Process for production of black manganese/iron oxide pigment

Details Process for production of black manganese/iron oxide pigment Process for production of black manganese/iron oxide pigment

1991-01-22

1992-10-13

Dixon, Jr., William R.

Compositions: coating or plastic

Materials or ingredients

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

423594, 423605, 423633, C09C 122

Patent

active

051547694

ABSTRACT:
A black manganese/iron oxide pigment having a spinel structure and having the composition Mn.sub.x Fe.sub.3-x O.sub.4 wherein x has a value from 0.1 to 0.9, is prepared by the steps:

REFERENCES:
patent: 3615810 (1971-10-01), Holznagel et al.
patent: 4680130 (1987-07-01), Hibst
patent: 4753680 (1988-06-01), Burow et al.
patent: 4826537 (1989-05-01), Ostertag
patent: 4849020 (1989-07-01), Osborne et al.

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