Loading patent…
AssigneeHenkel Kommanditgesellschaft auf Aktien
InventorsWilli Wuest, Rainer Eskuchen, Paul Schulz, Volker Bauer, Franz-Josef Carduck, Herbert Esser, Christiane Zeise, Manfred Weuthen, Josef Penninger
Estimating the term…
The crude reaction products from the synthesis of alkyl glycosides are bleached by kneading the material substantially freed from the excess fatty alcohol and containing at most limited quantities of water with an oxidizing agent at such elevated temperatures that the reaction mixture lends itself to plastic processing. Temperatures of from about 50.degree. to 150.degree. C. are particularly suitable, although it is best to apply temperatures in the range from about 80.degree. to 100.degree. C. using aqueous hydrogen peroxide as the oxidizing agent. Bleaching is carried out under basic conditions, optionally by addition of an alkaline compound, such as for example 50% sodium hydroxide solution. The bleached product accumulates in the form of a solid. It is preferably mixed with typical compatible solids, more particularly typical constituents of detergents and cleaning preparations, to form a solid and preferably free-flowing alkyl glycoside compound.
A process for bleaching a discolored surface active alkyl glycoside comprising the steps of:
A continuous process for bleaching a discolored surface active alkyl glycoside comprising the steps of:
A continuous process for bleaching a discolored surface active alkyl glycoside comprising the steps of:
Dependencies are inferred from the claim text.