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. 08, 2016
Filed:
May. 12, 2011
Thomas Heidenfelder, Dannstadt-Schauernheim, DE;
Helmut Witteler, Wachenheim, DE;
Bernd Laubusch, Bürstadt, DE;
Hans-peter Seelmann-eggebert, Limburgerhof, DE;
Thomas Heidenfelder, Dannstadt-Schauernheim, DE;
Helmut Witteler, Wachenheim, DE;
Bernd Laubusch, Bürstadt, DE;
Hans-Peter Seelmann-Eggebert, Limburgerhof, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Aqueous leachant compositions and processes for using the same comprising: (a) providing a metal-containing compound; and (b) subjecting the metal-containing compound to an acid digestion comprising contacting the metal-containing compound with an aqueous leachant; wherein the aqueous leachant comprises a mixture selected from the group consisting of: (i) sulfuric acid and one or more alkanesulfonic acids having alkane moieties selected from the group consisting of propyl, ethyl and methyl groups, at a weight ratio of alkanesulfonic acid to sulfuric acid of 1:1000 to 1:1; (ii) sulfuric acid and one or more salts of alkanesulfonic acids having alkane moieties selected from the group consisting of propyl, ethyl and methyl groups, at a weight ratio of salt of alkanesulfonic acid to sulfuric acid of 1:9 to 1:99.