Process for preparing stable inorganic pigment
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United States of America Patent
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-
Jun 15, 1982
Grant Date -
N/A
app pub date -
Dec 31, 1979
filing date -
May 21, 1979
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for preparing a stable inorganic pigment coated with a fine amorphous silica which comprises forming a silica sol in an aqueous prepared slurry of an inorganic pigment by reacting an alkali silicate solution with one or more acid gases so that a fine silica sol covers the surfaces of the particles of the inorganic pigment.
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