Surface-treated metallic-oxide fine powder, and its production and use
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United States of America Patent
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Jun 3, 2003
Grant Date -
Jan 10, 2002
app pub date -
Mar 29, 2001
filing date -
Mar 31, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The tribo-electro static charge is stabilized by treating the surface of the metallic-oxide fine powders such as a silica powder, using the mixed solution which consists of a specific silane coupling agent containing primary amino group, other silane coupling agent containing amino group and the hydrophobic agent The powder such as silica has the small charge variation with time, and is suitable as the additive of the powder coatings or the electrophotographic toner.
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