Invention Application
- Patent Title: ALKALINE SENSITIVE METAL CLEANING COMPOSITION, METHOD FOR CLEANING AN ALKALINE SENSITIVE METAL SURFACE, AND WASHING FACILITY
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Application No.: PCT/US2003/006655Application Date: 2003-03-05
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Publication No.: WO2003078691A3Publication Date: 2003-09-25
- Inventor: HOYT, Jerry, D. , BESSE, Michael, E. , KLOS, Terry, J. , LEVITT, Mark , RUHR, Richard, O.
- Applicant: ECOLAB INC.
- Applicant Address: Ecolab Center, Saint Paul, MN 55102 US
- Assignee: ECOLAB INC.
- Current Assignee: ECOLAB INC.
- Current Assignee Address: Ecolab Center, Saint Paul, MN 55102 US
- Agency: SORENSEN, Andrew, D.
- Priority: US10/099,535 20020315
- Main IPC: C23G1/22
- IPC: C23G1/22
Abstract:
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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