Black iron oxide with improved heat stability and method of preparing same
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United States of America Patent
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Jan 30, 2001
Grant Date -
N/A
app pub date -
May 29, 1998
filing date -
May 29, 1998
priority date (Note) -
Expired
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Abstract
A process of using silicate and alkylphenol to surface-modify black iron oxide. The modified pigment shows superior heat stability. The process may be applied on a native slurry, hence providing a simple, economical and non-invasive method to modify black iron oxide on an industrial scale. The resultant black iron oxide may be used in lieu of mixed metal oxide in the majority of thermal applications.
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