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:
Sep. 16, 2014
Filed:
Dec. 20, 2012
Basf SE, Ludwigshafen, DE;
Daniel Schneider, Mannheim, DE;
Klaus-Dieter Mohl, Hockenheim, DE;
Martin Schäfer, Grünstadt, DE;
Donata Maria Fries, Mannheim, DE;
Joaquim Henrique Teles, Waldsee, DE;
Peter Bassler, Viernheim, DE;
Stefan Rittinger, Mannheim, DE;
Thomas Schaub, Neustadt, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Process for obtaining formic acid by thermal separation of a stream comprising formic acid and a tertiary amine (I), in which a liquid stream comprising formic acid, tertiary amine (I) and water is produced by combining tertiary amine (I) and a formic acid source in the presence of water, water and organic decomposition products of the tertiary amine (I) are removed and formic acid is removed by distillation from the resulting liquid stream in a distillation apparatus, wherein the stream comprising water and organic decomposition products of the tertiary amine (I) which have been separated off is separated into two liquid phases, the upper liquid phase is removed and the lower, water-comprising liquid phase is recirculated to the formic acid source.