Process for removing methanol from formaldehyde-containing solutions

US7301055B2 · kind B2 · utility

Assignee

• Ticona LLC · US

Inventors

• Michael Hoffmockel · Niedernhausen, DE
• Matthias Göring · Hofheim, DE
• Juergen Lingnau · Mainz, DE
• Karl-Friedrich Muck · Wiesbaden, DE

Key dates

• Filing date: Nov 19, 2001
• Grant date: Nov 27, 2007
• Expiry date: May 24, 2022

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for removing methanol from formaldehyde-containing solutions. The present invention relates to a process for removing methanol from formaldehyde-containing solutions, with methanol being converted into formaldehyde dimethyl acetal by reactive distillation in the presence of an acidic fixed-bed catalyst, and the resultant mixture comprising methanol, formaldehyde dimethyl acetal and possibly other impurities being distilled off.