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.
申请公布号
US5151211(A)
申请公布日期
1992.09.29
申请号
US19910679265
申请日期
1991.04.02
申请人
OIL-DRI CORPORATION OF AMERICA
发明人
BROOKE, DAVID D.;BROPHY, SHIRLEY A.;GOSS, GEORGE R.