Dry-powder film coating composition and method of preparation
AssigneeChr. Hansen, Inc.
InventorsCharles W. Gayser, Jr., Jean-Paul Goyette
Life of this patent
Estimating the term…
Abstract
An edible dry-powder formulation of a film coating for pharmaceuticals and confectionaries using gum acacia as a low-cost film former is provided. A cellulosic polymer such as hydroxypropyl methylcellulose is used in addition to the gum acacia. A plasticizer such as propylene glycol is also added. The resulting formulation is a dry, free flowing powder that can be put into solution and applied to a tablet or other substrate without an extended waiting period. The resulting film coating is clear, shiny, durable and extremely economical. Because the formulation is a dry powder, it has along shelf life and low shipping costs.
Claims5
A method of making a dry powder film forming composition capable of forming an aqueous solution having a low viscosity ranging from about 75 to about 150 cps when measured by the Brookfield Small Chamber Method (10% w/w in water, USP:
- Model RVTD:
- Chamber 13R:
- Spidle #21;
- 100 rpm:
- 23° C.) and for use on pharmaceutical tablets, food, and confectionary products, the method comprising the steps of:
- mixing a dry powdered cellulosic polymer, a film forming amount of gum acacia, and a plasticizer in a blender until thoroughly dry mixed to form an edible film forming composition wherein said composition is not pre-wetted prior to being put into solution and used on said pharmaceutical tablets, food and confectionary products.
Dependencies are inferred from the claim text.