Process for Producing Non-Aqueous Battery Electrode-Forming Binder Solutions, and Non-Aqueous Battery Electrode-Forming Binder Solution

摘要

Provided is a process for producing non-aqueous battery electrode-forming binder solutions which includes a step of performing filtration with a filtration accuracy that enables suppressing of the occurrence of internal short circuits (shorts) in non-aqueous batteries such as lithium ion secondary batteries. The process includes a step (A) of filtering a polymer solution of a vinylidene fluoride resin in an organic solvent through a filter membrane (a) that is made of a polyolefin resin and has an initial filtration efficiency of not less than 99.9% for a filtering particle size of 20μm.