Bayer Aktiengesellschaft

Andre Fellholter

Heiko Herold

Stefan Hofmann

Barbara Schulte

Frank Behrendt

The process for producing crystallisation products with an average particle diameter of &lt;1 .mu.m is based on the atomisation of a solution and the simultaneous evaporation of the solvent. The atomised solution A crystallises in a gas atmosphere, in which it is simultaneously contacted with a cloud of drops 4 of a surfactant-containing liquid B, thus forming an aerosol mixture A, B which is then deposited in the form of a colloidal crystal suspension in which the surfactant-containing liquid B forms the continuous phase. The cloud of drops 4 of the surfactant-containing liquid can also be produced by atomisation.

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Koln, Germany

Andre Fellholter