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:
Aug. 26, 2025
Filed:
Nov. 23, 2020
Basf SE, Ludwigshafen am Rhein, DE;
Jaroslaw Michael Mormul, Ludwigshafen am Rhein, DE;
Dieter Kolassa, Ludwigshafen am Rhein, DE;
Dominic Riedel, Ludwigshafen am Rhein, DE;
Joaquim Henrique Teles, Ludwigshafen am Rhein, DE;
Ansgar Gereon Altenhoff, Ludwigshafen am Rhein, DE;
Richard Dehn, Ludwigshafen am Rhein, DE;
Peter Oechsle, Ludwigshafen am Rhein, DE;
BASF SE, Ludwigshafen am Rhein, DE;
Abstract
The present invention relates to a process for purification of a mixture comprising water, N-alkyl-hydroxylammonium salts and some byproducts wherein from the mixture water and byproducts are distilled off until the purity of N-alkyl-hydroxylammonium salts in the residue is 95% or higher and additionally keeping the water content during and after the distillation≥40 wt.-% according to the residue.