Black composite oxide particle and method for production...

Details Black composite oxide particle and method for production... Black composite oxide particle and method for production...

2007-10-30

2007-10-30

Vanoy, Timothy C. (Department: 1754)

Chemistry of inorganic compounds

Oxygen or compound thereof

Metal containing

C423S600000, C423S594160, C423S138000, C423S140000, C423S141000, C423S155000, C423S158000, C423S159000, C423S111000, C423S115000, C423S122000, C423S123000, C427S212000, C427S215000, C427S219000

Reexamination Certificate

active

10498485

ABSTRACT:
A black composite oxide particle includes a composite oxide having Fe, Mg and Al as metal components. The particle contains Fe, Mg and Al in amounts of 30 to 55 mass %, 1 to 10 mass %, and 1 to 10 mass %, respectively, and has an atomic ratio of Fe3+/Fe2+of 0.8 to 10. Also described is a method for producing the black composite oxide particle. In an embodiment, the particle includes a hydrated composite oxide represented by an empirical formula: Fe2+aFe3+bMgcAldOe·nH2O. The black composite oxide particle is suitable as a black pigment for a coating material, an ink, toner particles, a rubber and a plastic, and is reduced with respect to the load on the environment and excellent in blackness.

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patent: 9-124972 (1997-05-01), None
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