Metal treatment – Compositions – Heat treating
Patent
1978-04-07
1982-08-10
Kendall, Ralph S.
Metal treatment
Compositions
Heat treating
148 624, 427117, 204147, 106 1416, 106 1429, 106 1442, C23F 700
Patent
active
043436609
ABSTRACT:
This invention relates to the process of inhibiting corrosion, and to compositions employed therein, which comprises coating copper with a barrier corrosion inhibitor, such as a water insoluble sulfonate, for example a petroleum or similar sulfonate as illustrated by a metal petroleum sulfonate, which contains an agent capable of complexing with copper, such as an organic sulfur, nitrogen, or sulfur-nitrogen compound for example an organic triazole, thiazole or the like. This process is particularly effective in inhibiting the corrosion of copper buried in the earth such as occurs when copper is exposed to electrochemical forces such as when copper is employed as neutral wires wrapped around the outside of an insulated power conducting cable and buried in the earth.
REFERENCES:
patent: 3342637 (1967-09-01), Jaffe
patent: 3413227 (1968-11-01), Howard et al.
patent: 3668137 (1972-06-01), Gardner
patent: 3755610 (1973-08-01), McTigue
patent: 3966623 (1976-06-01), Krug et al.
Glass Hyman F.
Kendall Ralph S.
Petrolite Corporation
Ring Sidney B.
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