COMPOSITION FOR NON-AQUEOUS SECONDARY BATTERY FUNCTIONAL LAYER, FUNCTIONAL LAYER FOR NON-AQUEOUS SECONDARY BATTERY, NON-AQUEOUS SECONDARY BATTERY, AND METHOD OF PRODUCING ELECTRODE FOR NON-AQUEOUS SECONDARY BATTERY

Provided is a composition for a non-aqueous secondary battery functional layer capable of forming a functional layer for a non-aqueous secondary battery that has excellent adhesiveness after immersion in electrolyte solution and can cause a non-aqueous secondary battery to display excellent cycle characteristics and output characteristics. The composition for a non-aqueous secondary battery functional layer contains organic particles and a binder for a functional layer. The organic particles have an electrolyte solution elution amount of at least 0.001 mass % and not more than 5.0 mass %.