Aqueous lake pigment suspension
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United States of America Patent
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-
Mar 24, 1987
Grant Date -
N/A
app pub date -
Oct 24, 1984
filing date -
Oct 24, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
This invention relates to a pigment suspension usable for film coating tablets and the like, comprising lake pigment particles, a polymeric colloid, a viscosity lowering agent, which permits a higher concentration of pigment particles in the pigment suspension, and an aqueous solvent. A typical pigment suspension comprises a lake pigment, titanium dioxide, a natural gum, sodium tartrate, and water.
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