AQUEOUS FLUORORESIN DISPERSION AND COATING FILM OBTAINED THEREFROM, AND ITS MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide an aqueous fluororesin dispersion which makes it possible to form a under layer simultaneously with the application of a fluororesin and which has high heat resistance so that the under layer with good adherence to a substrate can be formed even under high-temperature conditions, to provide a fluororesin coating film obtained therefrom, and its manufacturing method. SOLUTION: The aqueous fluororesin dispersion comprises a dispersion of fluororesin particles in water and contains 2-60 mass% of a specified salt comprising e.g. a salt of a diamine and a tetracarboxylic acid or its diester derivative, dissolved therein.