Pharmaceutical dosage form and method for the production...

A - Human Necessities – 61 – K

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Details

A61K 9/32 (2006.01) A61K 9/28 (2006.01) A61K 9/50 (2006.01) A61K 9/52 (2006.01) C08F 220/18 (2006.01)

Patent

CA 2476972

The invention relates to a method for producing a pharmaceutical dosage form as tablets, pellets and/or in the form of an active ingredient-containing matrix, whereby the tablets, pellets and/or active ingredient-containing matrix contain a pharmaceutical active ingredient and a copolymer serving as a coating agent and/or binding agent, and optionally contain a core and pharmaceutically common additives. According to the invention, the copolymer, the pharmaceutical active ingredient, the optionally present core and/or the pharmaceutically common additives are processed using known techniques by melting, injection molding, extrusion, wet granulation, casting, dipping, spreading out, spraying on, or pressing to form tablets, pellets and/or an active ingredient-containing matrix. The inventive method is characterized in that a copolymer is used that consists of 20 to 34 wt. % methacrylic acid, 20 to 69 wt. % methylacrylate and 0 to 40 wt. % ethylacrylate and, optionally, of 0 to 10 wt. % of additional vinylically copolymerizable monomers with the provision that the glass transition temperature of the copolymer is no higher than 60~ C according to ISO 11357-2, Item 3.3.3. The invention also relates to the pharmaceutical dosage form produced according to this method, said copolymer and the use thereof.

L'invention concerne un procédé de fabrication d'une forme pharmaceutique en tant que comprimés, granules et/ou matrice contenant des agents actifs, lesdits comprimés, granules et/ou matrice contenant des agents actifs comportant un agent actif pharmaceutique et un copolymère en tant qu'agent d'enrobage ou agent liant, ainsi qu'un noyau et des additifs pharmaceutiques habituels. Ledit procédé consiste à fabriquer lesdits comprimés, granules et/ou matrice contenant des agents actifs par fusion, moulage par injection, extrusion, granulation humide, coulage, trempe, bouchage, pulvérisation ou compression de façon connue en soi. Le procédé selon l'invention est caractérisé en ce qu'il fait intervenir un copolymère composé de 20 à 34 % en poids d'acide méthacrylique, de 20 à 69 % en poids de méthacrylate, de 0 à 40 % en poids d'éthylacrylate et éventuellement de 0 à 10 % en poids d'autres monomères pouvant être copolymérisés de façon vinylique, la température de transition vitreuse du copolymère devant être de 60·C au maximum selon ISO11357-2 paragraphe 3.3.3. L'invention concerne également la forme pharmaceutique obtenue selon l'invention ainsi que le copolymère et son utilisation.

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