Dyed hectorite pigments and applications
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United States of America Patent
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-
Mar 22, 1994
Issued Date -
N/A
app pub date -
Sep 29, 1992
filing date -
Apr 5, 1988
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A coloring pigment useful for coloring or tinting inks, paints, plastics and rubber comprises the reaction product of a cationic organic dye and a hectorite mineral, the hectorite mineral having a small average particle size and a high cation exchange capacity. The pigment has excellent color strength and does not bleed in water or oil and is easily dispersable in aqueous and organic media.
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