Chemistry of inorganic compounds – Treating mixture to obtain metal containing compound – Group vib metal
Patent
1992-09-22
1994-08-30
Langel, Wayne
Chemistry of inorganic compounds
Treating mixture to obtain metal containing compound
Group vib metal
252 6254, 423DIG18, 588234, C01G 3702
Patent
active
053425898
ABSTRACT:
According to a process for converting chromium dioxide into chromium (III) oxide, a composite comprising chromium dioxide particles dispersed in an organic matrix is provided. In a first heating step, a feed consisting essentially of the composite is heated under conditions sufficient to convert the feed into an admixture comprising chromium oxide and carbon. In a second heating step, the admixture is heated under conditions such that substantially all of the chromium oxide in the admixture is converted into chromium (III) oxide. In preferred embodiments, the composite is a chromium dioxide-based magnetic recording medium.
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Osborne Joseph M.
Tsakanikas Peter D.
Griswold Gary L.
Kagan David B.
Kalinchak Stephen G.
Kirn Walter N.
Langel Wayne
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