George REYES,Charles R. CUNNINGHAM,Thomas P. FARRELL,Cara YOUNG
申请号：
US14189508
公开号：
US20140248350A1
申请日:
2014.02.25
申请国别(地区):
US
年份:
2014
代理人:
摘要：
The present invention includes pH dependent, dry film coating compositions containing calcium silicate for use on orally-ingestible substrates such as tablets and the like. The film coating compositions can be applied as an aqueous suspension either directly to a substrate or after the substrate has been coated with a subcoat. In preferred aspects, the polymer is either an enteric or reverse-enteric polymer. Methods of preparing the dry film coatings, methods of preparing corresponding aqueous suspensions, methods of applying the coatings to substrates and the coated substrates themselves are also disclosed.
