C - Chemistry – Metallurgy – 09 – C
Patent
C - Chemistry, Metallurgy
09
C
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.
Butje Kai
Etzenbach Norbert
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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