process for the preparation of salts perossigenati dry mixed..stabili mixtures detergents

摘要

Processes for the preparation of mixed persalts capable of liberating hydrogen peroxide in aqueous solutions and stable in dry detergent compositions, which processes comprise adding 60-80% H2O2 containing 0.6-1.8% EDTA to sodium carbonate monohydrate or to a sodium carbonate hydrate containing from 75-90% sodium carbonate, wherein sodium or potassium sulfate, sodium or potassium pyrophosphate, sodium metasilicate, sodium disilicate, sodium citrate, sodium glucoheptonate, sodium perborate, anhydrous sodium carbonate, potassium carbonate, or mixed sodium and potassium carbonate or a mixture thereof is added to the reaction mixture, together with the products produced and use thereof as oxidizing agents in detergent mixtures.