NADELFOERMIGES MAGNETISCHES EISENOXID UND VERFAHREN ZU SEINER HERSTELLUNG

A process for the manufacture of acicular magnetic iron oxides which consist of a core of gamma-iron(III) oxide and a shell of a magnetite modified with zinc(II) ions and/or manganese(II) ions and which contain, based on the total modified gamma-iron(III) oxide, from 0.1 to 20 percent by weight of i...

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Main Authors JAECKH,CHRISTOF,.DR, SARNECKI,WILHELM,.DR, RUDOLF,PETER,.DR, STECK,WERNER,.DR
Format Patent
LanguageGerman
Published 06.11.1980
Edition3
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Summary:A process for the manufacture of acicular magnetic iron oxides which consist of a core of gamma-iron(III) oxide and a shell of a magnetite modified with zinc(II) ions and/or manganese(II) ions and which contain, based on the total modified gamma-iron(III) oxide, from 0.1 to 20 percent by weight of iron(II) ions, from 0.1 to 10 percent by weight of zinc(II) ions and/or from 0.1 to 10 percent by weight of manganese(II) ions.
Bibliography:Application Number: DE19792916403