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(11)    Patent No :    AP 2271   
(21)    Application No :    AP/P/2007/004073   
(22)    Filing Date :    13.04.2006   
(24)    Date of Grant &    10.08.2011   
           
(45)    Publication :

(30)  Priority Data       
(33) Country    (31) Number    (32) Date
FR    0503855    18.04.2005

(84)    Designated State

BW    GM    GH    KE    LS    MW  MZ   NA   SL
SD    SZ    T Z    UG    ZM    ZW
 
(73) Applicant(s)

CHRYSO, 19, Place De la Resistance, F-92440, Issy Les Moulineaux,
France

(72) Inventors

ANDREANI Pierre-Antoine, France

PELLERIN Bruno, France

AYME Karen, France

et al

(74) Representative

FISHER CORMACK & BOTHA
 

(51)    International  Classification   C04B 24/40 (2006.01)

(54)    Title

Adjuvant for reducing chromium (VI) ions into chromium.

(57)    Abstract

The invention concerns an adjuvant for reducing chromium (VI) ions into chromium (III) comprising a tin (II) complex and a carboxylic acid or one of its salts, as well as a method for preparing same. The invention also concerns a method for preparing a material with reduced chromium (VI) content. The invention further concerns the use of said adjuvant for reducing chromium (VI) ions into chromium (III).


(56)    Documents Cited :    EP 0 960 865    DE 299 15 326    WO 2005/016843    DE 20 2004 010467

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