Process for producing iron oxide pigments

C - Chemistry – Metallurgy – 09 – C

Patent

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Details

C09C 1/24 (2006.01) C01G 49/06 (2006.01) C04B 22/06 (2006.01) C08K 3/22 (2006.01) C09D 1/00 (2006.01) C09D 7/12 (2006.01)

Patent

CA 2326765

The present invention relates to a process for producing iron oxide red pigments containing the step of forming a suspension of haematite nuclei by reaction between dilute nitric acid and elemental iron above 90°C. and to pigments of pure color and their use.

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