Cleaning with controlled release of acid
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United States of America Patent
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Jan 1, 2013
Grant Date -
Oct 21, 2010
app pub date -
Apr 16, 2009
filing date -
Apr 16, 2009
priority date (Note) -
Expired
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Abstract
The present invention discloses a method for cleaning a substrate comprising contacting the substrate in a cleaning cycle with an aqueous cleaning solution comprising an aqueous diluent and a detergent composition, the detergent composition comprising a glycolic and/or lactic acid oligomer with an average degree of polymerization between 1.8 and 6. Preferably, the substrate is contacted in a rinse cycle with an aqueous rinse which is substantially free of an intentionally added rinse agent or fabric softener.
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