IRON OXIDE RED PIGMENTS WITH IMPROVED COLOUR VALUES

The present invention relates to iron oxide red pigments having improved color values, a process for producing these improved iron oxide red pigments by the Penniman red process using nitrate (also referred to as nitrate process or direct red process) and an apparatus for the production thereof.

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Bibliographische Detailangaben
Hauptverfasser: KISCHKEWITZ, Jürgen, SPIEGELHAUER, Stephan, CZAPLIK, Waldemar
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:The present invention relates to iron oxide red pigments having improved color values, a process for producing these improved iron oxide red pigments by the Penniman red process using nitrate (also referred to as nitrate process or direct red process) and an apparatus for the production thereof.