Process for improving raw pigment grindability
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United States of America Patent
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Issued Date -
Sep 15, 2005
app pub date -
Mar 12, 2004
filing date -
Mar 12, 2004
priority date (Note) -
Abandoned
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Abstract
Methods of improving the grindability of raw titanium dioxide produced by high temperature oxidation of titanium tetrachloride comprise quenching the oxidation reaction products with an essentially inert fluid to reduce the degree of aggregation of the titanium dioxide particles and thereby improve the grindability of the raw titanium dioxide. The essentially inert fluid can comprise recycled cooled gaseous reaction products from which the titanium dioxide particles have been separated.
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