CORROSION INHIBITING METHOD BY ADDING NOVEL POLYPHOSPHATE/TRIAZOL COMPOSITION AND WATER BASE SYSTEM CONTAINING THE COMPOSITION

摘要

PURPOSE: To provide a corrosion inhibiting composition forming an improved chlorine resistant protective film on a metal, particularly the surface of copper or a copper alloy in a corrosive water enriched in a solid material, particularly containing a dissolved solid material in a high concentration. ;CONSTITUTION: The corrosion of the metal, particularly the copper surface in contact with the water base system is suppressed by using a polyphosphate in the combination of an azol such as an alkyl or alkoxy benzotriazol, a mercaptobenzothiazol, a tolyltriazol, a benzotriazol, a substituted benzotriazol and/or 1-phenyl-5-mercapto tetrazol.;COPYRIGHT: (C)1993,JPO