The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 2007
Filed:
Nov. 19, 2001
Michael Hoffmockel, Niedernhausen, DE;
Matthias Göring, Hofheim, DE;
Juergen Lingnau, Mainz-Laubenheim, DE;
Karl-friedrich Mück, Wiesbaden, DE;
Michael Hoffmockel, Niedernhausen, DE;
Matthias Göring, Hofheim, DE;
Juergen Lingnau, Mainz-Laubenheim, DE;
Karl-Friedrich Mück, Wiesbaden, DE;
Ticona GmbH, , DE;
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.