Abstract: The invention is related to a nonaqueous secondary battery electrode having an electrode active material layer with little crack and high peel strength to a current collector, and can reduce the internal resistance of the battery; and an electrode slurry therefor, and a nonaqueous secondary battery. The electrode active material layer of the nonaqueous secondary battery contains an electrode active material (A), a copolymer (P), a nonionic surfactant (B), and a cellulose derivative (C). A content of the nonionic surfactant (B) to 100 parts by mass of the copolymer (P) is 5.0 to 350 parts by mass, and a content of the cellulose derivative (C) is 10 to 350 parts by mass. The copolymer (P) contains a structural unit (p1) derived from a (meth)acrylic acid salt of 50 to 99% by mass and a structural unit (p2) derived from a compound represented by general formula (1) of 0.50 to 30% by mass.

Abstract: A binder for a nonaqueous battery electrode, the nonaqueous battery electrode using the binder for the nonaqueous battery electrode, and a nonaqueous battery. The binder for a nonaqueous battery electrode contains a copolymer (P) of an ethylenically unsaturated monomer (A) essentially containing a styrene-based monomer (a1) and a (meth)acrylate ester (a2), and a surfactant (B1) having an ethylenically unsaturated bond, wherein the total amount of structure units derived from the surfactant (B1) having the ethylenically unsaturated bond in the copolymer (P) and the surfactant (B2) not contained in the copolymer (P) is 0.10 to 1.00 parts by mass based on 100 parts by mass of the copolymer (P). Also disclosed is a method for producing the binder.

Abstract: The present invention provides a binder for a nonaqueous secondary battery electrode capable of greatly improving the peeling strength of an electrode active material layer to a current collector while suppressing the occurrence of cracks in the electrode active material layer formed on the current collector. The binder for a nonaqueous secondary battery electrode includes a copolymer (P) having a structural unit (a) derived from a monomer (A) represented by formula (1), a structural unit (b) derived from a monomer (B) which is at least one kind selected from the group consisting of a (meth)acrylic acid and a salt thereof, and a structural unit (c) derived from a monomer (C) which is an ethylenically unsaturated carboxylic acid ester of an aromatic alcohol.

Abstract: The invention relates to a method for producing a slurry for a nonaqueous battery electrode, a method for producing a nonaqueous battery electrode, and a method for producing a nonaqueous battery. The method for producing a slurry for a nonaqueous battery electrode includes a dispersing step of dispersing a conductive auxiliary agent in an aqueous binder composition, and a mixing step of mixing the conductive auxiliary agent-containing binder composition obtained in the dispersing step with an active material. In the conductive auxiliary agent-containing binder composition, a particle diameter at which particles begin to appear, which is measured according to a degree of dispersion by a grain gauge method, is 90 ?m or less.

Abstract: The present invention relates to a copolymer for a binder for a non-aqueous battery electrode, which ensures sufficient binding properties between active materials and between the active materials and a current collector, suppresses generation of aggregates in a slurry containing the electrode active material, suppresses generation of cracks in an electrode active material layer, and sufficiently ensures peel strength of the electrode active material layer against the current collector. The copolymer for a binder for a non-aqueous battery electrode is a copolymer (P) of a monomer mixture (M) containing a monomer (A) represented by general formula (1), a (meth)acrylic acid monomer (B), and a monomer (C) represented by general formula (2), wherein a content of a structure derived from the monomer (A) in the copolymer (P) is 0.5 to 20.0 mass % and a content of a structure derived from the monomer (C) in the copolymer (P) is 0.5 to 20.0 mass %.

Abstract: An aqueous binder composition for a secondary battery electrode containing a silane coupling agent without ethylenically unsaturated bonds, a resin which is a polymer of at least one kind of ethylenically unsaturated monomers, a resin which is a polymer of at least one kind of ethylenically unsaturated monomer, and at least one kind of solvent selected from water and a hydrophilic solvent. The amount of silane coupling agent is from 0.5 to 9 parts by mass based on 100 parts by mass of ethylenically unsaturated monomer. The pH of the composition is 2.5 to 8.0. Also disclosed is a binder obtained by curing the aqueous binder composition, a slurry containing the aqueous binder composition and an active material, a secondary battery electrode obtained by curing the slurry, and a secondary battery including the secondary battery electrode.

Abstract: A binder composition for nonaqueous battery electrodes essentially contains (A) an ethylenically unsaturated monomer and (B) a surfactant, and further satisfies any two or more conditions of the following (I) to (III): (I) (A) the ethylenically unsaturated monomer includes (a) a phosphoric acid group-containing ethylenically unsaturated monomer; (II) (B) the surfactant comprises (b) a phosphoric acid group-containing surfactant; and (III) the composition including (C) a neutralizing agent containing an alkali metal compound and/or an alkali earth metal compound.

Abstract: The invention relates to a method for producing a slurry for a nonaqueous battery electrode, a method for producing a nonaqueous battery electrode, and a method for producing a nonaqueous battery. The method for producing a slurry for a nonaqueous battery electrode includes a dispersing step of dispersing a conductive auxiliary agent in an aqueous binder composition, and a mixing step of mixing the conductive auxiliary agent-containing binder composition obtained in the dispersing step with an active material. In the conductive auxiliary agent-containing binder composition, a particle diameter at which particles begin to appear, which is measured according to a degree of dispersion by a grain gauge method, is 90 ?m or less.

Abstract: A binder for a nonaqueous battery electrode, the nonaqueous battery electrode using the binder for the nonaqueous battery electrode, and a nonaqueous battery. The binder for a nonaqueous battery electrode contains a copolymer (P) of an ethylenically unsaturated monomer (A) essentially containing a styrene-based monomer (a1) and a (meta)acrylic ester (a2), and a surfactant (B1) having an ethylenically unsaturated bond, wherein the total amount of structure units derived from the surfactant (B1) having the ethylenically unsaturated bond in the copolymer (P) and the surfactant (B2) not contained in the copolymer (P) is 0.10 to 1.00 parts by mass based on 100 parts by mass of the copolymer (P). Also disclosed is a method for producing the binder.

Abstract: An aqueous binder composition for a secondary battery electrode containing a silane coupling agent without ethylenically unsaturated bonds, a resin which is a polymer of at least one kind of ethylenically unsaturated monomers, a resin which is a polymer of at least one kind of ethylenically unsaturated monomer, and at least one kind of solvent selected from water and a hydrophilic solvent. The amount of silane coupling agent is from 0.5 to 9 parts by mass based on 100 parts by mass of ethylenically unsaturated monomer. The pH of the composition is 2.5 to 8.0. Also disclosed is a binder obtained by curing the aqueous binder composition, a slurry containing the aqueous binder composition and an active material, a secondary battery electrode obtained by curing the slurry, and a secondary battery including the secondary battery electrode.

Abstract: A binder composition for nonaqueous battery electrodes essentially contains (A) an ethylenically unsaturated monomer and (B) a surfactant, and further satisfies any two or more conditions of the following (I) to (III): (I) (A) the ethylenically unsaturated monomer includes (a) a phosphoric acid group-containing ethylenically unsaturated monomer; (II) (B) the surfactant comprises (b) a phosphoric acid group-containing surfactant; and (III) the composition including (C) a neutralizing agent containing an alkali metal compound and/or an alkali earth metal compound.

Abstract: A binder composition for nonaqueous battery electrodes is prepared by adding a small amount of an acetylene glycol compound to an aqueous polymer emulsion obtained by emulsion polymerization of a monomer mixture comprising from 15 to 70% by mass of styrene (a), from 20 to 80% by mass of an ethylenically unsaturated carboxylate (b), from 1 to 10% by mass of an ethylenically unsaturated carboxylic acid (c), from 0.1 to 5% by mass of a crosslinkable ethylenically unsaturated monomer (d), and from 0 to 20% by mass of another monoethylenically unsaturated monomer (e). When the above binder composition is used, an active material is not peeled off in the step of cutting a collector even when a small amount of the binder is used, and a nonaqueous battery excellent in a charge-discharge cycle property can be produced.

Abstract: A binder composition for nonaqueous battery electrodes is prepared by adding a small amount of an acetylene glycol compound to an aqueous polymer emulsion obtained by emulsion polymerization of a monomer mixture comprising from 15 to 70% by mass of styrene (a), from 20 to 80% by mass of an ethylenically unsaturated carboxylate (b), from 1 to 10% by mass of an ethylenically unsaturated carboxylic acid (c), from 0.1 to 5% by mass of a crosslinkable ethylenically unsaturated monomer (d), and from 0 to 20% by mass of another monoethylenically unsaturated monomer (e). When the above binder composition is used, an active material is not peeled off in the step of cutting a collector even when a small amount of the binder is used, and a nonaqueous battery excellent in a charge-discharge cycle property can be produced.

Abstract: The present invention provides a binder for lithium ion secondary battery electrodes that is obtained by emulsion polymerization of an ethylenically unsaturated monomer in an aqueous medium in the presence of a surfactant, the ethylenically unsaturated monomer being composed, with respect to the total mass of the ethylenically unsaturated monomer, of 15% by mass to 70% by mass of styrene, 1% by mass to 10% by mass of an N atom-containing ethylenically unsaturated monomer, 1% by mass to 10% by mass of an ethylenically unsaturated carboxylic acid, 0.1% by mass to 5% by mass of an internal crosslinking agent, and 22% by mass to 82.9% by mass of another ethylenically unsaturated monomer that is copolymerizable with these substances, and has a glass transition temperature of ?55° C. to 30° C.