Dye compositions and methods for film coating tablets and the li

Details Dye compositions and methods for film coating tablets and the li Dye compositions and methods for film coating tablets and the li

1994-11-28

1996-04-30

Dudash, Diana

Coating processes

Medical or dental purpose product; parts; subcombinations;...

Particulate or unit-dosage-article base

427 223, 427212, A61J 306, A61J 310, B05D 724, B01J 800

Patent

active

055123147

ABSTRACT:
An improved dye composition for use in coating tablets and the like is constituted by a stable, aqueous suspension containing a water-soluble, nontoxic dye, an opacifying agent which may be titanium dioxide or iron oxide all immobilizing agent for immobilizing the dye and preventing it from migrating when applied to a tablet or the like, the immobilizing agent being constituted by a nontoxic metal salt present in an amount of from approximately 0.1 to 10 equivalents of metal per mole of dye, and water. The suspension may also contain a film-forming, water-soluble or water-dispersible edible polymer and a plasticizer. These compositions are used in lieu of lake compositions to produce tablets and the like with uniform, non-mottled coatings.

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