Coating for pharmaceutical dosage forms

Details Coating for pharmaceutical dosage forms Coating for pharmaceutical dosage forms

1993-09-16

1996-04-02

Griffin, Ronald W.

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...

424497, 424458, 424459, 424462, 424463, 424474, 424475, 424482, 424490, 427 216, 427 219, 524522, 524523, C08J 302, C08K 320, A61K 932, A01N 2510, C08L 3300

Patent

active

RE0352004

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.

REFERENCES:
patent: 3538214 (1970-11-01), Polli et al.
patent: 3935326 (1976-01-01), Groppenbacher et al.
patent: 4017647 (1977-04-01), Ohno et al.
patent: 4350782 (1982-09-01), Kuchler et al.
patent: 4415547 (1983-11-01), Yu et al.
patent: 4433076 (1984-02-01), Bauer et al.
patent: 4442248 (1984-04-01), Kanda et al.
patent: 4452862 (1984-06-01), Markert et al.
patent: 4504609 (1985-03-01), Kuwajima et al.
patent: 4510275 (1985-04-01), Ihikura et al.
patent: 4520172 (1985-05-01), Lehmann et al.
Gove et al., Webster's Third New International Dictionary of the English Language Unabridged, published by G. & C. Merriam Company, Springfield, Massachusetts, U.S.A., 1965, p. 23.

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