Huels Aktiengesellschaft

Huels Aktiengesellschaft - Pb 15

Norbert Ripke

Dieter Balzer

Rudi Berkhof

Bernd Muller

Herman Kwekkeboom

The final mixture in the manufacture of alkyl polyglycosides comprises an acidic, non-aqueous solution of alkyl polyglycosides in long chain alcohols. The invention relates to a novel method of neutralizing these solutions. First, a small part of the solution is withdrawn and a mixture comprised of an alcohol or alcohol mixture having 1-6 C atoms and water is added thereto, the withdrawn part is neutralized with an aqueous-, alcoholic-, or aqueous-alcoholic alkali. The amount of alkali necessary to neutralize the alkyl polyglycoside solution is calculated and added to the alkyl polyglycoside solution.

Method of neutralizing alkyl polyglycoside solutions

Fatty alcohols are separated from a solution containing alkyl polyglycosides (APGs) and alcohols, wherein the alcohols and the alkyl groups of the APGs contain 10-18 C atoms and wherein the mean degree of polymerization of the (APGs) is 1.05-1.4 by distilling said solution at 160.degree.-200.degree. C. under a pressure of 0.1-20 hPa in a thin layer evaporator having a Reynolds number of 30-18,000.

Method of separation of fatty alcohols from solutions comprising alkyl

A process for the preparation of alkyl polyglycosides containing an alkyl group of about 8 to 24 carbon atoms, which comprises glycosylating and transglycosylating one or more saccharides, wherein the glycosylation is carried out in an evaporator at an acid number of about 1 to 10 mg of KOH/g.

Process for the preparation of light-colored alkyl polyglycosides

An alkyl glycoside having alkyl groups of 8 to 24 carbon atoms and an average polymerization degree of 1 to 10 is prepared in one stage by reacting a saccharide and at least one alcohol of 8 to 24 carbon atoms in a reaction medium containing a non-polar solvent in the presence of an emulsifier.

Process for the preparation of carbohydrate surfactants

Demulsifiers which contain compounds of formula I

Demulsifiers for breaking petroleum emulsions

An alkyloligoglycoside having an alkyl group content of 8 to 22 carbon atoms and having an average degree of oligomerization of 1 to 5 is sulfated with a sulfating agent in an organic solvent having a boiling point of 30.degree. to 100.degree. C.

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Haltern, Germany

Norbert Ripke