Cleaning and corrosion inhibition system and composition for surfaces of aluminum or colored metals and alloys thereof under alkaline conditions
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United States of America Patent
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Jul 24, 2012
Grant Date -
Mar 15, 2012
app pub date -
Nov 17, 2011
filing date -
Mar 23, 2004
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to corrosion inhibitor systems, in particular to cleaning and corrosion inhibiting compositions for surfaces of aluminum or colored metals and alloys thereof under alkaline conditions, especially in the food and pharmaceutical industries. The cleaning and corrosion inhibiting compositions comprise as a corrosion inhibitor at least one alkyleneoxy alkylphosphate di- or triester having the general formula
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