Method of inhibiting the corrosion of copper in aqueous mediums

Details Method of inhibiting the corrosion of copper in aqueous mediums Method of inhibiting the corrosion of copper in aqueous mediums

1986-08-22

1988-05-17

Richman, Barry S.

Chemical apparatus and process disinfecting, deodorizing, preser

Process disinfecting, preserving, deodorizing, or sterilizing

Maintaining environment nondestructive to metal

252390, 422 14, C23F 1114

Patent

active

047449500

ABSTRACT:
A method of providing a durable, long lasting chemically resistant, pH tolerant, corrosion inhibiting film on the surfact of copper or copper containing metal in contact with an aggressive aqueous system is disclosed. The copper or copper containing metal generally composes a structure of dynamic cooling water system, and protection is afforded thereto by intermittently feeding to the aqueous medium a sufficient amount of a C.sub.3 to C.sub.6 alkyl substituted benzotriazole.

REFERENCES:
patent: 3985503 (1976-10-01), O'Neal
patent: 4522285 (1985-11-01), D'Errico
Derwent Abstract of Japanese 56-142873, 11-7-81.
Cotton et al., "Benzotriazole and Related Compounds as Corrosion Inhibitors for Copper", Brit. Corrosion Journal, vol. 2, Jan. 1967.
Harrison et al., "Advances in the Control of Copper and Copper Alloy Corrosion in Chlorinated Cooling Waters," Calgon Corp., 1986.

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