Abstract: Provided are a binder solution, an electrode mixture, an electrode, and an all-solid-state battery, which use an organic solvent having low reactivity with a solid electrolyte and in which a binder easily dissolves. The binder solution for an all-solid-state battery contains: a binder made of a vinylidene fluoride polymer; and an organic solvent. The organic solvent is at least one selected from the group consisting of a cyclic ether, a ketone, and an ester. The organic solvent has a boiling point of 60° C. or higher and 160° C. or lower. A residual moisture content of the organic solvent is 300 ppm or less.

Abstract: An objective is to provide a vinylidene fluoride polymer composition that is difficult to swell and dissolve in N-methyl-2-pyrrolidone and can form an electrode with a smooth surface. The vinylidene fluoride polymer composition contains a vinylidene fluoride polymer with a melting point of 130° C. or higher. When the vinylidene fluoride polymer composition and N-methyl-2-pyrrolidone are mixed to prepare a vinylidene fluoride polymer dispersion with a content of the vinylidene fluoride polymer of 6 mass %, a ratio of a viscosity of the vinylidene fluoride polymer dispersion at 30° C. to a viscosity of N-methyl-2-pyrrolidone at 30° C. is 20 or less, and when the vinylidene fluoride polymer dispersion is stirred and then allowed to stand for 15 minutes, a rate of change in content of the vinylidene fluoride polymer in an upper 40 volume % area of the vinylidene fluoride polymer dispersion before and after the standing is 2 mass % or less.

Abstract: The present invention provides a binder composition which suppresses a swelling ratio in an electrolyte solution while having sufficient peel strength. The binder composition according to the present invention contains a copolymer including monomer units derived from vinylidene fluoride, a fluorine-containing alkyl vinyl compound, and a crosslinkable monomer; the content of the monomer unit derived from the fluorine-containing alkyl vinyl compound in the copolymer being not less than 2 mass % and less than 10 mass %; and the content of the monomer unit derived from the crosslinkable monomer being less than 5 mass %.

Abstract: The present invention provides a binder composition which suppresses a swelling ratio in an electrolyte solution while having sufficient peel strength. The binder composition according to the present invention contains a copolymer including monomer units derived from vinylidene fluoride, a fluorine-containing alkyl vinyl compound, and a crosslinkable monomer; the content of the monomer unit derived from the fluorine-containing alkyl vinyl compound in the copolymer being not less than 2 mass % and less than 10 mass %; and the content of the monomer unit derived from the crosslinkable monomer being less than 5 mass %.

Abstract: An object of the present invention is to provide a structure for a non-aqueous electrolyte secondary battery that can be manufactured without going through a complicated process such as passing through a poor solvent. The structure for a non-aqueous electrolyte secondary battery of the present invention comprises a positive electrode, a separator, and a negative electrode, the structure comprising an intermediate layer formed between the positive electrode and the separator and/or between the negative electrode and the separator and including vinylidene fluoride polymer particles constituting 60 to 100 parts by mass per 100 parts by mass of raw materials that constitute the intermediate layer.

Abstract: An object of the present invention is to provide a filler-containing resin film in which shedding of inorganic materials or the like is suppressed, a resin composition that can be used in production of the filler-containing resin film, and a method for producing the filler-containing resin film. The filler-containing resin film of the present invention is a filler-containing resin film comprising: a vinylidene fluoride copolymer obtained by copolymerizing vinylidene fluoride and a compound represented by formula (1) (in formula (1), R1, R2, and R3 are each independently hydrogen atoms, chlorine atoms, or alkyl groups having from 1 to 5 carbons; and X? is an atomic group having a molecular weight of 472 or less and having a main chain configured from 1 to 19 atoms); and an insulating inorganic filler. The resin film is produced by applying onto a substrate and then drying a resin composition containing the vinylidene fluoride copolymer, the insulating inorganic filler, and an organic solvent.

Abstract: An object of the present invention is to provide a filler-containing resin film in which shedding of inorganic materials or the like is suppressed, a resin composition that can be used in production of the filler-containing resin film, and a method for producing the filler-containing resin film. The filler-containing resin film of the present invention is a filler-containing resin film comprising: a vinylidene fluoride copolymer obtained by copolymerizing vinylidene fluoride and a compound represented by formula (1) (in formula (1), R1, R2, and R3 are each independently hydrogen atoms, chlorine atoms, or alkyl groups having from 1 to 5 carbons; and X? is an atomic group having a molecular weight of 472 or less and having a main chain configured from 1 to 19 atoms); and an insulating inorganic filler. The resin film is produced by applying onto a substrate and then drying a resin composition containing the vinylidene fluoride copolymer, the insulating inorganic filler, and an organic solvent.

Abstract: Provided are a structure for non-aqueous electrolyte secondary batteries in which at least one of a cathode with a separator and an anode with a separator are strongly adhered, an aqueous latex used to obtain the structure for non-aqueous electrolyte secondary batteries, and a separator/intermediate layer laminate.

Abstract: To provide a method of melt-molding a vinylidene fluoride resin, in which the melt molding can be performed at a lower temperature. A composition is melt-molded at a shear rate of 1 s?1 to 600 s?1, where the composition contains a vinylidene fluoride resin having a weight average molecular weight of 250,000 to 450,000 and polyethylene having a melt flow rate of 0.04 g/10 min to 40 g/10 min, and an amount of the polyethylene being from 0.1 parts by mass to 5.0 parts by mass per 100 parts by mass of the vinylidene fluoride resin.

Abstract: Provided are vinylidene fluoride copolymers exhibiting higher adhesion with respect to metal foils than do conventional vinylidene fluoride copolymers, and to provide uses of the vinylidene fluoride copolymers. The vinylidene fluoride copolymers are obtained by copolymerizing vinylidene fluoride with a compound represented by Formula (A). In Formula (A), R1, R2 and R3 are each independently a hydrogen atom, a chlorine atom or an alkyl group; and X is an atomic group with a molecular weight of not more than 500 containing a heteroatom and having a main chain composed of 1 to 20 atoms, or is a heteroatom.

Abstract: An object of the present invention is to provide a method for producing a resin film for a non-aqueous electrolyte secondary battery that does not inhibit the movement of ions such as lithium ions and that is arranged between a separator and a positive or negative electrode; and a resin film for a non-aqueous electrolyte secondary battery obtained by the production method. The method for producing a resin film for a non-aqueous electrolyte secondary battery comprises the steps of: coating a separator with a resin composition containing a solvent and a vinylidene fluoride copolymer obtained by copolymerizing vinylidene fluoride and a compound represented by formula (1) below (coating step); and drying the separator on which the resin composition has been coated (drying step).

Abstract: An object of the present invention is to provide an aqueous vinylidene fluoride-based polymer composition capable of providing a mixture for a non-aqueous electrolyte secondary battery exhibiting excellent adhesive strength with a current collector, wherein the aqueous vinylidene fluoride-based polymer composition of the present invention comprises a vinylidene fluoride-based polymer and water; the vinylidene fluoride-based polymer exhibits a multi-modal scattering intensity distribution in dynamic light scattering; the vinylidene fluoride-based polymer comprises a component A having a particle size of not greater than 1 ?m in a scattering intensity distribution and a component B having a particle size exceeding 1 ?m; the D50 of component A is from 0.02 to 0.5 ?m; the D50 of component B is from 1.1 to 50 ?m; and the integrated value of a scattering intensity distribution frequency in a particle size range of from 1.0 to 1000.0 nm is in a range of from 70.0 to 98.7%.

Abstract: An object of the present invention is to provide a structure for a non-aqueous electrolyte secondary battery that can be manufactured without going through a complicated process such as passing through a poor solvent. The structure for a non-aqueous electrolyte secondary battery of the present invention comprises a positive electrode, a separator, and a negative electrode, the structure comprising an intermediate layer formed between the positive electrode and the separator and/or between the negative electrode and the separator and including vinylidene fluoride polymer particles constituting 60 to 100 parts by mass per 100 parts by mass of raw materials that constitute the intermediate layer.

Abstract: Provided is a vinylidene fluoride polymer powder exhibiting excellent solubility in aprotic polar solvents, and a vinylidene fluoride polymer solution obtained from the powder and an aprotic polar solvent. The vinylidene fluoride polymer powder has an NMP penetration rate of 12 to 100% as measured by an NMP penetration test.

Abstract: A positive electrode mixture for nonaqueous batteries, is formed by adding 0.5 to 10 wt. parts of an organic acid per 100 wt. parts of an electroconductive additive, to a mixture of a composite metal oxide as a positive electrode active substance, a higher order-structured carbon black as the electroconductive additive, a binder of a fluorine-containing copolymer of at least three comonomers including vinylidene fluoride, tetrafluoroethylene and a flexibility-improving fluorine-containing monomer, and an organic solvent. Further, the mixture is applied on at least one side of an electroconductive sheet, and then dried and compressed to form a positive electrode mixture layer. As a result, it is possible to provide a positive electrode structure having a thick and sound positive electrode mixture layer of a high energy density.

Abstract: An object of the present invention is to provide a molded article obtained by melt molding a vinylidene fluoride-based copolymer having excellent adhesion with other thermoplastic resins as well as improved molding characteristics and discoloration resistance. The molded article of the present invention is obtained by melt molding a vinylidene fluoride-based copolymer obtained by copolymerizing vinylidene fluoride and a compound represented by formula (1) below. In the formula, R1, R2 and R3 are each independently a hydrogen atom, a chlorine atom or an alkyl group having from 1 to 5 carbon atoms, and X? is an atomic group having a molecular weight not greater than 472, the main chain of which is constructed of from 1 to 19 atoms.

Abstract: An object of the present invention is to provide a method for producing a resin film for a non-aqueous electrolyte secondary battery that does not inhibit the movement of ions such as lithium ions and that is arranged between a separator and a positive or negative electrode; and a resin film for a non-aqueous electrolyte secondary battery obtained by the production method. The method for producing a resin film for a non-aqueous electrolyte secondary battery comprises the steps of: coating a separator with a resin composition containing a solvent and a vinylidene fluoride copolymer obtained by copolymerizing vinylidene fluoride and a compound represented by formula (1) below (coating step); and drying the separator on which the resin composition has been coated (drying step).

Abstract: An object of the present invention is to provide a filler-containing resin film in which shedding of inorganic materials or the like is suppressed, a resin composition that can be used in production of the filler-containing resin film, and a method for producing the filler-containing resin film. The filler-containing resin film of the present invention is a filler-containing resin film comprising: a vinylidene fluoride copolymer obtained by copolymerizing vinylidene fluoride and a compound represented by formula (1) (in formula (1), R1, R2, and R3 are each independently hydrogen atoms, chlorine atoms, or alkyl groups having from 1 to 5 carbons; and X? is an atomic group having a molecular weight of 472 or less and having a main chain configured from 1 to 19 atoms); and an insulating inorganic filler. The resin film is produced by applying onto a substrate and then drying a resin composition containing the vinylidene fluoride copolymer, the insulating inorganic filler, and an organic solvent.

Abstract: The present invention relates to a process for producing a vinylidene fluoride polymer solution, which involves dissolving heat-treated vinylidene fluoride polymer powder into an aprotic polar solvent. The heat-treated vinylidene fluoride polymer powder is obtained by heat treating raw vinylidene fluoride polymer powder at such a temperature that the temperature of the vinylidene fluoride polymer powder is not less than 125° C. to less than a crystal melting temperature (Tm) of the polymer.

Abstract: A slurry for a positive electrode for a sulfide-based solid-state battery contains at least a fluorine-based copolymer containing vinylidene fluoride monomer units, a positive electrode active material, and a solvent or a dispersion medium. When a dry volume of the slurry is set to 100% by volume, a content ratio of the fluorine-based copolymer is 1.5 to 10% by volume.