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US 2003/0155668 A1Published application
Method for producing nanoparticles suspensions
OwnerTheo Stalberg, Christine Schroeder +1inventors
InventorsTheo Stalberg, Christine Schroeder, Hans Dolhaine
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Abstract
The invention relates to a method for producing a suspension of an undecomposed meltable material having an average particle diameter of between 5 to 500 nm. The inventive method enables stable suspensions to be produced and is characterised in that it only requires a simple technical infrastructure in many production plants, it delivers high space-time yields, and can easily be scaled up.
Claims7
A process for the production of a suspension of a substance which can be melted without decomposing with a mean particle diameter in the range from 5 to 500 nm, characterized in that
- (a) an emulsion is prepared from the substance which can be melted without decomposing, a liquid phase in which the substance is poorly soluble and an effective quantity of at least one surface modifier and
- (b) the resulting emulsion is expanded into a zone of reduced pressure so that the emulsion is cooled to below the melting point of the substance.
Dependencies are inferred from the claim text.