Process for the preparation of iridium acetate

Details Process for the preparation of iridium acetate Process for the preparation of iridium acetate

2011-05-31

2011-05-31

Gonzalez, Porfirio Nazario (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Heavy metal containing

Reexamination Certificate

active

07951969

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) CH3CO2H and/or CH3(CO)O(CO)CH3to 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.

REFERENCES:
patent: 1 046 629 (2000-10-01), None
patent: 2 413 323 (2005-10-01), None
patent: WO 96/23757 (1996-08-01), None
EPO Machine language English translation of EP 1 046 629 A1 (Jul. 2010).

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