Use of transition metal complexes with nitrogen-containing...

C - Chemistry – Metallurgy – 11 – D

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C11D 3/39 (2006.01)

Patent

CA 2493874

Transition metal complexes are used as a bleaching catalyst for peroxy compounds. Transition metal complexes to be used according to the invention contain a polydentate ligand of the general formula (I), wherein B preferably denotes a heterocyclic or heteroaromatic member of the formula (II), in particular pyridine-2,6-diyl, R1-C=N-R4 and R2-C=N-R4 represent a heterocyclic or heteroaromatic ring or R3 and/or R4 represent a heteroaryl, aryl or heteroarylmethyl radical.

L'invention concerne des complexes de métaux de transition utilisés en tant que catalyseur décolorant pour des composés peroxy. Les complexes de métaux de transition utilisés dans cette invention contiennent un ligand polydenté représenté par la formule (I), dans cette formule, B représente, de préférence un élément hétérocyclique ou hétéroaromatique représenté par la formule (II), en particulier pyridine-2,6-diyl, R?1¿-C=N-R?4¿ et R?2¿-C=N-R?4¿représentent un noyau hétérocyclique ou hétéroaromatique ou R?3¿ et/ou R?4¿ représentent un radical hétéroaryle, aryle ou hétéroarylméthyle.

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