USE OF TRANSITIONAL METAL COMPLEXES FOR THE FARMING OF KERATED PHASES

摘要

The invention relates to the use of transitional metal (III) complexes of the formula (I), in which UM represents manganese, iron, cobalt, ruthenium, molybdenum or vanadium; R represents an alkylene-, alkenylene-, phenylene- or cycloalkylen- rest which in addition to the substituent X can possibly be substituted with alkyl- and/or aryl-, with a total of between 1 and 12 C atoms, whereby within R the shortest distance between the N-atoms complexing with UM is between 1 and 5 C atoms; X represents -H, -OR3, -NO2, -F, -Cl, -Br or -J; R1, R2 and R3 independently of each other represent hydrogen or an alkyl rest with between 1 and 4 C atoms; Y1 and Y2 independently of each other represent hydrogen or an electron displacing substituent; Z1 and Z2 independently of each other represent hydrogen, -CO2M, -SO3M, -NO2, -CH3, -C2H5, -C3H7, -CH2OH or -CHO; M represents hydrogen or an alkali metal such as lithium, sodium or potassium; and A represents a charge-balancing anion ligand. According to the invention, use of the above complexes allows for a marked reduction in the quantity of oxidizing agent in oxidation dyes. In addition, oxidation dyes can be formulated as oxidizing agents using atmospheric oxygen.