Preparation of metallic pigments having a metallic luster
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United States of America Patent
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-
May 4, 1982
Grant Date -
N/A
app pub date -
Dec 12, 1980
filing date -
Jan 31, 1980
priority date (Note) -
Expired
status (Latency Note)
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Abstract
To prepare a colored pigment which has a metallic luster and consists of a metallic core whose surface is at least partially covered with an iron oxide, iron pentacarbonyl is oxidized with oxygen in a fluidized bed of the metallic cores at above 100.degree. C. The amount of iron pentacarbonyl vapor introduced into the fluidized bed must not exceed 5% by volume, based on the total gases introduced into the fluidized bed over the same period of time.
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