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US 2006/0234878 A1Published application
Additive for reducing chromium (vi) ions to chromium (iii) ions
OwnerPierre-Antoine Andreani, Bruno Pellerin +1inventors
InventorsPierre-Antoine Andreani, Bruno Pellerin, Karen Ayme
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Abstract
The invention relates to an additive for reducing Cr(VI) ions to Cr(III) ions, comprising a complex of tin(II) and a carboxylic acid or a salt thereof, and to the process for the preparation thereof. It also relates to a process for preparing a material having a low chromium(VI) content. Finally, it relates to the use of said additive for reducing chromium(VI) ions to chromium(III) ions.
Claims14
An additive for reducing Cr(VI) ions to Cr(III) ions, comprising an aqueous solution of a complex of tin(II), and a carboxylic acid or a salt thereof.
Dependencies are inferred from the claim text.