BISPHENOLIC RESIN, ELECTRODE, LEAD STORAGE BATTERY, METHOD OF PRODUCING THESE, AND RESIN COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a bisphenolic resin which can provide an excellent cycle characteristic of a lead storage battery.SOLUTION: A bisphenolic resin is obtained by reacting (a) a bisphenolic compound, (b) at least one selected from the group consisting of aminonaphthalenesulfonic acid and aminonaphthalenesulfonic acid derivatives, and (c) at least one selected from the group consisting of formaldehyde and formaldehyde derivatives.