Methods of producing kaolin pigments
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United States of America Patent
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Nov 10, 1981
Issued Date -
N/A
app pub date -
Jun 3, 1980
filing date -
Apr 17, 1978
priority date (Note) -
Expired
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Abstract
A method for producing kaolin pigments of improved coated brightness and opacity is provided in which kaolin is degritted, heated to the level of substantially minimum brightness and then leached. The kaolin may be comminuted before treatment, after heating or after leaching to control particle size distribution.
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