COATED STEEL MATERIAL

• Main Authors: MIYAJIMA YOSHIHIRO, KAYAZONO YOSHIHISA, KATO HIROTADA
• Format: Patent
• Language: English
• Published: 24.06.1992
• Subjects: APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL; LAYERED PRODUCTS; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM; PERFORMING OPERATIONS; PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TOSURFACES, IN GENERAL; SPRAYING OR ATOMISING IN GENERAL; TRANSPORTING

PURPOSE:To obtain a coated steel material excellent in corrosion protecting property by using, as an anticorrosive coating, a coating material containing a bifunctional epoxy resin, a trifunctional epoxy resin, a silicone prepolymer, an organic titanate, a curing agent, and an inorganic pigment. CONSTITUTION:The surface of a steel material after surface preparation is coated with an anticorrosive coating. This anticorrosive coating is prepared by adding about 1-200 pts.wt. of an aminophenol type trifuctional epoxy resin, about 5-70 pts.wt. of a silicone prepolymer having a silanol group at the end of a molecular chain, and about 0.01-5 pts.wt. of an organic titanate to 100 pts.wt. of a bifunctional epoxy resin and further mixing a curing agent and an inorganic pigment. As an organic titanate, triethanolaminetitanate is preferred. As a curing agent, an amine type curing agent or a mixed curing agent consisting of dicyandiamide type curing agent and imidazole type curing agent is used. By applying the above anticorrosive paint and then curing this coating material, the coated steel material capable of holding superior hot water resistance over a long period can be obtained.