Bleach activation by an iron catalyst comprising a...

Details Bleach activation by an iron catalyst comprising a... Bleach activation by an iron catalyst comprising a...

C - Chemistry, Metallurgy

11

D

C11D 3/39 (2006.01) B01J 31/16 (2006.01) B01J 31/18 (2006.01)

Patent

CA 2257891

A bleach and oxidation catalyst is provided comprising a catalytically active metal complex having a poly-dentate ligand containing at least 6 hetero atoms. Such metal complexes can activate hydrogen peroxide, peroxy acids or molecular oxygen and were found to have both favourable stain removal and remarkable dye transfer inhibition properties. In addition, these complexes can be easily prepared.

L'invention concerne un catalyseur de blanchiment et d'oxydation. Ce catalyseur comprend un complexe métallique présentant une activité catalytique, et possédant un ligand polydenté contenant au moins 6 hétéroatomes. Ces complexes métalliques peuvent activer le peroxyde d'hydrogène, les peroxyacides ou l'oxygène moléculaire et présentent de bonnes propriétés de détachage et d'inhibition de transfert des colorants. En outre, ces complexes sont faciles à préparer.

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