Roche Vitamins Inc.

Hoffmann-la Roche Inc.

Hermann Stein

Klaus Viardot

Gudrun Kolb

Hansjorg Stoller

Ernst Cathrein

Bin Yang

A process for mixing or dispersing liquids is provided that includes introducing liquids to be mixed or dispersed into a mixing device having a cylindrical support. The cylindrical support includes an inlet nozzle having a bore which is in fluid communication through a turbulence chamber with a bore of an outlet nozzle, wherein the bores of the nozzles are axially spaced apart relative to one another. The liquids are then allowed to enter the turbulence chamber through the bore of the inlet nozzle where the liquids are mixed or dispersed. The mixed or dispersed liquid is then recovered from the outlet nozzle. Various devices for mixing or dispersing liquids are also provided.

Preparation of liquid dispersions

Process for preparing a finely divided pulverous carotenoid retinoid or natural colourant preparation

A novel process for producing powdered carotenoid preparations, in which a suspension of a carotenoid in a high-boiling oil is brought into contact with superheated steam during a maximum period of 30 seconds, and subsequently emulsified the liquified solution of said carotenoid in oil produced by said contact with superheated steam in an aqueous solution of a colloid and then spraying and drying said emulsion to a powder.

Powdered aqueous carotenoid dispersions

Growing community of inventors

Liestal, Switzerland

Hermann Stein