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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Bibliographic Details
Main Authors JAECKH,CHRISTOF,.DR, SARNECKI,WILHELM,.DR, RUDOLF,PETER,.DR, STECK,WERNER,.DR
Format Patent
LanguageGerman
Published 06.11.1980
Edition3
Subjects
ADHESIVES
BASIC ELECTRIC ELEMENTS
CHEMICAL PAINT OR INK REMOVERS
CHEMISTRY
COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS
COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F
CORRECTING FLUIDS
DYES
ELECTRICITY
FILLING PASTES
INDUCTANCES
INFORMATION STORAGE
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER
INKS
INORGANIC CHEMISTRY
MAGNETS
METALLURGY
MISCELLANEOUS APPLICATIONS OF MATERIALS
MISCELLANEOUS COMPOSITIONS
NATURAL RESINS
PAINTS
PASTES OR SOLIDS FOR COLOURING OR PRINTING
PHYSICS
POLISHES
SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
TRANSFORMERS
USE OF MATERIALS THEREFOR
WOODSTAINS
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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