Rohm Gmbh

Rohm Gmbh Chemische Fabrik

Harry Goetz

Klaus Lehmann

Dieter Dreher

A method for coating solid pharmaceutical formulations, comprising coating said solid formulation with an aqueous fluid, film forming coating medium comprising a dissolved polymer prepared from acrylic and/or methacrylic monomers having a side group containing a tertiary amine substituent, wherein the amine nitrogen atom is converted to the ammonium salt form; and then drying said coated film.

Method for coating pharmaceutical formulations

Coated pharmaceutical dosage forms which are resistant to gastric juice and release their active ingredient rapidly at a predetermined pH value in the range from pH 5 to pH 8 are obtained in accordance with the invention by coating pharmaceutical dosage forms with an aqueous dispersion containing dispersed latex particles of a first polymer which contains carboxyl groups and is water soluble between pH 5 and pH 8 and of a second water insoluble film forming polymer, in a weight ratio between 60:40 and 5:95.

Growing community of inventors

Alsbach-Haehnlein, Germany

Harry Goetz