AQUEOUS VINYLIDENE FLUORIDE-BASED POLYMER COMPOSITION AND USE THEREOF

摘要

The purpose of the present invention is to provide an aqueous vinylidene fluoride-based polymer composition which can provide a mixture that is for use in a nonaqueous electrolyte secondary battery and that exhibits excellent bond strength to a current collector. This aqueous vinylidene fluoride-based polymer composition comprises both a vinylidene fluoride-based polymer and water, wherein: the vinylidene fluoride-based polymer exhibits a multi-modal scattered light intensity distribution in dynamic light scattering; the vinylidene fluoride-based polymer comprises a component (A) which exhibits particle diameters of 1μm or less in the scattered light intensity distribution and a component (B) which exhibits particle diameters exceeding 1μm therein; the D50 of the component (A) is 0.02 to 0.5μm, while the D50 of the component (B) is 1.1 to 50μm; and in the scattered light intensity distribution, the integrated frequency in a particle diameter range of 1.0 to 1000.0nm is 70.0 to 98.7%.