Preoxyacid bleach precursor compositions

Details Preoxyacid bleach precursor compositions Preoxyacid bleach precursor compositions

D - Textiles, Paper

06

L

D06L 3/02 (2006.01) C11D 3/39 (2006.01) C11D 3/395 (2006.01)

Patent

CA 2101448

2101448 9213798 PCTABS00014 Solid peroxyacid bleach precursor compositions are provided in which the external surfaces of a particulate peroxyacid precursor material is treated with from 2 % to 20 % by weight of a solid organic acid compound of Mpt > 30 ·C and an aqueous solubility of at least 5g/100g water at 20 ·C. The bleach precursor material, when so treated, perhydrolyses after 3 minutes in a standard test at 20 ·C, to at least 90 % of the extent of the untreated bleach precursor material under the same conditions. Preferred organic acid compounds are monomeric aliphatic hydroxycarboxylic and polycarboxylic acids such as citric, lactic and glycolic acids. Detergent compositions containing the treated peroxyacid bleach precursor particulates are also disclosed.

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