Process for preparing trioxane

US6124480A · kind A · utility

Inventors

• Michael Hoffmockel · Niedernhausen, DE
• Gunter Sextro · Wiesbaden, DE
• Gerhard Emig · Erlangen, DE
• Frank Kern · Kandel, DE

Key dates

• Filing date: Jun 30, 1995
• Grant date: Sep 26, 2000
• Expiry date: Jun 30, 2015

Classification

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

Abstract

The process serves for the preparation of trioxane from formaldehyde in the gas phase in the presence of a tungstomolybdophosphoric acid of the composition H.sub.3 PW.sub.n Mo.sub.m O.sub.40 .multidot.xH.sub.2 O (n=4-8, m=12-n; x=0-32) as catalyst.