Abstract: The platability improver of the present invention comprises heterophasic-polymer particles having a coefficient of variation in particle diameter of 40%-90%. It is preferable that the proportion of polymer particles each having a particle diameter of 0.05 ?m or larger be 80% by volume or more with respect to all the heterophasic-polymer particles and the proportion of polymer particles each having a particle diameter of 0.05 ?m or larger but smaller than 0.15 ?m be 10%-60% by volume with respect to all the heterophasic-polymer particles.

Abstract: The platability improver of the present invention comprises heterophasic-polymer particles having a coefficient of variation in particle diameter of 40%-90%. It is preferable that the proportion of polymer particles each having a particle diameter of 0.05 ?m or larger be 80% by volume or more with respect to all the heterophasic-polymer particles and the proportion of polymer particles each having a particle diameter of 0.05 ?m or larger but smaller than 0.15 ?m be 10%-60% by volume with respect to all the heterophasic-polymer particles.

Abstract: An electrical storage device electrode binder composition containing a polymer (A) and a liquid medium (B). A repeating unit (A4) derived from an unsaturated carboxylic acid compound is included in the polymer (A) in an amount of 5-40 parts by mass based on 100 parts by mass of the total repeating units in polymer (A). The polymer (A) is in particle form, and the polymer particles have a surface acid content of 1-6 mmol/g.

Abstract: An electrical storage device includes a cathode, an anode, a protective film that is provided between the cathode and the anode, and an electrolyte solution, the protective film including a polymer that includes a repeating unit derived from a fluorine-containing monomer, and a repeating unit derived from an unsaturated carboxylic acid.

Abstract: An electrode binder composition that is used to produce an electrode used for an electrical storage device, includes (A) a polymer, (B) a carboxylic acid or a salt thereof, and (C) a liquid medium, and has a concentration of the carboxylic acid or a salt thereof (B) of 20 to 1000 ppm.

Abstract: An electrode binder composition that is used to produce an electrode used for an electrical storage device, includes (A) a polymer, (B) a carboxylic acid or a salt thereof, and (C) a liquid medium, and has a concentration of the carboxylic acid or a salt thereof (B) of 20 to 1000 ppm.

Abstract: An electrical storage device electrode binder composition includes a polymer (A) and a liquid medium (B), the polymer (A) including a repeating unit (A4) derived from an unsaturated carboxylic acid in an amount of 5 to 40 parts by mass based on 100 parts by mass of the total repeating units included in the polymer (A), the polymer (A) being polymer particles, and the polymer particles having a surface acid content of more than 1 mmol/g and 6 mmol/g or less.

Abstract: An electrical storage device includes a cathode, an anode, a protective film that is provided between the cathode and the anode, and an electrolyte solution, the protective film including a polymer that includes a repeating unit derived from a fluorine-containing monomer, and a repeating unit derived from an unsaturated carboxylic acid.

Abstract: A binder composition for the positive electrode of an electric storage device. The composition contains polymer alloy particles composed of: a polymer (A) having a recurring unit derived from vinylidene fluoride, ethylene tetrafluoride, propylene hexafluoride, or mixtures thereof; a polymer (B) having a recurring unit derived from an unsaturated carboxylic acid ester; and water. The average diameter of the polymer alloy particles is 50 to 400 nm. The polymer alloy particles are synthesized by absorbing a monomer (b) to the polymer (A) and polymerizing the monomer (b) to synthesize the polymer (B).

Abstract: An electrode binder composition that is used to produce an electrode used for an electrical storage device, includes (A) a polymer, (B) a carboxylic acid or a salt thereof, and (C) a liquid medium, and has a concentration of the carboxylic acid or a salt thereof (B) of 20 to 1000 ppm.

Abstract: A binder composition for the positive electrode of an electric storage device. The composition contains polymer alloy particles composed of: a polymer (A) having a recurring unit derived from vinylidene fluoride, ethylene tetrafluoride, propylene hexafluoride, or mixtures thereof; a polymer (B) having a recurring unit derived from an unsaturated carboxylic acid ester; and water. The average diameter of the polymer alloy particles is 50 to 400 nm. The polymer alloy particles are synthesized by absorbing a monomer (b) to the polymer (A) and polymerizing the monomer (b) to synthesize the polymer (B).