ALUMINA ABRASIVE PARTICLES USED FOR AUTOMOTIVE FINISHING COMPOSITIONS

The present disclosure is directed to an alpha alumina powder having a specific surface area, a specific crystallite size, and a specific particle size distribution for use in abrasive polishes, and method of making such powder. The method of making the alpha alumina powder can include calcining an...

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Bibliographic Details
Main Authors SALVATORE, James A, MULDER, Carlijn Lucinde, BERBERIAN, James, BOTTIGLIERI, Stephen
Format Patent
LanguageEnglish
French
German
Published 30.03.2022
Subjects
CHEMISTRY
COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS
GRINDING
INORGANIC CHEMISTRY
METALLURGY
PERFORMING OPERATIONS
POLISHING
TOOLS FOR GRINDING, BUFFING, OR SHARPENING
TRANSPORTING
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Summary:The present disclosure is directed to an alpha alumina powder having a specific surface area, a specific crystallite size, and a specific particle size distribution for use in abrasive polishes, and method of making such powder. The method of making the alpha alumina powder can include calcining an aluminum oxide precursor powder at a temperature of 800-1500° C. and milling the calcined powder to the specific particle size distribution. The alpha alumina powder disclosed herein can quickly enable high removal rate with undiminished aesthetic quality when used in abrasive polishes.
Bibliography:Application Number: EP20180754768