New film coating

The present invention provides a novel film coating dispersion obtainable by the polymerization of the following monomers in water: acrylic acid or an ester thereof in the range 40 to 80% by weight; methacrylic acid or an ester thereof in the range 20 to 60% by weight; and a polymerizable surfactant...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	STAFFAN SCHANTZ, LARS JOHAN PONTUS DE VERDIER HJARTSTAM, OLA J KARLSSON
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON HUMAN NECESSITIES HYGIENE MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MEDICAL OR VETERINARY SCIENCE METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	The present invention provides a novel film coating dispersion obtainable by the polymerization of the following monomers in water: acrylic acid or an ester thereof in the range 40 to 80% by weight; methacrylic acid or an ester thereof in the range 20 to 60% by weight; and a polymerizable surfactant in the range 0.01 to 9% by weight. The dispersion is suitable for coating pharmaceutical formulations to provide controlled release of the active ingredient.