| abstract |
A non-toxic, edible, enteric film coating, dry powder composition for use in making an aqueous enteric suspension which may be used in coating pharmaceutical tablets comprises (a) an acrylic resin, said resin comprising (i) from 20 to 85 percent by weight of at least one alkyl acrylate or alkyl methacrylate moiety, (ii) from 80 to 15 percent by weight of at least one vinyl or vinylidene moiety having a carboxylic acid group capable of salt formation, and (iii) from 0 to 30 percent by weight of at least one other vinyl or vinylidene moiety copolymerizable with (i) and (ii), (b) an alkalizing agent capable of reacting with the acrylic resin such that, after reaction, 0.1 to 10 mole percent of the acidic groups in (1a-ii) are present in the sail form, and (c) a detackifier. |