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:
May. 31, 2011
Filed:
May. 24, 2006
Ralf Karch, Kleinostheim, DE;
Bernd Kayser, München, DE;
Andreas Rivas-nass, Budenheim, DE;
Jürgen Bodo Widmer, Darmstadt, DE;
Roland Winde, Frankfurt, DE;
Eileen Wörner, Maintal, DE;
Ralf Karch, Kleinostheim, DE;
Bernd Kayser, München, DE;
Andreas Rivas-Nass, Budenheim, DE;
Jürgen Bodo Widmer, Darmstadt, DE;
Roland Winde, Frankfurt, DE;
Eileen Wörner, Maintal, DE;
Umicore AG & Co. KG, Hanau, DE;
Abstract
The present invention relates to a process for the preparation of indium acetate comprising the steps: (a) reacting an indium compound with an alkaline compound in a protic solvent to obtain an iridium containing precipitate, where the reaction is conducted in the presence of at least one component (i) selected from oxalic acid, a salt of oxalic acid, formic acid and a salt of formic acid, (b) reacting the precipitate in the presence of at least (i) one compound selected from oxalic acid, a salt of oxalic acid, formic acid and a salt of formic acid, and (ii) CHCOH and/or CH(CO)O(CO)CHto give an iridium acetate containing solution. The invention also relates to indium acetate having a low halide content, to an indium containing precipitate and to uses of the iridium containing precipitate of the present invention and the iridium acetate of the present invention.