Process for the preparation of trioxane

US5508449A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Gerhard Emig · Erlangen, DE
• Benno Kruger · Idstein, DE
• Frank Kern · Kandel, DE
• Michael Hoffmockel · Niedernhausen, DE
• Karl-Friedrich Muck · Wiesbaden, DE
• Gunter Sextro · Wiesbaden, DE

Key dates

• Filing date: Jan 6, 1994
• Grant date: Apr 16, 1996
• Expiry date: Jan 6, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D323/06
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

In a process for the preparation of trioxane from formaldehyde in the gas phase in the presence of a catalyst, the catalyst employed is 11-molybdo-1-vanadophosphoric acid, H.sub.4 PVMo.sub.11 O.sub.40 .multidot.n H.sub.2 O (n=0-32). Advantages of this process are, inter alia, high space-time yields and the suppression of byproducts.