WO2015083489A1 - ポリフッ化ビニリデン樹脂粒子、およびその製造方法 - Google Patents
ポリフッ化ビニリデン樹脂粒子、およびその製造方法 Download PDFInfo
- Publication number
- WO2015083489A1 WO2015083489A1 PCT/JP2014/079541 JP2014079541W WO2015083489A1 WO 2015083489 A1 WO2015083489 A1 WO 2015083489A1 JP 2014079541 W JP2014079541 W JP 2014079541W WO 2015083489 A1 WO2015083489 A1 WO 2015083489A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pvdf resin
- solution
- water
- resin particles
- polyvinylidene fluoride
- Prior art date
Links
Images
Classifications
-
- 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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/14—Powdering or granulating by precipitation from solutions
-
- 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
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/12—Powdering or granulating
- C08J3/122—Pulverisation by spraying
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L27/00—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers
- C08L27/02—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L27/12—Compositions of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Compositions of derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08L27/16—Homopolymers or copolymers or vinylidene fluoride
-
- 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
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing chlorine atoms
- C08J2327/08—Homopolymers or copolymers of vinylidene chloride
-
- 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
- C08J2327/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers
- C08J2327/02—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment
- C08J2327/12—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen; Derivatives of such polymers not modified by chemical after-treatment containing fluorine atoms
- C08J2327/16—Homopolymers or copolymers of vinylidene fluoride
Definitions
- the present invention relates to polyvinylidene fluoride resin particles and a method for producing the same.
- PVDF resin polyvinylidene fluoride resin
- Particles made of polyvinylidene fluoride resin have excellent weather resistance, stain resistance, solvent resistance, water resistance, moisture resistance, etc. It is suitably used as an antifouling material in the machine, for toner use, weather resistance and water resistant paint resin.
- PVDF resin particles As a method for producing PVDF resin particles, after dissolving a fluorine-containing resin in a polar organic solvent, the solution is poured into water to produce particles having a particle size of several hundred ⁇ m to several mm (Patent Document 1). , A method of obtaining a particle having a particle size of several tens of ⁇ m by spray-drying a coating stock solution containing a fluorine copolymer, etc.
- Patent Document 2 vinylidene fluoride in the presence of a fluorine-based surfactant and a nonionic surfactant
- Patent Document 3 a method of producing an aqueous dispersion containing PVDF resin particles having a particle size of 200 nm or less (Patent Document 3) by emulsion polymerization of a monomer or a monomer mixture containing vinylidene fluoride.
- Non-Patent Documents 1 and 2 Non-Patent Documents 1 and 2 and is used for liquid crystal spacers, conductive particles, copy toners, medical examination carriers, and the like.
- Non-Patent Documents 1 and 2 Non-Patent Documents 1 and 2 and is used for liquid crystal spacers, conductive particles, copy toners, medical examination carriers, and the like.
- an example of synthesizing PVDF resin particles by soap-free emulsion polymerization has not yet been reported.
- This invention makes it a subject to manufacture PVDF resin particle
- the present inventors surprisingly added a PVDF resin solution of an organic solvent containing water to a poor solvent of a PVDF resin substantially free of a surfactant, Alternatively, the inventors have found that PVDF resin particles having fine and uniform particle diameters can be stably obtained by flash crystallization, and the present invention has been achieved.
- the present invention includes 75 to 99% by mass of organic solvent, 1 to 25% by mass of water, and 0.5 to 15% by mass of polyvinylidene fluoride resin with respect to 100% by mass of the total amount of the organic solvent and water.
- a step of adding polyvinylidene fluoride resin particles to a poor solvent of polyvinylidene fluoride resin to precipitate polyvinylidene fluoride resin particles (step a1) or a step of depositing polyvinylidene fluoride resin particles from the solution by flash crystallization (step a2) This is a method for producing polyvinylidene fluoride resin particles.
- step a1 and step a2 may be performed.
- step a1 and step a2 may be performed simultaneously by flash crystallization by adding the solution into a poor solvent for PVDF resin.
- PVDF resin particles having an average primary particle size of 300 nm or less, particularly 200 nm or less, which does not substantially contain a surfactant that has been difficult to obtain industrially stably can be easily and stably obtained. It can be manufactured, and widely industrially useful materials can be provided.
- PVDF resin particles obtained by the present invention include slush molding materials, rapid prototyping and rapid manufacturing materials, plastic sol paste resins, powder blocking materials, powder flowability improvers, lubricants, rubber formulations Agent, abrasive, thickener, filter agent and filter aid, gelling agent, flocculant, paint additive, oil absorbent, release agent, plastic film / sheet slipperiness improver, anti-blocking agent, gloss Modifiers, matte finishes, light diffusing agents, surface high hardness improvers, binder materials, adhesives, coating agents, valves and caps for semiconductor and liquid crystal manufacturing equipment, guide rails, rollers, bolts, linings, toughness improvers, etc.
- modifiers spacers for liquid crystal display devices, chromatographic fillers, fragrance / pesticide retention agents, chemical reaction catalysts and Carrier, gas adsorbent, sintered material for ceramic processing, standard particles for measurement and analysis, particles for food industry, powder coating material, toner for electrophotographic development, adhesive for lithium secondary battery separator, etc. Can be suitably used.
- PVDF resin in the present specification refers to a resin obtained by polymerizing vinylidene fluoride, which is represented by the following general formula (1).
- PVDF resins Commercially available products can be used as the PVDF resin.
- Specific examples of commercially available PVDF resins include KF polymers W # 1100, # 1300, # 1700, # 7200, # 7300, # 8500, # 9100, # 9200, # 9300 (manufactured by Kureha Co., Ltd.), Kyner 721, 741, 761, 461, 301F, HSV900, Kyner Flex 2851, 2801, 2821 (manufactured by Arkema Co., Ltd.), Solef 1013, 1015, 21216, 31508, 6020 (manufactured by Solvay Specialty Polymers Japan Co., Ltd.), a reagent manufactured by Sigma Aldrich Japan LLC.
- the PVDF resin may be a homopolymer of polyvinylidene fluoride, or may be a copolymer with other monomer components not containing polyvinylidene fluoride as long as the characteristics of the PVDF resin are not impaired.
- examples of other monomer components that do not contain polyvinylidene fluoride include hydrocarbon vinyl monomers such as ethylene, propylene, isobutene, and butadiene, ethylene fluoride, ethylene trifluoride, and tetrafluoroethylene.
- Fluorine vinyl monomers such as methyl acrylate, ethyl acrylate, butyl acrylate, methyl methacrylate, ethyl methacrylate, butyl methacrylate, methyl maleate, ethyl maleate, butyl maleate, 2-carboxyethyl acrylate Containing carboxyl ester groups such as 2-carboxyethyl melacrylate, acryloyloxyethyl succinic acid, methacryloyloxyethyl succinic acid, acryloyloxyethyl phthalic acid, methacryloyloxyethyl phthalic acid, trifluoromethyl acrylic acid, etc.
- Monomer Copolymerization with monomers containing carboxyl groups such as acrylic acid, methacrylic acid, maleic acid, monomethyl maleate, vinyl acetate and its saponified products, vinyl propionate and its saponified products, vinyl butyrate and its saponified products It may be a coalescence.
- acrylic acid, methacrylic acid, maleic acid, monomethyl maleate and the like are more preferable, and maleic acid, monomethyl maleate and the like are particularly preferable.
- the copolymerization amount of such a copolymer may be in a range that does not impair the properties of the PVDF resin, but is 30 mol% or less, preferably 25 mol% or less, when the total of the structural units is 100 mol%. More preferably, it is 20 mol% or less, More preferably, it is 10 mol% or less, Especially preferably, it is 5 mol% or less.
- the lower limit of the weight average molecular weight of the PVDF resin is 1,000 or more, preferably 5,000 or more, more preferably 10,000 or more, still more preferably 50,000 or more, particularly preferably 100,000 or more.
- the PVDF resin has a weight average molecular weight of 10,000,000 or less, preferably 5,000,000 or less, and more preferably 3,000,000 or less.
- the weight average molecular weight of the PVDF resin in this specification refers to the weight average molecular weight measured by gel permeation chromatography (GPC) using dimethylformamide as a solvent and converted to polystyrene.
- PVDF resin examples include those produced by a conventionally known method such as emulsion polymerization, precipitation polymerization, suspension polymerization, and the like, but those produced by precipitation polymerization, particularly from the viewpoint of suppressing the amount of surfactant used. preferable.
- the form of the PVDF resin is not particularly limited, but specific examples include powders, granules and pellets. From the viewpoint of shortening the operability described below and the time required for dissolution, powdered PVDF resin is particularly preferred.
- the PVDF resin particle in this embodiment can manufacture the PVDF resin solution containing the organic solvent mixed with water and water through any of the following (a1 process) or (a2 process) processes.
- Step a1 Step of adding PVDF resin solution to a poor solvent substantially free of surfactant to precipitate PVDF resin particles
- Step a2 Step of precipitating PVDF resin particles by flash crystallization of a PVDF resin solution in a poor solvent substantially free of surfactant
- PVDF resin is dissolved in an organic solvent.
- a powder PVDF resin not containing inorganic ions may be used in order to prevent corrosion of the device due to coexisting inorganic ions. Particularly preferred.
- the organic solvent used for dissolving the PVDF resin may be any solvent that dissolves the PVDF resin and can be mixed with water.
- N-alkylpyrrolidones such as N-methyl-2-pyrrolidinone (hereinafter sometimes abbreviated as NMP), 1,3-dimethyl-2-imidazolidinone (hereinafter also abbreviated as DMI).
- a chain amide solvent such as N, N-dimethylacetamide (hereinafter sometimes abbreviated as DMAc), N, N-dimethylformamide (hereinafter also abbreviated as DMF), dimethyl From among sulfoxides (hereinafter sometimes abbreviated as DMSO), polar sulfur solvents such as dimethylsulfone and tetramethylenesulfone, ketone solvents such as acetone and methylethylketone, and nitrile solvents such as acetonitrile and propionitrile.
- the solvent chosen at least 1 type is mentioned.
- NMP, DMI, acetone, methyl ethyl ketone, and acetonitrile are preferable, and NMP and acetonitrile are more preferable because of the stability of the solvent and ease of industrial handling.
- the oxygen gas concentration in the dissolution tank atmosphere it is preferable to lower the oxygen gas concentration in the dissolution tank atmosphere, and it is preferable to dispose the dissolution tank in an inert gas atmosphere.
- the inert gas include nitrogen gas, carbon dioxide gas, helium gas, and argon gas.
- nitrogen gas, argon gas, and carbon dioxide gas are preferable, and particularly preferable.
- Nitrogen gas or argon gas is used.
- the dissolution method is not particularly limited, when making a PVDF resin solution, PVDF resin, an organic solvent and water are put into a predetermined container and dissolved while stirring. If not dissolved at room temperature, dissolve by heating. *
- water After dissolving PVDF resin in an organic solvent, water may be added.
- a PVDF resin solution is prepared in a predetermined container, and then water is added to the PVDF resin solution.
- a liquid feed pump, Komagome pipette, etc. can be used, but if a large amount of water is added at once, PVDF resin will precipitate and it will take a long time to dissolve the PVDF resin. It is preferable.
- the PVDF resin is completely dissolved in a solvent and then added to a poor solvent, or is precipitated by flash crystallization, but there is an undissolved PVDF resin. May be.
- the amount of water to be added varies depending on the concentration of the PVDF resin to be dissolved and the type of the organic solvent, but is 0.5 to 40% by mass, preferably 1 to 25% by mass of the organic solvent mass. If the amount of water is too small, irregular shaped particles are generated, and if the amount of water is too large, PVDF resin is precipitated.
- the dissolution temperature varies depending on the type of solvent used and the concentration of PVDF resin, but is usually from room temperature to 200 ° C., preferably from room temperature to 100 ° C., or below the boiling point of the organic solvent.
- the dissolution time varies depending on the type of solvent, the concentration of the PVDF resin, and the dissolution temperature, but is usually in the range of 5 minutes to 50 hours, and preferably in the range of 10 minutes to 40 hours.
- the amount of PVDF resin used when adding a PVDF resin solution to a poor solvent for PVDF resin that does not contain a surfactant is usually 15 parts by mass of PVDF resin relative to a total of 100 parts by mass of organic solvent, water and PVDF resin. Part or less, preferably 0.1 part by mass or more and 10 parts by mass or less.
- the PVDF resin solution is subjected to a precipitation step described later.
- Step a1 the PVDF resin solution is added to the poor solvent of the PVDF resin particles not containing the surfactant to precipitate the PVDF resin particles.
- the PVDF resin solution When adding the PVDF resin solution to the poor solvent of the PVDF resin, the PVDF resin solution is continuously poured from the container containing the PVDF resin solution into the container containing the poor solvent of the PVDF resin (hereinafter sometimes referred to as “receiving tank”). Or may be dripped. Further, the PVDF resin solution may be added from above the poor solvent via the gas phase, but it is preferable to directly add the PVDF resin solution into the poor solvent from the viewpoint of obtaining fine particles having a uniform particle size.
- the PVDF resin and the poor solvent are brought into contact with each other to produce PVDF resin particles.
- the granulated liquid is extracted, and the next step is taken.
- a method batch method
- a continuous flow method sometimes abbreviated simply as a continuous method.
- the reactor used for the continuous flow type includes a continuous tank reactor (continuous tank reactor, abbreviated as CSTR) and a tube reactor (plug flow reactor, abbreviated as PFR). Any reactor can be applied to the granulation of PVDF resin.
- a poor solvent is placed in a receiving tank (sometimes referred to as a reactor in a continuous type), a PVDF resin solution is added to produce PVDF resin particles, and then the PVDF resin solution is added to the micronized solution. And a poor solvent are dropped simultaneously, the PVDF resin granulated liquid is continuously extracted from the receiving tank, and is continuously granulated. Moreover, the PVDF resin solution and the poor solvent can be simultaneously dropped into the PVDF resin particleized solution prepared by a batch method, and the particleized solution of the PVDF resin can be continuously extracted from the receiving tank. .
- the ratio of the PVDF resin solution dropping rate to the dropping rate of the poor solvent is not particularly limited as long as PVDF resin particles can be produced. From the viewpoint of productivity, the dropping rate ratio of the poor solvent to the PVDF resin solution dropping rate is 0.1. It is preferably between ⁇ 100, more preferably between 0.2 and 50.
- the residence time is not particularly limited as long as fine and uniform particles are obtained. Is preferably between 1 second and 10 hours, more preferably between 1 minute and 1 hour.
- a mixing device may be installed in the receiving tank in order to maintain the uniformity of the granulated liquid.
- the mixing device include a stirring blade, a biaxial mixer, a homogenizer, and ultrasonic irradiation.
- the PVDF resin solution and the poor solvent are passed through the pipe at a constant speed, and the PVDF resin solution and the poor solvent are mixed in the pipe to form particles, and the particleized liquid is continuously taken out.
- Various pipes can be used in the method. For example, when two pipes are used, the PVDF resin solution can be passed through the inner tube and the poor solvent through the outer tube at a constant speed, and the PVDF resin solution and the poor solvent can be mixed in the outer tube to form particles. . Further, the PVDF resin solution may be passed through the outer tube and the poor solvent may be passed through the inner tube.
- a poor solvent is passed from a direction of 90 degrees with respect to the flow of the PVDF resin solution, and the PVDF resin solution and the poor solvent are brought into contact with each other. It can also be made into particles.
- the PFR method is not limited to the above.
- the PVDF resin solution flow rate and the poor solvent flow rate are not particularly limited as long as PVDF resin particles can be generated. From the viewpoint of productivity, the PVDF resin solution flow rate with respect to the poor solvent flow rate is not limited.
- the speed ratio is preferably between 0.1 and 100, more preferably between 0.2 and 50.
- the PVDF resin solution and the poor solvent may be mixed only by piping or a tubular mixing device may be installed.
- the tubular mixing device include a tubular mixing device in which a static mixing structure such as the above-described mixing device or static mixer is stored.
- the mixing time of the PVDF resin solution and the poor solvent may be within the same range as the above residence time.
- the inner diameter of the pipe is not particularly limited as long as the PVDF resin solution and the poor solvent are mixed. From the viewpoint of productivity, it is preferably between 0.1 mm and 1 m, and more preferably between 1 mm and 1 m. .
- the ratio of the inner pipe diameter to the outer pipe diameter is not particularly limited as long as a granulated liquid can be produced, but the outer pipe diameter / inner pipe diameter is between 1.1 and 500.
- the outer tube diameter / inner tube diameter is preferably between 1.1 and 100.
- Examples of poor solvents for PVDF resin particles include aliphatic hydrocarbon solvents such as pentane, hexane, heptane, octane, nonane and decane, and aromatics such as benzene, toluene, o-xylene, m-xylene, p-xylene and naphthalene.
- aliphatic hydrocarbon solvents such as pentane, hexane, heptane, octane, nonane and decane
- aromatics such as benzene, toluene, o-xylene, m-xylene, p-xylene and naphthalene.
- Hydrocarbon solvents such as ethyl acetate, methyl acetate, butyl acetate and butyl propionate, ether solvents such as diethyl ether, diisopropyl ether, tetrahydrofuran and dioxane, methanol, ethanol, 1-propanol and 2-propanol And alcohol solvents such as methanol, ethanol, 1-propanol and 2-propanol, water and the like are preferable, and methanol, ethanol and water are particularly preferable.
- the poor solvent of the PVDF resin is preferably a solvent that is uniformly mixed with the organic solvent used for dissolution.
- evenly mixed means that an interface does not appear even when two or more solvents are mixed and allowed to stand for one day.
- NMP, DMF, DMAc, acetone, DMSO, tetrahydrofuran, acetonitrile, methanol, ethanol, and the like can be mentioned as a solvent in which they are uniformly mixed.
- the poor solvent of the PVDF resin may be used as long as it is uniformly mixed with the organic solvent used for dissolution, or a mixture of two or more solvents may be used. From the viewpoint of obtaining fine particles having a uniform particle size, it is preferable to use a mixed solvent containing water such as a mixed solvent of water-alcohols and water-nitriles.
- the amount of the poor solvent used for the PVDF resin is not particularly limited, but can be exemplified by a range of 0.1 to 100 parts by weight, preferably 0.1 to 50 parts by weight, based on 1 part by weight of the solvent used for dissolution. More preferably, it is 0.1 to 10 parts by mass.
- the poor solvent of the PVDF resin used in the precipitation step is substantially free of a surfactant.
- the particle surfactant is not contained at all, but may be mixed so long as the effect of the present invention is not impaired.
- the mixing ratio of the surfactant should be 3% by mass or less with respect to the mass of the PVDF resin, and should be less than 1% by mass as much as possible.
- the temperature at which the PVDF resin solution is added to the poor solvent of the PVDF resin can be set to 0 ° C. or higher and lower than the boiling point of the solvent, but depending on the solvent used, particles are fused with each other, and particles cannot be obtained. In some cases, the temperature immediately before the addition is preferably 0 to 40 ° C.
- PVDF resin particles are precipitated from the PVDF resin solution, and a dispersed or suspended liquid of PVDF resin particles is obtained.
- step a2 the dissolved PVDF resin solution is flash-crystallized to deposit PVDF resin particles.
- Flash crystallization refers to a method of rapidly solidifying and crystallizing a PVDF resin solution, and more specifically, heating, pressurization, or the above solution under pressure, of the organic solvent used for dissolution. Below the boiling point (may be room temperature or less) or under a pressurized pressure (may be under reduced pressure), or within another container (hereinafter sometimes referred to as a receiving tank) under a pressurized pressure (may be under reduced pressure) The liquid is ejected through a nozzle, transferred, and crystallized.
- PVDF resin solution from a container held under pressure under heating or pressurization to a receiving tank under atmospheric pressure (or under reduced pressure).
- a pressure resistant container such as an autoclave
- the inside of the container is pressurized by a self-made pressure by heating (may be further pressurized with an inert gas such as nitrogen).
- an inert gas such as nitrogen
- the amount of the poor solvent used for the PVDF resin is not particularly limited, but can be exemplified by a range of 0.1 to 100 parts by weight, preferably 0.2 to 50 parts by weight with respect to 1 part by weight of the solvent used for dissolution. More preferably, it is 0.3 to 10 parts by mass.
- a method of performing flash crystallization in one stage or a method of performing flash crystallization in multiple stages in a vessel having a lower pressure than the inside of a tank containing a solution can be employed.
- the melting step when heated and dissolved in a pressure-resistant vessel such as an autoclave, the inside of the vessel is pressurized by a self-made pressure by heating (even if further pressurized with an inert gas such as nitrogen) Good).
- the pressurized solution is flushed toward an atmospheric pressure receiving tank containing a poor solvent for PVDF resin, or flushed toward a receiving tank under reduced pressure.
- the dissolved solution pressurized to an arbitrary pressure is flushed toward an atmospheric pressure receiving tank containing a poor solvent of PVDF resin. Or flush towards a receiving tank under reduced pressure.
- the pressure (gauge pressure) of the solution for flash crystallization is preferably 0.2 to 4 MPa. It is preferable to perform flash crystallization of the solution in this environment toward a receiving tank under atmospheric pressure.
- the temperature of the receiving tank varies depending on the poor solvent of the PVDF resin to be placed in the receiving tank, but the temperature at which the poor solvent of the PVDF resin does not solidify is 50 to 50 ° C. Specifically, in the case of water, the temperature immediately before flash crystallization is 0 to 50 ° C. preferable.
- the connecting pipe outlet from the dissolution tank is put in the atmosphere of the receiving tank or in a poor solvent of PVDF resin and flash crystallization is performed. Since resin particles are obtained, it is preferable.
- the PVDF resin particles obtained by the precipitation step (a1 step) and (a2 step) can be obtained in the state of a dispersion or suspension.
- the dispersion or suspension in this state may be referred to as a flush liquid.
- coarse particles such as undissolved portion of the charged PVDF resin are included, it can be removed by filtration or the like.
- fine particles having a uniform particle size can be stably produced without containing a surfactant.
- PVDF resin particles As a method for isolating the PVDF resin particles, it can be performed by a conventionally known solid-liquid separation method such as filtration, centrifugation, centrifugal filtration, etc., but fine PVDF resin particles having an average primary particle size of 300 nm or less are used. In order to isolate efficiently by solid-liquid separation operation, it is desirable to increase the apparent particle size by aggregation and then perform solid-liquid separation operations such as filtration and centrifugation. As a method for increasing the apparent particle size by agglomeration, a method of agglomeration by heating, an agglutination method using an aggregating agent such as salting out, and the like can be used. Is preferable because an aggregate can be obtained in a short time. The average particle size of the aggregates at this time is preferably 5 to 100 ⁇ m.
- an inorganic salt such as sodium chloride is added by adding 0.01 to 1000 parts by mass, preferably about 0.05 to 500 parts by mass with respect to 1 part by mass of PVDF resin particles. Aggregates having a large diameter can be obtained.
- a method such as adding an inorganic salt directly to the dispersion or suspension, or adding a 0.1 to 20 parts by mass solution of the inorganic salt can be used.
- Inorganic salts include sodium chloride, magnesium chloride, calcium chloride, lithium chloride, potassium chloride, sodium acetate, magnesium acetate, calcium acetate, sodium oxalate, magnesium oxalate, calcium oxalate, sodium citrate, magnesium citrate, citric acid
- inorganic salts such as calcium acid.
- water is preferable.
- the amount of the inorganic salt added to the particles is preferably 0.05 parts by mass or more with respect to 1 part by mass of the PVDF resin particles and less than or equal to the saturated dissolution amount in the poor solvent in which the PVDF resin particles are precipitated.
- the PVDF resin particles obtained by the method of the present embodiment are easily solid-liquid separated by agglomerating by such a method.
- Examples of the solid-liquid separation method include methods such as filtration and centrifugation.
- a membrane filter filtration or centrifugation
- a filter cloth filtration, centrifugation
- the opening of the filter is appropriately determined according to the particle size of the PVDF resin particles to be obtained.
- a membrane filter it is usually about 0.1 to 50 ⁇ m, and in the case of a filter cloth, the air permeability at 124.5 Pa. 5 cm 3 / cm 2 ⁇ sec or less can be used.
- the PVDF resin particles thus obtained can be used as they are, or dispersed in a desired solvent to form a dispersion, or re-dispersed in another medium to form a composite, which can be used for various applications.
- the PVDF resin particles thus obtained are particles having an average primary particle size substantially not containing a surfactant of 300 nm or less, and more preferably 200 nm or less.
- the lower limit is about 30 nm.
- particles having a uniform particle size are obtained, and the coefficient of variation is usually 40% or less, in a preferred embodiment, 30% or less, in a more preferred embodiment, 20% or less, and in a more preferred embodiment, 18% or less.
- PVDF resin particles of 15% or less are obtained.
- the average primary particle size of the PVDF resin fine particles is determined by measuring the maximum length of 100 particles randomly selected from a scanning electron micrograph and calculating the arithmetic average thereof.
- the coefficient of variation (CV) indicating the uniformity of the particle size of the PVDF resin particles in the present embodiment is obtained from the data measured when calculating the average primary particle size according to the following formulas (1) to (3). Asked.
- the PVDF resin particles may be solid or hollow, but are preferably solid from the viewpoint of industrial use. Moreover, it can confirm that the PVDF resin particle of this embodiment is solid by observation of fine particle cross section of a transmission electron microscope.
- the feature of the PVDF resin particles in the present embodiment is that they have an average primary particle size of submicron size, a narrow particle size distribution, and a small amount of surfactant.
- PVDF resin particles By using such PVDF resin particles, it is possible to apply densely to a film, a porous film, a mold surface, etc., and by using this densely applied state, it is uniform. In addition, a thin adhesive film can be formed. Since there is little surfactant contained in the PVDF resin particles, the adhesive strength of the adhesive film is increased, which is industrially useful.
- the PVDF resin particles produced by the method of this embodiment can be used extremely usefully and practically in various industrial applications.
- additives for toners, rheology modifiers such as paints, medical diagnostic inspection agents, mechanical property improvers for molded products such as automobile materials and building materials, mechanical property improvers such as films and fibers
- Raw materials for resin moldings such as rapid prototyping and rapid manufacturing, flash molding materials, paste resins for plastic sols, powder blocking materials, powder flowability improvers, lubricants, rubber compounding agents, abrasives, increases Sticky agent, filter agent and filter aid, gelling agent, flocculant, paint additive, oil absorbent, mold release agent, plastic film / sheet slipperiness improver, anti-blocking agent, gloss control agent, matte finish agent , Light diffusing agent, surface high hardness improver, various modifiers such as toughness improver, liquid crystal display spacer, chromatographic filler, cosmetic foundation Base materials and additives, auxiliary agents for microcapsules, medical materials such as drug delivery systems
- the average primary particle size of the PVDF resin particles in the present embodiment is 100 particles randomly selected from images obtained with a scanning electron microscope JEOL JMS-6700F manufactured by JEOL Ltd., and the maximum length is taken as the particle size. The particle size was measured, and the average value was taken as the average primary particle size.
- the coefficient of variation (CV) of the PVDF resin particles in this embodiment is the individual particle size obtained by measuring any 100 particle sizes from an image obtained with a scanning electron microscope JEOL JMS-6700F manufactured by JEOL. Using the above values, the above formulas (1) to (3) were used.
- Apparatus LC-10A series manufactured by Shimadzu Corporation Column: GF-7MHQ x 2 manufactured by Showa Denko KK Mobile phase: Dimethylformamide Flow rate: 1.0 ml / min Detection: Differential refractometer Column temperature: 40 ° C
- Example 1 7.8 g of PVDF resin produced by Sigma-Aldrich LLC was dissolved in 534 g of NMP (Mitsubishi Chemical Corporation) at 80 ° C., and 66 g of water was added to the solution to prepare a PVDF resin solution.
- the above solution at 80 ° C. was continuously added to a granulation tank (receiving tank) of 600 g of water at 80 ° C.
- 7.8 g of 10% by mass magnesium acetate aqueous solution was added to the mixed solution, the PVDF resin particles were aggregated, filtered through a membrane filter and washed with water to obtain a wet wet cake of PVDF resin particles.
- SEM scanning electron microscope
- Example 2 9 g of PVDF resin manufactured by Sigma-Aldrich LLC was dissolved in NMP (Mitsubishi Chemical Corporation) 510 g at 80 ° C., and 90 g of water was added to the solution to prepare a PVDF resin solution.
- the said solution of 80 degreeC was continuously added to the granulation tank of 600 g of normal temperature water.
- 9 g of a 10% by mass magnesium acetate aqueous solution was added to the mixed solution, the PVDF resin particles were aggregated, filtered through a membrane filter, and washed with water to obtain a wet wet cake of PVDF resin particles.
- SEM scanning electron microscope
- Example 3 12 g of PVDF resin manufactured by Sigma-Aldrich LLC was dissolved in 534 g of NMP (Mitsubishi Chemical Corporation) at 80 ° C., and 66 g of water was added to the solution to prepare a PVDF resin solution.
- the above solution at 80 ° C. was continuously added to a granulation tank of 600 g of water at 80 ° C.
- 12 g of a 10% by mass magnesium acetate aqueous solution was added to the mixed solution to aggregate the PVDF resin particles. Filtration with a membrane filter and washing with water gave a wet wet cake of PVDF resin particles. When the cake was observed with a scanning electron microscope (SEM), the average primary particle size was 99 nm and the coefficient of variation was 15.4%.
- SEM scanning electron microscope
- Example 4 12 g of PVDF resin manufactured by Sigma-Aldrich LLC was dissolved in 534 g of NMP (Mitsubishi Chemical Corporation) at 80 ° C., and 66 g of water was added to the solution to prepare a PVDF resin solution.
- the said solution of 80 degreeC was continuously added to the granulation tank of 600 g of normal temperature water.
- 12 g of a 10% by mass magnesium acetate aqueous solution was added to the mixed solution to agglomerate the PVDF resin particles, and the membrane was filtered and washed with water to obtain a wet wet cake of PVDF resin particles.
- SEM scanning electron microscope
- Example 5 18 g of PVDF resin manufactured by Sigma-Aldrich LLC was dissolved in NMP (manufactured by Kanto Chemical Co., Ltd.) 510 g at 80 ° C., and 90 g of water was added to the solution to prepare a PVDF resin solution.
- the above solution at 80 ° C. was continuously added to a granulation tank of 600 g of water at 80 ° C.
- 18 g of a 10% by mass magnesium acetate aqueous solution was added to the mixed solution, the PVDF resin particles were aggregated, filtered through a membrane filter, and washed with water to obtain a wet wet cake of PVDF resin particles.
- SEM scanning electron microscope
- Example 6 6 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) was dissolved in 540 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) at 80 ° C., and 60 g of water was added to the solution to prepare a PVDF resin solution. The said solution of 76 degreeC was continuously added to the granulation tank of 600 g of normal temperature water. 6 g of a 10% by mass magnesium acetate aqueous solution was added to the mixed solution, the PVDF resin particles were aggregated, filtered through a membrane filter, and washed with water to obtain a wet wet cake of PVDF resin particles. When the cake was observed with a scanning electron microscope (SEM), the average primary particle size was 103 nm and the coefficient of variation was 18.1%. The results are shown in Table 1.
- Example 7 6 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) was dissolved in 540 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) at 80 ° C., and 60 g of water was added to the solution to prepare a PVDF resin solution.
- the said solution of 76 degreeC was dripped at the granulation tank which consists of a mixed solution of 540g of normal temperature methanol and 60g of water. 6 g of a 10% by mass magnesium acetate aqueous solution was added to the mixed solution, the PVDF resin particles were aggregated, filtered through a membrane filter, and washed with water to obtain a wet wet cake of PVDF resin particles.
- SEM scanning electron microscope
- Example 8 6 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) was dissolved in 540 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) at 80 ° C., and 60 g of water was added to the solution to prepare a PVDF resin solution. The above solution at 76 ° C. was continuously added to a granulation tank composed of a mixed solution of 420 g of normal temperature methanol and 180 g of water.
- Example 9 6 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) was dissolved in 540 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) at 80 ° C., and 60 g of water was added to the solution to prepare a PVDF resin solution.
- the above solution at 76 ° C. was continuously added to a granulation tank composed of a mixed solution of 300 g of methanol at normal temperature and 300 g of water, 6 g of 10% by mass magnesium acetate aqueous solution was added to the mixture, and the PVDF resin particles were aggregated with a membrane filter. Filtration and washing were performed to obtain a wet wet cake of PVDF resin particles. When the cake was observed with a scanning electron microscope (SEM), the average primary particle size was 107 nm and the coefficient of variation was 18.5%. The results are shown in Table 1.
- Example 10 6 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) was dissolved in 540 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) at 80 ° C., and 60 g of water was added to the solution to prepare a PVDF resin solution.
- the said solution of 76 degreeC was continuously added to the granulation tank which consists of a mixed solution of 120g of normal temperature methanol and 480g of water. 6 g of a 10% by mass magnesium acetate aqueous solution was added to the mixed solution, the PVDF resin particles were aggregated, filtered through a membrane filter, and washed with water to obtain a wet wet cake of PVDF resin particles. When the cake was observed with a scanning electron microscope (SEM), the average primary particle size was 105 nm and the coefficient of variation was 18.5%. The results are shown in Table 1.
- Example 11 6 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) was dissolved in 540 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) at 80 ° C., and 60 g of water was added to the solution to prepare a PVDF resin solution. The above solution at 76 ° C. was continuously added to a granulation tank composed of a mixed solution of 30 g of acetonitrile at normal temperature and 570 g of water.
- Example 12 6 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) was dissolved in 540 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) at 80 ° C., and 60 g of water was added to the solution to prepare a PVDF resin solution.
- the said solution of 76 degreeC was continuously added to the granulation tank of 300 g of normal temperature water.
- 6 g of a 10% by mass magnesium acetate aqueous solution was added to the mixed solution, the PVDF resin particles were aggregated, filtered through a membrane filter, and washed with water to obtain a wet wet cake of PVDF resin particles.
- SEM scanning electron microscope
- Example 13 6 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) was dissolved in 570 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) at 80 ° C., and 30 g of water was added to the solution to prepare a PVDF resin solution.
- the said solution of 76 degreeC was continuously added to the granulation tank of 600 g of normal temperature water.
- 6 g of a 10% by mass magnesium acetate aqueous solution was added to the mixed solution, the PVDF resin particles were aggregated, filtered through a membrane filter, and washed with water to obtain a wet wet cake of PVDF resin particles.
- SEM scanning electron microscope
- Example 14 6 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) was dissolved in 582 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) at 80 ° C., and 18 g of water was added to the solution to prepare a PVDF resin solution.
- the said solution of 76 degreeC was continuously added to the granulation tank of 600 g of normal temperature water.
- 6 g of a 10% by mass magnesium acetate aqueous solution was added to the mixed solution, the PVDF resin particles were aggregated, filtered through a membrane filter, and washed with water to obtain a wet wet cake of PVDF resin particles.
- SEM scanning electron microscope
- Example 15 6 g of KF polymer # 8500 (manufactured by Kureha Co., Ltd.) was dissolved in 540 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) at 80 ° C., and 60 g of water was added to the solution to prepare a PVDF resin solution.
- the said solution of 76 degreeC was continuously added to the granulation tank of 600 g of normal temperature water.
- 6 g of a 10% by mass magnesium acetate aqueous solution was added to the mixed solution, the PVDF resin particles were aggregated, filtered through a membrane filter, and washed with water to obtain a wet wet cake of PVDF resin particles.
- SEM scanning electron microscope
- the said solution of 80 degreeC was continuously added to the granulation tank of 600 g of normal temperature water.
- 6 g of a 10% by mass magnesium acetate aqueous solution was added to the mixed solution, the PVDF resin particles were aggregated, filtered through a membrane filter, and washed with water to obtain a wet wet cake of PVDF resin particles.
- SEM scanning electron microscope
- Example 17 12 g of KF polymer # 8500 (manufactured by Kureha Co., Ltd.) was dissolved in 540 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) at 80 ° C., and 60 g of water was added to the solution to prepare a PVDF resin solution. The said solution of 76 degreeC was continuously added to the granulation tank of 600 g of normal temperature water. 12 g of a 10% by mass magnesium acetate aqueous solution was added to the mixed solution to agglomerate the PVDF resin particles, and the membrane was filtered and washed with water to obtain a wet wet cake of PVDF resin particles. When the cake was observed with a scanning electron microscope (SEM), the average primary particle size was 121 nm and the coefficient of variation was 16.3%. The results are shown in Table 1.
- Example 18 6 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) was dissolved in 540 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) at 80 ° C., and 60 g of water was added to the solution to prepare a PVDF resin solution. The said 76 degreeC solution was continuously added to the granulation tank of 300 g of normal temperature water, and the granulation liquid was obtained.
- 606 g (76 ° C.) of PVDF resin solution and 300 g of water (room temperature) prepared separately are simultaneously dropped into the granulating tank at a rate of finishing dropping in 6 minutes, so that the liquid level of the granulated liquid is maintained.
- 906 g of the granulating liquid was extracted from the bottom of the granulating tank (particulating liquid A).
- 606 g (76 ° C.) of separately prepared PVDF resin solution and 300 g of water (room temperature) are simultaneously dropped into the granulating tank at a rate of finishing dropping in 6 minutes, so that the liquid level of the granulated liquid is maintained.
- Example 19 6 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) was dissolved in 540 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) at 80 ° C., and 60 g of water was added to the solution to prepare a PVDF resin solution. The said solution of 76 degreeC was continuously added to the granulation tank of 200g of normal temperature water, and the granulation liquid was obtained.
- Example 20 8.1 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) was dissolved in 540 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) at 80 ° C., and 60 g of water was added to the solution to prepare a PVDF resin solution. The above solution at 76 ° C. was continuously added to a granulation tank of 600 g of a 5 wt% acetonitrile aqueous solution at room temperature to obtain a granulated liquid.
- Example 21 To a 1 L separable flask, 6 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) and 594 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) are added and dissolved at 80 ° C., and 66.6 g of water is added to the solution. A PVDF resin solution was prepared. A PVDF resin solution at 76 ° C. is placed on the inner tube of a double tube comprising an inner tube (inner diameter 4 mm ⁇ length 200 mm) for feeding a PVDF resin solution and an outer tube (inner diameter 9.5 mm ⁇ length 1200 mm) for water feeding.
- Example 22 To a 1 L separable flask, 6 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) and 594 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) are added and dissolved at 80 ° C., and 66.6 g of water is added to the solution. A PVDF resin solution was prepared. PVDF resin solution at 76 ° C.
- Example 23 To a 1 L separable flask, 6 g of KF polymer # 9300 (manufactured by Kureha Co., Ltd.) and 594 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) are added and dissolved at 80 ° C., and 66.6 g of water is added to the solution. A PVDF resin solution was prepared. A PVDF resin solution 600 g at 76 ° C.
- Example 24 [Dissolution process] A 1 L autoclave was equipped with a stirrer, a temperature measuring instrument, and an internal dissolved liquid extraction tube. A connecting pipe that can be opened and closed is attached to the extraction pipe. In addition, as a receiving tank for flash crystallization, a 1 L autoclave was equipped with a stirrer, a condenser, a gas vent pipe, and the other end (flash crystal precipitation port) of the connecting pipe from the dissolution tank at a position where it entered the receiving tank liquid. .
- PVDF resin manufactured by Sigma Aldrich GK
- NMP manufactured by Mitsubishi Chemical Corporation
- Example 25 [Dissolution process] A 1 L autoclave was equipped with a stirrer, a temperature measuring instrument, and an internal dissolved liquid extraction tube. A connecting pipe that can be opened and closed is attached to the extraction pipe. In addition, as a receiving tank for flash crystallization, a 1 L autoclave was equipped with a stirrer, a condenser, a gas vent pipe, and the other end (flash crystal precipitation port) of the connecting pipe from the dissolution tank at a position where it entered the receiving tank liquid. .
- PVDF resin KF polymer # 8500 manufactured by Kureha Co., Ltd. 12 g was dissolved in 540 g of NMP (Mitsubishi Chemical Corporation) in a dissolution tank, and 60 g of water was added at 80 ° C. to add a PVDF resin solution. Adjusted. The pressure was increased to 0.5 MPa with nitrogen gas.
- Example 26 [Dissolution process] A 1 L autoclave was equipped with a stirrer, a temperature measuring instrument, and an internal dissolved liquid extraction tube. A connecting pipe that can be opened and closed is attached to the extraction pipe. In addition, as a receiving tank for flash crystallization, a 1 L autoclave was equipped with a stirrer, a condenser, a gas vent pipe, and the other end (flash crystal precipitation port) of the connecting pipe from the dissolution tank at a position where it entered the receiving tank liquid. .
- PVDF resin KF polymer # 8500 manufactured by Kureha Co., Ltd. 12 g was dissolved in 540 g of acetonitrile (manufactured by Kanto Chemical Co., Ltd.) in a dissolution tank, and 60 g of water was added at 80 ° C. to add a PVDF resin solution. Adjusted. The pressure was increased to 0.5 MPa with nitrogen gas.
- a PVDF resin solution was prepared by dissolving 18 g of PVDF resin manufactured by Sigma-Aldrich GK in 600 g of NMP (manufactured by Mitsubishi Chemical Corporation) at 80 ° C. When the solution at 80 ° C. was continuously added to a granulation tank of 600 g of water at 80 ° C., a string-like material was obtained, and no particles were obtained. The results are shown in Table 1. Moreover, the image obtained by SEM observation is shown in FIG.
- polyvinylidene fluoride resin particles According to the method for producing polyvinylidene fluoride resin particles according to the present invention, it is possible to easily and stably produce PVDF resin particles having an average primary particle size of 300 nm or less, particularly 200 nm or less, substantially free of surfactant. Can provide a wide range of industrially useful materials.
Landscapes
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Processes Of Treating Macromolecular Substances (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
Description
本明細書におけるPVDF樹脂とは、フッ化ビニリデンを重合して得られる樹脂のことを指し、下記一般式(1)で表されるものをいう。
本実施態様におけるPVDF樹脂粒子は、水と混ざる有機溶媒と水を含むPVDF樹脂溶液を下記(a1工程)または(a2工程)のいずれかの工程を経て製造することができる。
(a1工程)界面活性剤を実質的に含まない貧溶媒へPVDF樹脂溶液を添加してPVDF樹脂粒子を析出させる工程
[a1工程]
a1工程では、界面活性剤を含まないPVDF樹脂粒子の貧溶媒へPVDF樹脂溶液を添加してPVDF樹脂粒子を析出させる。
a2工程では、溶解させたPVDF樹脂溶液をフラッシュ晶析してPVDF樹脂粒子を析出させる。
PVDF樹脂粒子を単離する方法としては、ろ過、遠心分離、遠心ろ過等の従来公知の固液分離方法で行うことができるが、平均1次粒径300nm以下のような微細なPVDF樹脂粒子を固液分離操作で効率よく単離するためには、凝集によって見掛け上の粒径を増大させた後、ろ過や遠心分離等の固液分離操作を行うことが望ましい。凝集によって見掛け上の粒径を増大させる方法としては、加熱することにより凝集させる方法、塩析等の凝集剤を用いた凝集法などを用いることができるが、これらの凝集法のうち、塩析を用いる方法が、短時間で凝集体を得ることができることから好ましい。このときの凝集体の平均粒径としては5~100μmであることが好ましい。
本実施態様におけるPVDF樹脂粒子の平均一次粒径は日本電子製走査型電子顕微鏡JEOL JMS-6700Fで得られた画像から無作為に選択した100個の粒子を選び、その最大長さを粒径として粒径を測長し、その平均値を平均一次粒径とした。
本実施態様におけるPVDF樹脂粒子の変動係数(CV)は、日本電子製走査型電子顕微鏡JEOL JMS-6700Fで得られた画像から任意の100個の粒径を測長して求めた粒子径の個々の値を用いて、前出の式(1)~式(3)により求めた。
PVDF樹脂の重量平均分子量は、ゲルパーミエーションクロマトグラフィー法を用い、ポリスチレンによる校正曲線と対比させて算出した。
カラム:昭和電工株式会社製 GF-7MHQ × 2本
移動相:ジメチルホルムアミド
流量 :1.0ml/min
検出 :示差屈折率計
カラム温度:40℃
日機装製レーザー回折・散乱方式粒度分布測定装置MT3300EXIIを用い、分散媒としてポリオキシエチレンクミルフェニルエーテル(商品名:ノナール912A 東邦化学工業製)の0.5質量%水溶液を用いて測定した。具体的にはマイクロトラック法によるレーザーの散乱光を解析して得られる粒子の総体積を100%として累積カーブを求め、その累積カーブが50%となる点の粒子径(メジアン径:d50)を微粒子の平均粒径とした。
シグマアルドリッチ合同会社製PVDF樹脂7.8gをNMP(三菱化学(株)社製)534gに80℃で溶解させ、その溶液に水66gを加え、PVDF樹脂溶液を作製した。80℃の前記溶液を80℃の水600gの粒子化槽(受槽)へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を7.8g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、98nm、変動係数14.9%であった。結果を表1に示す。
シグマアルドリッチ合同会社製PVDF樹脂9gをNMP(三菱化学(株)社製)510gに80℃で溶解させ、その溶液に水90gを加え、PVDF樹脂溶液を作製した。80℃の前記溶液を常温の水600gの粒子化槽へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を9g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、100nm、変動係数15.2%であった。結果を表1に示す。
シグマアルドリッチ合同会社製PVDF樹脂12gをNMP(三菱化学(株)社製)534gに80℃で溶解させ、その溶液に水66gを加え、PVDF樹脂溶液を作製した。80℃の前記溶液を80℃の水600gの粒子化槽へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を12g加え、PVDF樹脂粒子を凝集させた。メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、99nm、変動係数15.4%であった。結果を表1に示す。また、SEM観察により得られた画像を図1に示す。
シグマアルドリッチ合同会社製PVDF樹脂12gをNMP(三菱化学(株)社製)534gに80℃で溶解させ、その溶液に水66gを加え、PVDF樹脂溶液を作製した。80℃の前記溶液を常温の水600gの粒子化槽へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を12g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、102nm、変動係数15.1%であった。結果を表1に示す。
シグマアルドリッチ合同会社製PVDF樹脂18gをNMP(関東化学(株)社製)510gに80℃で溶解させ、その溶液に水90gを加え、PVDF樹脂溶液を作製した。80℃の前記溶液を80℃の水600gの粒子化槽へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を18g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、105nm、変動係数15.6%であった。結果を表1に示す。
KFポリマー#9300((株)クレハ社製)6gをアセトニトリル(関東化学(株)社製)540gに80℃で溶解させ、その溶液に水60gを加え、PVDF樹脂溶液を作製した。76℃の前記溶液を常温の水600gの粒子化槽へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を6g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、103nm、変動係数18.1%であった。結果を表1に示す。
KFポリマー#9300((株)クレハ社製)6gをアセトニトリル(関東化学(株)社製)540gに80℃で溶解させ、その溶液に水60gを加え、PVDF樹脂溶液を作製した。76℃の前記溶液を常温のメタノール540gと水60gの混合溶液からなる粒子化槽へ滴下した。その混合液に10質量%酢酸マグネシウム水溶液を6g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、97nm、変動係数14.4%であった。結果を表1に示す。
KFポリマー#9300((株)クレハ社製)6gをアセトニトリル(関東化学(株)社製)540gに80℃で溶解させ、その溶液に水60gを加え、PVDF樹脂溶液を作製した。76℃の前記溶液を常温のメタノール420gと水180gの混合溶液からなる粒子化槽へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を6g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、104nm、変動係数15.5%であった。結果を表1に示す。
KFポリマー#9300((株)クレハ社製)6gをアセトニトリル(関東化学(株)社製)540gに80℃で溶解させ、その溶液に水60gを加え、PVDF樹脂溶液を作製した。76℃の前記溶液を常温のメタノール300gと水300ggの混合溶液からなる粒子化槽へ連続添加し、その混合液に10質量%酢酸マグネシウム水溶液を6g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、107nm、変動係数18.5%であった。結果を表1に示す。
KFポリマー#9300((株)クレハ社製)6gをアセトニトリル(関東化学(株)社製)540gに80℃で溶解させ、その溶液に水60gを加え、PVDF樹脂溶液を作製した。76℃の前記溶液を常温のメタノール120gと水480gの混合溶液からなる粒子化槽へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を6g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、105nm、変動係数18.5%であった。結果を表1に示す。
KFポリマー#9300((株)クレハ社製)6gをアセトニトリル(関東化学(株)社製)540gに80℃で溶解させ、その溶液に水60gを加え、PVDF樹脂溶液を作製した。76℃の前記溶液を常温のアセトニトリル30gと水570gの混合溶液からなる粒子化槽へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を6g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、109nm、変動係数15.2%であった。結果を表1に示す。
KFポリマー#9300((株)クレハ社製)6gをアセトニトリル(関東化学(株)社製)540gに80℃で溶解させ、その溶液に水60gを加え、PVDF樹脂溶液を作製した。76℃の前記溶液を常温の水300gの粒子化槽へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を6g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、118nm、変動係数16.0%であった。結果を表1に示す。
KFポリマー#9300((株)クレハ社製)6gをアセトニトリル(関東化学(株)社製)570gに80℃で溶解させ、その溶液に水30gを加え、PVDF樹脂溶液を作製した。76℃の前記溶液を常温の水600gの粒子化槽へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を6g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、111nm、変動係数18.2%であった。結果を表1に示す。
KFポリマー#9300((株)クレハ社製)6gをアセトニトリル(関東化学(株)社製)582gに80℃で溶解させ、その溶液に水18gを加え、PVDF樹脂溶液を作製した。76℃の前記溶液を常温の水600gの粒子化槽へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を6g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、114nm、変動係数18.7%であった。結果を表1に示す。
KFポリマー#8500((株)クレハ社製)6gをアセトニトリル(関東化学(株)社製)540gに80℃で溶解させ、その溶液に水60gを加え、PVDF樹脂溶液を作製した。76℃の前記溶液を常温の水600gの粒子化槽へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を6g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、118nm、変動係数17.3%であった。結果を表1に示す。
KFポリマー#8500((株)クレハ社製)12gをNMP(三菱化学(株)社製)540gに80℃で溶解させ、その溶液に水60gを加え、PVDF樹脂溶液を作製した。80℃の前記溶液を常温の水600gの粒子化槽へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を6g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、123nm、変動係数16.6%であった。結果を表1に示す。
KFポリマー#8500((株)クレハ社製)12gをアセトニトリル(関東化学(株)社製)540gに80℃で溶解させ、その溶液に水60gを加え、PVDF樹脂溶液を作製した。76℃の前記溶液を常温の水600gの粒子化槽へ連続添加した。その混合液に10質量%酢酸マグネシウム水溶液を12g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、121nm、変動係数16.3%であった。結果を表1に示す。
KFポリマー#9300((株)クレハ社製)6gをアセトニトリル(関東化学(株)社製)540gに80℃で溶解させ、その溶液に水60gを加え、PVDF樹脂溶液を作製した。76℃の前記溶液を常温の水300gの粒子化槽へ連続添加し、粒子化液を得た。
KFポリマー#9300((株)クレハ社製)6gをアセトニトリル(関東化学(株)社製)540gに80℃で溶解させ、その溶液に水60gを加え、PVDF樹脂溶液を作製した。76℃の前記溶液を常温の水200gの粒子化槽へ連続添加し、粒子化液を得た。
KFポリマー#9300((株)クレハ社製)8.1gをアセトニトリル(関東化学(株)社製)540gに80℃で溶解させ、その溶液に水60gを加え、PVDF樹脂溶液を作製した。76℃の前記溶液を常温の5wt%アセトニトリル水溶液600gの粒子化槽へ連続添加し、粒子化液を得た。
1LのセパラブルフラスコにKFポリマー#9300((株)クレハ社製)6g、アセトニトリル(関東化学(株)社製)594gを加えて80℃で溶解させ、その溶液に水66.6gを加えてPVDF樹脂溶液を作製した。PVDF樹脂溶液送液用の内管(内径4mm×長さ200mm)と水送液用の外管(内径9.5mm×長さ1200mm)からなる二重管の内管に76℃のPVDF樹脂溶液600g、外管に常温の水600gを166.6g/分の速度で連続的に通液して外管内でPVDF樹脂溶液と水を混合させ、PVDF樹脂粒子化液を作製した。粒子化液に10質量%酢酸マグネシウム水溶液を12g加えてPVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、88nm、変動係数16.3%であった。結果を表3に示す。
1LのセパラブルフラスコにKFポリマー#9300((株)クレハ社製)6g、アセトニトリル(関東化学(株)社製)594gを加えて80℃で溶解させ、その溶液に水66.6gを加えてPVDF樹脂溶液を作製した。PVDF樹脂溶液送液用の内管(内径2mm×長さ200mm)と水送液用の外管(内径9.5mm×長さ1200mm)からなる二重管の内管に76℃のPVDF樹脂溶液600gを166.6g/分、外管に常温の水150gを41.7g/分の速度で連続的に通液して外管内でPVDF樹脂溶液と水を混合させ、PVDF樹脂粒子化液を作製した。粒子化液に10質量%酢酸マグネシウム水溶液を12g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、81nm、変動係数16.7%であった。結果を表3に示す。
1LのセパラブルフラスコにKFポリマー#9300((株)クレハ社製)6g、アセトニトリル(関東化学(株)社製)594gを加えて80℃で溶解させ、その溶液に水66.6gを加えてPVDF樹脂溶液を作製した。PVDF樹脂溶液送液用の内管(内径4mm×長さ200mm)と水送液用の外管(内径16mm×長さ1200mm)からなる二重管の内管に76℃のPVDF樹脂溶液600g、外管に常温の水600gを333g/分の速度で連続的に通液して外管内でPVDF樹脂溶液と水を混合させ、PVDF樹脂粒子化液を作製した。粒子化液に10質量%酢酸マグネシウム水溶液を12g加え、PVDF樹脂粒子を凝集させ、メンブレンフィルターでろ過、水洗し、PVDF樹脂粒子の含水ウエットケークを得た。そのケークを走査型電子顕微鏡(SEM)で観察したところ、平均1次粒径は、90nm、変動係数17.2%であった。結果を表3に示す。
[溶解工程]
1Lオートクレーブに撹拌機、温度測定器、およびインターナルの溶解液抜き出し管を装着した。抜き出し管にはバルブ開閉ができる連結管を装着した。また、フラッシュ晶析の受槽として、1Lのオートクレーブに撹拌機、コンデンサー、ガス通気管、および前記溶解槽からの連結管の他端(フラッシュ晶析出口)を受槽液の中に入る位置に装着した。
水600gを入れた受槽を攪拌し、窒素ガスを微量通気しておいた。前記溶解槽のインターナル連結管のバルブを開き、80℃のPVDF樹脂溶液を大気圧下の受槽の水(常温)の中に移液した。次いで、フラッシュ液に5質量%食塩水40gを加え、30分間撹拌し、メンブレンフィルターでろ過、洗浄してPVDF樹脂粒子のウエットケークを得た。平均一次粒径は103nm、変動係数15.6%であった。結果を表4に示す。
[溶解工程]
1Lオートクレーブに撹拌機、温度測定器、およびインターナルの溶解液抜き出し管を装着した。抜き出し管にはバルブ開閉ができる連結管を装着した。また、フラッシュ晶析の受槽として、1Lのオートクレーブに撹拌機、コンデンサー、ガス通気管、および前記溶解槽からの連結管の他端(フラッシュ晶析出口)を受槽液の中に入る位置に装着した。
水600gを入れた受槽を攪拌し、窒素ガスを微量通気しておいた。前記溶解槽のインターナル連結管のバルブを開き、80℃のPVDF樹脂溶液を大気圧下の受槽の水(常温)の中に移液した。次いで、フラッシュ液に5質量%食塩水40gを加え、30分間撹拌し、メンブレンフィルターでろ過、洗浄してPVDF樹脂粒子のウエットケークを得た。平均一次粒径は101nm、変動係数17.2%であった。結果を表4に示す。
[溶解工程]
1Lオートクレーブに撹拌機、温度測定器、およびインターナルの溶解液抜き出し管を装着した。抜き出し管にはバルブ開閉ができる連結管を装着した。また、フラッシュ晶析の受槽として、1Lのオートクレーブに撹拌機、コンデンサー、ガス通気管、および前記溶解槽からの連結管の他端(フラッシュ晶析出口)を受槽液の中に入る位置に装着した。
水600gを入れた受槽を攪拌し、窒素ガスを微量通気しておいた。前記溶解槽のインターナル連結管のバルブを開き、80℃のPVDF樹脂溶液を大気圧下の受槽の水(常温)の中に移液した。次いで、フラッシュ液に5質量%食塩水40gを加え、30分間撹拌し、メンブレンフィルターでろ過、洗浄してPVDF樹脂粒子のウエットケークを得た。平均一次粒径は105nm、変動係数16.2%であった。結果を表4に示す。
シグマアルドリッチ合同会社製PVDF樹脂18gをNMP(三菱化学(株)社製)600gに80℃で溶解させ、PVDF樹脂溶解液を作製した。80℃の前記溶液を80℃の水600gの粒子化槽へ連続添加したところ、ひも状物が得られ、粒子は得られなかった。結果を表1に示す。また、SEM観察により得られた画像を図2に示す。
KFポリマー#8500((株)クレハ社製)12gをNMP(関東化学社製)600gに80℃で溶解させ、PVDF樹脂溶液を作製した。80℃の前記溶液を常温の水600gの粒子化槽へ連続添加したところ、ひも状物が得られ、粒子は得られなかった。結果を表1に示す。
Claims (8)
- 有機溶媒と水の合計量100質量%に対し、75~99質量%の有機溶媒と1~25質量%の水と0.5~15質量%のポリフッ化ビニリデン樹脂を含む溶液をポリフッ化ビニリデン樹脂の貧溶媒に添加してポリフッ化ビニリデン樹脂粒子を析出させる工程(a1工程)、またはフラッシュ晶析により前記溶液からポリフッ化ビニリデン樹脂粒子を析出させる工程(a2工程)を実施することを特徴とするポリフッ化ビニリデン樹脂粒子の製造方法。
- a1工程およびa2工程を実施する、請求項1に記載のポリフッ化ビニリデン樹脂粒子の製造方法。
- a1工程を連続的に実施する、請求項1または2に記載のポリフッ化ビニリデン樹脂粒子の製造方法。
- 前記有機溶媒が、N-メチル-2-ピロリジノン、ジメチルホルムアミド、ジメチルアセトアミド、ジメチルスルホキシド、1,3-ジメチル-2-イミダゾリジノンおよびアセトニトリルからなる群から選ばれる少なくとも1種である、請求項1~3のいずれかに記載のポリフッ化ビニリデン樹脂粒子の製造方法。
- 前記有機溶媒が、N-メチル-2-ピロリジノンまたはアセトニトリルである、請求項4に記載のポリフッ化ビニリデン樹脂粒子の製造方法。
- 前記ポリフッ化ビニリデン樹脂の貧溶媒が、水、水とアセトニトリルの混合物、水とメタノールの混合物、水とエタノールの混合物および水とプロパノールの混合物からなる群より選ばれる少なくとも1種である、請求項1~5のいずれかに記載のポリフッ化ビニリデン樹脂粒子の製造方法。
- 平均一次粒径が30nm以上300nm未満であり、変動係数が20%以下であることを特徴とするポリフッ化ビニリデン樹脂粒子。
- 界面活性剤を実質的に含まない、請求項7に記載のポリフッ化ビニリデン樹脂粒子。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014556285A JP6007992B2 (ja) | 2013-12-03 | 2014-11-07 | ポリフッ化ビニリデン樹脂粒子、およびその製造方法 |
EP14868044.0A EP3078700B1 (en) | 2013-12-03 | 2014-11-07 | Polyvinylidene fluoride resin particles and method for producing same |
US15/039,270 US10202496B2 (en) | 2013-12-03 | 2014-11-07 | Polyvinylidene fluoride resin particles and method for producing same |
CN201480058788.XA CN105683260B (zh) | 2013-12-03 | 2014-11-07 | 聚1,1-二氟乙烯树脂粒子及其制造方法 |
KR1020167016185A KR102229321B1 (ko) | 2013-12-03 | 2014-11-07 | 폴리불화비닐리덴 수지 입자 및 그의 제조 방법 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013-250091 | 2013-12-03 | ||
JP2013250091 | 2013-12-03 | ||
JP2014131237 | 2014-06-26 | ||
JP2014-131237 | 2014-06-26 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015083489A1 true WO2015083489A1 (ja) | 2015-06-11 |
Family
ID=53273260
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2014/079541 WO2015083489A1 (ja) | 2013-12-03 | 2014-11-07 | ポリフッ化ビニリデン樹脂粒子、およびその製造方法 |
Country Status (9)
Country | Link |
---|---|
US (1) | US10202496B2 (ja) |
EP (1) | EP3078700B1 (ja) |
JP (1) | JP6007992B2 (ja) |
KR (1) | KR102229321B1 (ja) |
CN (1) | CN105683260B (ja) |
HU (1) | HUE044132T2 (ja) |
MY (1) | MY174160A (ja) |
TW (1) | TWI637011B (ja) |
WO (1) | WO2015083489A1 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016093146A1 (ja) * | 2014-12-09 | 2016-06-16 | 東レ株式会社 | 二次電池用セパレータ、二次電池用セパレータの製造方法および二次電池 |
WO2017082261A1 (ja) * | 2015-11-11 | 2017-05-18 | 帝人株式会社 | 非水系二次電池用セパレータ及び非水系二次電池 |
WO2019163525A1 (ja) * | 2018-02-23 | 2019-08-29 | ダイキン工業株式会社 | 非水系分散体 |
EP3546062A1 (en) | 2018-03-26 | 2019-10-02 | Ricoh Company, Ltd. | Method and apparatus for manufacturing resin particles |
EP3489741A4 (en) * | 2016-07-19 | 2020-02-12 | Sekisui Chemical Co., Ltd. | LIGHT CONTROL LAMINATE AND RESIN BUFFER MATERIAL FOR LIGHT CONTROL LAMINATES |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101709697B1 (ko) | 2014-12-30 | 2017-02-23 | 삼성에스디아이 주식회사 | 리튬 이차 전지용 세퍼레이터 및 이를 포함하는 리튬 이차 전지 |
KR101551757B1 (ko) | 2014-12-30 | 2015-09-10 | 삼성에스디아이 주식회사 | 다공성 내열층 조성물, 다공성 내열층을 포함하는 분리막, 상기 분리막을 이용한 전기 화학 전지, 및 상기 분리막의 제조 방법 |
KR101618681B1 (ko) * | 2014-12-30 | 2016-05-11 | 삼성에스디아이 주식회사 | 다공성 내열층 조성물, 다공성 내열층을 포함하는 분리막, 상기 분리막을 이용한 전기 화학 전지, 및 상기 분리막의 제조 방법 |
JP6512312B2 (ja) * | 2016-11-25 | 2019-05-15 | 東レ株式会社 | ポリブチレンテレフタレート樹脂粒子の製造方法およびポリブチレンテレフタレート樹脂粒子 |
KR102357941B1 (ko) * | 2018-01-29 | 2022-02-03 | 삼성에스디아이 주식회사 | 리튬이차전지용 양극 활물질, 이를 포함하는 양극, 및 이를 포함하는 리튬이차전지 |
CN117638068A (zh) * | 2022-08-30 | 2024-03-01 | 宁德时代新能源科技股份有限公司 | 粘结剂、制备方法、正极浆料、二次电池、电池模块、电池包及用电装置 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0790153A (ja) | 1993-09-20 | 1995-04-04 | Daikin Ind Ltd | ビニリデンフルオライド系重合体の水性分散液およびその製法 |
JP2003082295A (ja) | 2001-09-11 | 2003-03-19 | Dainippon Ink & Chem Inc | 粉体塗料及び塗膜形成方法 |
JP2005513223A (ja) * | 2001-12-11 | 2005-05-12 | ソルヴェイ | 溶液からのポリマーの回収方法 |
JP2009504866A (ja) * | 2005-08-19 | 2009-02-05 | ソルヴェイ(ソシエテ アノニム) | 液体媒質からのポリマーの回収方法 |
JP2011177614A (ja) | 2010-02-26 | 2011-09-15 | Kyocera Chemical Corp | 触媒担持体とその製造方法 |
JP2012025836A (ja) * | 2010-07-22 | 2012-02-09 | Daikin Industries Ltd | フッ素樹脂水性分散体および塗料組成物 |
JP2013177532A (ja) * | 2012-02-29 | 2013-09-09 | Toray Ind Inc | ポリマー微粒子の製造方法 |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5364929A (en) * | 1993-01-13 | 1994-11-15 | E. I. Du Pont De Nemours And Company | Dissolution of tetrafluoroethylene polymers at superautogenous pressure |
JPH08134441A (ja) * | 1994-11-08 | 1996-05-28 | Japan Synthetic Rubber Co Ltd | 蛍光体粒子 |
JP2002175837A (ja) * | 2000-12-06 | 2002-06-21 | Nisshinbo Ind Inc | 高分子ゲル電解質及び二次電池並びに電気二重層キャパシタ |
JP2008036202A (ja) * | 2006-08-08 | 2008-02-21 | Konica Minolta Medical & Graphic Inc | 圧電材料、超音波探触子、圧電材料の製造方法、および、超音波探触子の製造方法 |
KR101643990B1 (ko) * | 2009-11-19 | 2016-07-29 | 도레이 카부시키가이샤 | 폴리아미드이미드 수지 미립자의 제조방법, 폴리아미드이미드 수지 미립자 |
JP5618625B2 (ja) * | 2010-05-25 | 2014-11-05 | 富士フイルム株式会社 | パターン形成方法及び感活性光線性又は感放射線性樹脂組成物 |
CN105518905B (zh) * | 2013-09-10 | 2017-12-22 | 东丽株式会社 | 二次电池用隔膜及二次电池 |
JP6165036B2 (ja) * | 2013-11-27 | 2017-07-19 | 株式会社クレハ | フッ化ビニリデン系重合体水系組成物およびその用途 |
-
2014
- 2014-11-07 HU HUE14868044A patent/HUE044132T2/hu unknown
- 2014-11-07 EP EP14868044.0A patent/EP3078700B1/en active Active
- 2014-11-07 KR KR1020167016185A patent/KR102229321B1/ko active IP Right Grant
- 2014-11-07 US US15/039,270 patent/US10202496B2/en active Active
- 2014-11-07 MY MYPI2016701991A patent/MY174160A/en unknown
- 2014-11-07 JP JP2014556285A patent/JP6007992B2/ja active Active
- 2014-11-07 WO PCT/JP2014/079541 patent/WO2015083489A1/ja active Application Filing
- 2014-11-07 CN CN201480058788.XA patent/CN105683260B/zh active Active
- 2014-12-01 TW TW103141545A patent/TWI637011B/zh active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0790153A (ja) | 1993-09-20 | 1995-04-04 | Daikin Ind Ltd | ビニリデンフルオライド系重合体の水性分散液およびその製法 |
JP2003082295A (ja) | 2001-09-11 | 2003-03-19 | Dainippon Ink & Chem Inc | 粉体塗料及び塗膜形成方法 |
JP2005513223A (ja) * | 2001-12-11 | 2005-05-12 | ソルヴェイ | 溶液からのポリマーの回収方法 |
JP2009504866A (ja) * | 2005-08-19 | 2009-02-05 | ソルヴェイ(ソシエテ アノニム) | 液体媒質からのポリマーの回収方法 |
JP2011177614A (ja) | 2010-02-26 | 2011-09-15 | Kyocera Chemical Corp | 触媒担持体とその製造方法 |
JP2012025836A (ja) * | 2010-07-22 | 2012-02-09 | Daikin Industries Ltd | フッ素樹脂水性分散体および塗料組成物 |
JP2013177532A (ja) * | 2012-02-29 | 2013-09-09 | Toray Ind Inc | ポリマー微粒子の製造方法 |
Non-Patent Citations (3)
Title |
---|
"Technical trend of polymer particles", 2008, TORAY RESEARCH CENTER, INC |
See also references of EP3078700A4 |
THE JOURNAL OF THE SOCIETY OF RUBBER SCIENCE AND TECHNOLOGY, JAPAN, 2006, pages 61 |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016093146A1 (ja) * | 2014-12-09 | 2016-06-16 | 東レ株式会社 | 二次電池用セパレータ、二次電池用セパレータの製造方法および二次電池 |
WO2017082261A1 (ja) * | 2015-11-11 | 2017-05-18 | 帝人株式会社 | 非水系二次電池用セパレータ及び非水系二次電池 |
EP3489741A4 (en) * | 2016-07-19 | 2020-02-12 | Sekisui Chemical Co., Ltd. | LIGHT CONTROL LAMINATE AND RESIN BUFFER MATERIAL FOR LIGHT CONTROL LAMINATES |
WO2019163525A1 (ja) * | 2018-02-23 | 2019-08-29 | ダイキン工業株式会社 | 非水系分散体 |
EP3546062A1 (en) | 2018-03-26 | 2019-10-02 | Ricoh Company, Ltd. | Method and apparatus for manufacturing resin particles |
JP2019167506A (ja) * | 2018-03-26 | 2019-10-03 | 株式会社リコー | 樹脂微粒子の製造方法、及び樹脂微粒子の製造装置 |
US11319415B2 (en) | 2018-03-26 | 2022-05-03 | Ricoh Company, Ltd. | Method and apparatus for manufacturing resin particles |
JP7092974B2 (ja) | 2018-03-26 | 2022-06-29 | 株式会社リコー | 樹脂微粒子の製造方法、及び樹脂微粒子の製造装置 |
Also Published As
Publication number | Publication date |
---|---|
EP3078700A4 (en) | 2017-07-12 |
CN105683260B (zh) | 2018-05-01 |
EP3078700B1 (en) | 2019-04-03 |
EP3078700A1 (en) | 2016-10-12 |
JPWO2015083489A1 (ja) | 2017-03-16 |
KR102229321B1 (ko) | 2021-03-19 |
US10202496B2 (en) | 2019-02-12 |
TWI637011B (zh) | 2018-10-01 |
TW201529646A (zh) | 2015-08-01 |
US20170051116A1 (en) | 2017-02-23 |
CN105683260A (zh) | 2016-06-15 |
MY174160A (en) | 2020-03-11 |
JP6007992B2 (ja) | 2016-10-19 |
KR20160094986A (ko) | 2016-08-10 |
HUE044132T2 (hu) | 2019-09-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP6007992B2 (ja) | ポリフッ化ビニリデン樹脂粒子、およびその製造方法 | |
TWI631150B (zh) | 聚苯硫微粒子、含有其之分散液、及聚苯硫微粒子之製造方法 | |
JP5477300B2 (ja) | ポリアミドイミド樹脂微粒子の製造方法、ポリアミドイミド樹脂微粒子 | |
JP6316222B2 (ja) | 水系分散液用ポリビニルアセタール微粒子 | |
JP5904209B2 (ja) | フッ化ビニリデン樹脂微粒子の製造方法、およびフッ化ビニリデン樹脂微粒子 | |
JP6636760B2 (ja) | ポリフェニレンサルファイド微粒子 | |
TWI623556B (zh) | Ethylene-vinyl alcohol copolymer microparticles, and dispersion liquid and resin composition therewith, and method for producing the microparticles | |
CN109843987A (zh) | 含氟聚合物的粉体及其制造方法 | |
JP2016222801A (ja) | ポリフッ化ビニリデン樹脂粒子分散液、およびポリフッ化ビニリデン樹脂粒子分散液の製造方法 | |
JP5821213B2 (ja) | ポリフェニレンサルファイド樹脂微粒子分散液の製造方法 | |
JP2017197665A (ja) | ポリエーテルスルホン樹脂粒子の製造方法およびポリエーテルスルホン樹脂粒子 | |
WO2015190342A1 (ja) | ポリマー微粒子の製造方法 | |
JP6187273B2 (ja) | ポリアミドイミド樹脂微粒子分散液、およびポリアミドイミド樹脂微粒子分散液の製造方法 | |
JPWO2016171121A1 (ja) | 樹脂分散体、微粒子、及びそれらの製造方法 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ENP | Entry into the national phase |
Ref document number: 2014556285 Country of ref document: JP Kind code of ref document: A |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 14868044 Country of ref document: EP Kind code of ref document: A1 |
|
REEP | Request for entry into the european phase |
Ref document number: 2014868044 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2014868044 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 15039270 Country of ref document: US |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
ENP | Entry into the national phase |
Ref document number: 20167016185 Country of ref document: KR Kind code of ref document: A |