Manufacture of acicular ferromagnetic metal pigments containing

Details Manufacture of acicular ferromagnetic metal pigments containing Manufacture of acicular ferromagnetic metal pigments containing

1975-07-14

1977-04-12

Garvin, Patrick P.

Specialized metallurgical processes, compositions for use therei

Processes

Electrothermic processes

148105, 106290, 106306, 106304, 252 6262, B22F 900

Patent

active

040173038

ABSTRACT:
A process for the manufacture of acicular ferromagnetic metal pigments containing iron, having a reduced field strength distribution and a steeper residual magnetization curve, by applying an alkaline earth metal cation and an organic compound having at least one group capable of forming a chelate to appropriate acicular iron oxides and then reducing the treated oxides.

REFERENCES:
patent: 3634063 (1972-01-01), Hwang
patent: 3661556 (1972-05-01), Jolley et al.
patent: 3856580 (1974-12-01), Smeggil et al.
patent: 3856581 (1974-12-01), Smeggil et al.
patent: 3910785 (1975-10-01), Greene et al.

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