| abstract |
(57) [Problem] To provide excellent adhesion to a base material such as a polymer or a metal plate, and to impart hydrophilicity to the surface of the base material, as well as excellent heat resistance, to improve hydrophilicity to a nonwoven fabric, In addition to being used as a battery separator treatment agent, it can also be used as a filter for capturing ionic substances such as ammonia, and can also be used as a binder resin, coating material, surface treatment agent, Provides emulsions that can be applied to various uses such as surface modifiers. SOLUTION: An emulsion of a sulfonic acid group-containing polymer obtained by sulfonating a hydrogenated product of a copolymer containing an aromatic monomer unit and a diene monomer unit and emulsifying the same in water. |