Purification of phosphorous acid esters

US4866193A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Guenter Uphues · Monheim, DE
• Uwe Ploog · Haan, DE

Key dates

• Filing date: Dec 16, 1987
• Grant date: Sep 12, 1989
• Expiry date: Dec 16, 2007

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07F9/11
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for the purification of phosphoric acid partial ester mixtures in which, after the addition of a basic, non-volatile inorganic or organic compound, the unreacted fatty alcohol is directly removed from the partial ester mixture by distillation.