Method of producing aggregated composite pigments using organic silicon compounds
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United States of America Patent
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Oct 17, 1995
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N/A
app pub date -
Mar 25, 1994
filing date -
May 1, 1992
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Expired
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Abstract
An improved process for producing a aggregated composite pigment having desired physical and optical characteristics when used as a coating, filler or pigment in paper. The aggregated pigment is produced by contacting a substantially dry fine particle size mixture of kaolin and one or more additional feed minerals with a previously hydrolyzed organic silicon compound, such as hydrolyzed tetraethoxysilane, and then recovering the aggregated composite pigment.
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