| abstract |
A binder composition for a porous film for a secondary battery comprising polycarboxylic acid and water, wherein the polycarboxylic acid contains 20 mass% or more and 50 mass% or less of a carboxylic acid group-containing monomer unit, and the polycarboxylic acid has a pH of 6.5 Binder composition for secondary battery porous membranes whose water-insoluble and pH is water-soluble below 8 or more, and the pH of the said binder composition for secondary battery porous membranes is 6.5 or less; And the slurry for secondary battery porous films using the same, the porous film for secondary batteries, and a secondary battery. |