Process for the separation of propylene glycol from fatty alcohols

US5076896A · kind A · utility

Assignee

• Henkel Kommanditgesellschaft auf Aktien · DE

Inventors

• Franz-Josef Carduck · Haan, DE
• Lutz Jeromin · Hilden, DE
• Gerd Geobel · Cologne, DE
• Wilhelm Johannisbauer · Erkrath, DE
• Georg Fieg · Hamburg, DE
• Theo Fleckenstein · Hilden, DE

Key dates

• Filing date: Jun 13, 1989
• Grant date: Dec 31, 1991
• Expiry date: Jun 13, 2009

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S203/20
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

A process for the separation of propylene glycol from a mixture of low-boiling fatty alcohols and propylene glycol which comprises extracting the mixture with water to produce a water-propylene glycol mixture and fractionating the water-propylene glycol mixture to produce propylene glycol that is substantially anhydrous and an apparatus for carrying out the process.