FORMATION OF WATER-REPELLENT COATING FILM

摘要

PURPOSE:To obtain a compsn. for forming a water-repellent coating film to be applied on an aluminum heat exchanger and to provide a film forming method capable of preventing the stagnation of water drops, excellent in corrosion resistance without generating malodor. CONSTITUTION:In this forming method of a water-repellent coating film, a thermosetting compsn. for overcoating is applied on a base coating film having 20-80% gel fraction cured by crosslinking. The thermosetting compsn. for overcoating contains 100 pts.wt. of a fluorine-contg. thermally crosslinking and thermosetting resin compsn. having >=10wt.% fluorine element and 40-200 pts.wt. of granular material having <=5mum average particle size.