Bleach catalyst particles

Details Bleach catalyst particles Bleach catalyst particles

C - Chemistry, Metallurgy

11

D

C11D 3/39 (2006.01) C11D 3/60 (2006.01) C11D 17/00 (2006.01) C11D 17/06 (2006.01)

Patent

CA 2236466

The present invention relates to bleach catalyst-containing composite particles suitable for incorporation into granular detergent compositions, said composite particles comprising: (a) from about 1 % to about 60 % of bleach catalyst (preferably a cobalt catalyst); and (b) from about 40 % to about 99 % of carrier material that melts within the range of from about 38 ° C to about 77 ° C (preferably selected from the group consisting of polyethylene glycols, paraffin waxes, and mixtures thereof), and to processes for making these particles. These particles are particularly useful components of detergent compositions, such as laundry detergent compositions, hard surface cleaners, and especially automatic dishwashing detergent compositions.

L'invention concerne des particules composites contenant un catalyseur de blanchiment utilisables comme ingrédients de compositions détergentes granulaires. Ces particules composites contiennent: (a) de 1 % environ à 60 % environ d'un catalyseur de blanchiment (de préférence un catalyseur au cobalt); et (b) de 40 % environ à 99 % environ d'un véhicule qui fond dans la plage allant de 38 DEG C environ à 77 DEG C environ (choisi de préférence parmi les polyéthylène glycols, les cires paraffiniques et leurs mélanges). L'invention concerne également un procédé pour fabriquer ces particules. Ces particules sont particulièrement utiles comme ingrédients de compositions détergentes telles que les compositions pour la lessive, les détergents pour les surfaces dures et surtout les détergents pour lave-vaisselle.

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