Henkel Kommanditgesellschaft Auf Aktien

Henkel Corporation

Michael Nitsche

Wilhelm Johannisbauer

Achim Ansmann

Rolf Kawa

Rainer Eskuchen

Lutz Jeromin

Helga Gondek

Volkmar Jordan

Hermann Koerner

Paul Schulz, Deceased

Process for obtaining carotene from palm oil

Process for the production of alkyl and/or alkenyl oligoglycosides

Emulsifiers particularly suitable for the production of storable, high-viscosity and sensorially light o/w emulsions contain from about 43% to about 99% by weight of an alkyl and/or alkenyl oligoglycoside and from about 1% to about 57% by weight of a fatty alcohol.

Emulsifiers

Aliphatic alcohols with up to 30 and especially with 6 to 18 carbon atoms are separated from a mixture of alkyl glycosides and alcohols which are unreacted during the production of these glycosides, by single or multi-stage distillation. The alcohols are distilled off by a drop film evaporator to impoverish the reaction mixture to residual alcohol contents of 5 wt % and under. The strip load of the drop film evaporator is set to at least 1.0 m.sup.3 /h m, especially at least 1.8 m.sup.3 /h m and preferably at least 3.0 m.sup.3 /h m. It is possible to reduce the alcohol content of the product to any value between 0.1 and 5 wt % at acceptable overall cost.

Process for the separation of alcohols by distillation

The invention relates to a process for the removal of alcohols containing up to 30 and, more particularly, between 8 and 18 carbon atoms by distillation from a mixture of alkyl glycosides and alcohols remaining unreacted in the production of these alkyl glycosides, the alcohols being removed in two stages, a falling-film evaporator being used in the first stage and a thin-layer evaporator being used in the second stage.

Process for the removal of alcohols

Growing community of inventors

Solingen, Germany

Michael Nitsche