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:
Feb. 07, 2017
Filed:
Jun. 05, 2012
Applicants:
Ekkehard Siebecke, Berlin, DE;
Mirko Bär, Birkenwerder, DE;
Eberhard Raue, Schönflieβ, DE;
Inventors:
Assignee:
UHDE INVENTA-FISCHER GMBH, Berlin, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 55/14 (2006.01); C07C 51/14 (2006.01); B01J 8/20 (2006.01); C07C 209/68 (2006.01); C07C 51/41 (2006.01);
U.S. Cl.
CPC ...
C07C 209/68 (2013.01); B01J 8/20 (2013.01); C07C 51/412 (2013.01); B01J 2208/00592 (2013.01); B01J 2208/00628 (2013.01); B01J 2219/0004 (2013.01);
Abstract
The invention relates to a method for the continuous production of a solution of salts, in particular for the production of hexamethylenediamine adipate and a device for implementing such a method. According to the invention, it is proposed to convert, in a first step, a substoichiometric quantity of alkane diamine in a ratio to the alkane dicarboxylic acid in water and, in a subsequent second step, to implement making-up with alkane diamine, adjustment of the stoichiometric ratios being effected via a pH value measurement at a constant temperature.