Method of anticorrosive treatment for soft water boilers
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United States of America Patent
Stats
-
Dec 5, 1989
Grant Date -
N/A
app pub date -
Oct 15, 1987
filing date -
Oct 17, 1986
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method of anticorrosive treatment for soft water boilers to prevent iron family metals from corrosion, especially from pitting corrosion, which is characterized by adding, to a boiler water system using soft water at a high temperature, (a) a specific amount of a phosphorus compound, (b) a specific amount of a carboxylic acid compound and (c) a specific amount of a metal compound.
First Claim
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