Process for the manufacture of microencapsulated flakes or powders, process for the preparation of medicinal products for flatulence, additives for cements, concretes, paints and plasters and processes for surface modification of plastics and stabilization of foams

摘要

The invention relates to a process for the production of microencapsulated flakes or powders by drying aqueous mixtures containing a) one or more non-thermoplastic compounds which are emulsifiable in water and have a boiling point higher than that of water and b) at least one water-soluble, film-forming polymer, the content of component a) being at most 95 % by weight, relative to the dry weight of components a) and b), characterised in that the water-soluble, film-forming polymer has a flocculation point from 20 to 98 DEG C, or the flocculation point is adjusted by means of additives to 20 to 98 DEG C, and the drying is carried out by thin-layer drying in a temperature range above the flocculation point.