Alcohol ethoxylates of reduced EO content or residual PO content

US4967017A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Karl Schmid · Mettmann, DE
• Alfred Meffert · Monheim, DE
• Klaus Friedrich · Lake Forest, US
• Michael Langen · Aachen, DE
• Klaus Herrmann · Monheim, DE

Key dates

• Filing date: Mar 31, 1989
• Grant date: Oct 30, 1990
• Expiry date: Mar 31, 2009

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C41/03
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the production of alcohol polyglycol ethers by reaction of an alcohol with ethylene oxide and/or propylene oxide wherein a basic alkali metal compound catalyst is employed in at least 0.5% by weight, expressed as sodium methylate, and based on the total weight of the reactants. The reaction mixture is neutralized in the presence of a filter aid.