Enhanced cleaning procedure for copper alloy equipment
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United States of America Patent
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Aug 29, 1989
Issued Date -
N/A
app pub date -
Nov 9, 1988
filing date -
Dec 12, 1986
priority date (Note) -
Expired
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Abstract
There is disclosed a method and additive to be employed in said method whereby the fouling of metal surfaces with copper deposits resulting from acid cleaning of copper alloy surfaces, be they all of the same metallurgy or merely elements with in the overall system is markedly reduced by adding to the rinse or flush formulations commonly employed following an acid treatment, a chelating agent for copper, and, subsequently adding a copper corrosion inhibitor to the conventional neutralization fluid.
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