Recovery of anhydrous dioxane extractively distilled with diols or alkanolamine

US4007095A · kind A · utility

Assignee

• BASF SE

Inventors

• Dieter Wolf · Darmstadt, DE
• Eberhard Bender
• Theodor Weber · Ludwigshafen, DE

Key dates

• Filing date: May 2, 1974
• Grant date: Feb 8, 1977
• Expiry date: May 2, 1994

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D319/12
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Dioxane is produced by reaction of ethylene glycol or a polyethylene glycol using an acid catalyst. The reaction product containing dioxane, water and byproducts is subjected to extractive distillation with a high-boiling agent which is miscible with water.