POWDER COMPOSITION COMPRISING A COPOLYMER MIXTURE AND A WATER-SOLUBLE CELLULOSE
The invention is concerned with a powder composition, comprising 50 to 95 % by weight of a copolymer mixture A of a copolymer 1, comprising 5 to 60 % by weight of polymerized units of methacylic acid and 95 to 40 % by weight of C1- to C4-alkylesters of (meth)acrylic acid, and a copolymer 2, comprisi...
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Main Authors | , , , , , |
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Format | Patent |
Language | English Spanish |
Published |
01.10.2021
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Subjects | |
Online Access | Get full text |
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Summary: | The invention is concerned with a powder composition, comprising 50 to 95 % by weight of a copolymer mixture A of a copolymer 1, comprising 5 to 60 % by weight of polymerized units of methacylic acid and 95 to 40 % by weight of C1- to C4-alkylesters of (meth)acrylic acid, and a copolymer 2, comprising more than 95 and up to 100 % by weight of polymerized units of C1- to C4-alkylesters of (meth)acrylic acid, and 50 to 5 % by weight of a water-soluble cellulose B. The powder composition originates from the co-processing of the copolymer mixture A and the water-soluble cellulose B by a drying process of an aqueous dispersion, such as spray drying or freeze drying. Further processing leads to a compressed dosage form.
La invención se relaciona con una composición en polvo, que comprende de 50 a 95% en peso de una mezcla del copolímero A de un copolímero 1, que comprende de 5 a 60% en peso de unidades polimerizadas de ácido metacrílico y de 95 a 40% en peso de ésteres de alquilo de C1-C4 de ácido (met)acrílico, y un copolímero 2, que comprende más de 95 y hasta 100% en peso de unidades polimerizadas de ésteres de alquilo de C1-C4 de ácido (met)acrílico, y de 50 a 5% en peso de una celulosa B soluble en agua. La composición en polvo se origina del coprocesamiento de la mezcla del copolímero A y la celulosa B soluble en agua, mediante un proceso de secado de una dispersión acuosa, tal como secado por aspersión o secado por congelación. El procesamiento adicional conduce a una forma de dosificación comprimida. |
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Bibliography: | Application Number: MX2021010904 |