PHOTOCURABLE COMPOSITION, COATING COMPOSITION FOR TEMPORARY RUST PREVENTION OF STEEL PIPE, ITS COATING FILM, COATED STEEL PIPE, AND METHOD FOR RUST PREVENTION OF STEEL PIPE

摘要

PROBLEM TO BE SOLVED: To obtain a composition for a temporary anticorrosive coating for a steel pipe having excellent balance between anticorrosive performances exhibited by salt water corrosion performance and an alkali solubility in a film removal with an alkali, to provide a method-for rust prevention and to obtain a steel pipe coated with the composition.;SOLUTION: The composition for a temporary anticorrosive coating for a steel pipe using a photocurable composition comprising (A) a photocurable (meth)acrylate resin, (B) a carboxy group-containing monofunctional (meth) acrylate monomer, (C) a phosphate (meth)acrylate compound, (D) a bifunctional (meth)acrylate monomer, (E) a trifunctional or polyfunctional (meth)acrylate monomer and (F) a photopolymerization initiator has excellent salt water corrosion performance without reducing alkali solubility.;COPYRIGHT: (C)2002,JPO