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:
Mar. 15, 2005
Filed:
Jan. 12, 2001
Heinz Auer, Neulussheim, DE;
Bernd Bessling, Grosse Ille, MI (US);
Hans Hammer, Mannheim, DE;
Hans Hasse, Kaiserslautern, DE;
Friedrich Sauer, Obersülzen, DE;
Maximilian Vicari, Limburgerhof, DE;
Till Adrian, Bobenheim-Roxheim, DE;
Heinz Auer, Neulussheim, DE;
Bernd Bessling, Grosse Ille, MI (US);
Hans Hammer, Mannheim, DE;
Hans Hasse, Kaiserslautern, DE;
Friedrich Sauer, Obersülzen, DE;
Maximilian Vicari, Limburgerhof, DE;
Till Adrian, Bobenheim-Roxheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The invention relates to a process for obtaining anhydrous or substantially anhydrous formic acid, in which firstly aqueous formic acid is prepared by hydrolysis of methyl formate and is freed from water in the subsequent work-up. The process has the special feature that steam, which is employed for the hydrolysis of methyl formate and for heating a distillation column serving for work-up, is also used as stripping steam for waste-water stripping. The stripped waste water is produced during work-up.