Layered solid corrosion inhibitors for use in corrodible devices for automatic addition to coolant systems
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United States of America Patent
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Feb 5, 1985
Grant Date -
N/A
app pub date -
Jan 3, 1983
filing date -
Jan 3, 1983
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A solid anhydrous composition comprising a surface layer formed of a caustic compound and a second layer formed of a corrosion inhibiting compound for use in a corrodible container in a device for the automatic addition of corrosion inhibitors to coolant systems. Where corrosive water is present in the coolant system in contact with the corrodible portion of the container, perforation of the corrodible portion allows penetration of coolant into the container, forming a highly corrosive alkaline solution in the area of perforation, quickly destroying the remaining corrodible portion and allowing rapid disolution and dispersion of the solid corrosion inhibitor.
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