Process for the preparation of iron yellow pigments

Details Process for the preparation of iron yellow pigments Process for the preparation of iron yellow pigments

C - Chemistry, Metallurgy

09

C

6/210, 23/269

C09C 1/22 (2006.01) C01G 49/02 (2006.01) C01G 49/06 (2006.01) C09C 1/24 (2006.01)

Patent

CA 2011839

A Process for the Preparation of Iron Yellow Pigments ABSTRACT OF THE DISCLOSURE An improved process is disclosed for preparing iron yellow pigments from iron - (II) salt solutions, in the presence of iron scrap, by injection of air at elevated temperatures. After formation of the pigment, the reaction suspension is stirred without additional gas injection, whereby lighter, purer yellow pigments are obtained. Le A 26 524

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