HEAT-STABLE IRON OXIDE YELLOW PIGMENTS

Pure-coloured iron oxide yellow pigments having a silking index of less than 5 a nd a heat resistance of greater than 220.degree.C in polyethylene for at least 5 minu tes are obtained by oxidation of metallic iron with nitrobenzene in an acid medium in th e presence of compounds of elements chosen f...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: OEHLERT, WOLFGANG, BUROW, WILFRIED
Format: Patent
Sprache:eng ; fre
Schlagworte:
Online-Zugang:Volltext bestellen
Tags: Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
Beschreibung
Zusammenfassung:Pure-coloured iron oxide yellow pigments having a silking index of less than 5 a nd a heat resistance of greater than 220.degree.C in polyethylene for at least 5 minu tes are obtained by oxidation of metallic iron with nitrobenzene in an acid medium in th e presence of compounds of elements chosen from main groups 3 and 4 of the periodi c table.