Composite cuprous oxide powder

Details Composite cuprous oxide powder Composite cuprous oxide powder

1996-02-21

1998-01-13

Marcheschi, Michael

Compositions: coating or plastic

Materials or ingredients

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

106 1505, 423604, 424405, 424630, 424635, 424417, 428403, 428404, 428689, 428699, 428701, 428702, C09D 516, C09C 100

Patent

active

057074380

ABSTRACT:
A composite cuprous oxide powder is provided comprising at least about 80% by weight of cuprous oxide particles and substantially the balance cupric oxide adhering to cuprous oxide particles. The composite cuprous oxide powder is produced by surface oxidizing cuprous oxide particles to form a black coating or layer thereon. The composite powder is produced by subjecting particles of cuprous oxide to surface oxidation at a temperature ranging from about 400.degree. F. to less than about 900.degree. F. for a time period sufficient to surface oxidize the particles of cuprous oxide and produce a black coating thereon of cupric oxide. The method is applicable to the production of black pigment grade cuprous oxide powder.

REFERENCES:
patent: 3100719 (1963-08-01), Dunn, Jr. et al.
patent: 3620943 (1971-11-01), White
patent: 5354603 (1994-10-01), Errede et al.
patent: 5382475 (1995-01-01), Kayser

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