| abstract |
The invention relates to bleaching agents with a pH value greater than 7, which contain a mixture of at least two constituents A and B as the alkalisation agent instead of ammonia, where A is selected from special imidazole derivatives and B is selected from at least one alkanolamine, in particular from the group containing monoethanolamine, monoisopropanolamine, 2-amino-2-methyl-propanol, 2-amino-2-methyl-1,3-propanediol, 2-amino-2-ethyl-1,3-propanediol and 2-amino-2-methylbutanol. Said bleaching agents have an improved bleaching action and increased stability. The agents permit excellent bleaching results to be achieved without an unpleasant odour of ammonia during the bleaching process. |