Coating for pharmaceutical dosage forms

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...

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Details

427 3, 424 33, 524522, 524523, A61K 932, A01N 2510, C08L 3300

Patent

active

046440313

ABSTRACT:
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.

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