Patent · US Expired

Process for the separation of alcohols by distillation

US5710261A · kind A · utility

0Cited by

5References

14Claims

0Family size

Assignee

Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

Wilhelm Johannisbauer · Erkrath, DE
Michael Nitsche · Solingen, DE
Lutz Jeromin · Hilden, DE

Key dates

Filing date	Jan 31, 1996
Grant date	Jan 20, 1998
Priority date	—
Expiry date	Jan 31, 2016

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S159/16
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.