Method of inhibiting the corrosion of copper in aqueous systems

Method of inhibiting the corrosion of copper in aqueous systems

A method of providing a durable, corrosion inhibiting film on the surface of copper or copper-containing metal in contact with a dynamic, aggressive aqueous system having a pH substantially neutral to alkaline which comprises adding in a non-continuous manner a sufficient amount for the purpose of a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
1. Verfasser: HOLLANDER, ORIN
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
ADHESIVES
CHEMICAL SURFACE TREATMENT
CHEMISTRY
COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
COATING MATERIAL WITH METALLIC MATERIAL
COATING METALLIC MATERIAL
DIFFUSION TREATMENT OF METALLIC MATERIAL
DYES
INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL
MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
NATURAL RESINS
NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE
PAINTS
POLISHES
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Beschreibung
Zusammenfassung:A method of providing a durable, corrosion inhibiting film on the surface of copper or copper-containing metal in contact with a dynamic, aggressive aqueous system having a pH substantially neutral to alkaline which comprises adding in a non-continuous manner a sufficient amount for the purpose of an alkyl benzotriazole having the formula: wherein R is a C3 to C6 linear alkyl, and permitting contact of the benzotriazole for a time sufficient to provide the film and thereafter discontinuing the feed of the benzotriazole and permitting any residual benzotriazole in the aqueous system to deplete.