WO2013008401A1 - オレフィン重合体の製造方法 - Google Patents
オレフィン重合体の製造方法 Download PDFInfo
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- WO2013008401A1 WO2013008401A1 PCT/JP2012/004208 JP2012004208W WO2013008401A1 WO 2013008401 A1 WO2013008401 A1 WO 2013008401A1 JP 2012004208 W JP2012004208 W JP 2012004208W WO 2013008401 A1 WO2013008401 A1 WO 2013008401A1
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- zirconium dichloride
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- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
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- C08F4/00—Polymerisation catalysts
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- 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
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- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/65908—Component covered by group C08F4/64 containing a transition metal-carbon bond in combination with an ionising compound other than alumoxane, e.g. (C6F5)4B-X+
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- C08F4/00—Polymerisation catalysts
- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
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- 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
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- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
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- C08F4/42—Metals; Metal hydrides; Metallo-organic compounds; Use thereof as catalyst precursors
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- 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
- C08F4/659—Component covered by group C08F4/64 containing a transition metal-carbon bond
- C08F4/6592—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring
- C08F4/65922—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not
- C08F4/65927—Component covered by group C08F4/64 containing a transition metal-carbon bond containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring containing at least two cyclopentadienyl rings, fused or not two cyclopentadienyl rings being mutually bridged
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- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
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- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/028—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers containing aliphatic monomers having more than four carbon atoms
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- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
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Definitions
- the present invention relates to a method for producing an olefin polymer and an olefin polymer obtained thereby.
- olefin polymers have been produced using metallocene catalysts and used as wax components and lubricating oil components.
- an alkaline aqueous solution such as sodium hydroxide and the polymerization reaction solution are mixed in a liquid-liquid manner. Extract the metal content into the alkaline aqueous phase.
- a product is produced without treating the metal component in the polymerization reaction solution, usually several tens to several hundreds wtppm of the metal component is contained. These metal components may have an adverse effect when the olefin polymer is used as a lubricating oil component.
- Patent Document 1 an active proton-containing oxygen-containing compound is added after the polymerization is completed in order to prevent an excessive polymerization reaction. Then, since filtration operation is not performed, 1 wtppm or more of aluminum or sodium remains in the examples.
- a method of filtering after absorbing a catalyst residue by bringing a crude product after polymerization into contact with a solid absorbent is generally performed. The removal of was not enough.
- An object of the present invention is to provide a method for producing an olefin polymer that can easily and efficiently reduce the mixing of a catalyst-derived metal component into a polymer.
- the following olefin polymer production methods and the like are provided.
- a metallocene catalyst one or more ⁇ -olefins having 6 to 20 carbon atoms are polymerized to produce an olefin polymer, and the catalyst is deactivated and deashed to obtain a deashing polymerization reaction solution.
- a method for producing an olefin polymer comprising mixing a deashing polymerization reaction solution containing an olefin polymer and water, stirring the mixture for 1 minute or more at a stirring strength of 0.1 kW / m 3 or more, and washing the reaction solution.
- 2. The method for producing an olefin polymer according to 1, wherein a continuous flow stirring tank is used for mixing with the water.
- FIG. 10 is a diagram showing the evaluation results of filter clogging in Comparative Examples 3 to 5. It is a figure which shows the solid fine particle removal rate with respect to stirring time in an Example and a comparative example.
- FIG. 4 is an enlarged view of FIG. 3.
- the method for producing an olefin polymer of the present invention comprises producing an olefin polymer by polymerizing one or more (eg, 1, 2 or 3) ⁇ -olefins having 6 to 20 carbon atoms in the presence of a metallocene catalyst. Thereafter, the catalyst is deactivated, and the deactivated catalyst is removed (decalcified) from the reaction solution containing the olefin polymer. Thereafter, the decalcified polymerization reaction liquid and water are mixed, and the polymerization reaction liquid is washed by stirring for 1 minute or more with a stirring strength of 0.1 kW / m 3 or more.
- the quencher is mixed with the polymerization reaction solution as an aqueous solution.
- the phase (oil phase) consisting mainly of the polymerization reaction solution containing the polymer and the phase containing the deactivator (water phase) are separated, and the catalyst contained in the polymerization reaction solution is transferred to the aqueous phase and deactivated.
- the oil phase is separated from the aqueous phase and collected to obtain an oil phase (deashing polymerization reaction solution) containing a polymer from which a substantial part of the catalyst (metal component) has been removed.
- a solid (starch) derived from a catalyst (metal component) that does not dissolve in either the oil phase or the aqueous phase is generated.
- This solid is mostly mixed with oil and water, becomes a layer heavier than the oil phase and lighter than the water phase, and accumulates at the oil / water interface (intermediate phase).
- Another part of the solid (starch) floats in the oil phase as fine particles having a diameter of about several ⁇ m. If fine particles floating in the oil phase remain in the product, the performance as a lubricating oil may be significantly impaired.
- the demineralized oil phase and water are mixed, stirred for 1 minute or more at a stirring strength of 0.1 kW / m 3 or more, the oil phase is washed, and the fine particles in the oil phase can be reduced. it can. Specifically, it is reduced by transferring the fine particles from the oil phase to the aqueous phase and removing the aqueous phase. Moreover, since the filter load used for removing fine particles in the oil phase is reduced, the filter life can be extended, the cost can be reduced, and a highly productive process can be established.
- the ⁇ -olefin having 6 to 20 carbon atoms used for the polymerization is preferably an ⁇ -olefin having 6 to 14 carbon atoms, more preferably an ⁇ -olefin having 8 to 12 carbon atoms, still more preferably 1-decene, 1-octene and 1-dodecene.
- the olefin polymer of the present invention is usually 2 to 200 mer, and preferably 4 to 200 mer.
- a metallocene compound is used as a polymerization catalyst.
- (B) (b-1) an organoaluminum oxy compound, (b-2) a cation reacting with the metallocene compound.
- An ionic compound that can be converted to (C), an organoaluminum compound, or the like can be used.
- Metallocene compounds and other polymerization catalysts are referred to as “polymerization catalysts”.
- (A) metallocene compound those represented by the following general formulas (I) to (IV) are used.
- C 1 (C 2 ) M 1 X 1 X 2 Y 1 a Y 2 b
- M 1 represents titanium, zirconium or hafnium
- C 1 and C 2 each independently represent a cyclopentadienyl group or an indenyl group or an alkyl substituent thereof, and C 1 and C 2 are the same as each other
- X 1 and X 2 each independently represents a ⁇ -binding ligand or a chelating ligand
- X 1 and X 2 may be the same or different from each other.
- Y 1 and Y 2 each independently represent a Lewis base
- Y 1 and Y 2 may be the same or different from each other
- a and b each independently represent 0 or 1.
- M 2 is titanium, zirconium or hafnium
- C 3 and C 4 each independently represent a cyclopentadienyl group or an indenyl group or an alkyl substituent thereof
- C 3 and C 4 are X 3 and X 4 each independently represents a ⁇ -binding ligand or a chelating ligand
- X 3 and X 4 may be the same or different from each other.
- Y 3 and Y 4 are Lewis bases, c and d each independently represent 0 or 1, Y 3 and Y 4 may be the same or different from each other, A is a bridging group, and —R 2 C— or —R 2 Si— is represented, and each R independently represents a hydrogen atom or a hydrocarbon group.
- R 1 to R 6 are each independently a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 20 carbon atoms, preferably 1 to 10 carbon atoms, more preferably 1 to 4 carbon atoms (for example, an alkyl group) Group), or an organic group having 1 to 20 carbon atoms containing one or more atoms selected from a halogen atom, a silicon atom, an oxygen atom, a sulfur atom, a nitrogen atom and a phosphorus atom, selected from R 1 to R 3
- At least one is a hydrogen atom
- at least one selected from R 4 to R 6 is a hydrogen atom
- R a and R b are each independently a linking group represented by the following general formula (a).
- X 1 and X 2 are each independently a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 20 carbon atoms, or a halogen atom, a silicon atom, an oxygen atom, one or more selected from a sulfur atom, a nitrogen atom and phosphorus atom Of .M showing an organic group having 1 to 20 carbon atoms containing an atom represents a 4-6 transition metal of the periodic table.
- n is an integer of 1 to 3.
- R 7 and R 8 independently contains a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 20 carbon atoms, or a halogen atom having 1 to 20 carbon atoms.
- B represents an atom of Group 14 of the periodic table.
- R a and R b Preferred examples of R a and R b, -CR 7 R 8 -, - SiR 7 R 8 -, - CR 7 R 8 -CR 7 R 8 -, and -SiR 7 R 8 -SiR 7 R 8 - is Can be mentioned.
- R 9 to R 18 and X 1 and X 2 each independently represent a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 20 carbon atoms, preferably 1 to 10 carbon atoms, more preferably a carbon number) 1 to 4 hydrocarbon group (eg alkyl group), halogen-containing hydrocarbon group having 1 to 20 carbon atoms, silicon-containing group, oxygen-containing group, sulfur-containing group, nitrogen-containing group or phosphorus-containing group, adjacent groups
- R c and R d are each independently a divalent group that binds two ligands and has 1 to 20 carbon atoms, preferably carbon atoms.
- R 19 is a hydrogen atom, a halogen atom, a hydrocarbon group having 1 to 20 carbon atoms, or carbon Represents a halogen-containing hydrocarbon group of the number 1 to 20.
- M represents a transition metal of Groups 4 to 6 in the periodic table.
- metallocene compound represented by the general formula (I) include bis (cyclopentadienyl) zirconium dichloride, bis (methylcyclopentadienyl) zirconium dichloride, bis (ethylcyclopentadienyl) zirconium dichloride, bis (Isopropylcyclopentadienyl) zirconium dichloride, bis (n-propylcyclopentadienyl) zirconium dichloride, bis (n-butylcyclopentadienyl) zirconium dichloride, bis (t-butylcyclopentadienyl) zirconium dichloride, bis (Hexylcyclopentadienyl) zirconium dichloride, bis (trimethylsilylcyclopentadienyl) zirconium dichloride, bis (trimethylsilylmethylcyclopentadienyl) zyl Nium dichloride, bis (cyclopent
- metallocene compound represented by the general formula (II) examples include ethylene-bis (cyclopentadienyl) hafnium dichloride, ethylene-bis (cyclopentadienyl) zirconium dichloride, methylene-bis (cyclopentadienyl).
- Hafnium dichloride methylene-bis (cyclopentadienyl) zirconium dichloride, isopropylidene-bis (cyclopentadienyl) hafnium dichloride, isopropylidene-bis (cyclopentadienyl) zirconium dichloride, dimethylsilylene-bis (cyclopentadi) Enyl) hafnium dichloride, dimethylsilylene-bis (cyclopentadienyl) zirconium dichloride, and the like.
- metallocene compound represented by the general formula (III) include (1,1′-ethylene) (2,2′-ethylene) biscyclopentadienylzirconium dichloride, (1,1′-ethylene) (2,2′-ethylene) bis (3-methylcyclopentadienyl) zirconium dichloride, (1,1′-ethylene) (2,2′-ethylene) bis (4-methylcyclopentadienyl) zirconium dichloride, (1,1′-ethylene) (2,2′-ethylene) bis (3,4-dimethylcyclopentadienyl) zirconium dichloride, (1,1′-ethylene) (2,2′-ethylene) bis (3 , 5-Dimethylcyclopentadienyl) zirconium dichloride, (1,1′-dimethylsilylene) (2,2′-dimethylsilylene) biscyclope Tadienylzirconium dichloride, (1,1'-dimethylsilylene) (2,2'-dimethyl
- Examples of the compound represented by the general formula (IV) include (1,1′-ethylene) (2,2′-ethylene) bisindenylzirconium dichloride, (1,1′-ethylene) (2,2 '-Ethylene) bis (3-methylindenyl) zirconium dichloride, (1,1'-ethylene) (2,2'-ethylene) bis (4-methylindenyl) zirconium dichloride, (1,1'-ethylene) (2,2′-ethylene) bis (5-methylindenyl) zirconium dichloride, (1,1′-ethylene) (2,2′-ethylene) bis (5,6-benzoindenyl) zirconium dichloride, (1 , 1'-ethylene) (2,2'-ethylene) bis (4,5-benzoindenyl) zirconium dichloride, (1,1'-ethylene) (2,2'-ethylene Bis (5,6-dimethylindenyl) zirconium dichloride, (1,1′-dimethylsilylene) (2,2
- metallocene compound used as the component (A) one kind may be used, or two or more kinds may be used in combination.
- organoaluminum oxy compound examples include a chain aluminoxane represented by the following general formula (V) and a cyclic aluminoxane represented by the following general formula (VI).
- R 20 to R 25 each independently represents a hydrocarbon group or halogen atom having 1 to 20, preferably 1 to 12 carbon atoms. , alkyl group, alkenyl group, aryl group, .n where arylalkyl group, etc. represents a polymerization degree of usually 2 to 50, preferably from 2 to 40 integer. Note that each R 20 ⁇ R 25 are each Same or different.
- aluminoxane examples include methylaluminoxane, ethylaluminoxane, isobutylaluminoxane, and the like.
- Examples of the method for producing the aluminoxane include a method in which an alkylaluminum is brought into contact with a condensing agent such as water, but the means is not particularly limited, and the reaction may be performed according to a known method.
- a method in which an organoaluminum compound is dissolved in an organic solvent and brought into contact with water a method in which an organoaluminum compound is initially added at the time of polymerization, and water is added later, a crystal water contained in a metal salt or the like
- a method of reacting water adsorbed on an inorganic or organic material with an organoaluminum compound a method of reacting a tetraalkyldialuminoxane with a trialkylaluminum, and a reaction with water.
- the aluminoxane may be insoluble in toluene.
- These aluminoxanes may be used alone or in combination of two or more.
- any ionic compound that can be converted to a cation by reacting with the metallocene compound of the component (A) can be used, but the following general formula (VII) , (VIII) can be preferably used.
- L 1 represents a Lewis base
- R 26 represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, or a carbon number of 6 to 20 selected from an aryl group, an alkylaryl group, and an arylalkyl group. Represents a hydrocarbon group.
- L 1 examples include ammonia, methylamine, aniline, dimethylamine, diethylamine, N-methylaniline, diphenylamine, N, N-dimethylaniline, trimethylamine, triethylamine, tri-n-butylamine, methyldiphenylamine, Amines such as pyridine, p-bromo-N, N-dimethylaniline, p-nitro-N, N-dimethylaniline, phosphines such as triethylphosphine, triphenylphosphine, diphenylphosphine, thioethers such as tetrahydrothiophene, benzoic acid Examples thereof include esters such as ethyl acid, and nitriles such as acetonitrile and benzonitrile.
- R 26 include a hydrogen atom, a methyl group, an ethyl group, a benzyl group, and a trityl group
- L 2 represents M 1 , R 27 R 28 M 2 , R 29 C or R 30 M 2 .
- R 27 and R 28 each independently represent a cyclopentadienyl group, a substituted cyclopentadienyl group, an indenyl group or a fluorenyl group
- R 29 represents an alkyl group having 1 to 20 carbon atoms, an aryl group, an alkyl group A hydrocarbon group having 6 to 20 carbon atoms selected from an aryl group and an arylalkyl group is shown.
- R 30 represents a macrocyclic ligand such as tetraphenylporphyrin or phthalocyanine.
- M 1 includes elements in groups 1 to 3, 11 to 13, and 17 of the periodic table
- M 2 represents elements in groups 7 to 12 of the periodic table.
- R 27 and R 28 include a cyclopentadienyl group, a methylcyclopentadienyl group, an ethylcyclopentadienyl group, and a pentamethylcyclopentadienyl group.
- R 29 include a phenyl group, a p-tolyl group, and a p-methoxyphenyl group.
- R 30 include tetraphenylporphyrin, phthalocyanine, and the like.
- M 1 include Li, Na, K, Ag, Cu, Br, I, I 3 and the like.
- M 2 include Mn, Fe, Co, Ni, and Zn. Etc.
- [Z] ⁇ represents a non-coordinating anion [Z 1 ] ⁇ or [Z 2 ] ⁇ .
- [Z 1 ] ⁇ represents an anion having a plurality of groups bonded to the element, that is, [M 3 G 1 G 2 ... G f ] ⁇ .
- M 3 represents a group 5 to 15 element of the periodic table, preferably a group 13 to 15 element of the periodic table.
- G 1 to G f are each a hydrogen atom, a halogen atom, an alkyl group having 1 to 20 carbon atoms, a dialkylamino group having 2 to 40 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, Aryloxy group having 6 to 20 carbon atoms, alkylaryl group having 7 to 40 carbon atoms, arylalkyl group having 7 to 40 carbon atoms, halogen-substituted hydrocarbon group having 1 to 20 carbon atoms, acyloxy group having 1 to 20 carbon atoms Or an organic metalloid group or a heteroatom-containing hydrocarbon group having 2 to 20 carbon atoms.
- G 1 to G f may form a ring.
- f is an integer of [(valence of central metal M 3) +1].
- [Z 2] - acid defined logarithm of the reciprocal of the acid dissociation constant (pKa) -10 below Bronsted acid alone or Bronsted acid and Lewis acid combination of conjugate base, or a general superacid
- the conjugate base of In addition, a Lewis base may be coordinated.
- M 3 include B, Al, Si, P, As, Sb, etc., preferably B And Al.
- G 1 and G 2 to G f include a dimethylamino group and a diethylamino group as a dialkylamino group, a methoxy group, an ethoxy group, an n-propoxy group, a phenoxy group as an alkoxy group or an aryloxy group, and the like.
- hydrocarbon groups methyl group, ethyl group, n-propyl group, isopropyl group, n-butyl group, isobutyl group, n-octyl group, n-eicosyl group, phenyl group, p-tolyl group, benzyl group, 4 -T-butylphenyl group, 3,5-dimethylphenyl group, etc., halogen atoms such as fluorine, chlorine, bromine, iodine, heteroatom-containing hydrocarbon groups, p-fluorophenyl group, 3,5-difluorophenyl group, Pentachlorophenyl group, 3,4,5-trifluorophenyl group, pentafluorophenyl group, 3,5-bis (to Fluoromethyl) phenyl group, bis (trimethylsilyl) methyl group or the like, an organic metalloid group, pentamethyl antimony group, a trimethylsilyl group, trimethylger
- non-coordinating anion that is, a Bronsted acid alone having a pKa of ⁇ 10 or less or a conjugate base [Z 2 ] — in combination of Bronsted acid and Lewis acid
- a trifluoromethanesulfonate anion CF 3 SO 3 ) ⁇
- bis (trifluoromethanesulfonyl) methyl anion bis (trifluoromethanesulfonyl) benzyl anion, bis (trifluoromethanesulfonyl) amide
- fluorosulfonate anion (FSO 3 ) ⁇ chlorosulfonate anion (ClSO 3 ) ⁇
- Such (b-2) component compounds include triethylammonium tetraphenylborate, tri-n-butylammonium tetraphenylborate, trimethylammonium tetraphenylborate, tetraethylammonium tetraphenylborate, tetraphenyl Methyl (tri-n-butyl) ammonium borate, benzyl (tri-n-butyl) ammonium tetraphenylborate, dimethyldiphenylammonium tetraphenylborate, triphenyl (methyl) ammonium tetraphenylborate, trimethyltetraphenylborate Anilinium, methyl pyridinium tetraphenylborate, benzylpyridinium tetraphenylborate, methyl tetraphenylborate (2-cyanopyridinium), tetrakis (pent
- This component (b-2) may be used alone or in combination of two or more.
- the use ratio of the component (A) and the component (B) is preferably a molar ratio when the component (b-1) is used as the component (B). Is 1: 1 to 1: 1,000,000, more preferably 1:10 to 1: 10,000, and when the component (b-2) is used, the molar ratio is preferably 10: 1 to 1. : 100, more preferably 2: 1 to 1:10.
- As the component (B), (b-1) and (b-2) can be used alone or in combination of two or more.
- the catalyst in the present invention may contain the above-mentioned components (A) and (B) as the main components, and (A) component, (B) component and (C) organoaluminum compound. May be contained as a main component.
- the organoaluminum compound of the component (C) the general formula (IX) (R 31 ) v AlQ 3-v (IX) (Wherein R 31 represents an alkyl group having 1 to 10 carbon atoms, Q represents a hydrogen atom, an alkoxy group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, or a halogen atom, and v represents 1 to 3 carbon atoms) Which is an integer).
- Specific examples of the compound represented by the general formula (IX) include trimethylaluminum, triethylaluminum, triisopropylaluminum, triisobutylaluminum, dimethylaluminum chloride, diethylaluminum chloride, methylaluminum dichloride, ethylaluminum dichloride, dimethylaluminum fluoride. , Diisobutylaluminum hydride, diethylaluminum hydride, ethylaluminum sesquichloride and the like. These organoaluminum compounds may be used singly or in combination of two or more.
- the use ratio of the component (A) to the component (C) is molar ratio, preferably 1: 1 to 1: 10,000, more preferably 1: 5 to 1: 2,000, and still more preferably 1: 10 to 1: 1,000.
- this component (C) the activity per transition metal can be improved, but if it is too much, the organoaluminum compound is wasted and a large amount remains in the ⁇ -olefin polymer, which is not preferable.
- the polymerization method is not particularly limited, and any method such as a bulk polymerization method, a solution polymerization method, a suspension polymerization method, a slurry polymerization method, and a gas phase polymerization method may be used.
- the polymerization temperature is usually 0 to 200 ° C., preferably 30 to 150 ° C., more preferably 40 to 120 ° C.
- the ratio of the catalyst to the raw material monomer is preferably from 1 to 10 8 , particularly preferably from 100 to 10 5 , based on the raw material monomer / the component (A) (molar ratio).
- the polymerization time is usually from 5 minutes to 20 hours, and the reaction pressure is preferably from atmospheric pressure to 0.2 MPaG, particularly preferably from atmospheric pressure to 0.1 MPaG.
- the polymerization step is preferably performed without a solvent from the viewpoint of cost, but a solvent can also be used.
- a solvent for example, aromatic hydrocarbons such as benzene, toluene, xylene and ethylbenzene, alicyclic hydrocarbons such as cyclopentane, cyclohexane and methylcyclohexane, aliphatic hydrocarbons such as pentane, hexane, heptane and octane, chloroform, Halogenated hydrocarbons such as dichloromethane can be used.
- These solvents may be used alone or in combination of two or more.
- a monomer such as 1-decene may be used as a solvent.
- a deactivator catalyst deactivator
- a solvent it is preferable to add a solvent before and after deactivation to lower the viscosity.
- quenching agent examples include alcohol, water, and aqueous solutions of acids, alkalis, oxygenated compounds, and the like, and specific examples include sodium hydroxide aqueous solution, ethanol, isopropyl alcohol, hydrochloric acid, and acetone.
- the demineralized oil phase and water are mixed and washed by stirring for 1 minute or more at a stirring strength of 0.1 kW / m 3 or more.
- the stirring intensity is 0.1 to 10 kW / m 3 , preferably 0.1 to 5 kW / m 3 , and more preferably 0.1 to 1 kW / m 3 .
- the oil phase Prior to mixing with the cleaning liquid, the oil phase may be mixed with an organic solvent such as 1-decene to adjust the liquid viscosity.
- the stirring time is preferably 2 minutes or more, more preferably 3 minutes or more, preferably 60 minutes or less, more preferably 30 minutes or less, and even more preferably 10 minutes or less.
- the washing may be continuous or batch.
- the stirring tank has a weak stirring strength (general use range: 0.1 to 1 kW / m 3 ), but is characterized by a long residence time (stirring time) (usually: several minutes to several tens of minutes).
- the stirring tank is usually composed of a container and a stirring member in the container, and the liquid to be diffused is placed in the container and stirred by rotating the stirring member at a constant speed.
- the average residence time is preferably 3 to 10 minutes. Within this range, the equipment maintenance cost of the stirring tank and the equipment maintenance cost of the filter can be suppressed.
- the stirring time is 1 minute or more, and when stirring is performed slightly stronger than usual, for example, the stirring strength is 1.5 kW / m 2. In the case of m 3 , the stirring time is 2 minutes or more. In the case of a general strength, for example, when the stirring strength is 0.8 kW / m 3 , the stirring time is 3 minutes or more. If the residence time is about several minutes to 1 hour, the agitation tank has a realistic size and is sufficiently realizable.
- the stirring tank is advantageously a continuous stirring tank (continuous flow type stirring tank) in terms of cost.
- the preferred stirring intensity and stirring time are the same as described above, and the longer the stirring time (residence time) in the continuous stirring tank, the longer the filter life can be.
- a large-sized stirring tank is required.
- a static mixer may be used when continuously stirring.
- a static mixer generally has a high stirring strength (stirring power per unit volume) (usually 50 to 500 kW / m 3 ) and a short residence time (usually 0.1 to 1 second). Therefore, the static mixer is difficult to satisfy the stirring conditions of the present invention.
- the filter can be a bag filter.
- the bag filter preferably has a nominal filtration accuracy of 5 ⁇ m or less, more preferably 3 ⁇ m or less, and particularly preferably 1 ⁇ m or less. Further, the bag filter used preferably has an absolute filtration accuracy of 15 ⁇ m or less, more preferably 10 ⁇ m or less, and particularly preferably 5 ⁇ m or less. If the filtration accuracy is too high, the starch may not be sufficiently captured.
- absolute filtration accuracy means to capture particles of 99.9% or more of the indicated diameter
- nominal filtration accuracy It means capturing 80% or more of particles having a certain diameter.
- the material of the filter of the bag filter to be used is not particularly limited, and for example, any of a filter made of nylon, a filter made of polypropylene, etc. may be used, but a filter made of polypropylene is preferable.
- the filter of the bag filter is made of polypropylene, a high filtration accuracy can be obtained with a low pressure loss due to the structure of the filter, so that the power of the pump or the like can be reduced.
- the amount of solid fine particles contained in the polymerization reaction solution after decalcification is very small and difficult to directly determine. Therefore, the content of the solid fine particles contained in the polymerization reaction liquid after deashing can be evaluated by filter clogging. Filter clogging can be evaluated from the pressure difference, the linear velocity of passage, the liquid viscosity, the filtration area, and the total amount of liquid that is passed through the polymerization reaction liquid.
- filter life can be extended by reducing filter clogging.
- the filter life is the time until the above-mentioned differential pressure reaches the allowable limit and the desired processing speed cannot be obtained.
- the liquid temperature at the time of filter passage is high. Since the liquid viscosity decreases as the liquid temperature increases, the pressure loss at the time of passing through the filter can be suppressed. By suppressing the pressure loss, it is possible to suppress the load on the filter cloth of the filter, increase the solid particulate capture efficiency, and extend the filter life.
- the liquid temperature at the time of liquid passing is too high, the light component contained in the polymerization reaction liquid volatilizes and becomes a gas-liquid mixed phase flow, which may increase the linear velocity and increase the pressure loss.
- the liquid temperature when passing through the filter is preferably 40 to 100 ° C., more preferably 60 to 90 ° C. For this reason, it is preferable to warm the cleaning solution to 40 to 100 ° C. for cleaning.
- the linear velocity and differential pressure when passing through the filter vary depending on the material and structure of the filter, so that the solid fine particles can be sufficiently removed.
- the removal rate of solid fine particles usually needs to be 98.5% or more.
- the polymerization reaction solution is distilled to distill off the light components to obtain an olefin polymer.
- Synthesis example 1 [Preparation of catalyst] In a stainless steel stirring vessel, 500 milliliters of triisobutylaluminum, (1,1'-dimethylsilylene) (2,2'-dimethylsilylene) -bis (cyclopentadienyl) zirconium dichloride per liter of toluene in a nitrogen atmosphere. Dissolve 10 mmol and 20 mmol of powdered N, N-dimethylanilinium tetrakis (pentafluorophenyl) borate, add 0.1 liter of 1-octene, and stir at room temperature for 1 hour to prepare a catalyst mixture did.
- Conversion and liquid viscosity were measured by the following methods.
- Conversion rate 0.05 g of a sample was dissolved in 5 ml of dichloromethane and calculated using gas chromatography (GC).
- GC gas chromatography
- Example 1 The demineralized diluted oil obtained in Synthesis Example 1 was charged into a batch-type stirring tank equipped with a jacket, and the jacket water was heated to 80 ° C. with warm water while pure water was reduced to an oil-water ratio (pure water / demineralized diluted oil). The mixture was added at 25 [vol / vol] and stirred for 30 minutes. The stirring strength was 0.14 kW / m 3 (stirring speed: 300 rpm). At this time, in the agitation tank, the water phase was W / O (Water in Oil) dispersion in which the water phase was dispersed in the oil phase, but most water phases (water droplets) were uniformly dispersed in the oil phase. It was visually confirmed that the mixing was sufficiently performed.
- W / O Water in Oil
- the horizontal axis represents the volume of treatment per unit area of the filter
- Example 2 The demineralized diluted oil obtained in Synthesis Example 1 was charged into a batch-type stirring tank equipped with a jacket, and the jacket water was heated to 80 ° C. with warm water while pure water was reduced to an oil-water ratio (pure water / demineralized diluted oil). The mixture was added at 25 [vol / vol] and stirred for 4 minutes. The stirring strength was 0.63 kW / m 3 (stirring rotational speed 500 rpm). At this time, in the agitation tank, the water phase was W / O dispersion in which the oil phase was dispersed in the oil phase, but most of the water phase (water droplets) was uniformly dispersed in the oil phase and mixing was sufficient. This was confirmed visually. The results are shown in Table 1. After stirring, the clogging of the filter was evaluated in the same manner as in Example 1. The results are shown in FIG.
- Comparative Example 1 The demineralized diluted oil obtained in Synthesis Example 1 was charged into a batch-type stirring tank equipped with a jacket, and the jacket water was heated to 80 ° C. with warm water while pure water was reduced to an oil-water ratio (pure water / demineralized diluted oil) The mixture was added at 25 [vol / vol] and stirred for 30 minutes. The stirring strength was set to 0.01 kW / m 3 (stirring rotational speed 200 rpm). At this time, in the agitation tank, the water phase was W / O dispersion in which the water phase was dispersed in the oil phase, but most of the water phase (water droplets) was settled below the oil phase and mixing was performed. It wasn't done enough. The results are shown in Table 1. After stirring, the clogging of the filter was evaluated in the same manner as in Example 1. The results are shown in FIG.
- Synthesis example 2 [Polymerization reaction] A raw material monomer (1-octene 5.2 kg, 1-dodecene 8.0 kg) and 9 mmol of triisobutylaluminum (9 ml of 1 mmol / ml of toluene solution) were placed in a stainless steel stirring tank having an internal volume of 30 L. The temperature was raised to 0 ° C., and 0.02 MPaG of hydrogen was introduced.
- the catalyst mixed solution prepared in the same manner as in Synthesis Example 1 was stirred while introducing it at a flow rate of 1.5 ml / min to perform a polymerization reaction. After adding 5.4 liters of the catalyst mixture, the mixture was further stirred for 1 hour. The average temperature during this polymerization reaction was 108 ° C., and the monomer conversion rate of the polymerization reaction solution was 90%.
- Comparative Example 3 The oil phase and pure water obtained in Synthesis Example 2 were mixed in a static mixer (SM) (model No. 1 / 4-N40-, manufactured by Noritake Co., Ltd.) with an oil-water ratio (pure water / demineralized diluted oil) of 0.25 [vol / vol]. 172-0) and mixed with oil and water. As shown in Table 1, the stirring time was 0.2 seconds, and the stirring intensity was 280 kW / m 3 . After stirring, the clogging of the filter was evaluated in the same manner as in Example 1. The results are shown in FIG.
- SM static mixer
- Comparative Example 4 In this comparative example, cleaning with SM was performed twice. Specifically, after washing with water in Comparative Example 3, the oil phase and pure water were further mixed with a static mixer (manufactured by Noritake, Model No. 1 / 4-N40-172-0) and mixed with oil and water. As shown in Table 1, the stirring time was 0.2 seconds, and the stirring intensity was 260 kW / m 3 . After stirring, the clogging of the filter was evaluated in the same manner as in Example 1. The results are shown in FIG.
- Comparative Example 5 In this comparative example, cleaning with SM was performed three times. Specifically, after washing with water in Comparative Example 4, the oil phase and pure water were further mixed with a static mixer (manufactured by Noritake, Model No. 1 / 4-N40-172-0) and mixed with oil and water. As shown in Table 1, the stirring time was 0.2 seconds, and the stirring intensity was 240 kW / m 3 . After stirring, the clogging of the filter was evaluated in the same manner as in Example 1. The results are shown in FIG.
- FIGS. 4 is an enlarged view of FIG. 3 and 4, it can be seen that the effect of removing solid fine particles by washing with water after deashing varies depending on the stirring time.
- the olefin polymer obtained by the production method of the present invention can be used as a lubricating oil base material.
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Abstract
Description
1.メタロセン触媒存在下、1種以上の炭素数6~20のα-オレフィンを重合してオレフィン重合体を製造し、前記触媒を失活、脱灰し、脱灰重合反応液を得た後、前記オレフィン重合体を含む脱灰重合反応液と水を混合して、0.1kW/m3以上の撹拌強度で1分以上撹拌して、前記反応液を洗浄するオレフィン重合体の製造方法。
2.前記水との混合に連続流通式撹拌槽を用いる1に記載のオレフィン重合体の製造方法。
3.1又は2に記載のオレフィン重合体の製造方法により得られるオレフィン重合体。
また、油相中の微粒子除去に用いるフィルター負荷が低減するので、フィルター寿命を延長でき、コストダウンが可能となり、生産性の高いプロセスを確立できる。
(C1)(C2)M1X1X2Y1 aY2 b (I)
(式中M1はチタン、ジルコニウム又はハフニウムを表し、C1及びC2は、それぞれ独立に、シクロペンタジエニル基又はインデニル基あるいはそれらのアルキル置換体を表し、C1及びC2は互いに同じでも異なっていてもよい。また、X1、X2は、それぞれ独立に、σ結合性配位子又はキレート性配位子を表し、X1及びX2は互いに同じでも異なっていてもよい。Y1、Y2は、それぞれ独立に、ルイス塩基を表し、Y1及びY2は互いに同じでも異なっていてもよい。a及びbは、それぞれ独立に、0又は1を表す。)
Ra及びRbの好ましい例としては、-CR7R8-、-SiR7R8-、-CR7R8-CR7R8-、及び-SiR7R8-SiR7R8-が挙げられる。
([L1-R26]k+)a([Z]-)b ・・・(VII)
([L2]k+)a([Z]-)b ・・・(VIII)
M1は、周期律表第1~3、11~13、17族元素を含むものであり、M2は、周期律表第7~12族元素を示す。
[Z]-は、非配位性アニオン[Z1]-又は[Z2]-を表す。
[Z1]-は複数の基が元素に結合したアニオン、即ち[M3G1G2・・・Gf]-を表す。ここで、M3は周期律表第5~15族元素、好ましくは周期律表第13~15族元素を示す。G1~Gfはそれぞれ水素原子、ハロゲン原子、炭素数1~20のアルキル基、炭素数2~40のジアルキルアミノ基、炭素数1~20のアルコキシ基、炭素数6~20のアリール基、炭素数6~20のアリールオキシ基、炭素数7~40のアルキルアリール基、炭素数7~40のアリールアルキル基、炭素数1~20のハロゲン置換炭化水素基、炭素数1~20のアシルオキシ基又は有機メタロイド基又は炭素数2~20のヘテロ原子含有炭化水素基を示す。G1~Gfのうち二つ以上が環を形成してもよい。fは[(中心金属M3の原子価)+1]の整数を示す。
[Z2]-は酸解離定数の逆数の対数(pKa)が-10以下のブレンステッド酸単独又はブレンステッド酸及びルイス酸の組合わせの共役塩基、又は一般的に超強酸と定義される酸の共役塩基を示す。また、ルイス塩基が配位していてもよい。
(R31)vAlQ3-v ・・・(IX)
(式中、R31は炭素数1~10のアルキル基、Qは水素原子、炭素数1~20のアルコキシ基,炭素数6~20のアリール基又はハロゲン原子を示し、vは1~3の整数である。)で示される化合物が用いられる。
重合条件については、重合温度は通常0~200℃、好ましくは30~150℃、より好ましくは40~120℃である。また、原料モノマーに対する触媒の使用割合は、原料モノマー/上記(A)成分(モル比)が好ましくは1~108,特に100~105となることが好ましい。さらに、重合時間は通常5分~20時間、反応圧力は好ましくは常圧~0.2MPaG、特に好ましくは常圧~0.1MPaGである。
洗浄液と混合する前に、油相を1-デセン等の有機溶剤と混合して液粘度を調節してもよい。
撹拌時間(接触混合時間)が長いほど微粒子が除去されるため、フィルター寿命の延長効果が高い。一方、撹拌時間が長すぎると経済的でない。
また、洗浄は連続でもバッチでもよい。
撹拌槽を用いることにより、油相中の固体微粒子を効果的に洗浄することができるため、フィルター詰まりを顕著に低減できる。
また、特殊な強撹拌を行う場合、例えば、撹拌強度5.0kW/m3の場合、撹拌時間は1分以上であり、通常よりもやや強い撹拌を行う場合、例えば、撹拌強度1.5kW/m3の場合、撹拌時間は2分以上であり、一般的な強さの場合、例えば、撹拌強度0.8kW/m3の場合、撹拌時間は3分以上である。
滞留時間が数分~1時間程度であれば、撹拌槽は現実的なサイズであり、十分実現可能なレベルである。
尚、上記公称濾過精度及び絶対濾過精度について、「絶対濾過精度」とは、表示している径の粒子を99.9%以上捕捉することをいい、「公称濾過精度」とは、表示している径の粒子を80%以上捕捉することをいう。
用いるバグフィルターのフィルターの材質は特に限定されず、例えばナイロンからなるフィルター、ポリプロピレンからなるフィルター等のいずれでもよいが、好ましくはポリプロピレンからなるフィルターである。
一般にフィルターは、低い圧力損失で処理した方が、寿命や必要動力の観点から好ましい。圧力損失が高い場合、濾過面積がより大きくしないと処理ができなくなるおそれがある。バグフィルターのフィルターがポリプロピレンからなる場合、フィルターの構造上、低い圧力損失で高い濾過精度を得ることができるため、ポンプ等の動力を小さくすることができる。
通常、脱灰後の重合反応液に含まれる固体微粒子は微量であり、直接定量することが困難である。そのため、脱灰後の重合反応液に含まれる固体微粒子の含有量は、フィルター詰まりで評価できる。フィルター詰まりは、重合反応液を実際にフィルターを通液させ、その差圧と通過線速と液粘度と濾過面積と積算通液量とから評価することができる。
尚、フィルター寿命は、上記の差圧が許容値限界まで達して、所望の処理速度が得られなくなるまでの時間とする。
しかしながら、通液時の液体温度が高すぎると、重合反応液に含まれる軽質分が揮発して気液混相流となり、線速が上昇して圧力損失が上昇する恐れがある。また、重合反応物が熱により分解して、品質を悪化させる恐れがある。
従って、フィルター通液時の液体温度は好ましくは40~100℃であり、より好ましくは60~90℃である。このため、洗浄液を40~100℃に温めて洗浄すると好ましい。
また、フィルターを連続運転で使用し続けるためには、固体微粒子の除去率は通常98.5%以上が必要である。
[触媒の調製]
ステンレス製撹拌槽に窒素雰囲気下でトルエン1リットルあたり、トリイソブチルアルミニウムを500ミリモル、(1,1’-ジメチルシリレン)(2,2’-ジメチルシリレン)-ビス(シクロペンタジエニル)ジルコニウムジクロリドを10ミリモル、及び粉末状のN,N-ジメチルアニリニウムテトラキス(ペンタフルオロフェニル)ボレートを20ミリモル溶解させ、1-オクテン0.1リットルを加えて、室温で1時間撹拌し、触媒混合液を調製した。
内容積15m3のステンレス製撹拌槽に、原料モノマー(1-オクテン4450kg、1-ドデセン6660kg)と、トリイソブチルアルミニウム1.484kgを入れて、108℃に昇温し、水素を0.02MPaG導入した。
撹拌しながら上記の触媒混合液2.6リットルを30分に1回投入した。触媒混合液を30回投入後、さらに1時間撹拌し、重合反応を行った。
この重合反応液のモノマー転化率は92%であり、40℃における液粘度は53.5mPa・sであった。
(1)転化率
試料0.05gをジクロロメタン5mlに溶解してガスクロマトグラフィー(GC)を用いて算出した。
(GC測定条件)
カラム:HT-SIMDISTCB(5m×0.53mmφ,膜厚:0.17μm)
カラム温度:40℃(0.1min)、20℃/minで420℃まで上昇、420℃(15min)
注入口(COC)温度:オーブントラック
検出器(FID)温度:440℃
キャリアガス:He
線速度:40cm/sec
モード:コンスタントフロー
注入量:0.5μl
(2)液粘度
エー・アンド・デイ株式会社製の音叉型振動式粘度計で測定した。
撹拌槽に、1wt%水酸化ナトリウム水溶液を2000kg加えて、1時間撹拌混合した後、1時間静置して油水を分離した。この撹拌槽から、脱灰油相(重合反応液)を抜き出した。
その後、この脱灰油相180gと1-デセン180gを混合して、40℃における液粘度を2.8mPa・sに調整し、脱灰希釈油を得た。
合成例1で得た脱灰希釈油を、ジャケット付のバッチ式撹拌槽に仕込み、ジャケットを温水で80℃に加温しながら、純水を油水比(純水/脱灰希釈油)0.25[vol/vol]で加えて30分間撹拌した。撹拌強度は0.14kW/m3(撹拌回転数300rpm)とした。
この際、撹拌槽内では、油相中に水相が分散しているW/O(Water in Oil)分散であったが、ほとんどの水相(水滴)は、油相中で均一に分散し、混合は十分に行われていることを目視で確認した。結果を表1に示す。
撹拌後、15分間静置して、油相を抜き出し、バグフィルター(イートン社製、ACCUGAFフィルターバッグ(型番:AGF53))の濾布に通液した。濾布前後の差圧(ΔP)、液粘度(μ)、通過線速(u)、濾過面積(A)、積算通液量(V)からフィルターの目詰まりを評価した。結果を図1に示す。
合成例1で得た脱灰希釈油を、ジャケット付のバッチ式撹拌槽に仕込み、ジャケットを温水で80℃に加温しながら、純水を油水比(純水/脱灰希釈油)0.25[vol/vol]で加えて4分間撹拌した。撹拌強度は0.63kW/m3(撹拌回転数500rpm)とした。
この際、撹拌槽内では、油相中に水相が分散しているW/O分散であったが、ほとんどの水相(水滴)は、油相中で均一に分散し、混合は十分に行われていることを目視で確認した。結果を表1に示す。
撹拌後、実施例1と同様にフィルターの目詰まりを評価した。結果を図1に示す。
合成例1で得た脱灰希釈油を、ジャケット付のバッチ式撹拌槽に仕込み、ジャケットを温水で80℃に加温しながら、純水を油水比(純水/脱灰希釈油)0.25[vol/vol]で加えて30分間撹拌した。撹拌強度は0.01kW/m3(撹拌回転数200rpm)とした。
この際、撹拌槽内では、油相中に水相が分散しているW/O分散であったが、ほとんどの水相(水滴)は油相の下の方に沈降した状態で、混合が十分には行われていなかった。結果を表1に示す。
撹拌後、実施例1と同様にフィルターの目詰まりを評価した。結果を図1に示す。
合成例1で得た脱灰希釈油を、ガラス製シュレンク瓶に仕込み、外壁をテープヒーターで80℃に加温しながら、油水比(純水/脱灰希釈油)0.25[vol/vol]で純水を加えて、10分間マグネチックスターラーで撹拌した。撹拌強度は0.04kW/m3(撹拌回転数450rpm)とした。
この際、撹拌槽内では、油相中に水相が分散しているW/O分散であったが、ほとんどの水相(水滴)は油相の下の方に沈降した状態で、混合が十分には行われていなかった。結果を表1に示す。
撹拌後、実施例1と同様にフィルターの目詰まりを評価した。結果を図1に示す。
[重合反応]
内容積30Lのステンレス製撹拌槽に、原料モノマー(1-オクテン5.2kg、1-ドデセン8.0kg)と、トリイソブチルアルミニウム9ミリモル(1ミリモル/ミリリットルのトルエン溶液9ミリリットル)を入れて、95℃に昇温し、水素を0.02MPaG導入した。
内容積20Lのステンレス製容器に撹拌子と、1-デセン5kg、1wt%水酸化ナトリウム水溶液2kgを仕込み、窒素雰囲気で、上記重合反応液5kgを移送した。容器内を撹拌子で1時間撹拌混合した後、1時間静置して油水を分離した。この撹拌槽から油相を抜き出した。この油相の液粘度は、40℃において3.5mPa・sであった。
合成例2で得た油相と純水を、油水比(純水/脱灰希釈油)0.25[vol/vol]で、スタティックミキサー(SM)(ノリタケ製、型番1/4-N40-172-0)に通液して油水混合した。表1に示すように、撹拌時間は0.2秒、撹拌強度は280kW/m3とした。
撹拌後、実施例1と同様にフィルターの目詰まりを評価した。結果を図2に示す。
この比較例ではSMによる洗浄を2回行った。具体的には、比較例3の水洗後さらに、油相と純水を、油水比(純水/脱灰希釈油)0.25[vol/vol]で、スタティックミキサー(ノリタケ製、型番1/4-N40-172-0)に通液して油水混合した。表1に示すように、撹拌時間は0.2秒、撹拌強度は260kW/m3とした。
撹拌後、実施例1と同様にフィルターの目詰まりを評価した。結果を図2に示す。
この比較例ではSMによる洗浄を3回行った。具体的には、比較例4の水洗後さらに、油相と純水を、油水比(純水/脱灰希釈油)0.25[vol/vol]で、スタティックミキサー(ノリタケ製、型番1/4-N40-172-0)に通液して油水混合した。表1に示すように、撹拌時間は0.2秒、撹拌強度は240kW/m3とした。
撹拌後、実施例1と同様にフィルターの目詰まりを評価した。結果を図2に示す。
図3,4より、脱灰後の水洗による固体微粒子の除去効果は、撹拌時間によって異なることが分かる。
この明細書に記載の文献及び本願のパリ優先の基礎となる日本出願明細書の内容を全てここに援用する。
Claims (3)
- メタロセン触媒存在下、1種以上の炭素数6~20のα-オレフィンを重合してオレフィン重合体を製造し、前記触媒を失活、脱灰し、脱灰重合反応液を得た後、前記オレフィン重合体を含む脱灰重合反応液と水を混合して、0.1kW/m3以上の撹拌強度で1分以上撹拌して、前記反応液を洗浄するオレフィン重合体の製造方法。
- 前記水との混合に連続流通式撹拌槽を用いる請求項1に記載のオレフィン重合体の製造方法。
- 請求項1又は2に記載のオレフィン重合体の製造方法により得られるオレフィン重合体。
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US10731096B2 (en) | 2015-08-21 | 2020-08-04 | Exxonmobil Chemical Patents Inc. | Lubricant base stock blends |
US10611980B2 (en) | 2015-10-15 | 2020-04-07 | Exxonmobil Chemical Patents Inc. | Lubricant containing high-viscosity metallocene polyalpha-olefins |
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