| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a binder resin composition for an electrode, having good environmental adaptability by using an aqueous solvent, having excellent characteristics such as heat resistance, mechanical strength, electric characteristics and solvent resistance, as an aromatic polyimide obtained from the composition shows high crystallinity, and having a low swelling degree even in a battery environment and having excellent toughness. <P>SOLUTION: The binder resin composition for an electrode is obtained by uniformly dissolving in an aqueous medium, a polyamic acid comprising a repeating unit expressed by chemical formula (1) together with imidazoles having two or more alkyl groups as substituents, the imidazoles in an amount as 0.8 times or more equivalent as carboxyl groups of the polyamic acid. In chemical formula (1), A represents a group derived from an aromatic tetracarboxylic acid; and B represents a group derived from an aromatic diamine. <P>COPYRIGHT: (C)2013,JPO&INPIT |
