Thermostable iron oxide pigments, processes for their preparatio

Details Thermostable iron oxide pigments, processes for their preparatio Thermostable iron oxide pigments, processes for their preparatio

1988-07-25

1990-04-03

Rosenberg, Peter D.

Compositions: coating or plastic

Materials or ingredients

Pigment, filler, or aggregate compositions, e.g., stone,...

106418, 106439, 106456, C09C 124

Patent

active

049130633

ABSTRACT:
Improved iron oxide pigments useful in the manufacture of magnetic recording carriers or for coloring inorganic or organic materials are iron oxide pigments having an iron (II) content of at least 5% by weight calculated as FeO after-treated with a phenolic compounds of the formula ##STR1## wherein X is O or NH, and

REFERENCES:
patent: 3758320 (1973-09-01), Flores
patent: 4753680 (1988-06-01), Burow

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