Patent ID: 9147882
Filing Date: 2015-09-29
Classification: C08F,H01M,Y02E

Abstract:
1. A binder for a lithium ion secondary battery electrode, being obtained by emulsion polymerization of ethylenically unsaturated monomers containing, as essential constituents, 15 to 70 mass % of styrene with respect to the total mass of ethylenically unsaturated monomers, 0.1 to 5 mass % of an ethylenically unsaturated carboxylic acid ester having a polar group with respect to the total mass of ethylenically unsaturated monomers, an ethylenically unsaturated carboxylic acid, another ethylenically unsaturated carboxylic acid ester, and an internal cross-linking agent in the presence of a surfactant, and having a glass transition temperature of 30° C. or lower.