Patent ID: 8980320
Filing Date: 2015-03-17
Classification: A61K

Abstract:
1. A film coating agent for a solid formulation, comprising a hydroxypropylmethylcellulose, negatively charged swelling clay, a cationic surfactant, and a fatty acid, wherein mass ratio of said swelling clay to said hydroxypropylmethylcellulose is 2:8 to 8:2, and content of said cationic surfactant is not less than 0.5 equivalents and not more than 1.5 equivalents relative to a cation exchange equivalent of said swelling clay and content of said fatty acid is not less than 0.2 equivalents and not more than 2.0 equivalents relative to 1 equivalent of said cationic surfactant, wherein said cationic surfactant is benzalkonium chloride, benzethonium chloride or distearyl dimethyl ammonium chloride, and said fatty acid is stearic acid, capric acid, or oleic acid.