The spelter metsuki steel component null which the anticorrosive paint constituent and the said constituent for the spelter metsuki steel component coating

摘要

PURPOSE:To form the title composition which can prevent a coating film from cracking, peeling, shrinking, blistering, etc., gives a film having enhanced impermeability to water, and has a very excellent rust-preventive power for a steel part by using binder resins of a specified composition for a coating material which is applied to glavanized steel. CONSTITUTION:This coating composition contains an epoxy resin (A), a halogenated hydrocarbon elastomer (B), and a hydrocarbon elastomer (C). It is desirable that the amounts of components A, B, and C are each 5-70 pts.wt. based on 100 pts.wt. total resin solids of the paint. As the component B, a chlorinated elastomer having a degree of chlorination of at least 60wt.% is preferably used. As the component C, an acrylonitrile/butadiene copolymer and/or said copolymer partly having hydroxy-functional groups or carboxy- functional groups is preferably used.