Bleach compositions comprising metal-containing bleach...

Details Bleach compositions comprising metal-containing bleach... Bleach compositions comprising metal-containing bleach...

C - Chemistry, Metallurgy

11

D

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

Patent

CA 2187169

Laundry bleaching compositions having reduced metal-containing bleach catalyst-induced fabric damage comprising a peroxy compound selected from the group consisting of preformed organic percarboxylic acids bleaching mixtures containing a bleaching agent that is a source of hydrogen peroxide and one or more bleach activators, and mixtures thereof present in an effective amount to cause bleaching; a metal-containing bleach catalyst (preferably a manganese bleach catalyst) present in an effective amount to activate the peroxy compound: and wherein further the molar ratio of hydrogen peroxide to peracid, from the preformed organic percarboxylic acids or the bleach activator, is less than about 4:1.

Compositions de blanchiment pour le lavage du linge réduisant les dommages causés au linge par les catalyseurs contenant du métal et comprenant un composé peroxy choisi dans le groupe constitué d'acides précarboxyliques organiques préformés, de mélanges de blanchiment contenant un agent de blanchiment source de peroxyde d'hydrogène et un ou plusieurs activateurs de blanchiment, et leur mélange, en quantité suffisante pour assurer le blanchiment un catalyseur de blanchiment contenant du métal (de préférence du manganèse) en quantité suffisante pour activer le composé peroxy. Dans ces compositions, le rapport molaire du peroxyde d'hydrogène au peracide provenant d'acides précarboxyliques organiques préformés ou de l'activateur de blanchiment est inférieur à environ 4:1.

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