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. 17, 2020
Filed:
Apr. 10, 2018
Epc Engineering & Technologies Gmbh, Arnstadt, DE;
Jens Henkel, Meuselbach-Schwarzmuhle, DE;
Jurgen Rassbach, Arnstadt, DE;
Tobias Przynosz, Saalfeld, DE;
Abstract
An exemplary process for the production of alkali metal salts of dialkyldithiocarbamic acids produced according to the following steps: i) reaction of one or more dialkylamines, carbon disulphide and alkali metal hydroxides to form alkali metal salts of dialkyldithiocarbamic acids; ii) crystallisation to form a crystal suspension of alkali metal salts of dialkyldithiocarbamic acids; iii) separation of crystals of alkali metal salts of dialkyldithiocarbamic acids from the mother liquor in step ii; (iv) recirculation of the separated mother liquor into the crystallisation process; and v) drying of the alkali metal salts of dialkyldithiocarbamic acids.