| 摘要 |
PURPOSE: A laundry pretreatment process and bleaching compositions are provided, which are characterized in that a liquid composition comprising both aliphatic diacyl peroxide and a second peroxygen bleach exhibits improved stain removal performance on a variety of stains/soils under pretreatment conditions, i.e., when a liquid bleaching composition is applied directly onto the soiled fabrics, and left to act onto the fabrics before they are washed, while delivering excellent bleaching performance. CONSTITUTION: The liquid bleaching composition suitable for pretreating fabrics, which has a pH of from 0 to 6 and is comprising from 0.05% to 10% by weight of the total composition of an aliphatic diacyl peroxide having the general formula R-C(O)-O-O-(O)C-R1, wherein R and R1 can be the same or different and are linear or branched aliphatic groups having from 6 to 20 carbon atoms, and from 0.01% to 10% by weight of the total composition of a second peroxygen bleach or mixtures thereof is preferably applied as the following methods of being remained in contact with at least a portion of fabric for a period of time of 1 minute to 1 hour before fabric is washed.
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