Bleach activation

B - Operations – Transporting – 01 – J

Patent

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Details

B01J 31/16 (2006.01) B01J 31/18 (2006.01) B01J 31/32 (2006.01) C11D 3/39 (2006.01) C11D 3/395 (2006.01) D06L 3/02 (2006.01)

Patent

CA 2042736

Novel bleach and oxidation catalysts, a method of bleaching substrates using these catalysts and bleaching (detergent) compositions containing the catalysts are reported. The catalysts are manganese complexes of formula: [LnTmmXp]2Yq wherein Tm is manganese or iron or mixtures thereof, which can be in the II, III, IV or V oxidation state or mixtures thereof; n and m are independent integers from 1-4; X represents a co-ordination or bridging species; p is an integer from 0-12; Y is a counter-ion, the type of which is dependent upon the charge z of the complex which can be positive, zero or negative; q = z/[charge Y]; and L is a ligand being a macrocyclic organic molecule.

Nouveaux catalyseurs de blanchiment et d'oxydation; méthode pour blanchir des substrats à l'aide de ces catalyseurs; compositions (détergentes) de blanchiment, renfermant les catalyseurs. Les catalyseurs sont des complexes du manganèse de formule ¢LnTmmXp!2Yq, où Tm est du manganèse ou du fer ou un mélange des deux; ils peuvent être à un état d'oxydation II, III, IV ou V, ou présenter un mélange de ces états; n et m sont indépendamment des entiers de 1 à 4; X représente une espèce de coordination ou de pontage; p est un entier de 0 à 12; Y est un ion opposé, qui dépend de la charge z du complexe, laquelle peut être positive, nulle ou négative; q = z/¢charge Y!; enfin L est un ligand, soit une molécule organique macrocyclique.

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