WO2012032908A1 - 安定化ポリマーの製造方法 - Google Patents
安定化ポリマーの製造方法 Download PDFInfo
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- WO2012032908A1 WO2012032908A1 PCT/JP2011/068688 JP2011068688W WO2012032908A1 WO 2012032908 A1 WO2012032908 A1 WO 2012032908A1 JP 2011068688 W JP2011068688 W JP 2011068688W WO 2012032908 A1 WO2012032908 A1 WO 2012032908A1
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- 0 Cc(cc(*)cc1*)c1O Chemical compound Cc(cc(*)cc1*)c1O 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/44—Polymerisation in the presence of compounding ingredients, e.g. plasticisers, dyestuffs, fillers
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/0091—Complexes with metal-heteroatom-bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/37—Thiols
- C08K5/372—Sulfides, e.g. R-(S)x-R'
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/52—Phosphorus bound to oxygen only
- C08K5/527—Cyclic esters
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F2/00—Processes of polymerisation
- C08F2/38—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation
- C08F2/40—Polymerisation using regulators, e.g. chain terminating agents, e.g. telomerisation using retarding agents
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
- C08K5/5317—Phosphonic compounds, e.g. R—P(:O)(OR')2
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/49—Phosphorus-containing compounds
- C08K5/51—Phosphorus bound to oxygen
- C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
- C08K5/5317—Phosphonic compounds, e.g. R—P(:O)(OR')2
- C08K5/5333—Esters of phosphonic acids
- C08K5/5357—Esters of phosphonic acids cyclic
Definitions
- the present invention relates to a method for producing a stabilized polymer. Specifically, even if a specific phenolic antioxidant is added before or during polymerization of a monomer having an ethylenically unsaturated bond, inhibition of polymerization of the monomer is suppressed.
- the present invention relates to a method for producing a stabilized polymer.
- Polymer is poor in stability to heat and light, and when exposed to high temperature environment or strong light, it is easily oxidized / degraded and the life required for plastic products cannot be obtained.
- a stabilizer such as a phenol-based antioxidant, a phosphorus-based antioxidant, a sulfur-based antioxidant, a hydroxylamine compound, a hindered amine compound, an ultraviolet absorber, an acid scavenger, etc. should be added. Is generally done.
- the phenolic antioxidant has a high stabilizing effect against thermal oxidation of a polymer obtained from a monomer having an ethylenically unsaturated bond such as polyolefin, and can impart resistance to oxidation and discoloration during storage to the polymer. Therefore, the utility value is high as a stabilizer of a polymer obtained from a monomer having an ethylenically unsaturated bond such as polyolefin.
- Patent Document 1 a phenolic antioxidant such as tetrakis (3- (3,5-ditert-butyl-4-hydroxyphenyl) propionyloxymethyl) methane, which is a general-purpose polyolefin, inhibits the catalytic activity of the polymerization catalyst. Therefore, it is described that it cannot be added before polymerization, and a method of forming a complex with an ether compound is proposed for a Ziegler catalyst supported on magnesium chloride.
- tetrakis 3- (3,5-ditert-butyl-4-hydroxyphenyl) propionyloxymethyl
- Patent Documents 2 to 4, etc. the present inventors perform a masking process by mixing an organoaluminum compound and a phenolic antioxidant usually used in olefin polymerization in an existing catalyst feed tank or polymerization tank.
- a method for stabilizing a polymer without reducing the activity of the polymerization catalyst has been proposed.
- Patent Document 1 since the treatment of the catalyst is complicated, there has been a demand for a method for stabilizing a polymer that is simpler and does not limit the catalytic action.
- Patent Documents 2 to 4 do not mention a phenolic antioxidant having an ether bond or a thioether bond in the molecule.
- an object of the present invention is to provide a method for producing a stabilized polymer in which inhibition of monomer polymerization is suppressed even when a specific phenolic antioxidant is added before or during polymerization of a monomer having an ethylenically unsaturated bond Is to provide.
- the inventors of the present invention added a phenolic antioxidant having a specific ether bond or thioether bond masked with an organoaluminum compound before or during polymerization of the monomer. Even when the inhibition of the activity of the polymerization catalyst was suppressed, it was found that a sufficiently stabilized polymer was obtained, and the present invention was completed.
- the method for producing a stabilized polymer of the present invention comprises at least one phenolic antioxidant represented by the following general formula (I), (II) or (III) masked with organoaluminum, ethylenically. It comprises a step of adding to the catalyst system or polymerization system before or during the polymerization of the monomer having an unsaturated bond.
- R 1 , R 2 , R 3 , R 4 , R 5 and R 6 each independently represents a hydrogen atom, a branched or substituted alkyl group having 1 to 5 carbon atoms, or a substituted group.
- R 7 and R 8 are each independently a hydrogen atom, a branched or substituted alkyl group having 1 to 5 carbon atoms, or an optionally substituted carbon atom having 5 to 5 carbon atoms).
- R 8 represents an aryl group having 6 to 12 carbon atoms which may have a substituent
- R 9 and R 10 each independently have 1 to 1 carbon atoms which may have a branched or substituted group.
- 18 represents an alkyl group or a metal atom, and when the metal atom is a divalent or higher metal, R 9 and R 10 may be one metal atom, and Z is the number of carbon atoms that may have a branch or a substituent.
- R 11 , R 12 and R 13 each independently represents a branched or substituted alkyl group having 1 to 18 carbon atoms, or a carbon having an ether bond, a thioether bond or a disulfide bond
- R 11 , R 12 and R 13 each independently represents a branched or substituted alkyl group having 1 to 18 carbon atoms, or a carbon having an ether bond, a thioether bond or a disulfide bond
- the phenolic antioxidant is added in an amount of 0.001 to 0.5 to 100 parts by mass of a polymer obtained by polymerizing a monomer having an ethylenically unsaturated bond. It is preferable to add so that it may become a mass part.
- the organoaluminum compound is preferably trialkylaluminum.
- the method for producing a stabilized polymer of the present invention preferably further comprises a step of adding a phosphorus-based antioxidant to the catalyst system or the polymerization system before or during the polymerization of the monomer having an ethylenically unsaturated bond. .
- the monomer having an ethylenically unsaturated bond is preferably an ⁇ -olefin.
- the olefin polymer of the present invention is obtained by the above-described method for producing a stabilized polymer.
- the present invention provides a method for producing a stabilized polymer in which inhibition of monomer polymerization is suppressed even when a specific phenolic antioxidant is added before or during polymerization of a monomer having an ethylenically unsaturated bond. be able to.
- the phenolic antioxidant used in the present invention is a compound represented by the above general formula (I), (II) or (III).
- R 1 , R 2 , R 3 , R 4 , R 5 and R 6 each independently represents a hydrogen atom, a branched or substituted alkyl group having 1 to 5 carbon atoms, or a substituted group.
- alkyl group having 1 to 5 carbon atoms which may have a branch or a substituent represented by R 1 , R 2 , R 3 , R 4 , R 5 and R 6 in the general formula (I)
- Examples thereof include a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, a secondary butyl group, a tertiary butyl group, an isobutyl group, a pentyl group, an isopentyl group, and a tertiary pentyl group.
- alkyl groups may be interrupted by an oxygen atom, a sulfur atom, or an aryl group having 6 to 12 carbon atoms, and the hydrogen atom in the alkyl group is a hydroxy group, a cyano group, an alkenyl group, an alkenyl group.
- Chain aliphatic groups such as oxy group, pyrrole, furan, thiophene, imidazole, oxazole, thiazole, pyrazole, isoxazole, isothiazole, pyridine, pyridazine, pyrimidine, pyrazine, piperidine, piperazine, morpholine, 2H-pyran, 4H- Substituted with cyclic aliphatic groups such as pyran, phenyl, biphenyl, triphenyl, naphthalene, anthracene, pyrrolidine, pyridine, indolizine, indole, isoindole, indazole, purine, quinolidine, quinoline, isoquinoline, or cycloalkyl groups It may be. These interruptions or substitutions may be combined.
- Examples of the cycloalkyl group having 5 to 8 carbon atoms which may have a substituent represented by R 1 , R 2 , R 3 , R 4 , R 5 and R 6 in the general formula (I) include Examples include a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, and a cyclooctyl group.
- the hydrogen atom in these cycloalkyl groups may be substituted with an alkyl group, an alkenyl group, an alkenyloxy group, a hydroxy group, or a cyano group.
- the alkyl group may have a branch and may be interrupted by an oxygen atom or a sulfur atom.
- Examples of the aryl group having 6 to 12 carbon atoms which may have a substituent represented by R 1 , R 2 , R 3 , R 4 , R 5 and R 6 in the general formula (I) include, for example, , Phenyl group, methylphenyl group, p-tolyl group, o-tolyl group, m-tolyl group, butylphenyl group, 4-hydroxyphenyl group, 3,4,5-trimethoxyphenyl group, 4-tert-butylphenyl Group, 2,4-ditertiarybutylphenyl group, 3,5-ditertiarybutylphenyl group, biphenyl group, naphthyl group and the like.
- the hydrogen atom in these aryl groups may be substituted with a hydroxy group, a cyano group, a halogen atom, the chain aliphatic group or the cyclic aliphatic group.
- the alkyl group may have a branch and may be interrupted by an oxygen atom or a sulfur atom.
- Examples of the alkylidene group having 1 to 4 carbon atoms represented by X in the general formula (I) include a methylene group, an ethylidene group, an isopropylidene group, a propylidene group, and a butylidene group.
- R 7 and R 8 are each independently a hydrogen atom, a branched or substituted alkyl group having 1 to 5 carbon atoms, or an optionally substituted carbon atom having 5 to 5 carbon atoms).
- 8 represents an aryl group having 6 to 12 carbon atoms which may have a substituent
- R 9 and R 10 each independently have 1 to 1 carbon atoms which may have a branched or substituted group.
- 18 represents an alkyl group or a metal atom, and when the metal atom is a divalent or higher metal, R 9 and R 10 may be one metal atom, and Z is the number of carbon atoms that may have a branch or a substituent. Represents 1 to 4 alkylene groups.
- alkyl group having 1 to 18 carbon atoms which may have a branch or substituent represented by R 9 and R 10 in the general formula (II) include, for example, a methyl group, an ethyl group, and a propyl group Isopropyl group, butyl group, isoamyl group, hexyl group, 2-ethylhexyl group, nonyl group, 3,5,5-trimethylhexyl group, isodecyl group, dodecyl group, isotridecyl group, tetradecyl group, hexadecyl group, heptadecyl group, octadecyl group Group, trifluoromethyl group, chloromethyl group, bromoethyl group, cyclohexyl group, 2-butoxyethyl group and the like.
- alkyl groups may have a branch, and a hydrogen atom in the alkyl group may be substituted with a hydroxy group, a cyano group, a halogen atom, the chain aliphatic group, or the cyclic aliphatic group.
- the metal atom represented by R 9 and R 10 lithium, sodium, potassium, magnesium, calcium, Al (OH) and the like.
- alkylene group having 1 to 4 carbon atoms which may have a branch or substituent represented by Z in the general formula (II) include a methylene group, an ethylene group, a propylene group and a butene group. .
- These alkylene groups may have a branch, and a hydrogen atom in the alkylene group may be substituted with a hydroxy group, a cyano group, a halogen atom, the chain aliphatic group, or the cyclic aliphatic group. .
- R 11 , R 12 and R 13 each independently represents a branched or substituted alkyl group having 1 to 18 carbon atoms, or a carbon having an ether bond, a thioether bond or a disulfide bond
- alkyl group having 1 to 18 carbon atoms which may have a branch or substituent represented by R 11 , R 12 and R 13 in the general formula (III) include those in the general formula (II). include the same alkyl group which may have a branch or a substituent of R 9 and R 10.
- an alkyl group having 2 to 18 carbon atoms having an ether bond, a thioether bond or a disulfide bond, one or two or more ether bonds, thioether groups or disulfide bonds are included on the main chain of the alkyl group. Is mentioned.
- phenolic antioxidant represented by the general formula (I) include the following compounds. However, the present invention is not limited by the following compounds.
- phenolic antioxidant represented by the general formula (II) include the following compounds. However, the present invention is not limited by the following compounds.
- phenolic antioxidant represented by the general formula (III) include the following compounds. However, the present invention is not limited by the following compounds.
- the phenol-based antioxidant represented by the above (I), (II) or (III) is preferably added to 0.1 part by mass with respect to 100 parts by mass of a polymer obtained by polymerizing a monomer having an ethylenically unsaturated bond. 001 to 0.5 parts by mass, more preferably 0.005 to 0.3 parts by mass is added.
- the production method of the present invention includes a step of adding one or more phenolic antioxidants masked with an organoaluminum compound to a catalyst system or a polymerization system before or during polymerization of a monomer having an ethylenically unsaturated bond.
- the method for adding the masked phenolic antioxidant is not particularly limited. As a preferred embodiment, the masked phenolic antioxidant is added to a catalyst feed tank, a polymerization apparatus or a production line and mixed.
- the masking can be performed by mixing and stirring the organoaluminum compound and the phenolic antioxidant in an inert solvent. By mixing and stirring, the hydrogen of the phenolic hydroxyl group of the phenolic antioxidant is replaced with an organoaluminum compound.
- the phenolic antioxidant and the organic aluminum may be mixed and stirred before adding to the catalyst system or polymerization system. The phenolic antioxidant and the organic aluminum may be added to the catalyst system or polymerization system and mixed. Also good.
- the by-product compound does not affect the polymerization reaction or polymer of the monomer, it can be used as it is, but if the by-product compound inhibits the polymerization, the compound is reduced in pressure. It is preferable to add to the catalyst system or polymerization system after removing by distillation or the like.
- the masked phenolic antioxidant can regenerate phenol by reacting with a hydrogen-donating compound such as water, alcohol or acid added as a deactivation treatment of the polymerization catalyst after polymerization.
- organoaluminum compound examples include alkylaluminum and alkylaluminum hydride, and alkylaluminum is preferable, and trialkylaluminum is particularly preferable.
- examples of the trialkylaluminum include trimethylaluminum, triethylaluminum, tri-n-propylaluminum, triisobutylaluminum, tri-n-hexylaluminum, tri-n-octylaluminum, and the like. Mixtures can be used.
- the aluminoxane obtained by reaction of alkylaluminum or alkylaluminum hydride and water can be used similarly.
- the inert solvent examples include aliphatic and aromatic hydrocarbon compounds.
- the aliphatic hydrocarbon compound examples include saturated hydrocarbon compounds such as n-pentane, n-hexane, n-heptane, n-octane, isooctane and purified kerosene, and cyclic saturated hydrocarbons such as cyclopentane, cyclohexane and cycloheptane.
- the aromatic hydrocarbon compound include compounds such as benzene, toluene, ethylbenzene, and xylene. Among these compounds, those which are n-hexane, n-heptane or gasoline fraction are preferably used.
- the concentration of the organoaluminum compound in the inert solvent is preferably 0.001 to 0.5 mol / L, particularly preferably 0.01 to 0.1 mol / L.
- Examples of the monomer having an ethylenically unsaturated bond used in the present invention include ethylene, propylene, 1-butene, 1-hexene, 3-methyl-1-butene, 3-methyl-1-pentene, 4-methyl- Examples thereof include 1-pentene, vinylcycloalkane, styrene, and derivatives thereof.
- the monomer having an ethylenically unsaturated bond used in the present invention may be one type or a combination of two or more types, but a combination of ethylene or ⁇ -olefin monomers is preferable.
- ethylene alone, a combination of ethylene-propylene, a combination of ethylene-propylene-butene and the like may be mentioned, and further a combination of an ⁇ -olefin monomer and a non-conjugated diene monomer may be used.
- the polymerization is carried out in an inert gas atmosphere such as nitrogen in the presence of a polymerization catalyst, but may be carried out in the inert solvent described above.
- an active hydrogen compound, a particulate carrier, an organoaluminum compound, an ion exchange layered compound, and an inorganic silicate may be added as long as polymerization is not inhibited.
- the polymerization catalyst is not particularly limited, and a known polymerization catalyst can be used.
- transition metals of Group 3 to 11 of the periodic table for example, titanium, zirconium, hafnium, vanadium, iron, nickel, Lead, platinum, yttrium, samarium, etc.
- Typical polymerization catalysts include Ziegler catalysts, Ziegler-Natta catalysts comprising a titanium-containing solid transition metal component and an organometallic component, and groups 4 to 6 of the periodic table having at least one cyclopentadienyl skeleton.
- metallocene catalysts comprising a transition metal compound and a promoter component.
- the use of an electron donating compound is preferable because a high-quality polymer can be obtained.
- Examples of the electron donating compound include ether compounds, ester compounds, ketone compounds, alkoxysilane compounds, and the like. A single compound may be added to the electron donating compound, or a plurality of compounds may be added as necessary.
- ether compounds include diethyl ether, dipropyl ether, diisopropyl ether, di-n-butyl ether, diethylene glycol dimethyl ether, propylene glycol dimethyl ether, ethylene oxide, tetrahydrofuran, 2,2,5,5-tetramethyltetrahydrofuran, dioxane and the like. Is mentioned.
- ester compound examples include methyl acetate, ethyl acetate, acetic acid-n-propyl, isopropyl acetate, methyl propionate, ethyl propionate, propionate-n-propyl, methyl methacrylate, ethyl methacrylate, methacrylic acid- n-propyl, ethyl phenylacetate, methyl benzoate, ethyl benzoate, phenyl benzoate, methyl toluate, ethyl toluate, methyl anisate, ethyl anisate, methyl methoxybenzoate, ethyl methoxybenzoate, methyl methacrylate, Examples thereof include ethyl methacrylate, dimethyl phthalate, diethyl phthalate, dipropyl phthalate, dibutyl phthalate, diisobutyl phthalate, dihexyl phthalate, ⁇ -butyrol
- ketone compound examples include acetone, diethyl ketone, methyl ethyl ketone, acetophenone, and the like.
- alkoxysilane compounds include tetramethoxysilane, ethyltrimethoxysilane, propyltrimethoxysilane, isopropyltrimethoxysilane, t-butyltrimethoxysilane, i-butyltrimethoxysilane, phenyltrimethoxysilane, cyclohexyltri Methoxysilane, diethyldimethoxysilane, dipropyldimethoxysilane, diisopropyldimethoxysilane, diphenyldimethoxysilane, t-butylmethyldimethoxysilane, t-butylethyldimethoxysilane, t-butyl-n-propyldimethoxysilane, t-butylisopropyldimethoxysilane Cyclohexylmethyldimethoxysilane, tetraeth
- a conventionally used method can be employed.
- aliphatic hydrocarbons such as butane, pentane, hexane, heptane, isooctane
- alicyclic hydrocarbons such as cyclopentane, cyclohexane, methylcyclohexane
- aromatic hydrocarbons such as toluene, xylene, ethylbenzene, gasoline fraction
- hydrogen A method for carrying out polymerization in the liquid phase in the presence of an inert solvent such as a liquefied diesel fraction, a method for carrying out polymerization using the liquefied olefin itself as a medium, and a method for carrying out polymerization in the gas phase under conditions where there is substantially no liquid phase
- a polymerization method in which two or more of these are combined can also be used.
- the polymerization may be either a palindromic or continuous process, and may be a one-stage
- a continuous reaction tank in an existing polymerization facility may be used as it is, and conventional polymerization facilities such as size, shape, and material can be used without any particular limitation.
- the polymerization of the monomer having an ethylenically unsaturated bond may contain a catalyst component other than the polymerization catalyst, for example, a carrier and the like as long as the polymerization is not inhibited.
- a catalyst component other than the polymerization catalyst for example, a carrier and the like as long as the polymerization is not inhibited.
- the catalyst is supported on the carrier, the powder property of the monomer having an ethylenically unsaturated bond is improved, and the granulation step can be omitted.
- the type of the carrier is not limited, and examples thereof include inorganic carriers such as inorganic oxides and organic carriers such as porous polyolefin, and a plurality of them may be used in combination.
- the inorganic carrier examples include silica, alumina, magnesium oxide, zirconium oxide, titanium oxide, iron oxide, calcium oxide, zinc oxide and the like, magnesium halides such as magnesium chloride and magnesium bromide, and magnesium alkoxides such as magnesium ethoxide. Etc.
- inorganic carriers include ion exchange layered compounds.
- the ion-exchangeable layered compound has a crystal structure in which surfaces formed by ionic bonds or the like are stacked in parallel with a weak bonding force, and the ions contained therein can be exchanged.
- Specific examples thereof include kaolin, bentonite, talc, kaolinite, vermiculite, montmorillonite group, mica group, ⁇ -Zr (HAsO 4 ) 2 ⁇ H 2 O, ⁇ -Zr (HPO 4 ) 2 ⁇ H 2 O, ⁇ -Sn (HPO 4 ) 2 ⁇ H 2 O, ⁇ -Ti (NH 4 PO 4 ) 2 ⁇ H 2 O, and the like can be given.
- organic carrier examples include polyethylene, polypropylene, polystyrene, ethylene-butene copolymer, ethylene-propylene copolymer, polymethacrylic acid ester, polyacrylic acid ester, polyacrylonitrile, polyamide, polycarbonate, and polyethylene terephthalate.
- examples thereof include polyester, polyvinyl chloride, and the like, and these may be crosslinked, for example, as a styrene-divinylbenzene copolymer.
- a catalyst in which a catalyst is chemically bonded to these organic supports can be used.
- the particle size of these carriers is generally 0.1 to 300 ⁇ m, preferably 1 to 200 ⁇ m, more preferably 10 to 100 ⁇ m.
- the particle size is small, a finely divided polymer is formed, and when the particle size is too large, handling of the powder becomes difficult because coarse particles are generated.
- the pore volume of these carriers is usually from 0.1 to 5 cm 2 / g, preferably from 0.3 to 3 cm 2 / g.
- the pore volume can be measured by, for example, the BET method or the mercury intrusion method.
- the above polymer can be further blended with other additives usually used in polymers obtained from monomers having an ethylenically unsaturated bond, if necessary.
- other additives can be added at the time of polymerization of a monomer having an ethylenically unsaturated bond, as long as the polymerization is not inhibited. Examples thereof include a method of mixing with the polymer in an appropriate blending amount, and melt-kneading with a molding machine such as an extruder, and granulating and molding.
- additives examples include phosphorus antioxidants, ultraviolet absorbers, hindered amine compounds, heavy metal deactivators, nucleating agents, flame retardants, metal soaps, hydrotalcite, fillers, lubricants, and antistatic agents. Agents, pigments, dyes, plasticizers and the like.
- Examples of the phosphorus antioxidant include triphenyl phosphite, trisnonylphenyl phosphite, tris (2,4-ditertiarybutylphenyl) phosphite, tris (2,4-ditertiarybutyl-5- Methylphenyl) phosphite, tris [2-tert-butyl-4- (3-tert-butyl-4-hydroxy-5-methylphenylthio) -5-methylphenyl] phosphite, tridecyl phosphite, octyldiphenylphos Phyto, di (decyl) monophenyl phosphite, di (tridecyl) pentaerythritol diphosphite, di (nonylphenyl) pentaerythritol diphosphite, bis (2,4-ditert-butylphenyl) pentaerythr
- the amount of the phosphorus-based antioxidant used is preferably 0.001 to 3 parts by weight, more preferably 0.005 to 0.5 parts by weight with respect to 100 parts by weight of the polymer.
- ultraviolet absorber examples include 2,4-dihydroxybenzophenone, 2-hydroxy-4-methoxybenzophenone, 2-hydroxy-4-octoxybenzophenone, and 5,5′-methylenebis (2-hydroxy-4-methoxybenzophenone).
- 2-hydroxybenzophenones such as 2-; 2- (2-hydroxy-5-methylphenyl) benzotriazole, 2- (2-hydroxy-5-tert-octylphenyl) benzotriazole, 2- (2-hydroxy-3, 5-di-tert-butylphenyl) -5-chlorobenzotriazole, 2- (2-hydroxy-3-tert-butyl-5-methylphenyl) -5-chlorobenzotriazole, 2- (2-hydroxy-3,5 -Dicumylphenyl) benzotriazole, 2,2'-methylenebis (4-tertiary Octyl-6-benzotriazolylphenol), polyethylene glycol ester of 2- (2-hydroxy-3-tert-butyl-5-carboxyphenyl) benzotriazole, 2- [2-hydroxy-3- (2-acryloyloxy) Ethyl) -5-methylphenyl] benzotriazole, 2- [2-hydroxy-3- (2-methacryloyloxyethyl) -5
- hindered amine light stabilizer examples include 2,2,6,6-tetramethyl-4-piperidyl stearate, 1,2,2,6,6-pentamethyl-4-piperidyl stearate, 2,2, 6,6-tetramethyl-4-piperidylbenzoate, bis (2,2,6,6-tetramethyl-4-piperidyl) sebacate, tetrakis (2,2,6,6-tetramethyl-4-piperidyl) -1 , 2,3,4-butanetetracarboxylate, tetrakis (1,2,2,6,6-pentamethyl-4-piperidyl) -1,2,3,4-butanetetracarboxylate, bis (2,2, 6,6-tetramethyl-4-piperidyl) .di (tridecyl) -1,2,3,4-butanetetracarboxylate, bis (1,2,2,6,6-pentamethyl-4 Piperidyl) -di (tridecyl) -1,2,3,
- heavy metal deactivator examples include salicylamido-1,2,4-triazol-3-yl, bissalicylic acid hydrazide, dodecandioyl bis (2- (2-hydroxybenzoyl) hydrazide), bis (3- (3 , 5-di-t-butyl-4-hydroxyphenyl) propionic acid) hydrazide, etc., preferably 0.001 to 10 parts by mass, more preferably 0.05 to 100 parts by mass of the polymer. Up to 5 parts by weight are used.
- nucleating agent examples include carboxylic acids such as sodium benzoate, aluminum 4-tert-butylbenzoate, sodium adipate and disodium bicyclo [2.2.1] heptane-2,3-dicarboxylate.
- Metal salts sodium bis (4-tert-butylphenyl) phosphate, sodium-2,2′-methylenebis (4,6-ditert-butylphenyl) phosphate and lithium-2,2′-methylenebis (4,6-di) Phosphoric acid ester metal salts such as tert-butylphenyl) phosphate, polyhydric alcohol derivatives such as dibenzylidene sorbitol, bis (methylbenzylidene) sorbitol, bis (p-ethylbenzylidene) sorbitol, and bis (dimethylbenzylidene) sorbitol, N, N ′, N ′′ -tris [2-methylcyclohexyl -1,2,3
- the flame retardant examples include aromatic phosphates such as triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, cresyl-2,6-xylenyl phosphate, and resorcinol bis (diphenyl phosphate).
- aromatic phosphates such as triphenyl phosphate, tricresyl phosphate, trixylenyl phosphate, cresyl diphenyl phosphate, cresyl-2,6-xylenyl phosphate, and resorcinol bis (diphenyl phosphate).
- Esters such as divinyl phenylphosphonate, diallyl phenylphosphonate and phenylphosphonic acid (1-butenyl), phenyl diphenylphosphinate, methyl diphenylphosphinate, 9,10-dihydro-9-oxa-10-phospha Phosphinic acid esters such as phenanthrene-10-oxide derivatives, phosphazene compounds such as bis (2-allylphenoxy) phosphazene and dicresyl phosphazene, melamine phosphate, melamine pyrophosphate, Melamine phosphate, melam polyphosphate, ammonium polyphosphate, phosphorus-containing vinylbenzyl compounds and phosphorus-based flame retardants such as red phosphorus, metal hydroxides such as magnesium hydroxide and aluminum hydroxide, brominated bisphenol A type epoxy resin, bromine Phenol novolac epoxy resin, hexabromobenzene
- the filler examples include talc, mica, calcium carbonate, calcium oxide, calcium hydroxide, magnesium carbonate, magnesium hydroxide, magnesium oxide, magnesium sulfate, aluminum hydroxide, barium sulfate, glass powder, glass fiber, clay, Dolomite, mica, silica, alumina, potassium titanate whisker, wollastonite, fibrous magnesium oxysulfate and the like are preferable.
- the filler preferably has an average particle diameter (spherical or flat) or an average fiber diameter (needle or fibrous) of 5 ⁇ m or less. The amount of the filler used can be appropriately set within a range not hindering the present invention.
- the above-mentioned lubricant is added for the purpose of imparting lubricity to the surface of the molded body and enhancing the effect of preventing damage.
- the lubricant include unsaturated fatty acid amides such as oleic acid amide and erucic acid amide; saturated fatty acid amides such as behenic acid amide and stearic acid amide. These may be used alone or in combination of two or more.
- the amount of the lubricant added is preferably 0.03 to 2 parts by mass, more preferably 0.04 to 1 part by mass with respect to 100 parts by mass of the polymer. If the amount is less than 0.03 parts by mass, the desired lubricity may not be obtained. If the amount exceeds 2 parts by mass, the lubricant component may bleed on the surface of the polymer molded product or cause a decrease in physical properties.
- the above-mentioned antistatic agent is added for the purpose of reducing the chargeability of the molded product and preventing dust adhesion due to charging.
- antistatic agents such as cationic, anionic and nonionic.
- Preferred examples include polyoxyethylene alkylamines, polyoxyethylene alkylamides or their fatty acid esters, glycerin fatty acid esters, and the like. These may be used alone or in combination of two or more.
- the addition amount of the antistatic agent is preferably 0.03 to 2 parts by mass, more preferably 0.04 to 1 part by mass with respect to 100 parts by mass of the polymer. When the amount of the antistatic agent is too small, the antistatic effect is insufficient. On the other hand, if it is excessive, bleeding to the surface and physical properties of the polymer may be reduced.
- the use of the polymer obtained by the present invention is not particularly limited, and can be formed into a film or sheet by known extrusion molding, injection molding, hollow molding, blow molding or the like. Used as automobile parts, household appliances, building materials, agricultural materials, packaging materials, daily goods, toys, etc. as molded products.
- Examples 1-1 to 1-3 Preparation of solid Ti catalyst component
- Anhydrous magnesium chloride (4.76 g, 50 mmol), decane (25 ml) and 2-ethylhexyl alcohol (23.4 ml, 150 mmol) were heated at 130 ° C. for 2 hours to form a homogeneous solution, and then phthalic anhydride (1.11 g, 7.5 mmol) was added, and the reaction was further stirred at 130 ° C. for 1 hour to dissolve phthalic anhydride in the homogeneous solution.
- the homogeneous solution thus obtained was cooled to room temperature, and then charged dropwise into 200 ml (1.8 mol) of titanium tetrachloride maintained at ⁇ 20 ° C. over 1 hour.
- the temperature of the mixed solution was raised to 110 ° C. over 4 hours.
- the temperature reached 110 ° C. 2.68 ml (12.5 mmol) of diisobutyl phthalate was added, and the same temperature was then stirred for 2 hours.
- the solid part was collected by hot filtration, and the solid part was resuspended in 200 ml of titanium tetrachloride, and then heated again at 110 ° C. for 2 hours.
- the solid portion was again collected by hot filtration, and washed thoroughly with decane and hexane at 110 ° C. until no free titanium compound was detected in the washing solution to obtain a solid Ti catalyst component.
- the solid Ti catalyst component synthesized by the above production method was stored as a heptane slurry. A part of the catalyst was taken out and dried for the purpose of examining the catalyst composition.
- the composition of the solid Ti catalyst component thus obtained was 3.1% by weight of titanium, 56.0% by weight of chlorine, 17.0% by weight of magnesium and 20.9% by weight of isobutyl phthalate.
- Comparative Example 1-1 Polypropylene powder was obtained in the same manner as in Examples 1-1 to 1-3 except that no phenolic antioxidant was added during polymerization (see Table 1).
- the influence on the polymerization behavior was evaluated by the yield and molecular weight of the obtained polymer.
- Catalytic activity (g-PP / g-catalyst) represents the amount polymerized per 1 g catalyst amount.
- the molecular weight is determined by gel permeation chromatography (equipment: GPC2000, manufactured by Waters, column: 2 Styragel HT6E and 1 Styragel HT2, manufactured by Waters, measuring temperature 135 ° C., solvent: orthodichlorobenzene, concentration: 6 mg / 10 g). Average molecular weight and dispersity (Mw / Mn) were measured.
- melt flow rate (MFR) of the polymer obtained was measured by measuring the molten resin extruded under a load of 2.16 kg against the resin melted at 230 ° C. Was the melt flow rate (MFR).
- AO-1 2- (1,1-dimethylethyl) -6-methyl-4- [3-[[2,4,8,10-tetrakis (1,1-dimethylethyl) dibenzo [d, f ] [1,3,2] dioxaphosphin-6-yl] oxy] propyl] phenol 2)
- AO-2 2-methyl-4,6-bis ((octylthio) methyl) phenol 3)
- AO-3 Dioctadecyl [[3,5-bis (1,1-dimethylethyl) -4-hydroxyphenyl] methyl] phosphonate
- the phenolic antioxidant according to the present invention can be polymerized without adversely affecting the catalytic activity even when the monomer having an ethylenically unsaturated bond is added during polymerization. It could be confirmed.
- Examples 2-1 to 2-3 and Comparative Example 2-2 In the same manner as in Examples 1-1 to 1-3, the stabilizer composition shown in Table 2 or Table 3 was added during polymerization to obtain a polymer. 0.05 parts by mass of calcium stearate was added to and mixed with the obtained polymer. After mixing, the mixture was put into a twin screw extruder (Laboplast Mill Micro, manufactured by Toyo Seiki Seisakusho Co., Ltd.), extruded at a melting temperature of 230 ° C., and pelletized again into the twin screw extruder for 5 times. . In addition amount of a stabilizer composition and a calcium stearate salt is the quantity (mass part) with respect to 100 mass parts of obtained polymers.
- Comparative Example 2-1 and Comparative Examples 2-3 to 2-5 and Reference Examples 1 to 3 To the polymer not blended with the stabilizer composition obtained in Comparative Example 1-1, the stabilizer composition described in Table 3 or Table 4 and 0.05 part by mass of calcium stearate were added, Mixed. After mixing, the processing with the twin screw extruder was repeated 5 times in the same manner as in Example 2-1. In addition, the addition amount of a stabilizer composition and a calcium stearate salt is the quantity (mass part) with respect to 100 mass parts of obtained polymers.
- Phenolic antioxidants than Comparative Examples 2-2 in Table 3 is different from the phenolic antioxidant according to the production method of the present invention, it was confirmed that the stabilizing effect is poor. Further, from Comparative Examples 2-3 to 2-5 in Table 3, even if the phenolic antioxidant according to the production method of the present invention is added during granulation, the stabilizing effect is poor. It could be confirmed. On the other hand, from Examples 2-1 to 2-3 in Table 2, it was confirmed that the polymer obtained by the production method of the present invention has an excellent stabilizing effect.
- Example 2-1 and Table 4 in Table 2 Reference Example 1 in Table 2, Example 2-2 in Table 2 and Reference Example 2 in Table 4, Example 2-3 in Table 2 and Reference Example 3 in Table 4
- the method for producing a stabilized polymer of the present invention showed the same level of stabilizing effect while the addition amount of the stabilizer composition was 1/5 compared to the case of adding in the granulation step after polymerization.
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Abstract
Description
そこで、重合物の溶融混練による安定剤の配合工程を省略すべく、モノマーの重合前または重合中に安定剤を添加する方法の研究開発が進められているが、フェノール系酸化防止剤は、重合触媒の触媒活性を阻害する作用があるという問題があった。
上記担体は種類に制限ないが、例えば、無機酸化物等の無機担体、多孔質ポリオレフィンなどの有機担体があげられ、複数を併用したものであってもよい。
上記無機担体としては、例えば、シリカ、アルミナ、酸化マグネシウム、酸化ジルコニウム、酸化チタン、酸化鉄、酸化カルシウム、酸化亜鉛等、塩化マグネシウム、臭化マグネシウム等のハロゲン化マグネシウム、マグネシウムエトキシドなどのマグネシウムアルコキシドなどが挙げられる。
上記リン系酸化防止剤の使用量は、前記重合体100重量部に対して、好ましくは0.001~3重量部、より好ましくは、0.005~0.5重量部である。
上記紫外線吸収剤の使用量は、前記重合体100質量部に対して、好ましくは0.001~5質量部、より好ましくは0.005~0.5質量部である。
上記ヒンダードアミン系光安定剤の使用量は、前記重合体100質量部に対して、好ましくは0.001~5質量部、より好ましくは0.005~0.5質量部である。
上記造核剤の使用量は、前記重合体100質量部に対して、好ましくは0.001~10質量部、より好ましくは0.005~5質量部である。
上記難燃剤の使用量は、前記重合体100質量部に対して、好ましくは1~70質量部、より好ましくは、10~30質量部である。
上記、充填剤の使用量は、本発明を阻害しない範囲で適宜設定できる。
上記滑剤の添加量は、前記重合体100質量部に対し、好ましくは0.03~2質量部、より好ましくは0.04~1質量部の範囲である。0.03質量部未満では、所望の滑性が得られない場合があり、2質量部を超えると滑剤成分が重合体の成形品表面にブリードしたり、物性低下の原因となる場合がある。
(固体Ti触媒成分の調製)
無水塩化マグネシウム4.76g(50mmol)、デカン25ml及び2-エチルヘキシルアルコール23.4ml(150mmol)を130℃で2時間加熱反応を行い均一溶液とした後、この溶液中に無水フタル酸1.11g(7.5mmol)を添加し、130℃にて更に1時間撹拌反応を行い、無水フタル酸を該均一溶液に溶解させた。このようにして得られた均一溶液を室温に冷却した後、-20℃に保持された四塩化チタン200ml(1.8mol)中に1時間に渡って全量滴下装入した。装入終了後、この混合液の温度を4時間かけて110℃に昇温し、110℃に達したところでジイソブチルフタレート2.68ml(12.5mmol)を添加し、これより2時間撹拌下同温度にて保持した。2時間の反応終了後、熱時ろ過にて固体部を採取し、この固体部を200mlの四塩化チタンにて再懸濁させた後、再び110℃で2時間、加熱反応を行った。反応終了後、再び熱時ろ過にて固体部を採取し、110℃デカン及びヘキサンにて、洗液中に遊離のチタン化合物が検出されなくなるまで充分洗浄して固体Ti触媒成分を得た。以上の製造方法にて合成された固体Ti触媒成分はヘプタンスラリーとして保存するが、このうち一部を取り出し、触媒組成を調べる目的で乾燥した。この様にして得られた固体Ti触媒成分の組成は、チタン3.1重量%、塩素56.0重量%、マグネシウム17.0重量%及びイソブチルフタレート20.9重量%であった。
ヘプタン9.9ml、トリエチルアルミニウム110mg及び表1記載のフェノール系酸化防止剤330mgを混合・撹拌してフェノール系酸化防止剤をマスキングし、フェノール系酸化防止剤の濃度が33mg/mLのフェノキシド溶液を調製した。
窒素置換したオートクレーブにヘプタン600mL、トリエチルアルミニウム297mg、前記フェノキシド溶液10mL、ジシクロペンチルジメトキシシラン0.26mmol及び固体Ti触媒成分のヘプタンスラリー(Tiとして13μmol)を順次加えた。オートクレーブ内をプロピレン雰囲気に置換し、プロピレンで1kgf/cm2Gの圧力をかけ、50℃で5分間プレ重合した。プロピレンをパージした後、水素340ml(23℃)を吹き込み、70℃まで昇温し、オートクレーブ内にプロピレンで6kgf/cm2Gの圧力をかけ、70℃で1時間重合反応を行った。窒素ガスで系内を置換してから40℃でエタノール5mlを加え重合反応を停止させた後、50℃で減圧脱溶媒を行ない、次いで、真空中、40℃でポリマーを5時間乾燥することにより、ポリプロピレンパウダーを得た。
フェノール系酸化防止剤を重合時に添加しなかった(表1参照)以外には、実施例1-1~1-3と同様にしてポリプロピレンパウダーを得た。
得られた重合体の収量および分子量により、重合挙動への影響を評価した。触媒活性(g-PP/g-触媒)は、1gの触媒量に対する重合された量を表す。分子量は、ゲルパーミエーションクロマトグラフ(装置:ウォーターズ社製GPC2000型、カラム:ウォーターズ社製Styragel HT6E 2本とStyragelHT2 1本、測定温度135℃、溶媒:オルトジクロロベンゼン、濃度:6mg/10g)により重量平均分子量及び分散度(Mw/Mn)を測定した。
2)AO-2:2-メチル-4,6-ビス((オクチルチオ)メチル)フェノール
3)AO-3:ジオクタデシル[[3,5-ビス(1,1-ジメチルエチル)-4-ヒドロキシフェニル]メチル]ホスホナート
上記実施例1-1~1-3と同様にして、表2又は表3に記載の安定剤組成物を重合時に添加して重合体を得た。得られた重合体に対して、ステアリン酸カルシウム塩を0.05質量部添加し混合した。混合後、二軸押出機(ラボプラストミルマイクロ,株式会社東洋精機製作所製)に投入し、230℃の溶融温度で押出し、ペレタイズしたものをまた二軸押出機に投入することを5回繰り返した。なお、安定剤組成物、ステアリン酸カルシウム塩の添加量は、得られた重合体100質量部に対しての量(質量部)である。
上記比較例1-1で得た安定剤組成物を配合していない重合体に対して、表3又は表4に記載の安定剤組成物及びステアリン酸カルシウム塩0.05質量部を添加して、混合した。混合後、上記実施例2-1と同様に、二軸押出機による加工を5回繰り返した。なお、安定剤組成物、ステアリン酸カルシウム塩の添加量は、得られた重合体100質量部に対しての量(質量部)である。
上記の押出前の重合体と5回押出後のペレットの分子量を計測して、安定化効果について評価した。分子量は、ゲルパーミエーションクロマトグラフ(装置:ウォーターズ社製GPC2000型、カラム:ウォーターズ社製Styragel HT6E 2本とStyragelHT2 1本、測定温度135℃、溶媒:オルトジクロロベンゼン、濃度:6mg/10g)により重量平均分子量を計測した。
これらの結果について、それぞれ、下記表2~表4に示す。
これらに対し、表2の実施例2-1~2-3より、本発明の製造方法で得られた重合体は、優れた安定化効果が得られることが確認できた。
Claims (6)
- 有機アルミニウムでマスキングされた下記一般式(I)、(II)又は(III)で表されるフェノール系酸化防止剤の1種以上を、エチレン性不飽和結合を有するモノマーの重合前又は重合中に触媒系又は重合系に添加する工程を備えることを特徴とする安定化ポリマーの製造方法。
- 前記フェノール系酸化防止剤を、エチレン性不飽和結合を有するモノマーを重合して得られる重合体100質量部に対して、0.001~0.5質量部となるように添加する請求項1記載の安定化ポリマーの製造方法。
- 前記有機アルミニウム化合物が、トリアルキルアルミニウムである請求項1記載の安定化ポリマーの製造方法。
- さらにリン系酸化防止剤を、エチレン性不飽和結合を有するモノマーの重合前又は重合中に触媒系又は重合系に添加する工程を備える請求項1記載の安定化ポリマーの製造方法。
- 前記エチレン性不飽和結合を有するモノマーが、α-オレフィンである請求項1記載の安定化ポリマーの製造方法。
- 請求項1記載の安定化ポリマーの製造方法で得られることを特徴とするオレフィン重合体。
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JP2005255953A (ja) | 2004-03-15 | 2005-09-22 | Asahi Denka Kogyo Kk | 安定化されたポリマーの製造方法 |
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Also Published As
Publication number | Publication date |
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EP2910577A1 (en) | 2015-08-26 |
JP5710186B2 (ja) | 2015-04-30 |
EP2615118B1 (en) | 2016-05-04 |
EP2615118A1 (en) | 2013-07-17 |
CN103108888A (zh) | 2013-05-15 |
US20130144020A1 (en) | 2013-06-06 |
KR101792125B1 (ko) | 2017-10-31 |
CN103108888B (zh) | 2014-12-10 |
EP2615118A4 (en) | 2014-01-15 |
KR20130102585A (ko) | 2013-09-17 |
EP2796477B1 (en) | 2016-01-20 |
JP2012057101A (ja) | 2012-03-22 |
EP2796477A1 (en) | 2014-10-29 |
US9447200B2 (en) | 2016-09-20 |
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