Method for cleaning an oil-coated substrate
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United States of America Patent
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Jun 3, 1997
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app pub date -
Mar 17, 1994
filing date -
Dec 22, 1993
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Abstract
A method for cleaning oil-contaminated substrates employing a composition composed of a diluent oil, a first surfactant having a HLB value of at least 10, and a second surfactant having a higher HLB value. The difference in the HLB values of the first and second surfactants is at least 3 and a mixture of the surfactants would have a HLB value of at least 11.
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