Alkaline sensitive metal cleaning composition, method for cleaning an alkaline sensitive metal surface, and washing facility

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United States of America Patent

PATENT NO 6686325
APP PUB NO 20030176305A1
SERIAL NO

10099535

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Abstract

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An alkaline sensitive metal cleaning composition is provided. The alkaline sensitive metal cleaning composition contains an alkaline concentrate and a corrosion inhibitor concentrate. The alkaline concentrate includes a source of alkalinity in an amount sufficient to provide a use solution having a pH of at least 10.0, and a first chelant component that exhibits soil removal properties when used at a pH of at least 10.0. The corrosion inhibitor concentrate includes a corrosion inhibitor component for reducing corrosion of alkaline sensitive metals when used in a use solution having a pH of at least 10.0, a second chelant component for stabilizing the corrosion inhibitor in the corrosion inhibitor concentrate when the corrosion inhibitor concentrate is provided at a pH that is less than 8.0, and a surfactant component for providing cleaning properties when used at a pH of at least 10.0. A threshold inhibitor/crystal modifier can be provided in at least one of the alkaline concentrate and the corrosion inhibitor concentrate to stabilize the corrosion inhibitor in a use solution at a pH of at least 10.0. A method for cleaning an alkaline sensitive metal surface and a washing facility are provided.

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Patent Owner(s)

Patent OwnerAddress
ZEP IP HOLDING LLC1310 SEABOARD INDUSTRIAL BOULEVARD ATLANTA GA 30318

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Besse, Michael E Golden Valley, MN 85 2033
Hoyt, Jerry D Hastings, MN 19 416
Klos, Terry J Victoria, MN 45 1236
Levitt, Mark St. Paul, MN 50 688
Ruhr, Richard O Buffalo, MN 13 348

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