Patent ID: 6949256
Filing Date: 2005-09-27
Classification: A61K

Abstract:
1. A method for preparing a film-forming composition comprising: a) mixing iota carrageenan in an amount of from about 1% to about 15% by weight of the composition, kappa carrageenan in an amount less than 100% by weight of the iota carrageenan and a bulking agent in a ratio of bulking agent to total carrageenan of from about 1:1 to about 20:1 to form a dry mixture; b) mixing a plasticizer and water to form a liquid mixture; c) heating the liquid mixture to a temperature of from about 75° C. to about 90° C.; d) adding the dry mixture to the heated mixture with stirring to form a dispersion; and e) heating the dispersion with stirring to a temperature of from about 85° C. to about 95° C. to form a uniform dispersion.