EPOXY POWDER COATING COMPOSITION FOR COATING OF OUTER SURFACE OF CAST IRON PIPE AND OUTER SURFACE-COATED CAST IRON PIPE

摘要

PROBLEM TO BE SOLVED: To obtain an epoxy powder coating composition for coating of the outer surface of a cast iron pipe capable of preventing any exfoliations and swells in the damaged or defective sections of the coating and excellent in safety to human and the environment, and to provide the outer surface-coated cast iron pipes. ;SOLUTION: This composition comprises (A) a bisphenol A type epoxy resin having a melting point of 75 to 128°C and epoxy equivalent of 600 to 2,200 g/eq, (B) a setting agent of a composition of the formula ((m) is an integer of 1 to 4) having a mean phenolic hydroxyl equivalent of 200 to 800 g/eq, (C) at least one of imidazole-based and imidazoline-based setting-accelerators, and (D) a burnt plaster.;COPYRIGHT: (C)1999,JPO