High opacity coatings and substrates coated therewith
AssigneeBPSI Holdings, Inc.
InventorsThomas Mehaffey, Manish Ghimire
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Abstract
The present invention is directed film coating compositions for use on oral dosage forms such as compressed tablets and other orally-ingestible substrates which contain a water-soluble polymer, an opacifying agent such as, calcium carbonate or starch, and isomalt. The film coating compositions can be in the form of a fully formulated dry blend or as an aqueous suspension which can be applied either directly to a substrate or after the substrate has been coated with a subcoat. Oral substrates such as tablets coated with the film coating compositions are also disclosed and have high opacity and overall excellent appearance.
Claims22
A dry film coating composition comprising:
- i) 25-50% by weight of a water-soluble polymer selected from the group consisting of polyvinyl alcohol, polyvinyl alcohol-polyethylene glycol graft copolymer, hydroxypropyl methylcellulose and hydroxypropyl cellulose;
- ii) 25-50% by weight of an opacifying agent selected from the group consisting of calcium carbonate, starch, microcrystalline cellulose, and mixtures thereof;
- and
- iii) 25-35% by weight of isomalt particles,
- wherein less than 15% by weight of the isomalt particles have a particle size diameter of less than 60 microns.
Dependencies are inferred from the claim text.