| 摘要 |
PROBLEM TO BE SOLVED: To provide a surface treating resin composition for a separator base material for a non-aqueous electrolyte secondary battery, good in heat resistance.SOLUTION: A resin composition contains the following resin (a) and a filler particle. The resin (a) contains a structural unit represented by formula (1), and has a weight-average molecular weight in the range of 200,000 to 500,000 (however, a structural unit represented by formula (2) is not contained). In the formula (1), Mis a metal ion; and n is a valence number thereof. |
