ANTICORROSION METHOD AND ANTICORROSIVE AGENT FOR COPPER ALLOY PIPING OF SEAWATER SYSTEM

摘要

PROBLEM TO BE SOLVED: To provide an anticorrosion method and an anticorrosive agent for copper alloy piping such as an aluminum brass pipe used for a heat exchanger or a capacitor of a seawater system.;SOLUTION: Provided is a corrosion prevention method for copper alloy piping where seawater fed to copper alloy piping of a seawater system is added with at least either an aliphatic quaternary ammonium salt represented by formula (I) or N-mono-substituted alkylene diamine represented by formula (II) so as to be concentration and time effective for anticorrosion in the copper alloy piping. Also provided is an anticorrosive agent for copper alloy piping comprising at least either an aliphatic quaternary ammonium salt represented by formula (I) or N-mono-substituted alkylene diamine represented by formula (II) as an effective component.;SELECTED DRAWING: None;COPYRIGHT: (C)2018,JPO&INPIT