10 g of the powdered solid catalyst component (A4) obtained in Comparative Example 1, 80 ml of toluene, 20 ml of titanium tetrachloride and dimethyl diisobutylmalonate 3 in a 500 ml round bottom flask fully substituted with nitrogen gas and equipped with a stirrer .3 ml was added, the temperature was raised to 100 ° C., and the reaction was allowed to stir for 2 hours. After completion of the reaction, the obtained solid product was washed 4 times with 100 ml of toluene at 100 ° C. and 10 times with 100 ml of n-heptane at 40 ° C. to obtain a solid catalyst component (A5). In addition, it was 1.4 weight% when the titanium content rate in this solid catalyst component was measured.
- a polymerization catalyst was formed and polymerized in the same manner as in Example 1 except that the solid catalyst component (A5) was used instead of the solid catalyst component (A1).
- the polymerization results are shown in Table 1.
- the temperature of the mixed solution was raised, and when the temperature reached 60 ° C., 4.0 ml of diethyl diisobutylmalonate was added. The temperature was further raised to 90 ° C., and the reaction was carried out with stirring for 2 hours. After completion of the reaction, the obtained solid product was washed four times with 100 ml of toluene at 90 ° C., 30 ml of titanium tetrachloride and 70 ml of toluene were newly added, the temperature was raised to 112 ° C., and the mixture was reacted for 2 hours with stirring. After completion of the reaction, the solid catalyst component (A6) was obtained by washing 10 times with 100 ml of n-heptane at 40 ° C. The titanium content in the solid catalyst component was measured and found to be 2.6% by weight.
- a polymerization catalyst was formed and polymerized in the same manner as in Example 1 except that the solid catalyst component (A6) was used instead of the solid catalyst component (A1).
- the polymerization results are shown in Table 1.
- a polymerization catalyst was formed and polymerized in the same manner as in Example 1 except that the solid catalyst component (A7) was used instead of the solid catalyst component (A1).
- the polymerization results are shown in Table 1.
- Comparative Example 4 Synthesis of Solid Catalyst Component (A8)
- the solid catalyst component ( A8) was prepared. In addition, it was 3.1 weight% when the titanium content rate in this solid catalyst component was measured.
- a polymerization catalyst was formed and polymerized in the same manner as in Example 1 except that the solid catalyst component (A8) was used instead of the solid catalyst component (A1).
- the polymerization results are shown in Table 1.
- Example 5 [Synthesis of Solid Catalyst Component (A9)] A solid catalyst component (A9) was prepared in the same manner as in Example 1 except that the same mole of di-n-propyl phthalate was used instead of di-n-butyl phthalate. [Formation and polymerization of polymerization catalyst] A polymerization catalyst was formed and polymerized in the same manner as in Example 1 except that the solid catalyst component (A9) was used instead of the solid catalyst component (A1). The titanium content in the solid catalyst component was measured and found to be 2.3% by weight. The polymerization results are shown in Table 1.
- Example 6 [Synthesis of Solid Catalyst Component (A10)] A solid catalyst component (A10) was prepared in the same manner as in Example 1 except that the same mole of diethyl phthalate was used instead of di-n-butyl phthalate. [Formation and polymerization of polymerization catalyst] A polymerization catalyst was formed and polymerized in the same manner as in Example 1 except that the solid catalyst component (A10) was used instead of the solid catalyst component (A1). The titanium content in the solid catalyst component was measured and found to be 2.9% by weight. The polymerization results are shown in Table 1.
- the catalyst for olefin polymerization of the present invention exhibits a higher activity against hydrogen and can obtain a high bulk density olefin polymer while maintaining high stereoregularity.
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Abstract
Description
しかしながら、添加し得る水素量の上限は、重合リアクターの耐圧から制限される。このため、より多くの水素を添加するためには重合するオレフィンガスの分圧を下げざるを得ず、この場合、生産性が低下することになる。また、水素を多量に用いると、得られるオレフィン重合体の立体規則性が低下する問題もある。更には、コストの面の不利となる。従って、より少ない水素量で高メルトフローレイトのオレフィン重合体が製造できるようないわゆる対水素活性が高く、かつ高立体規則性のオレフィン重合体を高収率で得られる触媒の開発が望まれている。
(R1)kC6H4-k(COOR2)(COOR3) (1)
(式中、R1は炭素数1~8のアルキル基又はハロゲン原子を示し、R2およびR3は炭素数1~12のアルキル基であり、同一であっても異なってもよく、また、置換基R1の数kは0、1又は2であり、kが2のとき、R1は同一であっても異なってもよい。)で表される電子供与性化合物を接触、反応させた後、洗浄して得られる固体成分を、4価のチタンハロゲン化合物および下記一般式(2);
R4R5C(COOR6)2 (2)
(式中、R4およびR5は水素原子、ハロゲン原子、炭素数1~20の直鎖状または炭素数3~20の分岐状アルキル基、炭素数1~20の直鎖状または炭素数3~20の分岐状ハロゲン置換アルキル基、炭素数3~20のシクロアルキル基、芳香族炭化水素基、ビニル基、アリル基またはアラルキル基であり、同一または異なっていてもよい。R6は炭素数1~20の直鎖状アルキル基または炭素数3~20の分岐状アルキル基、炭素数3~20のシクロアルキル基、芳香族炭化水素基、ビニル基、アリル基またはアラルキル基であり、同一または異なっていてもよい。)で表される電子供与性化合物と接触、反応させた後、洗浄することを特徴とするオレフィン類重合用固体触媒成分の製造方法を提供するものである。
(II)一般式(3);R7 pAlQ3-p (3)
(式中、R7は炭素数1~6のアルキル基であり、Qは水素原子またはハロゲン原子であり、pは0<p≦3の実数である。)で表される有機アルミニウム化合物、および(III)外部電子供与性化合物から形成されることを特徴とするオレフィン類重合用触媒を提供するものである。
(1)(a)→(e)→(b)→(c)→《洗浄→(e)→(b)》→中間洗浄→固体成分
(2)(a)→(e)→(c)→(b)→《洗浄→(e)→(b)》→中間洗浄→固体成分
(3)(a)→(e)→(b)→(c)→《洗浄→(e)→(b)→(c)》→中間洗浄→固体成分
(4)(a)→(e)→(b)→(c)→《洗浄→(e)→(c)→(b)》→中間洗浄→固体成分
(5)(a)→(e)→(c)→(b)→《洗浄→(e)→(b)→(c)》→中間洗浄→固体成分
(6)(a)→(e)→(c)→(b)→《洗浄→(e)→(c)→(b)》→中間洗浄→固体成分
・低温熟成反応:-20~70℃、好ましくは-10~60℃、より好ましくは0~30℃で、1分~6時間、好ましくは5分~4時間、特に好ましくは10分~3時間。
・反応処理:0~130℃、好ましくは40~120℃、特に好ましくは50~115℃で、0.5~6時間、好ましくは0.5~5時間、特に好ましくは1~4時間。
・洗浄:0~110℃、好ましくは30~100℃、特に好ましくは30~90℃で、1~20回、好ましくは1~15回、特に好ましくは1~10回。
R8 qSi(OR9)4-q (4)
(式中、R8は炭素数1~12のアルキル基、炭素数3~12のシクロアルキル基、フェニル基、ビニル基、アリル基またはアラルキル基であり、同一または異なっていてもよい。R9は炭素数1~4のアルキル基、炭素数3~6のシクロアルキル基、フェニル基、ビニル基、アリル基またはアラルキル基であり、同一または異なっていてもよい。qは0≦q≦3の整数である。)で表される化合物有機ケイ素化合物が挙げられる。
(R10R11N)sSiR12 4-s (5)
(式中、R10とR11は水素原子、炭素数1~20の直鎖または炭素数3~20の分岐状アルキル基、ビニル基、アリル基、アラルキル基、炭素数3~20のシクロアルキル基またはアリール基であり、R10とR11は同一でも異なってもよく、またR10とR11が互いに結合して環を形成してもよい。R12は炭素数1~20の直鎖または炭素数3~20の分岐状アルキル基、ビニル基、アリル基、アラルキル基、炭素数1~20の直鎖または分岐状アルコキシ基、ビニルオキシ基、アリロキシ基、炭素数3~20のシクロアルキル基、アリール基またはアリールオキシ基であり、R12が複数ある場合、複数のR12は同一でも異なってもよい。sは1から3の整数である。)で表わされるアミノシラン化合物が挙げられる。
各成分の使用量比は、本発明の効果に影響を及ぼすことのない限り任意であり、特に限定されるものではないが、通常有機アルミニウム化合物(B)は固体触媒成分(A)中のチタン原子1モル当たり、1~2000モル、好ましくは50~1000モルの範囲で用いられる。外部電子供与性化合物(C)は、有機アルミニウム化合物(B)1モル当たり、0.002~10モル、好ましくは0.01~2モル、特に好ましくは0.01~0.5モルの範囲で用いられる。
次に、実施例を挙げて本発明をさらに具体的に説明するが、これは単に例示であって、本発明を制限するものではない。
〔固体触媒成分(A1)の合成〕
窒素ガスで十分に置換され、攪拌機を具備した容量500mlの丸底フラスコに四塩化チタン20mlおよびトルエン40mlを装入して、混合溶液を形成した。次いで、球状ジエトキシマグネシウム(球形度l/w:1.10)10gとトルエン47mlから形成された懸濁液を、前記混合溶液中に添加した。その後、4℃で1時間攪拌し、フタル酸ジ-n-ブチル2.7mlを加え、105℃に昇温し、2時間攪拌しながら反応させた。反応終了後、得られた固体生成物を100℃のトルエン87mlで4回洗浄し、新たに四塩化チタン20mlおよびトルエン80mlを加え、100℃に昇温し、2時間攪拌しながら反応させた。反応終了後、トルエンの上澄みを除去し、トルエンを含んだウエットな固体生成物を100℃のトルエン87mlで4回洗浄し、固体成分Xを得た(I工程)。次いで、固体成分Xに対し、新たに四塩化チタン20ml、トルエン47mlおよびジイソブチルマロン酸ジメチル3.3mlを加え、100℃に昇温し、2時間攪拌しながら反応させた。反応終了後、トルエンの上澄みを除去し、トルエンを含んだウエットな固体生成物を100℃のトルエン87mlで4回洗浄し、40℃のn-ヘプタン67mlで10回洗浄して、固体触媒成分(A1)(II工程)を得た。なお、この固体触媒成分中のチタン含有率を測定したところ、1.5重量%であった。
窒素ガスで完全に置換された内容積2.0リットルの攪拌機付オートクレーブに、トリエチルアルミニウム1.32ミリモル、ジシクロペンチルジメトキシシラン(DCPDMS)0.13ミリモルおよび前記固体触媒成分(A1)をチタン原子として0.0013ミリモル装入し、重合用触媒を形成した。その後、水素ガス9.0リットル、液化プロピレン1.4リットルを装入し、20℃で5分間予備重合を行なった後に昇温し、70℃で1時間重合反応を行なった。この時の固体触媒成分1g当たりの重合活性、生成重合体中のかさ比重(BD)、生成重合体中のp-キシレン可溶分の割合(XS)、生成重合体中のメルトフローレイトの値(MFR)を表1に示した。
固体触媒成分1g当たりの重合活性は、下記式により求めた。
重合活性(g-pp/g-触媒)=重合体の質量(g)/固体触媒成分の質量(g)
重合体のかさ比重は、JIS K 6721に準じて測定した。
攪拌装置を具備したフラスコ内に、4.0gの重合体(ポリプロピレン)と、200mlのp-キシレンを装入し、外部温度をキシレンの沸点以上(約150℃)とすることにより、フラスコ内部のp-キシレンの温度を沸点下(137~138℃)に維持しつつ、2時間かけて重合体を溶解した。その後1時間かけて液温を23℃まで冷却し、不溶解成分と溶解成分とを濾過分別した。上記溶解成分の溶液を採取し、加熱減圧乾燥によりp-キシレンを留去し、得られた残留物をキシレン可溶分(XS)とし、その重量を重合体(ポリプロピレン)に対する相対値(重量%)で求めた。
重合体の溶融流れ性を示すメルトフローレート(MFR)は、ASTM D 1238、JIS K 7210に準じて測定した。
〔固体触媒成分(A2)の合成〕
ジイソブチルマロン酸ジメチルに代えて、イソブチルマロン酸ジメチルを同モル使用した以外は、実施例1と同様にして固体触媒成分(A2)を調製した。
〔重合触媒の形成および重合〕
固体触媒成分(A1)に代えて、固体触媒成分(A2)を使用した以外は、実施例1と同様にして、重合触媒を形成し重合を行った。なお、この固体触媒成分中のチタン含有率を測定したところ、1.6重量%であった。重合結果を表1に示した。
〔固体触媒成分(A3)の合成〕
ジイソブチルマロン酸ジメチルに代えて、ジイソブチルマロン酸ジエチルを同モル使用した以外は、実施例1と同様にして固体触媒成分(A3)を調製した。
〔重合触媒の形成および重合〕
固体触媒成分(A1)に代えて、固体触媒成分(A3)を使用した以外は、実施例1と同様にして、重合触媒を形成し重合を行った。なお、この固体触媒成分中のチタン含有率を測定したところ、1.6重量%であった。重合結果を表1に示した。
〔固体触媒成分(A4)の合成〕
窒素ガスで十分に置換され、攪拌機を具備した容量500mlの丸底フラスコに四塩化チタン20mlおよびトルエン40mlを装入して、混合溶液を形成した。次いで、球状ジエトキシマグネシウム(球形度l/w:1.10)10gとトルエン47mlからなる懸濁液を、前記混合溶液中に添加した。その後、4℃で1時間攪拌し、フタル酸ジ-n-ブチル2.7mlを加え、105℃に昇温し、2時間攪拌しながら反応させた。反応終了後、得られた固体生成物を100℃のトルエン87mlで4回洗浄し、新たに四塩化チタン20mlおよびトルエン80mlを加え、100℃に昇温し、2時間攪拌しながら反応させた。反応終了後、40℃のn-ヘプタン67mlで10回洗浄して、固体触媒成分(A4)を得た。なお、この固体触媒成分中のチタン含有率を測定したところ、2.6重量%であった。
固体触媒成分(A1)に代えて、固体触媒成分(A4)を用いた以外は、実施例1と同様に重合用触媒を形成し、重合を行なった。重合結果を表1に示した。
〔固体触媒成分(A5)の合成〕
窒素ガスで十分に置換され、攪拌機を具備した容量500mlの丸底フラスコに比較例1で得られた粉末状の固体触媒成分(A4)10g、トルエン80ml、四塩化チタン20mlおよびジイソブチルマロン酸ジメチル3.3mlを加え、100℃に昇温し、2時間攪拌しながら反応させた。反応終了後、得られた固体生成物を100℃のトルエン100mlで4回洗浄し、40℃のn-ヘプタン100mlで10回洗浄して、固体触媒成分(A5)を得た。なお、この固体触媒成分中のチタン含有率を測定したところ、1.4重量%であった。
固体触媒成分(A1)に代えて、固体触媒成分(A5)を用いた以外は、実施例1と同様に重合用触媒を形成し、重合を行なった。重合結果を表1に示した。
〔固体触媒成分(A6)の合成〕
窒素ガスで十分に置換され、攪拌機を具備した容量500mlの丸底フラスコに四塩化チタン30mlおよびトルエン20 mlを装入して、混合溶液を形成した。次いで、球状ジエトキシマグネシウム(球形度l/w:1.10)10g、トルエン50mlおよびフタル酸ジ-n-ブチル2.0mlからなる懸濁液を、10℃の液温に保持した前記混合溶液中に添加した。その後、混合溶液を昇温し、60℃になったところでジイソブチルマロン酸ジエチル4.0mlを添加した。さらに90℃まで昇温し、2時間攪拌しながら反応させた。反応終了後、得られた固体生成物を90℃のトルエン100mlで4回洗浄し、新たに四塩化チタン30mlおよびトルエン70mlを加え、112℃に昇温し、2時間攪拌しながら反応させた。反応終了後、40℃のn-ヘプタン100mlで10回洗浄して、固体触媒成分(A6)を得た。なお、この固体触媒成分中のチタン含有率を測定したところ、2.6重量%であった。
固体触媒成分(A1)に代えて、固体触媒成分(A6)を用いた以外は、実施例1と同様に重合用触媒を形成し、重合を行なった。重合結果を表1に示した。
〔固体触媒成分(A7)の合成〕
窒素ガスで十分に置換され、攪拌機を具備した容量500mlの丸底フラスコに四塩化チタン20mlおよびトルエン40mlを装入して、混合溶液を形成した。次いで、球状ジエトキシマグネシウム(球形度l/w:1.10)10gとトルエン47mlからなる懸濁液を、前記混合溶液中に添加した。その後、4℃で1時間攪拌し、フタル酸ジ-n-ブチル2.7mlを加え、105℃に昇温し、2時間攪拌しながら反応させた。反応終了後、上澄み液を除去し、洗浄することなく、新たに四塩化チタン20ml、トルエン47mlおよびジイソブチルマロン酸ジメチル3.3mlを加え、100℃に昇温し、2時間攪拌しながら反応させた。反応終了後、得られた固体生成物を100℃のトルエン87mlで4回洗浄し、40℃のn-ヘプタン67mlで10回洗浄して、固体触媒成分(A7)を得た。なお、この固体触媒成分中のチタン含有率を測定したところ、3.1重量%であった。
固体触媒成分(A1)に代えて、固体触媒成分(A7)を用いた以外は、実施例1と同様に重合用触媒を形成し、重合を行なった。重合結果を表1に示した。
〔固体触媒成分(A8)の合成〕
フタル酸ジ-n-ブチルを添加しなかったこと、更にジイソブチルマロン酸ジエチル3.3mlに代えて、ジイソブチルマロン酸ジメチル4.4mlを用いた以外は、比較例2と同様にして固体触媒成分(A8)を調製した。なお、この固体触媒成分中のチタン含有率を測定したところ、3.1重量%であった。
固体触媒成分(A1)に代えて、固体触媒成分(A8)を用いた以外は、実施例1と同様に重合用触媒を形成し、重合を行なった。重合結果を表1に示した。
〔固体触媒成分(A9)の合成〕
フタル酸ジ-n-ブチルに代えて、フタル酸ジ-n-プロピルを同モル使用した以外は、実施例1と同様にして固体触媒成分(A9)を調製した。
〔重合触媒の形成および重合〕
固体触媒成分(A1)に代えて、固体触媒成分(A9)を使用した以外は、実施例1と同様にして、重合触媒を形成し重合を行った。なお、この固体触媒成分中のチタン含有率を測定したところ、2.3重量%であった。重合結果を表1に示した。
〔固体触媒成分(A10)の合成〕
フタル酸ジ-n-ブチルに代えて、フタル酸ジエチルを同モル使用した以外は、実施例1と同様にして固体触媒成分(A10)を調製した。
〔重合触媒の形成および重合〕
固体触媒成分(A1)に代えて、固体触媒成分(A10)を使用した以外は、実施例1と同様にして、重合触媒を形成し重合を行った。なお、この固体触媒成分中のチタン含有率を測定したところ、2.9重量%であった。重合結果を表1に示した。
〔固体触媒成分(A11)の合成〕
フタル酸ジ-n-ブチルに代えて、フタル酸ジ-n-プロピルを同モル使用した以外は、比較例1と同様にして固体触媒成分(A11)を調製した。
〔重合触媒の形成および重合〕
固体触媒成分(A1)に代えて、固体触媒成分(A11)を使用した以外は、実施例1と同様にして、重合触媒を形成し重合を行った。なお、この固体触媒成分中のチタン含有率を測定したところ、2.5重量%であった。重合結果を表1に示した。
〔固体触媒成分(A12)の合成〕
フタル酸ジ-n-ブチルに代えて、フタル酸ジ-n-プロピルを同モル使用した以外は、比較例2と同様にして固体触媒成分(A12)を調製した。
〔重合触媒の形成および重合〕
固体触媒成分(A1)に代えて、固体触媒成分(A12)を使用した以外は、実施例1と同様にして、重合触媒を形成し重合を行った。なお、この固体触媒成分中のチタン含有率を測定したところ、2.4重量%であった。重合結果を表1に示した。
Claims (8)
- マグネシウム化合物、4価のチタンハロゲン化合物および下記一般式(1);
(R1)kC6H4-k(COOR2)(COOR3) (1)
(式中、R1は炭素数1~8のアルキル基又はハロゲン原子を示し、R2およびR3は炭素数1~12のアルキル基であり、同一であっても異なってもよく、また、置換基R1の数kは0、1又は2であり、kが2のとき、R1は同一であっても異なってもよい。)で表される電子供与性化合物を接触、反応させた後、洗浄して得られる固体成分を、4価のチタンハロゲン化合物および下記一般式(2);
R4R5C(COOR6)2 (2)
(式中、R4およびR5は水素原子、ハロゲン原子、炭素数1~20の直鎖状または炭素数3~20の分岐状アルキル基、炭素数1~20の直鎖状または炭素数3~20の分岐状ハロゲン置換アルキル基、炭素数3~20のシクロアルキル基、芳香族炭化水素基、ビニル基、アリル基またはアラルキル基であり、同一または異なっていてもよい。R6は炭素数1~20の直鎖状アルキル基または炭素数3~20の分岐状アルキル基、炭素数3~20のシクロアルキル基、芳香族炭化水素基、ビニル基、アリル基またはアラルキル基であり、同一または異なっていてもよい。)で表される電子供与性化合物と接触、反応させた後、洗浄することを特徴とするオレフィン類重合用固体触媒成分の製造方法。 - 前記マグネシウム化合物が、アルコキシマグネシウムである請求項1に記載のオレフィン類重合用固体触媒成分の製造方法。
- 前記一般式(2)中のR4またはR5が、イソブチル基である請求項1記載のオレフィン類重合用固体触媒成分の製造方法。
- 前記一般式(2)中のR6が、メチル基またはエチル基である請求項1記載のオレフィン類重合用固体触媒成分の製造方法。
- 前記一般式(2)で表される電子供与性化合物が、ジイソブチルマロン酸ジメチル、イソブチルマロン酸ジメチル、ジイソブチルマロン酸ジエチルである請求項1記載のオレフィン類重合用固体触媒成分の製造方法。
- (I)請求項1~5のいずれかの製造方法に記載の方法で得られるオレフィン類重合用固体触媒成分、
(II)一般式(3);R7 pAlQ3-p (3)
(式中、R7は炭素数1~6のアルキル基であり、Qは水素原子またはハロゲン原子であり、pは0<p≦3の実数である。)で表される有機アルミニウム化合物、および(III)外部電子供与性化合物から形成されることを特徴とするオレフィン類重合用触媒。 - (III)外部電子供与性化合物が、下記一般式(4);
R8 qSi(OR9)4-q (4)
(式中、R8は炭素数1~12のアルキル基、炭素数3~12のシクロアルキル基、フェニル基、ビニル基、アリル基またはアラルキル基であり、同一または異なっていてもよい。R9は炭素数1~4のアルキル基、炭素数3~6のシクロアルキル基、フェニル基、ビニル基、アリル基またはアラルキル基であり、同一または異なっていてもよい。qは0≦q≦3の整数である。)および
下記一般式(5);(R10R11N)sSiR12 4-s (5)
(式中、R10とR11は水素原子、炭素数1~20の直鎖または炭素数3~20の分岐状アルキル基、ビニル基、アリル基、アラルキル基、炭素数3~20のシクロアルキル基、アリール基であり、同一でも異なってもよく、またR10とR11が互いに結合して環を形成してもよい。R12は炭素数1~20の直鎖または炭素数3~20の分岐状アルキル基、ビニル基、アリル基、アラルキル基、炭素数1~20の直鎖または分岐状アルコキシ基、ビニルオキシ基、アリロキシ基、炭素数3~20のシクロアルキル基、アリール基またはアリールオキシ基であり、R12が複数ある場合、複数のR12は同一でも異なってもよい。sは1から3の整数である。)から選択される1種または2種以上の有機ケイ素化合物であることを特徴とする請求項6記載のオレフィン類重合用触媒。 - 請求項6または7に記載のオレフィン類重合触媒の存在下に、オレフィン類の重合を行うことを特徴とするオレフィン類重合体の製造方法。
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2012
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- 2012-08-03 CN CN201280039375.8A patent/CN103764690B/zh active Active
- 2012-08-03 WO PCT/JP2012/069854 patent/WO2013027560A1/ja active Application Filing
- 2012-08-03 KR KR1020147006083A patent/KR101898315B1/ko active IP Right Grant
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015043526A1 (zh) * | 2013-09-30 | 2015-04-02 | 中国石油化工股份有限公司 | 一种烯烃聚合用催化剂组合物及其应用 |
US9822196B2 (en) | 2013-09-30 | 2017-11-21 | China Petroleum & Chemical Corporation | Catalyst composition for olefin polymerization and application of same |
CN110770262A (zh) * | 2017-11-17 | 2020-02-07 | 东邦钛株式会社 | 烯烃类聚合用固体催化剂成分、烯烃类聚合用固体催化剂成分的制造方法、烯烃类聚合用催化剂和烯烃类聚合物的制造方法 |
KR20200079221A (ko) | 2017-11-17 | 2020-07-02 | 도호 티타늄 가부시키가이샤 | 올레핀류 중합용 고체 촉매 성분, 올레핀류 중합용 고체 촉매 성분의 제조 방법, 올레핀류 중합용 촉매 및 올레핀류 중합체의 제조 방법 |
CN110770262B (zh) * | 2017-11-17 | 2023-05-23 | 东邦钛株式会社 | 烯烃类聚合用固体催化剂成分及其制造方法、烯烃类聚合用催化剂和烯烃类聚合物制造方法 |
Also Published As
Publication number | Publication date |
---|---|
KR101898315B1 (ko) | 2018-09-12 |
CN103764690B (zh) | 2016-12-14 |
KR20140054202A (ko) | 2014-05-08 |
US10364304B2 (en) | 2019-07-30 |
EP2754677A1 (en) | 2014-07-16 |
US20140206827A1 (en) | 2014-07-24 |
CN103764690A (zh) | 2014-04-30 |
JPWO2013027560A1 (ja) | 2015-03-19 |
EP2754677A4 (en) | 2015-01-07 |
JP5968888B2 (ja) | 2016-08-10 |
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