METHOD FOR FORMING COATING FILM

摘要

PROBLEM TO BE SOLVED: To provide a method for forming a coating film which exhibits hydrophilicity from the beginning when a film is formed and, simultaneously, excels in water resistance and exhibits sufficient abrasion resistance even under severe conditions such as exposure to hot water. SOLUTION: This method of forming a coating film comprises coating a coating composition comprising (A) a tetrafunctional alkoxysilane represented by the formula: Si (OR) or its partial hydrolyzate, (B) an inorganic filler, and (C) a tri-or di-functional alkoxysilane represented by the formula: R1(CH3)mSi(0 R2) at a weight ratio in terms of solids content of component (B) to the sum of components (A) and (B) of 0.1-3.0 on a substrate and curing the coated film at a baking temperature of 250-350 deg.C to form a film.