0001 The present invention relates to a process for the simple purification of an active substance and / or a mixture of active substances and related substances in the field of humectants, detergents and / or cleaning agents PROCESS FOR THE EASIER PURIFICATION OF VALUABLE MATERIALS AND / OR THEIR MIXTURES IN THE FIELD OF WETTING, WASHING AND / OR CLEANING AGENTS AND RELATED SUBSTANCES

摘要

The present invention relates to a process for improving the color and odor characteristics of purity and in particular of a mixture of active and active substances in the field of wetting agents, detergents and / or cleaning agents. The process is characterized in that the starting material containing impurities, in particular volatile vapor impurities, is treated with superheated steam in the form of finely pulverized at atmospheric pressure and the bleaching agent is optionally used to improve the color.;In one particular embodiment, the present invention relates to a process for the purification of starting materials containing volatile vapor impurities, in particular in the spray drying zone using superheated steam as a drying gas and / or in the field of wetting agents, detergents and / To a method for drying an aqueous formulation of a mixture of an active substance and / or an active substance. This purification treatment may be initiated simultaneously with oxidation or reduction bleaching in the treated material to produce a bright colored active substance or a mixture of such active substances. If necessary, trace amounts of ozone can be added to the excess steam.