WO2011102346A1 - Agent and method for selectively anchoring halogenated aromatic compound contained in medium - Google Patents
Agent and method for selectively anchoring halogenated aromatic compound contained in medium Download PDFInfo
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- WO2011102346A1 WO2011102346A1 PCT/JP2011/053163 JP2011053163W WO2011102346A1 WO 2011102346 A1 WO2011102346 A1 WO 2011102346A1 JP 2011053163 W JP2011053163 W JP 2011053163W WO 2011102346 A1 WO2011102346 A1 WO 2011102346A1
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- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/262—Synthetic macromolecular compounds obtained otherwise than by reactions only involving carbon to carbon unsaturated bonds, e.g. obtained by polycondensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/265—Synthetic macromolecular compounds modified or post-treated polymers
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- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0009—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
- C08B37/0012—Cyclodextrin [CD], e.g. cycle with 6 units (alpha), with 7 units (beta) and with 8 units (gamma), large-ring cyclodextrin or cycloamylose with 9 units or more; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08B—POLYSACCHARIDES; DERIVATIVES THEREOF
- C08B37/00—Preparation of polysaccharides not provided for in groups C08B1/00 - C08B35/00; Derivatives thereof
- C08B37/0006—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid
- C08B37/0009—Homoglycans, i.e. polysaccharides having a main chain consisting of one single sugar, e.g. colominic acid alpha-D-Glucans, e.g. polydextrose, alternan, glycogen; (alpha-1,4)(alpha-1,6)-D-Glucans; (alpha-1,3)(alpha-1,4)-D-Glucans, e.g. isolichenan or nigeran; (alpha-1,4)-D-Glucans; (alpha-1,3)-D-Glucans, e.g. pseudonigeran; Derivatives thereof
- C08B37/0012—Cyclodextrin [CD], e.g. cycle with 6 units (alpha), with 7 units (beta) and with 8 units (gamma), large-ring cyclodextrin or cycloamylose with 9 units or more; Derivatives thereof
- C08B37/0015—Inclusion compounds, i.e. host-guest compounds, e.g. polyrotaxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
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- C—CHEMISTRY; METALLURGY
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- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2305/00—Characterised by the use of polysaccharides or of their derivatives not provided for in groups C08J2301/00 or C08J2303/00
- C08J2305/16—Cyclodextrin; Derivatives thereof
Definitions
- the present invention can collect a halogenated aromatic compound contained in an organic medium typified by insulating oil, machine oil, heat medium, lubricating oil, plasticizer, paint and ink, and mixtures thereof.
- the present invention relates to a selective fixing agent and a method for obtaining an organic medium containing almost no halogenated aromatic compound using the selective fixing agent. More specifically, a novel structure that can be obtained by condensing cyclodextrin with an organic dibasic acid and esterifying alcohols, aryl alcohols, or phenols at the terminal of the resulting condensation polymer has a novel structure.
- the present invention relates to a method for selectively fixing a halogenated aromatic compound contained in an organic medium using a porous cyclodextrin polymer having the same. Furthermore, this invention relates to the cyclodextrin polymer which has said novel structure, and its manufacturing method.
- the polymer according to the present invention has a characteristic spherical porous shape, whereby various compounds contained in an organic medium can be selectively and efficiently fixed.
- Halogenated aromatic compounds are compounds that are highly toxic to humans, animals and plants, and many of them are designated by the Law on Waste Disposal and Cleaning as hazardous substances, especially because of the potential for teratogenicity. . When these compounds are present in soil, groundwater, incineration ash, washing water, machine oil, etc., it is strictly determined that some treatment must be applied to reduce their concentration below the reference value.
- an organic medium such as insulating oil containing a halogenated aromatic compound has been chemically treated as it is (Patent No. 2611900, Patent No. 3247505).
- PCB polychlorinated biphenyls
- reclaimed oil without a PCB it does not contain a PCB or a certificate that does not contain a PCB.
- Insulating oils new oils and reclaimed oils
- trace amounts about 0.5 to 100 ppm, especially about 0.5 to 10 ppm
- an organic medium containing a halogenated aromatic compound can be incinerated, but there are many difficult issues such as dioxin countermeasures, and there are still doubts about environmental safety.
- halogenated aromatic compound processing technology not only a medium containing a trace amount of a halogenated aromatic compound but also a technology for processing a halogenated aromatic compound itself has been established.
- a process (hereinafter referred to as “high concentration treatment”) for directly treating a high concentration medium containing an aromatic compound at a high concentration (1% or more) has started to operate (Japanese Patent Laid-Open No. 2003-112034) .
- the halogenated aromatic compound is concentrated by selectively fixing the halogenated aromatic compound contained in a trace amount, only the halogenated aromatic compound is efficiently treated by the above-described high concentration treatment.
- the medium from which the halogenated aromatic compound has been removed can be used as a non-contained medium, and the storage place of the medium before processing can be saved.
- JP-A-5-31212 discloses a method for collecting an organic halogen compound that forms an organic halogen compound inclusion complex using a modified cyclodextrin.
- the method described in JP-A-5-31212 relates to a method for collecting an organic halogen compound contained in an aqueous solution using the hydrophilic modified cyclodextrin, and the method using the modified cyclodextrin that is not lipophilic. It is difficult to apply as it is to an organic medium system.
- Japanese Patent No. 3010602 discloses various methods for synthesizing cyclodextrin polymers. However, it is disclosed that these compounds are brought into contact with an organic medium to selectively fix a halogenated aromatic compound contained therein. Not done.
- cyclodextrin is well known as a compound that can include various compounds.
- Cyclodextrins are cyclic oligosaccharides in which 6, 7, or 8 glucoses are linked in a cyclic manner and are called ⁇ -, ⁇ -, or ⁇ -cyclodextrin, respectively.
- Cyclodextrins have the property of enclosing various compounds in their cyclic vacancies. Due to this property, a hydrophobic substance can be included in cyclodextrin and dissolved in water, or used for various adsorption / separation operations.
- cyclodextrin is highly water-soluble, its use in organic solvents is limited. Various attempts have been made to make cyclodextrin water insoluble.
- JP-A-2009-95792 discloses the production of a polymer that interacts with a halogenated aromatic compound by suction by condensing a cyclodextrin and an organic dibasic acid. As described above, the polymer produced in JP-A-2009-95792 is terminated with a carboxyl group derived from phthalic dichloride.
- Patent No. 3010602 discloses that cyclodextrin and terephthalic acid are reacted to form a polymer.
- a method for producing a cyclodextrin polymer having a terminal carboxyl group derived from terephthaloyl dichloride by condensing cyclodextrin and terephthaloyl dichloride, condensing cyclodextrin and dimethyl terephthalate Discloses a method for producing a cyclodextrin polymer, which is a methyl ester derived from dimethyl terephthalate, and a method for producing a crosslinked cyclodextrin polymer by condensing cyclodextrin and various organic dibasic acids.
- the example of Japanese Patent No. 3010602 describes that the cyclodextrin polymer thus produced can be formed into a film and decomposed by a specific enzyme.
- the present invention makes it easy to decompose only a halogenated aromatic compound by selectively fixing a halogenated aromatic compound contained in an organic medium and removing or concentrating the halogenated aromatic compound from the organic medium. It is an object of the present invention to provide a selective fixing agent that can be used. Further, the present invention selectively collects a halogenated aromatic compound contained in an organic medium using such a selective fixing agent, and thus recovers an organic medium that does not contain a halogenated aromatic compound at a high recovery rate. Provide a way to get at rates.
- the inventors have selected a halogenated aromatic compound contained in an organic medium using a novel water-insoluble porous cyclodextrin polymer produced from a water-soluble cyclodextrin as a selective fixing agent. It was found that an organic medium containing no halogenated aromatic compound can be obtained at a high recovery rate.
- aspects of the present invention are as follows: 1. Porous that interacts with halogenated aromatic compounds in an attractive manner by reacting alcohols, aryl alcohols or phenols at the end of the polymer condensed with cyclodextrin and organic dibasic acid or organic dibasic acid halide Selective fixing agent for halogenated aromatic compounds contained in an organic medium, comprising a high-quality cyclodextrin polymer. 2.
- the organic dibasic acid or organic dibasic acid halide is selected from terephthalic acid, isophthalic acid, maleic acid, malic acid, malonic acid, succinic acid, fumaric acid, glutaric acid, adipic acid, phthalic acid or their halides 2.
- the alcohol is selected from an alkyl group having 1 to 10 carbon atoms
- the aryl alcohol is selected from benzyl alcohol, or benzyl alcohol substituted with an alkyl, aryl, or acyl group
- the phenol is phenol, alkyl, aryl, or aryl Or a selective sticking agent according to claim 1 or 2, selected from phenols substituted with acyl groups. 4).
- the organic medium is selected from the group consisting of an organic liquid, an insulating oil, a heat medium, a lubricating oil, a plasticizer, a paint and an ink, and a mixture thereof. 7).
- a selective fixing agent for a halogenated aromatic compound containing a cyclodextrin polymer of the above and an organic medium containing a halogenated aromatic compound are brought into contact with each other, and the halogenated aromatic compound contained in the organic medium is subjected to the halogenation.
- a method characterized in that an organic medium containing no halogenated aromatic compound is obtained by fixing to a porous cyclodextrin polymer that interacts with an aromatic compound in an aspiration manner.
- the organic dibasic acid or organic dibasic acid halide is selected from terephthalic acid, isophthalic acid, maleic acid, malic acid, malonic acid, succinic acid, fumaric acid, glutaric acid, adipic acid, phthalic acid or their halides 8.
- the method according to 7 above. 9 The alcohol is selected from alkyl groups having 1 to 10 carbon atoms, the aryl alcohol is selected from benzyl alcohol, or benzyl alcohol substituted with an alkyl, aryl, or acyl group, and the phenol is phenol, alkyl, aryl, or aryl Or the method according to 7 or 8 above, which is selected from phenol substituted with an acyl group. 10. 10.
- Method. 11 The method according to any one of 7 to 10 above, wherein the halogenated aromatic compound is dioxins, polychlorobiphenyls, or polychlorobenzenes. 12
- the organic medium is selected from the group consisting of organic liquid, insulating oil, machine oil, heat medium, lubricating oil, plasticizer, paint and ink, and mixtures thereof.
- organic dibasic acid or organic dibasic acid halide-containing organic solvent dropwise to cyclodextrin dissolved in organic solvent, and then add alcohols, aryl alcohols, or phenols for esterification reaction A process for producing a porous cyclodextrin polymer.
- the organic dibasic acid or organic dibasic acid halide is selected from terephthalic acid, isophthalic acid, maleic acid, malic acid, malonic acid, succinic acid, fumaric acid, glutaric acid, adipic acid, phthalic acid or their halides 14. The method according to 13 above. 15.
- the alcohol is selected from aliphatic alcohols having 1 to 10 carbon atoms
- the aryl alcohol is selected from benzyl alcohol or substituted benzyl alcohol
- the phenol is selected from phenol or substituted phenols.
- the organic solvent for dissolving cyclodextrin is selected from pyridine, dimethyl sulfoxide, dimethylformamide, and 1-methylimidazole
- the organic solvent for dissolving organic dibasic acid or organic dibasic acid halide is tetrahydrofuran, dichloromethane, 1, 16.
- the “halogenated aromatic compound” refers to all compounds in which an aromatic compound is substituted with one or more of fluorine, chlorine, bromine and iodine.
- PCB polychlorobiphenyls
- dioxins dioxins
- chlorofluorocarbons polychloronaphthalenes
- polychlorobenzenes polychlorobenzenes and the like are indicated.
- PCB is a general term for compounds in which several chlorine atoms are substituted on the biphenyl skeleton, and there are many isomers depending on the substitution position and the number of substitutions of chlorine atoms.
- Dioxins refer to specific compounds specified by the Special Measures for Countermeasures against Dioxins in a narrow sense, but in the present invention, all halogenated compounds suspected as so-called endocrine disrupting substances (environmental hormones) are included.
- an “organic medium” containing a halogenated aromatic compound is generally an organic solvent, and particularly an organic solvent that dissolves a halogenated aromatic compound well. From the aspect, it means an insulating oil, a machine oil, a heat medium, a lubricating oil, a plasticizer, a paint and an ink, a mixture thereof, and the like that are highly likely to contain a halogenated aromatic compound.
- the “organic medium” may be the majority of the organic medium (for example, 60% or more), and may contain water depending on the case. However, the organic medium containing the halogenated aromatic compound may be used. The property of the medium as a whole is not that of an aqueous solution but that of an organic solution.
- halogenated aromatic compounds contained in solid substances eg paper, wood, incinerated ash, rocks, soil, etc.
- Those transferred to an organic medium can also be an “organic medium containing a halogenated aromatic compound” to be treated with the selective fixing agent of the present invention.
- interacting with a halogenated aromatic compound in an attractive manner means interacting with the above-described halogenated aromatic compound in an attractive manner (that is, not repulsive).
- the compounds having such properties are collectively referred to as “compounds that interact with a halogenated aromatic compound in an attractive manner”.
- Such compounds have cyclic moieties, substituents, sequences, etc. that interact with the halogenated aromatic compounds in an attractive manner.
- the “compound that interacts with a halogenated aromatic compound in an attractive manner” is sometimes simply abbreviated as “attractive interactive compound”, “interactive compound” or “interacting compound”. May be described.
- “selectively fixing” a halogenated aromatic compound means that only a halogenated aromatic compound contained in the organic medium by dissolution, dispersion, or the like, or an organic medium containing the halogenated aromatic compound therein. Interacts with the association of molecules to take in or fix them.
- adheresion includes all chemical bonding and adhesion, and physical adsorption, suction, or just being caught, and does not necessarily mean that it is always adhered. .
- the “selective sticking agent” of the present invention means that the active ingredient contained in the selective sticking agent interacts with the halogenated aromatic compound contained in the organic medium strongly and attractively, In addition to drugs that are firmly incorporated or anchored into the molecular structure of the active ingredient, such active ingredients must be in at least temporary contact with the halogenated aromatic compound or maintained in close proximity. Means a drug that can
- the selective fixing agent of the present invention includes a composition capable of fixing these by attracting interaction with the halogenated aromatic compound.
- a composition capable of fixing these by attracting interaction with the halogenated aromatic compound.
- an active ingredient of such a composition there can be mentioned a porous cyclodextrin polymer obtained by reacting alcohols, aryl alcohols or phenols at the terminal of a polymer obtained by condensing cyclodextrin and an organic dibasic acid.
- the compound that interacts with the halogenated aromatic compound exemplified here is a compound having in its molecule a cyclic part of cyclodextrin capable of interacting with the halogenated aromatic compound in the molecular structure.
- the interactive compound can be at least dispersed in an organic medium.
- An interactively interacting moiety present in the molecule of the interacting compound i.e., the cyclic part of cyclodextrin interacts with the halogenated aromatic compound, thereby allowing the halogenated aromatic compound to interact with or near the interacting part. Secure to.
- the selective fixing agent of the present invention contains, as an active ingredient, a compound that interacts with the halogenated aromatic compound in an aspirate manner, and may contain auxiliary agents such as a carrier, a substrate, and a diluent as necessary. .
- the compound that interacts with the halogenated aromatic compound, which is the active ingredient, in an attractive manner may be immobilized on a carrier or a substrate as the case may be.
- compounds that interact with halogenated aromatic compounds in aspiration on solid supports such as silica gel, polymer beads, ion exchange resins, glass, filters, membranes, various network or lattice structures, foams, porous materials, etc. Can be immobilized.
- Immobilization of a compound that interacts with a halogenated aromatic compound to a carrier or a substrate can be carried out by using a relatively strong chemical bond represented by, for example, covalent bond or ionic bond, as well as hydrophobic interaction, van der It can also be performed by physical interaction with a relatively weak force such as a Waals force.
- a relatively strong chemical bond represented by, for example, covalent bond or ionic bond, as well as hydrophobic interaction, van der It can also be performed by physical interaction with a relatively weak force such as a Waals force.
- Examples of the compound that interacts with the halogenated aromatic compound in an attractive manner include a polymer obtained by reacting an alcohol, an aryl alcohol, or a phenol with a terminal of a polymer obtained by condensing a cyclodextrin and an organic dibasic acid.
- Cyclodextrins are cyclic oligosaccharides in which 6, 7 or 8 glucoses are cyclically linked, and are called ⁇ -, ⁇ - or ⁇ -cyclodextrin, respectively.
- Organic dibasic acids include, for example, aliphatic dicarboxylic acids, aromatic dicarboxylic acids, alicyclic dicarboxylic acids, and fatty acids, and in the present invention, they react with the —CH 2 OH group in the cyclodextrin molecule to sequentially condense. It is a compound that can form a polymer.
- organic dibasic acids include terephthalic acid, isophthalic acid, glutaric acid, adipic acid, maleic acid, fumaric acid, and phthalic acid.
- the organic dibasic acid halide refers to an acid halide of the above organic dibasic acid.
- terephthalic acid which is an organic dibasic acid or terephthalic acid dichloride (terephthaloyl dichloride) which is an organic dibasic acid halide.
- Reacting alcohols, aryl alcohols or phenols at the polymer end means end-capping the carboxyl group derived from the organic dibasic acid remaining at the end of the condensation polymer with a specific substituent.
- carboxyl group derived from the organic dibasic acid remaining at the end of the condensation polymer with a specific substituent.
- alcohols, aryl alcohols or phenols can be reacted and esterified.
- the terminal is reacted with alcohols, aryl alcohols or phenols, for example, alcohols selected from alcohols having 1 to 10 carbon atoms, aryl alcohols selected from benzyl alcohol or substituted benzyl alcohols, Or it means reacting phenols selected from phenol or substituted phenols with carboxyl end groups to alkyl esters, aryl esters or phenyl esters.
- alcohols selected from alcohols having 1 to 10 carbon atoms
- aryl alcohols selected from benzyl alcohol or substituted benzyl alcohols or reacting phenols selected from phenol or substituted phenols with carboxyl end groups to alkyl esters, aryl esters or phenyl esters.
- the end group is methyl ester (—COOMe)
- —COOEt ethyl ester
- benzyl alcohol benzyl ester
- the porous cyclodextrin polymer of the present invention may be a composition in which polymers having different molecular weights are mixed.
- the chemical structural formula of the cyclodextrin polymer used in the present invention can be represented, for example, by the following formula:
- the cyclodextrin part is represented by a truncated cone, and terephthalic acid is used as the organic dibasic acid. Hydroxyl groups and organic dibasic acids in cyclodextrin are alternately bonded by ester bonds to form a network structure. The polymer ends are capped with methyl groups as a result of reaction with methanol.
- One acid chloride group (—COCl) of terephthaloyl dichloride reacts with the —CH 2 OH group of ⁇ -cyclodextrin to form an ester bond.
- the other acid chloride group then reacts with the —CH 2 OH group of another ⁇ -cyclodextrin. This is repeated to obtain a condensation polymer.
- the substituent involved in the condensation is a moiety of —CH 2 OH, and such groups are 6 for ⁇ -cyclodextrin and 7 for ⁇ -cyclodextrin. In the case of ⁇ -cyclodextrin, there are 8 molecules in the molecule.
- the obtained condensate may have a crosslinked structure or a three-dimensional network structure in addition to the one in which cyclodextrin and organic dibasic acid are alternately condensed.
- the terminal acid chloride group becomes —COOCH 3 .
- a polymer having a spherical porous shape that is finally obtained as a selective fixing agent of the present invention is obtained.
- Stirring is performed using a magnetic stirrer or a stirrer bar.
- a stirrer equipped with a stirring blade can be used to stir evenly so that there is no difference in the stirring speed between the upper part and the lower part of the reaction solution. It is convenient to use a stirrer. For example, as shown in FIG. 4, when using Max Blend with four blades attached at the top, the top and bottom in the reactor can be stirred uniformly.
- the stirring blade can increase the stirring efficiency
- various shapes of the stirring blade can be used.
- the porous shape generally means a shape in which small pores are opened in the polymer.
- the spherical porous shape means that sphere-shaped minute lumps are aggregated to form a shape having small pores as a whole.
- FIG. 1 an electron micrograph of the spherical porous cyclodextrin polymer produced in Synthesis Example 1 (end-capped with a methyl group on a condensation polymer of ⁇ -cyclodextrin and terephthaloyl dichloride) used in the present invention is shown in FIG. To According to FIG. 1, it can be seen that the polymer used in the present invention has a porous shape in which fine spherical crystals are aggregated.
- a chemical method such as acid / alkali treatment or a foaming method during production is well known.
- the polymer used as the selective fixing agent of the present invention can have a special shape by stirring during condensation.
- FIG. 2 shows an electron micrograph of the condensation polymer of ⁇ -cyclodextrin and terephthaloyl dichloride produced in Comparative Synthesis Example 1 (a polymer whose terminal is not end-capped with alcohol or the like). It can be seen that the polymer of FIG. 2 also has a porous shape, but the spherical crystal spheres are incomplete. The polymer in FIG. 2 is shaped like a fusion of spheres, and can be said to have a smaller surface area than the polymer in FIG. Further, an electron micrograph of the polymer synthesized in Comparative Synthesis Example 2 is shown in FIG. It is surprising that a slight difference in the microstructure of the polymer shows a difference in the performance of the halogenated aromatic compound contained in the organic medium as a selective fixing agent.
- FIG. 1 is an electron micrograph of a porous cyclodextrin polymer (terephthalic acid ⁇ -CD-methyl polymer) of the present invention.
- FIG. 2 is an electron micrograph of a condensation polymer (Comparative Synthesis Example 1) produced by a method according to JP-A-2009-95792.
- FIG. 3 is an electron micrograph of a polymer produced by the method according to Japanese Patent No. 3010602 (Comparative Synthesis Example 2).
- FIG. 4 is a schematic view of an example of a stirring blade used in the method of the present invention.
- FIG. 4a is a side view of a stirring blade that can be used in the method of the present invention.
- FIG. 4b is a top view of a stirring blade that can be used in the method of the present invention.
- a cyclodextrin polymer obtained by condensing a cyclodextrin and an organic dibasic acid and reacting an alcohol, an aryl alcohol or a phenol with a terminal is exemplified by the following method: Can be manufactured with: ⁇ -cyclodextrin is dissolved in an organic solvent (for example, pyridine, dimethyl sulfoxide, dimethylformamide, etc., preferably dry pyridine).
- an organic solvent for example, pyridine, dimethyl sulfoxide, dimethylformamide, etc., preferably dry pyridine.
- terephthaloyl dichloride is dissolved in an organic solvent (for example, tetrahydrofuran, dichloromethane, 1,4-dioxane, etc., preferably dry tetrahydrofuran) and added dropwise to the previously prepared ⁇ -cyclodextrin solution.
- an organic solvent for example, tetrahydrofuran, dichloromethane, 1,4-dioxane, etc., preferably dry tetrahydrofuran
- the reactor is then placed in a 50-70 ° C. water bath and the reaction mixture is stirred vigorously.
- the temperature in the reaction vessel is slightly lowered (approximately 5 to 10 ° C.), alcohols (alcohols having 1 to 10 carbon atoms such as methanol, ethanol, propanol, butanol, octanol), aryl alcohols (benzyl alcohol or Benzyl alcohol substituted with alkyl, aryl or acyl groups) or phenols (phenols substituted with phenol, alkyl, aryl or acyl groups) are added and stirring is continued.
- the obtained crystals are washed with a washing liquid such as alcohols, water, and acetone, and dried.
- ⁇ -cyclodextrin and terephthalic acid are condensed to form cyclohexane in which alcohols, aryl alcohols, or phenols are reacted at the terminal.
- a dextrin polymer can be obtained.
- ⁇ -cyclodextrin ⁇ - and ⁇ -cyclodextrin can form similar condensation polymers.
- the polymers thus obtained are referred to as “terephthalic acid- ⁇ -CD-methyl polymer” (when the terminal is treated with methanol), “terephthalic acid- ⁇ -CD-ethyl polymer” (terminal is ethanol).
- ⁇ -CD ⁇ -cyclodextrin
- terephthalic acid- ⁇ -CD terephthalic acid- ⁇ -CD
- TPGCDM polymer a polymer obtained by condensing a commercially available ⁇ -cyclodextrin (hereinafter referred to as “ ⁇ -CD”) and terephthaloyl dichloride with a methyl group
- TPGCDM polymer a specific synthesis method of “methyl polymer” or “TPGCDM polymer”.
- ⁇ -CD is dissolved in an organic solvent (for example, pyridine, dimethyl sulfoxide, dimethylformamide, 1-methylimidazole, etc.).
- concentration of ⁇ -CD in the organic solvent is preferably 5 to 20% by weight.
- terephthaloyl dichloride prepared ⁇ -CD in an organic solvent (eg, tetrahydrofuran, dichloromethane, 1,4-dioxane, xylene, dimethylformamide, toluene, etc.) at a concentration of 10 to 40 wt. It is dissolved in% and added dropwise to the previously prepared ⁇ -CD solution and stirred vigorously. Stirring is performed using a magnetic stirrer or a stirrer bar. Especially, a stirrer equipped with a stirring blade can be used to stir evenly so that there is no difference in the stirring speed between the upper part and the lower part of the reaction solution. It is convenient to use a stirrer.
- an organic solvent eg, tetrahydrofuran, dichloromethane, 1,4-dioxane, xylene, dimethylformamide, toluene, etc.
- the top and bottom in the reactor can be stirred uniformly.
- various shapes of the stirring blade can be used.
- the ⁇ -CD solution is preferably dropped while being cooled in an ice bath or the like.
- the temperature in the reaction vessel is maintained in the range of about 0-20 ° C. After the dropwise addition, the temperature in the reaction vessel is raised to a range of about 40 to 70 ° C. and stirred.
- the temperature in the reaction vessel is slightly lowered to about 60 to 65 ° C., and then an alcohol (preferably an aliphatic having 1 to 10 carbon atoms) in an amount of 30 to 80% by weight with respect to ⁇ -CD.
- Alcohols preferably an aliphatic having 1 to 10 carbon atoms
- aryl alcohols preferably benzyl alcohol or substituted benzyl alcohol
- phenols preferably phenol or substituted phenols
- the precipitated crystals are collected by filtration, washed with water and acetone, and the cyclodextrin polymer of the present invention (terephthalic acid- ⁇ -CD-methyl). Polymer) can be obtained.
- the obtained polymer can be identified by infrared absorption, and the morphology can be observed with an electron microscope.
- the cyclodextrin polymer of the present invention Comparing the cyclodextrin polymer of the present invention with the cyclodextrin polymer prepared by the conventional method and the conventional condensation polymer without end caps, the cyclodextrin polymer of the present invention has a form in which fine spherical crystals are assembled. You can see that The cyclodextrin polymer of the present invention has a more complete spherical shape, and no collapse or distortion is observed. The cyclodextrin polymer of the present invention has a larger surface area than conventional polymers and can be brought into contact with more organic liquid.
- the compound that interacts with the halogenated aromatic compound obtained by such a method in an attractive manner can be used as it is as a selective fixing agent, and it is selectively fixed with various additives or auxiliaries added as necessary. It can be set as an agent composition.
- the cyclodextrin polymer of the present invention is used for the separation of a compound contained in an organic liquid, the cyclodextrin polymer is packed in, for example, a column and the desired liquid can be simply passed through the organic liquid. Compounds can be separated.
- the organic medium containing the halogenated aromatic compound used in the present invention contains at least one halogenated aromatic compound described above.
- the halogenated aromatic compound may be dissolved at any concentration in the organic medium.
- trace amount particularly when the content of the halogenated aromatic compound is about 0.5 to 1%, “trace amount”, “trace amount” or “low concentration” It is said to contain.
- an organic medium containing a low concentration of a halogenated aromatic compound has a very small volume of the halogenated aromatic compound to be treated, but the volume of the organic medium itself becomes very large, thus making storage difficult. Chemical treatment takes a lot of time.
- halogenated aromatic compound dissolved in an extremely small amount can be concentrated and separated from an organic medium and separated into a halogenated aromatic compound to be treated and a reusable organic medium, the halogenated aromatic compound While the processing efficiency of the compound increases, the problem of storage of such organic media can also be solved.
- Organic media that are particularly likely to contain a halogenated aromatic compound include various organic liquids, insulating oils, machine oils, heat media, lubricating oils, plasticizers, paints, inks, and mixtures thereof.
- An organic medium containing a halogenated aromatic compound is placed in a reaction vessel. You may use the storage container which stores these organic media as a reaction container as it is.
- the present invention includes a compound that interacts with a halogenated aromatic compound in an attractive manner 10 times to 50 times, preferably 50 to 200 times (molar basis) with respect to the contained halogenated aromatic compound. Add the selective fixing agent and stir well.
- a compound that interacts with the halogenated aromatic compound, which is an active component in the selective fixing agent of the present invention, or a composition containing such a compound is dispersed in an organic medium and halogenated in the organic medium.
- the halogenated aromatic compound is fixed to or near the attractive interaction portion by the interaction with the attractive interaction portion in the compound that interacts with the halogenated aromatic compound.
- the contact can be generally made by a method such as stirring for 5 hours to several days.
- the fixing reaction can be suitably performed at room temperature, and can be heated as necessary.
- the attractive interaction compound to which the halogenated aromatic compound is fixed Only (or the composition containing the compound) is isolated.
- Separation may be performed using an existing solid-liquid separation technique, for example, a method using a centrifugal separator or a pressure filter.
- the filter for separation can be performed using a commercially available filter, glass filter, membrane, absorbent cotton, metal, resin or the like. Any filter or membrane may be used as long as it has a pore size capable of separating the inclusion compounds contained in the selective fixing agent of the present invention, but in consideration of the particle size of a general interaction compound. It is preferable to use one having a pore diameter of about 0.1-100 ⁇ m.
- the aspiration interaction compound to which the halogenated aromatic compound obtained by separation is fixed is separated from the halogenated aromatic compound, which is fixed, if necessary, and the halogenated aromatic compound to which the suction interaction compound is fixed or After the halogenated aromatic compound obtained by the desorption operation is diluted as necessary, it can be decomposed by a chemical processing method such as a chemical extraction decomposition method.
- the active component a compound that interacts with the halogenated aromatic compound in a suction manner, for example, silica gel, polymer beads, ion exchange resin, foam, film, membrane, various lattice-like structures and Those immobilized on a carrier such as a net-like structure or a porous material can be preferably used.
- a solid carrier such as silica gel, polymer beads, or ion exchange resin, on which the attractive interaction compound of the present invention is supported, is laminated in a column, and an organic medium containing a halogenated aromatic compound is placed under normal pressure or By flowing under pressure and interacting with the attractive interaction compound, it becomes possible to effectively remove the halogenated aromatic compound contained in the organic medium.
- the organic medium containing a halogenated aromatic compound is filtered into the organic medium at normal pressure or reduced pressure using a solid carrier such as a filter or membrane that supports the suction interaction compound of the present invention. It becomes possible to remove the halogenated aromatic compound by fixing the contained halogenated aromatic compound to the membrane or filter.
- a solid carrier such as a foam, a net-like structure, a lattice-like structure, or a porous material that is loaded with the attractive interaction compound of the present invention is put into an organic medium containing a halogenated aromatic compound.
- the organic carrier is absorbed in the net-like portion, lattice-like portion or pore portion of the solid support, the contained halogenated aromatic compound is fixed, and then the solid support is pressurized (for example, squeezed, if necessary) Etc.) to obtain an organic medium from which the halogenated aromatic compound has been removed.
- composition in which a compound that interacts with the halogenated aromatic compound of the present invention in an attractive manner is immobilized on a solid support is obtained by batch treatment from an organic medium containing a halogenated aromatic compound.
- a method for removing a compound it is also very suitably used in a method for continuous treatment.
- a porous polymer itself which is an active component, which interacts with a halogenated aromatic compound in a suction manner, is packed in a column or the like, and an organic medium containing the halogenated aromatic compound is subjected to normal pressure. It is also possible to remove the halogenated aromatic compound from the organic medium by flowing under pressure.
- the selective fixing agent of the present invention can selectively fix the halogenated aromatic compound contained in the organic medium and remove it from the organic medium.
- the selective fixing agent of the present invention only a halogenated aromatic compound that requires strict decomposition treatment is required from an organic medium that must be stored because a trace amount of the halogenated aromatic compound is dissolved. Can be removed and concentrated, so that the decomposition efficiency of halogenated aromatic compounds is dramatically increased, while the safe organic medium recovered efficiently can be processed or reused in the usual way It becomes.
- the method for removing the halogenated aromatic compound contained in the organic medium using the selective fixing agent of the present invention is the method of introducing and dispersing the selective fixing agent in the organic medium, and stirring the halogenated aromatic compound by stirring or the like.
- the selective fixing agent of the present invention when a substance in which a compound that interacts with a halogenated aromatic compound is fixed to various solid carriers is used, the halogenated aromatic compound contained in the organic medium is continuously added. It can be removed.
- terephthaloyl dichloride (78.3 g, 0.39 mol, Tokyo Chemical Industry) dissolved in special grade tetrahydrofuran (220 mL, Wako Pure Chemical Industries) was added dropwise over 1 hour. After dropping, the ice bath was removed, and the mixture was stirred for 3 hours at an internal temperature of 70 ° C. with a hot water bath (70 ° C.). After completion of the reaction, the internal temperature was lowered to 65 ° C., primary methanol (100 ml, Pure Chemical Industries) was added, and the mixture was stirred for 2 hours.
- TPGCDM terephthalic acid- ⁇ -CD-methyl polymer
- Example 1 2,2 ', 3,3', 5,5'-hexachlorobiphenyl (hereinafter referred to as "2,2'3,3'5,5'-HECBP") using TPGCDM polymer.
- Selective fixing A stainless steel column (4mm ID x 10mm length) packed with TPGCDM polymer (240mg) is installed in an oven with temperature control, and 2,2 ', 3,3', 5,5'-HECBP in the column
- the contained insulating oil (concentration: 100 ppm, total weight: 400 mg, high-pressure insulating oil from Taniguchi Oil Refinery Co., Ltd.) was poured in with nitrogen gas and poured at 130 ° C. to obtain 349 mg of insulating oil.
- PCB polychlorinated biphenyl
- TPBCDE terephthalic acid- ⁇ -CD-ethyl polymer
- primary ethanol Pure Chemical
- TPBCDP terephthalic acid- ⁇ -CD-propyl polymer
- terephthalic acid- ⁇ -CD-benzyl polymer (hereinafter referred to as “TPBCDB”) was synthesized using special grade 2-benzyl alcohol (Pure Chemical) (Synthesis Example 5).
- TPBCDO terephthalic acid- ⁇ -CD-octyl polymer
- TPBCDO terephthalic acid- ⁇ -CD-octyl polymer
- Example 3 Selective fixation of 2,2'3,3'5,5'-HECBP with TPBCDM polymer Stainless steel column (inner diameter 4 mm) packed with TPBCDM polymer (350 mg) obtained in Synthesis Example 2 above ⁇ 10 mm in length) installed in an oven with temperature control, and 2,2 ', 3,3', 5,5'-HECBP-containing insulating oil (concentration: 100 ppm, total weight: 350 mg) in the column
- the insulating oil was Taniguchi Petroleum Refining Co., Ltd., high-pressure insulating oil) which was poured with nitrogen gas and poured out at 130 ° C. to obtain 269 mg of insulating oil.
- Example 8 Selective fixing of PCB with TPBCDM polymer A stainless steel column (inner diameter 8 mm x length 300 mm) packed with the TPBCDM polymer (2.0 g) obtained in Synthesis Example 2 was mounted in an oven with temperature control. The actual liquid (PCB concentration: 26.5 ppm, total weight: 2.0 g) used in Example 2 was poured into the column with nitrogen gas and poured out at 130 ° C. to obtain 962 mg of insulating oil. When the PCB concentration of the insulating oil was measured by gas chromatography, it did not contain PCB. The results are listed in Table 2.
- terephthalic acid- ⁇ -CD polymer Synthesis of condensation polymer of ⁇ -CD and terephthalic acid (hereinafter referred to as “terephthalic acid- ⁇ -CD polymer”) As a comparative example, the terminal is not treated with alcohols or the like.
- Terephthalic acid ⁇ -CD was synthesized according to the method described in Synthesis Example 1 of JP-A-2009-95792.
- TPGCD terephthalic acid- ⁇ -CD polymer
- the TPGCD polymer (the porous cyclodextrin polymer reacted with methanol at the end according to the present invention) has better adsorption performance than the TPGCD polymer (the polymer not reacted with methanol at the end). I found it.
- Comparative Synthesis Example 2 A stainless steel column (inner diameter 4 mm x length 10 mm) packed with polymer (350 mg) was installed in a temperature-controlled oven, and 2,2 ', 3,3', 5,5 Insulating oil (100 ppm, 350 mg) containing '-hexachlorobiphenyl (2,2', 3,3 ', 5,5'-HECBP) was poured with nitrogen gas and poured out at 130 ° C to give 298 mg of insulating oil was gotten. The 2,2 ', 3,3', 5,5'-HECBP concentration of the insulating oil was measured by gas chromatography, and the 2,2 ', 3,3', 5,5'-HECBP concentration was 96.1 ppm. Met. That is, it was found that the polymer synthesized in Comparative Synthesis Example 2 cannot effectively adsorb the halogenated aromatic compound.
- Comparative Synthesis Example 2 A stainless steel column (inner diameter 8 mm x length 300 mm) packed with polymer (2.0 g) was mounted in an oven with temperature control, and the actual liquid (26.5 ppm, 2.0 g) was placed in the column with nitrogen gas. After pouring and pouring at 130 ° C., 0.96 g of insulating oil was obtained. When the PCB concentration of the insulating oil was measured by gas chromatography, the PCB concentration was 26.2 ppm. That is, it was found that the polymer synthesized in Comparative Synthesis Example 2 cannot effectively adsorb PCB in the actual liquid.
- insulating oil heat medium, lubricating oil, plasticizer, paint, ink, etc. that may contain halogenated aromatic compounds as toxic substances such as dioxins and polychlorobiphenyls that cannot be easily released to the environment.
- halogenated aromatic compounds as toxic substances such as dioxins and polychlorobiphenyls that cannot be easily released to the environment.
- the simultaneous disassembling process and saving of the storage space for such a medium can be realized at the same time.
Abstract
Description
1.シクロデキストリンと有機二塩基酸または有機二塩基酸ハロゲン化物とを縮合させたポリマーの末端にアルコール類、アリールアルコール類またはフェノール類を反応させた、ハロゲン化芳香族化合物と吸引的に相互作用する多孔質のシクロデキストリンポリマーを含有する、有機媒体に含有されるハロゲン化芳香族化合物の選択固着剤。
2.有機二塩基酸または有機二塩基酸ハロゲン化物が、テレフタル酸、イソフタル酸、マレイン酸、リンゴ酸、マロン酸、コハク酸、フマル酸、グルタル酸、アジピン酸、フタル酸またはこれらのハロゲン化物から選択される、上記1に記載の選択固着剤。
3.アルコール類が炭素数1~10のアルキル基から選択され、アリールアルコール類がベンジルアルコール、またはアルキル、アリール、またはアシル基で置換されたベンジルアルコール類から選択され、フェノール類がフェノール、またはアルキル、アリール、またはアシル基で置換されたフェノールから選択される、請求項1または2に記載の選択固着剤。
4.ハロゲン化芳香族化合物と吸引的に相互作用する多孔質のシクロデキストリンポリマーが、固体担体に固定化されている、上記1~3のいずれかに記載の選択固着剤。
5.ハロゲン化芳香族化合物が、ダイオキシン類、ポリクロロビフェニル類、またはポリクロロベンゼン類である、上記1~4のいずれかに記載の選択固着剤。
6.有機媒体が、有機液体、絶縁油、熱媒体、潤滑油、可塑剤、塗料及びインキ及びこれらの混合物からなる群から選択される、上記1~5のいずれかに記載の選択固着剤。
7.シクロデキストリンと有機二塩基酸または有機二塩基酸ハロゲン化物とを縮合したポリマーの末端にアルコール類、アリールアルコール類またはフェノール類を反応させた、ハロゲン化芳香族化合物と吸引的に相互作用する多孔質のシクロデキストリンポリマーを含有する、ハロゲン化芳香族化合物の選択固着剤と、ハロゲン化芳香族化合物を含有する有機媒体とを接触させ、該有機媒体に含有されたハロゲン化芳香族化合物を該ハロゲン化芳香族化合物と吸引的に相互作用する多孔質のシクロデキストリンポリマーに固着させて、ハロゲン化芳香族化合物を含有しない有機媒体を得ることを特徴とする、方法。
8.有機二塩基酸または有機二塩基酸ハロゲン化物が、テレフタル酸、イソフタル酸、マレイン酸、リンゴ酸、マロン酸、コハク酸、フマル酸、グルタル酸、アジピン酸、フタル酸またはこれらのハロゲン化物から選択される、上記7に記載の方法。
9.アルコール類が炭素数1~10のアルキル基から選択され、アリールアルコール類がベンジルアルコール、またはアルキル、アリール、またはアシル基で置換されたベンジルアルコール類から選択され、フェノール類がフェノール、またはアルキル、アリール、またはアシル基で置換されたフェノールから選択される、上記7または8に記載の方法。
10.ハロゲン化芳香族化合物と吸引的に相互作用する多孔質のシクロデキストリンポリマーが、固体担体に固定化されていることを特徴とする選択固着剤を使用する、上記7~9のいずれかに記載の方法。
11.ハロゲン化芳香族化合物が、ダイオキシン類、ポリクロロビフェニル類、またはポリクロロベンゼン類である、上記7~10のいずれかに記載の方法。
12.有機媒体が、有機液体、絶縁油、機械油、熱媒体、潤滑油、可塑剤、塗料及びインキ及びこれらの混合物からなる群から選択される、上記7~11のいずれかに記載の方法。
13.有機溶媒中に溶解したシクロデキストリンに、有機二塩基酸または有機二塩基酸ハロゲン化物含有有機溶媒を滴下して撹拌し、次いでアルコール類、アリールアルコール類、またはフェノール類を添加してエステル化反応させることを含む、多孔質のシクロデキストリンポリマーの製造方法。
14.有機二塩基酸または有機二塩基酸ハロゲン化物が、テレフタル酸、イソフタル酸、マレイン酸、リンゴ酸、マロン酸、コハク酸、フマル酸、グルタル酸、アジピン酸、フタル酸またはこれらのハロゲン化物から選択される、上記13に記載の方法。
15.アルコール類が、炭素数1~10を有する脂肪族アルコール類から選択され、アリールアルコール類がベンジルアルコールまたは置換ベンジルアルコールから選択され、フェノール類がフェノールまたは置換フェノール類から選択される、上記13または14に記載の方法。
16.シクロデキストリンを溶解させる有機溶媒が、ピリジン、ジメチルスルホキシド、ジメチルホルムアミド、および1-メチルイミダゾールから選択され、有機二塩基酸または有機二塩基酸ハロゲン化物を溶解させる有機溶媒が、テトラヒドロフラン、ジクロロメタン、1,4-ジオキサン、キシレン、ジメチルホルムアミドおよびトルエンから選択される、上記13~15のいずれかに記載の方法。 Aspects of the present invention are as follows:
1. Porous that interacts with halogenated aromatic compounds in an attractive manner by reacting alcohols, aryl alcohols or phenols at the end of the polymer condensed with cyclodextrin and organic dibasic acid or organic dibasic acid halide Selective fixing agent for halogenated aromatic compounds contained in an organic medium, comprising a high-quality cyclodextrin polymer.
2. The organic dibasic acid or organic dibasic acid halide is selected from terephthalic acid, isophthalic acid, maleic acid, malic acid, malonic acid, succinic acid, fumaric acid, glutaric acid, adipic acid, phthalic acid or their halides 2. The selective fixing agent according to 1 above.
3. The alcohol is selected from an alkyl group having 1 to 10 carbon atoms, the aryl alcohol is selected from benzyl alcohol, or benzyl alcohol substituted with an alkyl, aryl, or acyl group, and the phenol is phenol, alkyl, aryl, or aryl Or a selective sticking agent according to claim 1 or 2, selected from phenols substituted with acyl groups.
4). 4. The selective fixing agent according to any one of 1 to 3 above, wherein a porous cyclodextrin polymer that interacts with a halogenated aromatic compound in an aspiration manner is immobilized on a solid support.
5. 5. The selective fixing agent according to any one of 1 to 4 above, wherein the halogenated aromatic compound is dioxins, polychlorobiphenyls, or polychlorobenzenes.
6). 6. The selective fixing agent according to any one of the above 1 to 5, wherein the organic medium is selected from the group consisting of an organic liquid, an insulating oil, a heat medium, a lubricating oil, a plasticizer, a paint and an ink, and a mixture thereof.
7). Porous that interacts with halogenated aromatic compounds in an attractive manner by reacting alcohols, aryl alcohols or phenols at the end of a polymer obtained by condensing cyclodextrin with organic dibasic acid or organic dibasic acid halide A selective fixing agent for a halogenated aromatic compound containing a cyclodextrin polymer of the above and an organic medium containing a halogenated aromatic compound are brought into contact with each other, and the halogenated aromatic compound contained in the organic medium is subjected to the halogenation. A method characterized in that an organic medium containing no halogenated aromatic compound is obtained by fixing to a porous cyclodextrin polymer that interacts with an aromatic compound in an aspiration manner.
8). The organic dibasic acid or organic dibasic acid halide is selected from terephthalic acid, isophthalic acid, maleic acid, malic acid, malonic acid, succinic acid, fumaric acid, glutaric acid, adipic acid, phthalic acid or their halides 8. The method according to 7 above.
9. The alcohol is selected from alkyl groups having 1 to 10 carbon atoms, the aryl alcohol is selected from benzyl alcohol, or benzyl alcohol substituted with an alkyl, aryl, or acyl group, and the phenol is phenol, alkyl, aryl, or aryl Or the method according to 7 or 8 above, which is selected from phenol substituted with an acyl group.
10. 10. The selective fixing agent according to any one of the above 7 to 9, wherein a selective fixing agent is used, wherein the porous cyclodextrin polymer that interacts with the halogenated aromatic compound in a suction manner is immobilized on a solid support. Method.
11. 11. The method according to any one of 7 to 10 above, wherein the halogenated aromatic compound is dioxins, polychlorobiphenyls, or polychlorobenzenes.
12 12. The method according to any one of 7 to 11 above, wherein the organic medium is selected from the group consisting of organic liquid, insulating oil, machine oil, heat medium, lubricating oil, plasticizer, paint and ink, and mixtures thereof.
13. Add organic dibasic acid or organic dibasic acid halide-containing organic solvent dropwise to cyclodextrin dissolved in organic solvent, and then add alcohols, aryl alcohols, or phenols for esterification reaction A process for producing a porous cyclodextrin polymer.
14 The organic dibasic acid or organic dibasic acid halide is selected from terephthalic acid, isophthalic acid, maleic acid, malic acid, malonic acid, succinic acid, fumaric acid, glutaric acid, adipic acid, phthalic acid or their halides 14. The method according to 13 above.
15. 13 or 14 above, wherein the alcohol is selected from aliphatic alcohols having 1 to 10 carbon atoms, the aryl alcohol is selected from benzyl alcohol or substituted benzyl alcohol, and the phenol is selected from phenol or substituted phenols. The method described in 1.
16. The organic solvent for dissolving cyclodextrin is selected from pyridine, dimethyl sulfoxide, dimethylformamide, and 1-methylimidazole, and the organic solvent for dissolving organic dibasic acid or organic dibasic acid halide is tetrahydrofuran, dichloromethane, 1, 16. The method according to any one of the above 13 to 15, which is selected from 4-dioxane, xylene, dimethylformamide and toluene.
本発明で用いるシクロデキストリンポリマーの化学構造式は、例えば以下の式で表すことができる: Here, if a plurality of cyclodextrins and organic dibasic acids are sequentially condensed and this end is treated with alcohols, aryl alcohols or phenols, for example, cyclodextrin and organic dibasic acids in total. Even so-called compounds generally called “oligomers” condensed by several to 10 are collectively referred to as “polymers” in the present specification. The porous cyclodextrin polymer of the present invention may be a composition in which polymers having different molecular weights are mixed.
The chemical structural formula of the cyclodextrin polymer used in the present invention can be represented, for example, by the following formula:
γ-シクロデキストリンを有機溶媒(例えばピリジン、ジメチルスルホキシド、ジメチルホルムアミド等。好ましくは乾燥ピリジン)に溶解させる。一方、二塩化テレフタロイルを有機溶媒(例えばテトラヒドロフラン、ジクロロメタン、1,4-ジオキサン等。好ましくは乾燥テトラヒドロフラン)に溶解させ、これを先に用意したγ-シクロデキストリン溶液に滴下する。この際、縮合反応による熱が発生するので、γ-シクロデキストリン溶液を氷浴などで冷却しながら滴下することが望ましい。その後50~70℃の湯浴に反応器をつけて、反応液を激しく撹拌する。反応終了後、反応容器内温を若干(およそ5~10℃)下げ、アルコール類(メタノール、エタノール、プロパノール、ブタノール、オクタノール等の炭素数1~10のアルコール類)、アリールアルコール類(ベンジルアルコールまたはアルキル、アリール、またはアシル基で置換されたベンジルアルコール)またはフェノール類(フェノール、アルキル、アリールまたはアシル基で置換されたフェノール類)を加え、さらに撹拌を続ける。得られた結晶をアルコール類、水、アセトンなどの洗浄液体で洗浄し、乾燥すると、γ-シクロデキストリンとテレフタル酸とを縮合させ、末端にアルコール類、アリールアルコール類またはフェノール類を反応させたシクロデキストリンポリマーを得ることができる。γ-シクロデキストリンの他、α-及びβ-シクロデキストリンでも同様の縮合ポリマーを形成することができる。本明細書では、このように得たポリマーを「テレフタル酸-γ-CD-メチル高分子」(末端をメタノールで処理した場合)、「テレフタル酸-γ-CD-エチル高分子」(末端をエタノールで処理した場合)、「テレフタル酸-γ-CD-ベンジル高分子」(末端をベンジルアルコールで処理した場合)、「テレフタル酸-γ-CD-フェニル高分子」(末端をフェノールで処理した場合)等と略称することがあるが、いずれも本願発明で使用する、ハロゲン化芳香族化合物と吸引的に相互作用する化合物である、多孔質のシクロデキストリンポリマーのことである。 As an active ingredient of the selective fixing agent of the present invention, a cyclodextrin polymer obtained by condensing a cyclodextrin and an organic dibasic acid and reacting an alcohol, an aryl alcohol or a phenol with a terminal is exemplified by the following method: Can be manufactured with:
γ-cyclodextrin is dissolved in an organic solvent (for example, pyridine, dimethyl sulfoxide, dimethylformamide, etc., preferably dry pyridine). On the other hand, terephthaloyl dichloride is dissolved in an organic solvent (for example, tetrahydrofuran, dichloromethane, 1,4-dioxane, etc., preferably dry tetrahydrofuran) and added dropwise to the previously prepared γ-cyclodextrin solution. At this time, since heat is generated by the condensation reaction, it is desirable to drop the γ-cyclodextrin solution while cooling with an ice bath or the like. The reactor is then placed in a 50-70 ° C. water bath and the reaction mixture is stirred vigorously. After completion of the reaction, the temperature in the reaction vessel is slightly lowered (approximately 5 to 10 ° C.), alcohols (alcohols having 1 to 10 carbon atoms such as methanol, ethanol, propanol, butanol, octanol), aryl alcohols (benzyl alcohol or Benzyl alcohol substituted with alkyl, aryl or acyl groups) or phenols (phenols substituted with phenol, alkyl, aryl or acyl groups) are added and stirring is continued. The obtained crystals are washed with a washing liquid such as alcohols, water, and acetone, and dried. Then, γ-cyclodextrin and terephthalic acid are condensed to form cyclohexane in which alcohols, aryl alcohols, or phenols are reacted at the terminal. A dextrin polymer can be obtained. In addition to γ-cyclodextrin, α- and β-cyclodextrin can form similar condensation polymers. In the present specification, the polymers thus obtained are referred to as “terephthalic acid-γ-CD-methyl polymer” (when the terminal is treated with methanol), “terephthalic acid-γ-CD-ethyl polymer” (terminal is ethanol). ), “Terephthalic acid-γ-CD-benzyl polymer” (when terminal is treated with benzyl alcohol), “terephthalic acid-γ-CD-phenyl polymer” (when terminal is treated with phenol) Although these may be abbreviated as “etc.”, they are porous cyclodextrin polymers that are used in the present invention and are compounds that interact with a halogenated aromatic compound in an attractive manner.
まずγ-CDを有機溶媒(例えばピリジン、ジメチルスルホキシド、ジメチルホルムアミド、1-メチルイミダゾール等)に溶解させる。γ-CDの有機溶媒中の濃度は5~20重量%であることが好ましい。一方、用意したγ-CDの4~12倍量(mol)の二塩化テレフタロイルを有機溶媒(例えばテトラヒドロフラン、ジクロロメタン、1,4-ジオキサン、キシレン、ジメチルホルムアミド、トルエン等)に、濃度10~40重量%で溶解させ、これを先に用意したγ-CD溶液に滴下し、激しく撹拌する。撹拌は、磁気撹拌子や撹拌棒などを用いて行うが、特に撹拌羽根を備えた撹拌棒を用い、反応液の上部と下部とで撹拌速度に差が出ないよう、満遍なく撹拌することができる撹拌装置を用いて行うと好都合である。例として図4に示すような、上部に4枚羽根を取り付けたマックスブレンドを使用すると、反応器中の上部と下部とで均一に撹拌できる。このほか、撹拌効率を高めることができる撹拌羽根であれば、種々の形状の撹拌羽根を使用することができる。γ-CDと二塩化テレフタロイルとの縮合反応が進行するにつれ、熱が発生するので、γ-CD溶液を氷浴などで冷却しながら滴下を行うのが好ましい。好ましくは反応容器内の温度は約0~20℃の範囲を維持するようにする。滴下後、反応容器内の温度を約40~70℃の範囲まで上げて、攪拌する。次に、反応容器内温度を若干下げて約60~65℃にし、次いでここにγ-CDに対して30~80重量%の量の、アルコール類(好ましくは炭素数1~10を有する脂肪族アルコール類)、アリールアルコール類(好ましくはベンジルアルコールまたは置換ベンジルアルコール)、またはフェノール類(好ましくはフェノールまたは置換フェノール類)を、添加する。例えば、アルコール類としてメタノールを加えた場合は、約1~24時間撹拌を続けることができる。こうして、メチル基でエンドキャップされたシクロデキストリンポリマーの結晶が析出するので、析出した結晶を濾取し、水およびアセトンで洗浄して、本発明のシクロデキストリンポリマー(テレフタル酸-γ-CD-メチル高分子)を得ることができる。得られるポリマーの同定は赤外吸収により行うことができ、形態の観察は電子顕微鏡で行うことができる。 Next, a polymer obtained by condensing a commercially available γ-cyclodextrin (hereinafter referred to as “γ-CD”) and terephthaloyl dichloride with a methyl group (hereinafter referred to as “terephthalic acid-γ-CD”). A specific synthesis method of “methyl polymer” or “TPGCDM polymer”) is shown:
First, γ-CD is dissolved in an organic solvent (for example, pyridine, dimethyl sulfoxide, dimethylformamide, 1-methylimidazole, etc.). The concentration of γ-CD in the organic solvent is preferably 5 to 20% by weight. On the other hand, 4 to 12 times (mol) terephthaloyl dichloride prepared γ-CD in an organic solvent (eg, tetrahydrofuran, dichloromethane, 1,4-dioxane, xylene, dimethylformamide, toluene, etc.) at a concentration of 10 to 40 wt. It is dissolved in% and added dropwise to the previously prepared γ-CD solution and stirred vigorously. Stirring is performed using a magnetic stirrer or a stirrer bar. Especially, a stirrer equipped with a stirring blade can be used to stir evenly so that there is no difference in the stirring speed between the upper part and the lower part of the reaction solution. It is convenient to use a stirrer. For example, as shown in FIG. 4, when using Max Blend with four blades attached at the top, the top and bottom in the reactor can be stirred uniformly. In addition, as long as the stirring blade can increase the stirring efficiency, various shapes of the stirring blade can be used. As the condensation reaction between γ-CD and terephthaloyl dichloride proceeds, heat is generated. Therefore, the γ-CD solution is preferably dropped while being cooled in an ice bath or the like. Preferably, the temperature in the reaction vessel is maintained in the range of about 0-20 ° C. After the dropwise addition, the temperature in the reaction vessel is raised to a range of about 40 to 70 ° C. and stirred. Next, the temperature in the reaction vessel is slightly lowered to about 60 to 65 ° C., and then an alcohol (preferably an aliphatic having 1 to 10 carbon atoms) in an amount of 30 to 80% by weight with respect to γ-CD. Alcohols), aryl alcohols (preferably benzyl alcohol or substituted benzyl alcohol), or phenols (preferably phenol or substituted phenols) are added. For example, when methanol is added as an alcohol, stirring can be continued for about 1 to 24 hours. In this way, crystals of cyclodextrin polymer endcapped with methyl groups are precipitated. The precipitated crystals are collected by filtration, washed with water and acetone, and the cyclodextrin polymer of the present invention (terephthalic acid-γ-CD-methyl). Polymer) can be obtained. The obtained polymer can be identified by infrared absorption, and the morphology can be observed with an electron microscope.
滴下ロート、風船付き三方コック、活栓及び攪拌棒(攪拌機によって攪拌)の付いた1lの4つ口セパラブルフラスコに、乾燥γ-CD(50 g, 0.039mol、含水量1%以下、純正化学工業)と特級ピリジン(660ml、和光純薬工業)を入れて室温で1時間攪拌した。フラスコを氷浴につけた後、特級テトラヒドロフラン(220mL、和光純薬工業)に溶解した二塩化テレフタロイル(78.3g, 0.39mol、東京化成工業)を1時間かけて滴下した。滴下後、氷浴を外し、湯浴(70℃)により内温70℃で3時間攪拌した。反応終了後、内温を65℃まで下げて、 1級メタノール(100ml 、純正化学工業)を加え、2時間攪拌した。結晶を吸引濾過した後、得られた結晶を水(400mL×3)、1級アセトン(400ml×1、純正化学工業)の順で洗浄し、得られた固体を120℃で終夜真空乾燥した。105gのテレフタル酸-γ-CD-メチル高分子(以下、TPGCDMと略す)が得られた。
IR (KBr) 3448,1719,1277,1105,1018,732 cm-1 [Synthesis Example 1] A polymer obtained by condensing a terminal of a polymer obtained by condensing γ-cyclodextrin (hereinafter referred to as “γ-CD”) and terephthaloyl dichloride with a methyl group (hereinafter referred to as “terephthalic acid-γ-CD”). -Synthesis of "methyl polymer" or "TPGCDM polymer")) Into a 1 liter four-necked separable flask equipped with a dropping funnel, a three-way cock with a balloon, a stopcock and a stirring rod (stirred by a stirrer), dry γ- CD (50 g, 0.039 mol, water content 1% or less, Junsei Chemical Industry) and special grade pyridine (660 ml, Wako Pure Chemical Industries, Ltd.) were added and stirred at room temperature for 1 hour. After placing the flask in an ice bath, terephthaloyl dichloride (78.3 g, 0.39 mol, Tokyo Chemical Industry) dissolved in special grade tetrahydrofuran (220 mL, Wako Pure Chemical Industries) was added dropwise over 1 hour. After dropping, the ice bath was removed, and the mixture was stirred for 3 hours at an internal temperature of 70 ° C. with a hot water bath (70 ° C.). After completion of the reaction, the internal temperature was lowered to 65 ° C., primary methanol (100 ml, Pure Chemical Industries) was added, and the mixture was stirred for 2 hours. After the crystals were suction filtered, the obtained crystals were washed with water (400 mL × 3) and primary acetone (400 ml × 1, Junsei Kagaku Kogyo) in this order, and the obtained solid was vacuum-dried at 120 ° C. overnight. 105 g of terephthalic acid-γ-CD-methyl polymer (hereinafter abbreviated as TPGCDM) was obtained.
IR (KBr) 3448,1719,1277,1105,1018,732 cm -1
TPGCDM高分子(240mg)を充填したステンレスカラム(内径4mm×長さ10mm)を温度制御付オーブン内に取り付け、そのカラム内に2,2’,3,3’,5,5’-HECBP含有絶縁油(濃度:100ppm、総重量:400mg、絶縁油は谷口石油精製株式会社の高圧絶縁油)を窒素ガスで流し込み、130℃で注出したところ349 mgの絶縁油が得られた。その絶縁油の2,2’,3,3’,5,5’-HECBP濃度を、QCMS-QP5050(SHIMADZU)を使用し、M/Z 360を用いてSIM(selective ion monitoring)法による内部標準法(内部標準物質:2,2’,4,4’,5,5’-ヘキサクロロビフェニル)で測定を行ったところ、2,2’,3,3’,5,5’-HECBPは含まれていなかった。結果を表1に記載する。 [Example 1] 2,2 ', 3,3', 5,5'-hexachlorobiphenyl (hereinafter referred to as "2,2'3,3'5,5'-HECBP") using TPGCDM polymer. Selective fixing A stainless steel column (4mm ID x 10mm length) packed with TPGCDM polymer (240mg) is installed in an oven with temperature control, and 2,2 ', 3,3', 5,5'-HECBP in the column The contained insulating oil (concentration: 100 ppm, total weight: 400 mg, high-pressure insulating oil from Taniguchi Oil Refinery Co., Ltd.) was poured in with nitrogen gas and poured at 130 ° C. to obtain 349 mg of insulating oil. The internal standard by SIM (selective ion monitoring) method using M / Z 360 for the 2,2 ', 3,3', 5,5'-HECBP concentration of the insulating oil using QCMS-QP5050 (SHIMADZU) Measured by the method (internal standard substance: 2,2 ', 4,4', 5,5'-hexachlorobiphenyl), 2,2 ', 3,3', 5,5'-HECBP is included It wasn't. The results are listed in Table 1.
TPGCDM高分子(1.5g)を充填したステンレスカラム(内径8mm×長さ300mm)を温度制御付オーブン内に取り付け、そのカラム内に、実際にPCBが溶解し、放置されている絶縁油(以下、「実液」と称する。PCB濃度:26.5ppm、総重量:2.6g)を窒素ガスで流し込み、130℃で注出したところ1.6gの絶縁油が得られた。その絶縁油のPCB濃度を平成4年厚生省告示第192号別表第3の第1に規定される方法によりガスクロマトグラフィ法にて測定したところ、PCBは含まれていなかった。結果を表2に記載する。 [Example 2] Selective fixation of polychlorinated biphenyl (hereinafter referred to as “PCB”) with TPGCDM polymer A stainless steel column (inner diameter 8 mm × length 300 mm) packed with TPGCDM polymer (1.5 g) was oven controlled with temperature. The insulating oil (hereinafter referred to as “actual liquid”; PCB concentration: 26.5 ppm, total weight: 2.6 g) where PCB is actually dissolved and left in the column is poured into the column with nitrogen gas, When poured out at 130 ° C., 1.6 g of insulating oil was obtained. When the PCB concentration of the insulating oil was measured by the gas chromatographic method according to the method prescribed in 1992, Ministry of Health and Welfare Notification No. 192 Attached Table 3, no PCB was contained. The results are listed in Table 2.
滴下ロート、風船付き三方コック、活栓及び攪拌棒(攪拌機によって攪拌)の付いた1 Lの四つ口セパラブルフラスコに、乾燥β-シクロデキストリン(以下、β-CDと略す、50 g、0.044 mol、含水量1%以下、純正化学)と特級ピリジン(660 mL、和光純薬工業)を入れて室温で1時間攪拌した。フラスコを氷浴につけた後、特級テトラヒドロフラン(230 mL、和光純薬工業)に溶解した二塩化テレフタロイル(89.4 g、0.44 mol、東京化成工業)を1時間かけて滴下した。滴下後、氷浴を外し、湯浴(70℃)により内温70℃で4時間攪拌した。反応終了後、内温を65℃まで下げて、1級メタノール(35.6 mL、0.88 mmol、純正化学)を加え、4時間攪拌した。結晶を吸引濾過した後、得られた結晶を1級メタノール(400 mL×2、純正化学)、水(400 mL×3)、1級アセトン(400ml×2、純正化学)の順で洗浄し、得られた固体を120℃で終夜真空乾燥した。98.7 gのTPBCDM高分子が得られた。
IR (KBr): 3448, 1718, 1277, 1105, 1018, 731 cm-1 [Synthesis Example 2] Polymer obtained by condensing β-CD and terephthaloyl dichloride with a methyl group at the end (hereinafter referred to as “terephthalic acid-β-CD-methyl polymer” or “TPBCDM polymer”) )) Into a 1 L four-necked separable flask equipped with a dropping funnel, a three-way cock with a balloon, a stopcock and a stirring rod (stirred by a stirrer), dry β-cyclodextrin (hereinafter abbreviated as β-CD, 50 g, 0.044 mol, water content 1% or less, Pure Chemical) and special grade pyridine (660 mL, Wako Pure Chemical Industries) were added and stirred at room temperature for 1 hour. After placing the flask in an ice bath, terephthaloyl dichloride (89.4 g, 0.44 mol, Tokyo Kasei Kogyo) dissolved in special grade tetrahydrofuran (230 mL, Wako Pure Chemical Industries) was added dropwise over 1 hour. After the dropwise addition, the ice bath was removed, and the mixture was stirred for 4 hours at 70 ° C. with a hot water bath (70 ° C.). After completion of the reaction, the internal temperature was lowered to 65 ° C., primary methanol (35.6 mL, 0.88 mmol, Junsei Kagaku) was added, and the mixture was stirred for 4 hours. After the crystals were filtered off with suction, the crystals obtained were washed in the order of primary methanol (400 mL × 2, Junsei Chemical), water (400 mL × 3), primary acetone (400 ml × 2, Junsei Chemical), in that order. The resulting solid was vacuum dried at 120 ° C. overnight. 98.7 g of TPBCDM polymer was obtained.
IR (KBr): 3448, 1718, 1277, 1105, 1018, 731 cm -1
合成例2において、1級メタノールの代わりに1級エタノール(純正化学)を使用したこと以外は、合成例2と同様の方法にてテレフタル酸-β-CD-エチル高分子(以下、「TPBCDE」と称する。)を合成した(合成例3)。
IR (KBr) 3448, 1717, 1277, 1105, 1018, 731 cm-1
同様に、特級2-プロパノール(東京化成工業)を使用し、テレフタル酸-β-CD-プロピル高分子(以下、「TPBCDP」と称する。)を合成した(合成例4)。
IR (KBr) 3448, 1718, 1276, 1103, 1018, 732 cm-1
同様に、特級2-ベンジルアルコール(純正化学)を使用し、テレフタル酸-β-CD-ベンジル高分子(以下、「TPBCDB」と称する。)を合成した(合成例5)。
IR (KBr) 3448, 1718, 1274, 1104, 1018, 731 cm-1
同様に、特級1-オクタノール(純正化学)を使用し、テレフタル酸-β-CD-オクチル高分子(以下、「TPBCDO」と称する。)を合成した(合成例6)。
IR (KBr) 3448, 1718, 1272, 1104, 1018, 731 cm-1 [Synthesis Examples 3 to 6]
In Synthesis Example 2, terephthalic acid-β-CD-ethyl polymer (hereinafter “TPBCDE”) was prepared in the same manner as in Synthesis Example 2, except that primary ethanol (Pure Chemical) was used instead of primary methanol. Was synthesized (Synthesis Example 3).
IR (KBr) 3448, 1717, 1277, 1105, 1018, 731 cm -1
Similarly, terephthalic acid-β-CD-propyl polymer (hereinafter referred to as “TPBCDP”) was synthesized using special grade 2-propanol (Tokyo Chemical Industry) (Synthesis Example 4).
IR (KBr) 3448, 1718, 1276, 1103, 1018, 732 cm -1
Similarly, terephthalic acid-β-CD-benzyl polymer (hereinafter referred to as “TPBCDB”) was synthesized using special grade 2-benzyl alcohol (Pure Chemical) (Synthesis Example 5).
IR (KBr) 3448, 1718, 1274, 1104, 1018, 731 cm -1
Similarly, terephthalic acid-β-CD-octyl polymer (hereinafter referred to as “TPBCDO”) was synthesized using special grade 1-octanol (Pure Chemical) (Synthesis Example 6).
IR (KBr) 3448, 1718, 1272, 1104, 1018, 731 cm -1
上記の合成例2で得られたTPBCDM高分子(350mg)を充填したステンレスカラム(内径4 mm×長さ10 mm)を温度制御付オーブン内に取り付け、そのカラム内に 2,2’,3,3’,5,5’-HECBP含有絶縁油(濃度:100 ppm、総重量:350 mg、絶縁油は谷口石油精製株式会社の高圧絶縁油)を窒素ガスで流し込み、130℃で注出したところ269 mgの絶縁油が得られた。その絶縁油の2,2’,3,3’,5,5’-HECBP濃度をガスクロマトグラフィーで測定したところ、2,2’,3,3’,5,5’-HECBPは含まれていなかった。結果を表1に記載する。 [Example 3] Selective fixation of 2,2'3,3'5,5'-HECBP with TPBCDM polymer Stainless steel column (inner diameter 4 mm) packed with TPBCDM polymer (350 mg) obtained in Synthesis Example 2 above × 10 mm in length) installed in an oven with temperature control, and 2,2 ', 3,3', 5,5'-HECBP-containing insulating oil (concentration: 100 ppm, total weight: 350 mg) in the column The insulating oil was Taniguchi Petroleum Refining Co., Ltd., high-pressure insulating oil) which was poured with nitrogen gas and poured out at 130 ° C. to obtain 269 mg of insulating oil. When 2,2 ', 3,3', 5,5'-HECBP concentration of the insulating oil was measured by gas chromatography, 2,2 ', 3,3', 5,5'-HECBP was not included. There wasn't. The results are listed in Table 1.
上記の合成例3~6で合成したTPBCDE、TPBCDP、TPBCDBおよびTPBCDOを用い、実施例3と同様に2,2’3,3’5,5’-HECBPの選択固着試験を行った。結果を表1に列記する。 [Examples 4 to 7] Selective fixation of 2,2'3,3'5,5'-HECBP by the polymers synthesized in Synthesis Examples 3 to 6 TPBCDE, TPBCDP and TPBCDB synthesized in Synthesis Examples 3 to 6 above In addition, a selective fixation test of 2,2′3,3′5,5′-HECBP was conducted in the same manner as in Example 3 using TPBCDO. The results are listed in Table 1.
合成例2で得られたTPBCDM高分子(2.0 g)を充填したステンレスカラム(内径8 mm×長さ300 mm)を温度制御付オーブン内に取り付け、そのカラム内に実施例2でも用いた実液(PCB濃度:26.5 ppm、総重量:2.0 g)を窒素ガスで流し込み、130℃で注出したところ962 mgの絶縁油が得られた。その絶縁油のPCB濃度をガスクロマトグラフィーで測定したところ、PCBは含まれていなかった。結果を表2に記載する。 [Example 8] Selective fixing of PCB with TPBCDM polymer A stainless steel column (inner diameter 8 mm x length 300 mm) packed with the TPBCDM polymer (2.0 g) obtained in Synthesis Example 2 was mounted in an oven with temperature control. The actual liquid (PCB concentration: 26.5 ppm, total weight: 2.0 g) used in Example 2 was poured into the column with nitrogen gas and poured out at 130 ° C. to obtain 962 mg of insulating oil. When the PCB concentration of the insulating oil was measured by gas chromatography, it did not contain PCB. The results are listed in Table 2.
上記の合成例3~6で合成したTPBCDE、TPBCDP、TPBCDBおよびTPBCDOを用い、実施例8と同様にPCBの選択固着試験を行った。結果を表2に列記する。 [Examples 9 to 12] Selective fixing of PCB by the polymers synthesized in Synthesis Examples 3 to 6 Using the TPBCDE, TPBCDP, TPBCDB, and TPBCDO synthesized in the above Synthesis Examples 3 to 6, the PCB was prepared in the same manner as in Example 8. A selective sticking test was performed. The results are listed in Table 2.
比較実施例として、末端をアルコール類などで処理していないテレフタル酸γ-CDを特開2009-95792号の合成例1に記載された方法に則り合成した。 [Comparative Synthesis Example 1] Synthesis of condensation polymer of γ-CD and terephthalic acid (hereinafter referred to as “terephthalic acid-γ-CD polymer”) As a comparative example, the terminal is not treated with alcohols or the like. Terephthalic acid γ-CD was synthesized according to the method described in Synthesis Example 1 of JP-A-2009-95792.
IR (neat) 3418, 1716, 1409, 1266, 1097, 1041, 1017, 874, 730 cm-1 In a 1L four-necked separable flask equipped with a dropping funnel, a three-way cock with a balloon, a stopcock and a stirring rod (stirred by a stirrer), dry γ-cyclodextrin (50 g, 0.039 mol, water content 1% or less, pure chemical Industrial) and special grade pyridine (660 ml, Wako Pure Chemical Industries) were added and stirred at room temperature for 1 hour. After placing the flask in an ice bath, terephthaloyl dichloride (78.3 g, 0.39 mol, Tokyo Chemical Industry) dissolved in special grade tetrahydrofuran (220 mL, Wako Pure Chemical Industries) was added dropwise over 1 hour. After the dropwise addition, the ice bath was removed, and the mixture was stirred for 3 hours at an internal temperature of 70 ° C. with a hot water bath (70 ° C.). After completion of the reaction, water (100 ml, Junsei Kagaku Kogyo) was added and stirred in a hot water bath (70 ° C.) for 2 hours. After the crystals were suction filtered, the obtained crystals were washed with water (400 mL × 3) and primary acetone (400 ml × 1, Junsei Kagaku Kogyo) in this order, and the obtained solid was vacuum-dried at 120 ° C. overnight. 105 g of terephthalic acid-γ-CD polymer (hereinafter referred to as “TPGCD”) was obtained.
IR (neat) 3418, 1716, 1409, 1266, 1097, 1041, 1017, 874, 730 cm -1
上記の比較合成例1にて合成したTPGCD(450mg)を充填したステンレスカラム(内径4mm×長さ10mm)を温度制御付オーブン内に取り付け、そのカラム内に2,2’,3,3’,5,5’-HECBP含有絶縁油(100ppm、450mg)を窒素ガスで流し込み、130℃で注出したところ374 mgの絶縁油が得られた。その絶縁油の2,2’,3,3’,5,5’-HECBP濃度をガスクロマトグラフィーで測定したところ、2,2’,3,3’,5,5’-HECBPは含まれていなかった。表1から明らかなとおり、本発明の実施例1では、絶縁油:吸着材料の重量比が400:240という絶縁油が過剰の条件下であっても、2,2’,3,3’,5,5’-HECBPをほぼ完全に吸着することができたが、比較実施例1では、実施例1と同等の結果を得るために、絶縁油(450mg)と同量の吸着材料(450mg)が必要であった。すなわち、TPGCD高分子(末端にメタノールを反応させていないポリマー)よりもTPGCDM高分子(本発明による、末端にメタノールを反応させた多孔質のシクロデキストリンポリマー)の方が、より優れた吸着性能を有していることがわかった。 [Comparative Example 1] 2,2 ', 3,3', 5,5'-hexachlorobiphenyl (hereinafter referred to as "2,2 ', 3,3', 5,5'-HECBP") by TPGCD A stainless steel column (inner diameter 4 mm x length 10 mm) packed with TPGCD (450 mg) synthesized in Comparative Synthesis Example 1 above was mounted in an oven with temperature control, and 2,2 ', 3, When 3 ′, 5,5′-HECBP-containing insulating oil (100 ppm, 450 mg) was poured with nitrogen gas and poured out at 130 ° C., 374 mg of insulating oil was obtained. When 2,2 ', 3,3', 5,5'-HECBP concentration of the insulating oil was measured by gas chromatography, 2,2 ', 3,3', 5,5'-HECBP was not included. There wasn't. As is apparent from Table 1, in Example 1 of the present invention, even when the insulating oil: adsorbing material weight ratio is 400: 240 and the insulating oil is excessive, 2,2 ′, 3,3 ′, Although 5,5′-HECBP could be almost completely adsorbed, in Comparative Example 1, in order to obtain the same result as in Example 1, the same amount of adsorbing material (450 mg) as the insulating oil (450 mg) Was necessary. That is, the TPGCD polymer (the porous cyclodextrin polymer reacted with methanol at the end according to the present invention) has better adsorption performance than the TPGCD polymer (the polymer not reacted with methanol at the end). I found it.
上記の比較合成例1にて合成したTPGCD高分子(11g)を充填したステンレスカラム(内径2cm×長さ25cm)を温度制御付オーブン内に取り付け、そのカラム内に実液(26.5ppm、9.0 g)を窒素ガスで流し込み、130℃で注出したところ3.0 gの絶縁油が得られた。その絶縁油のPCB濃度をガスクロマトグラフィーで測定したところ、PCBは含まれていなかった。本発明の実施例2では、絶縁油:吸着材料の重量比が2.6:1.6という絶縁油が過剰の条件下であっても、PCBをほぼ完全に吸着することができたが、比較実施例2では、実施例2と同等の結果を得るために、絶縁油(9.0g)よりも多い吸着材料(11.0g)が必要であった。すなわち、TPGCD高分子(末端にメタノールを反応させていないポリマー)よりもTPGCDM高分子(本願発明による、末端にメタノールを反応させた多孔質のシクロデキストリンポリマー)の方が、より優れた吸着性能を有していることがわかった。 [Comparative Example 2] Selective fixation of PCB by TPGCD A stainless steel column (inner diameter 2 cm x length 25 cm) filled with the TPGCD polymer (11 g) synthesized in the above Comparative Synthesis Example 1 was mounted in an oven with temperature control. The actual liquid (26.5 ppm, 9.0 g) was poured into the column with nitrogen gas and poured out at 130 ° C. to obtain 3.0 g of insulating oil. When the PCB concentration of the insulating oil was measured by gas chromatography, it did not contain PCB. In Example 2 of the present invention, PCB could be almost completely adsorbed even when the insulating oil: adsorbing material weight ratio of 2.6: 1.6 was excessive. In Comparative Example 2, in order to obtain the same result as in Example 2, more adsorbent material (11.0 g) than insulating oil (9.0 g) was required. That is, the TPGCD polymer (the porous cyclodextrin polymer reacted with methanol at the end according to the present invention) has better adsorption performance than the TPGCD polymer (the polymer not reacted with methanol at the end). I found it.
特許第3010602号の段落番号0025に開示された方法に概ね従い、ポリマーを合成した。 [Comparative Synthesis Example 2] Polymer synthesis according to Japanese Patent No. 3010602 A polymer was synthesized generally according to the method disclosed in paragraph No. 0025 of Japanese Patent No. 3010602.
比較合成例2ポリマー(350 mg)を充填したステンレスカラム(内径4 mm×長さ10 mm)を温度制御付オーブン内に取り付け、そのカラム内に2,2’,3,3’,5,5’-ヘキサクロロビフェニル(2,2’,3,3’,5,5’-HECBP)含有絶縁油(100 ppm、350 mg)を窒素ガスで流し込み、130℃で注出したところ298 mgの絶縁油が得られた。その絶縁油の2,2’,3,3’,5,5’-HECBP濃度をガスクロマトグラフィーで測定したところ、2,2’,3,3’,5,5’-HECBP濃度は96.1ppmであった。すなわち、比較合成例2で合成したポリマーは、ハロゲン化芳香族化合物を効果的に吸着できないことがわかった。 [Comparative Example 3]
Comparative Synthesis Example 2 A stainless steel column (inner diameter 4 mm x length 10 mm) packed with polymer (350 mg) was installed in a temperature-controlled oven, and 2,2 ', 3,3', 5,5 Insulating oil (100 ppm, 350 mg) containing '-hexachlorobiphenyl (2,2', 3,3 ', 5,5'-HECBP) was poured with nitrogen gas and poured out at 130 ° C to give 298 mg of insulating oil was gotten. The 2,2 ', 3,3', 5,5'-HECBP concentration of the insulating oil was measured by gas chromatography, and the 2,2 ', 3,3', 5,5'-HECBP concentration was 96.1 ppm. Met. That is, it was found that the polymer synthesized in Comparative Synthesis Example 2 cannot effectively adsorb the halogenated aromatic compound.
比較合成例2ポリマー(2.0 g)を充填したステンレスカラム(内径8 mm×長さ300 mm)を温度制御付オーブン内に取り付け、そのカラム内に実液(26.5 ppm、2.0 g)を窒素ガスで流し込み、130℃で注出したところ0.96gの絶縁油が得られた。その絶縁油のPCB濃度をガスクロマトグラフィーで測定したところ、PCB濃度は26.2ppmであった。すなわち比較合成例2で合成したポリマーは、実液中のPCBを効果的に吸着できないことがわかった。 [Comparative Example 4]
Comparative Synthesis Example 2 A stainless steel column (inner diameter 8 mm x length 300 mm) packed with polymer (2.0 g) was mounted in an oven with temperature control, and the actual liquid (26.5 ppm, 2.0 g) was placed in the column with nitrogen gas. After pouring and pouring at 130 ° C., 0.96 g of insulating oil was obtained. When the PCB concentration of the insulating oil was measured by gas chromatography, the PCB concentration was 26.2 ppm. That is, it was found that the polymer synthesized in Comparative Synthesis Example 2 cannot effectively adsorb PCB in the actual liquid.
Claims (17)
- シクロデキストリンと有機二塩基酸または有機二塩基酸ハロゲン化物とを縮合させたポリマーの末端にアルコール類、アリールアルコール類またはフェノール類を反応させた、ハロゲン化芳香族化合物と吸引的に相互作用する多孔質のシクロデキストリンポリマーを含有する、有機媒体に含有されるハロゲン化芳香族化合物の選択固着剤。 Porous that interacts with halogenated aromatic compounds in an attractive manner by reacting alcohols, aryl alcohols or phenols at the end of the polymer condensed with cyclodextrin and organic dibasic acid or organic dibasic acid halide Selective fixing agent for halogenated aromatic compounds contained in an organic medium, comprising a high-quality cyclodextrin polymer.
- 有機二塩基酸または有機二塩基酸ハロゲン化物が、テレフタル酸、イソフタル酸、マレイン酸、リンゴ酸、マロン酸、コハク酸、フマル酸、グルタル酸、アジピン酸、フタル酸またはこれらのハロゲン化物から選択される、請求項1に記載の選択固着剤。 The organic dibasic acid or organic dibasic acid halide is selected from terephthalic acid, isophthalic acid, maleic acid, malic acid, malonic acid, succinic acid, fumaric acid, glutaric acid, adipic acid, phthalic acid or their halides The selective fixing agent according to claim 1.
- アルコール類が炭素数1~10のアルキル基から選択され、アリールアルコール類がベンジルアルコール、またはアルキル、アリール、またはアシル基で置換されたベンジルアルコール類から選択され、フェノール類がフェノール、またはアルキル、アリール、またはアシル基で置換されたフェノールから選択される、請求項1または2に記載の選択固着剤。 The alcohol is selected from an alkyl group having 1 to 10 carbon atoms, the aryl alcohol is selected from benzyl alcohol, or benzyl alcohol substituted with an alkyl, aryl, or acyl group, and the phenol is phenol, alkyl, aryl, or aryl Or a selective sticking agent according to claim 1 or 2, selected from phenols substituted with acyl groups.
- ハロゲン化芳香族化合物と吸引的に相互作用する多孔質のシクロデキストリンポリマーが、固体担体に固定化されている、請求項1~3のいずれかに記載の選択固着剤。 The selective fixing agent according to any one of claims 1 to 3, wherein a porous cyclodextrin polymer that interacts with the halogenated aromatic compound in a suction manner is immobilized on a solid support.
- ハロゲン化芳香族化合物が、ダイオキシン類、ポリクロロビフェニル類、またはポリクロロベンゼン類である、請求項1~4のいずれかに記載の選択固着剤。 The selective fixing agent according to any one of claims 1 to 4, wherein the halogenated aromatic compound is dioxins, polychlorobiphenyls, or polychlorobenzenes.
- 有機媒体が、有機液体、絶縁油、熱媒体、潤滑油、可塑剤、塗料及びインキ及びこれらの混合物からなる群から選択される、請求項1~5のいずれかに記載の選択固着剤。 The selective fixing agent according to any one of claims 1 to 5, wherein the organic medium is selected from the group consisting of an organic liquid, an insulating oil, a heat medium, a lubricating oil, a plasticizer, a paint and an ink, and a mixture thereof.
- シクロデキストリンと有機二塩基酸または有機二塩基酸ハロゲン化物とを縮合したポリマーの末端にアルコール類、アリールアルコール類またはフェノール類を反応させた、ハロゲン化芳香族化合物と吸引的に相互作用する多孔質のシクロデキストリンポリマーを含有する、ハロゲン化芳香族化合物の選択固着剤と、ハロゲン化芳香族化合物を含有する有機媒体とを接触させ、該有機媒体に含有されたハロゲン化芳香族化合物を該ハロゲン化芳香族化合物と吸引的に相互作用する多孔質のシクロデキストリンポリマーに固着させて、ハロゲン化芳香族化合物を含有しない有機媒体を得ることを特徴とする、方法。 Porous that interacts with halogenated aromatic compounds in an attractive manner by reacting alcohols, aryl alcohols or phenols at the end of a polymer obtained by condensing cyclodextrin with organic dibasic acid or organic dibasic acid halide A selective fixing agent for a halogenated aromatic compound containing a cyclodextrin polymer of the above and an organic medium containing a halogenated aromatic compound are brought into contact with each other, and the halogenated aromatic compound contained in the organic medium is subjected to the halogenation. A method characterized in that an organic medium containing no halogenated aromatic compound is obtained by fixing to a porous cyclodextrin polymer that interacts with an aromatic compound in an aspiration manner.
- 有機二塩基酸または有機二塩基酸ハロゲン化物が、テレフタル酸、イソフタル酸、マレイン酸、リンゴ酸、マロン酸、コハク酸、フマル酸、グルタル酸、アジピン酸、フタル酸またはこれらのハロゲン化物から選択される、請求項7に記載の方法。 The organic dibasic acid or organic dibasic acid halide is selected from terephthalic acid, isophthalic acid, maleic acid, malic acid, malonic acid, succinic acid, fumaric acid, glutaric acid, adipic acid, phthalic acid or their halides The method according to claim 7.
- アルコール類が炭素数1~10のアルキル基から選択され、アリールアルコール類がベンジルアルコール、またはアルキル、アリール、またはアシル基で置換されたベンジルアルコール類から選択され、フェノール類がフェノール、またはアルキル、アリール、またはアシル基で置換されたフェノールから選択される、請求項7または8に記載の方法。 The alcohol is selected from an alkyl group having 1 to 10 carbon atoms, the aryl alcohol is selected from benzyl alcohol, or benzyl alcohol substituted with an alkyl, aryl, or acyl group, and the phenol is phenol, alkyl, aryl, or aryl Or a method according to claim 7 or 8, selected from phenols substituted with acyl groups.
- ハロゲン化芳香族化合物と吸引的に相互作用する多孔質のシクロデキストリンポリマーが、固体担体に固定化されていることを特徴とする選択固着剤を使用する、請求項7~9のいずれかに記載の方法。 10. The selective fixing agent characterized in that the porous cyclodextrin polymer that interacts with the halogenated aromatic compound in a suction manner is immobilized on a solid support. the method of.
- ハロゲン化芳香族化合物が、ダイオキシン類、ポリクロロビフェニル類、またはポリクロロベンゼン類である、請求項7~10のいずれかに記載の方法。 The method according to any one of claims 7 to 10, wherein the halogenated aromatic compound is dioxins, polychlorobiphenyls, or polychlorobenzenes.
- 有機媒体が、有機液体、絶縁油、機械油、熱媒体、潤滑油、可塑剤、塗料及びインキ及びこれらの混合物からなる群から選択される、請求項7~11のいずれかに記載の方法。 The method according to any one of claims 7 to 11, wherein the organic medium is selected from the group consisting of an organic liquid, an insulating oil, a machine oil, a heat medium, a lubricating oil, a plasticizer, a paint and an ink, and a mixture thereof.
- 有機溶媒中に溶解したシクロデキストリンに、有機二塩基酸または有機二塩基酸ハロゲン化物含有有機溶媒を滴下して撹拌し、次いでアルコール類、アリールアルコール類、またはフェノール類を添加してエステル化反応させることを含む、多孔質のシクロデキストリンポリマーの製造方法。 Add organic dibasic acid or organic dibasic acid halide-containing organic solvent dropwise to cyclodextrin dissolved in organic solvent, and then add alcohols, aryl alcohols, or phenols for esterification reaction A process for producing a porous cyclodextrin polymer.
- 有機二塩基酸または有機二塩基酸ハロゲン化物が、テレフタル酸、イソフタル酸、マレイン酸、リンゴ酸、マロン酸、コハク酸、フマル酸、グルタル酸、アジピン酸、フタル酸またはこれらのハロゲン化物から選択される、請求項13に記載の方法。 The organic dibasic acid or organic dibasic acid halide is selected from terephthalic acid, isophthalic acid, maleic acid, malic acid, malonic acid, succinic acid, fumaric acid, glutaric acid, adipic acid, phthalic acid or their halides The method of claim 13.
- アルコール類が、炭素数1~10を有する脂肪族アルコール類から選択され、アリールアルコール類がベンジルアルコールまたは置換ベンジルアルコールから選択され、フェノール類がフェノールまたは置換フェノール類から選択される、請求項13または14に記載の方法。 The alcohol is selected from aliphatic alcohols having 1 to 10 carbon atoms, the aryl alcohol is selected from benzyl alcohol or substituted benzyl alcohol, and the phenol is selected from phenol or substituted phenols, 14. The method according to 14.
- シクロデキストリンを溶解させる有機溶媒が、ピリジン、ジメチルスルホキシド、ジメチルホルムアミド、および1-メチルイミダゾールから選択され、有機二塩基酸または有機二塩基酸ハロゲン化物を溶解させる有機溶媒が、テトラヒドロフラン、ジクロロメタン、1,4-ジオキサン、キシレン、ジメチルホルムアミドおよびトルエンから選択される、請求項13~15のいずれかに記載の方法。 The organic solvent for dissolving cyclodextrin is selected from pyridine, dimethyl sulfoxide, dimethylformamide, and 1-methylimidazole, and the organic solvent for dissolving the organic dibasic acid or organic dibasic acid halide is tetrahydrofuran, dichloromethane, 1, The process according to any of claims 13 to 15, selected from 4-dioxane, xylene, dimethylformamide and toluene.
- 請求項13~16のいずれかに記載の方法で製造された、多孔質のシクロデキストリンポリマー。 A porous cyclodextrin polymer produced by the method according to any one of claims 13 to 16.
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JP2013178152A (en) * | 2012-02-28 | 2013-09-09 | Neos Co Ltd | Radioactive substance adsorption/removal material |
JP2013208549A (en) * | 2012-03-30 | 2013-10-10 | Neos Co Ltd | Method for selectively sticking halogenated aromatic compound using centrifugal separation |
KR101661073B1 (en) | 2012-07-06 | 2016-09-28 | 네오스 컴파니 리미티드 | Method for selectively fixing persistent organic pollutant using cyclodextrin polymer |
WO2014007163A1 (en) * | 2012-07-06 | 2014-01-09 | 株式会社ネオス | Method for selectively fixing persistent organic pollutant using cyclodextrin polymer |
JP2014014746A (en) * | 2012-07-06 | 2014-01-30 | Neos Co Ltd | Method for selectively fixing persistent organic pollutant using cyclodextrin polymer |
KR20150028834A (en) | 2012-07-06 | 2015-03-16 | 네오스 컴파니 리미티드 | Method for selectively fixing persistent organic pollutant using cyclodextrin polymer |
WO2015146769A1 (en) * | 2014-03-26 | 2015-10-01 | 株式会社ネオス | Method for low-temperature selective fixing of halogenated aromatic compound contained in medium |
JPWO2015146769A1 (en) * | 2014-03-26 | 2017-04-13 | 株式会社ネオス | Low temperature selective fixing method of halogenated aromatic compound contained in medium |
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JP2016168580A (en) * | 2015-03-16 | 2016-09-23 | 株式会社ネオス | Adsorption processing method of halogenated aromatic compound |
JP2017006865A (en) * | 2015-06-24 | 2017-01-12 | 株式会社ネオス | Method for producing cyclodextrin polymer |
JP2021063223A (en) * | 2019-10-11 | 2021-04-22 | 南京大学 | Porous cyclodextrin polymer |
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CN102762294A (en) | 2012-10-31 |
KR20120112832A (en) | 2012-10-11 |
CN102762294B (en) | 2015-05-20 |
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JPWO2011102346A1 (en) | 2013-06-17 |
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