Oil bleaching method and composition for same
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United States of America Patent
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Apr 2, 1991
Grant Date -
N/A
app pub date -
Dec 5, 1988
filing date -
Dec 5, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention contemplates a method for treating oils having undesirable color impurities and an oil bleaching composition suitable for use in this method. The method comprises contacting the oil with the oil bleaching composition for a time period sufficient to reduce the amount of color impurities of the oil. The oil bleaching composition includes a neutral bleaching clay and a chelating polycarboxylic acid. The spent bleaching composition resists spontaneous combustion.
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