| 摘要 |
The present invention provides an aqueous electrode binder for a secondary battery suitable as a water-soluble binder that is included in a composition forming an electrode for secondary battery, and does not reduce adhesion and flexibility of an emulsion because a water-soluble polymer is included that has dispersibility and a viscosity control function, and that supplementary works when an electrode is formed. An aqueous electrode binder for a secondary battery includes a water-soluble polymer, wherein the water-soluble polymer includes a structural unit (a) derived from an ethylenically unsaturated carboxylic acid ester monomer in an amount of 50 to 95% by mass and a structural unit (b) derived from an ethylenically unsaturated carboxylic salt monomer in an amount of 5 to 50% by mass, based on 100% by mass of the total amount of the structural units included in the water-soluble polymer, and wherein the water-soluble polymer has a weight-average molecular weight of 500,000 or more. |
