摘要:
The invention relates to a pharmaceutical composition comprising a mixture of at least one cationic, water-soluble (meth)acrylate copolymer, at least one water-insoluble polymer and at least one active ingredient having a solubility in demineralized water of 3.3 g/l or less, characterized in that the water-insoluble polymer and the active ingredient are present in a ratio of at most 3.5 to 1 parts by weight, and the pharmaceutical composition has the property of releasing the active ingredient present in a medium buffered to pH 1.2 in dissolved form in a concentration which, after 2 hours at pH 1.2, corresponds to at least sixteen times the solubility value of the active ingredient alone at pH 1.2.
摘要:
An active compound-containing pellet has a polymer coating of an anionic (meth)acrylate copolymer and a pharmaceutically active substance, embedded in a polymer matrix of one or more polymers, a particle size in the range from 300 to 1100 μm, a friability of at most 0.1%, measured using 200 g of pellets in a screening machine having a 200 μm screen, a screening diameter of 20 cm and 1.5 mm shaking amplitude at a shaking frequency of 50 l/sec for 10 min in the presence of six rubber cubes having a 1.8 cm edge length, with the proviso that the pellet releases no more than 10% of the active compound in a release test according to USP in artificial gastric juice at pH 1.2 after 120 min.
摘要:
The present invention provides a process for converting a solid (meth)acrylate copolymer into a dispersed form by preparing an aqueous dispersion comprising the components (a) a (meth)acrylate copolymer which is composed of free-radical polymerized methyl methacrylate, ethylacrylate and a salt of 2-trimethylammoniumethyl methacrylate, present in solid form as a powder or as a granulate, (b) up to 50% by weight calculated on the (meth)acrylate copolymer (a) of a dispersing agent selected from the groups of (b) i) plasticizers in combination with emulsifiers and/or (b) ii) pharmaceutically acceptable carbohydrates having 6 to 18 carbon atoms with a functional group and (c) water by mixing the components (a), (b) and (c) to give a suspension which becomes an aqueous dispersion during the conversion of the solid (meth)acrylate copolymer into the dispersed form, characterized in that, the (meth)acrylate copolymer is converted into the dispersed form by means of the presence of the dispersing agent at a temperature of less than 50° C.
摘要:
The present invention provides a process for converting a solid (meth)acrylate copolymer into a dispersed form by preparing an aqueous dispersion comprising the components (a) a (meth)acrylate copolymer which is composed of free-radical polymerized methyl methacrylate, ethylacrylate and a salt of 2-trimethylammoniumethyl methacrylate, present in solid form as a powder or as a granulate, (b) up to 50% by weight calculated on the (meth)acrylate copolymer (a) of a dispersing agent selected from the groups of (b) i) plasticizers in combination with emulsifiers and/or (b) ii) pharmaceutically acceptable carbohydrates having 6 to 18 carbon atoms with a functional group and (c) water by mixing the components (a), (b) and (c) to give a suspension which becomes an aqueous dispersion during the conversion of the solid (meth)acrylate copolymer into the dispersed form, characterized in that, the (meth)acrylate copolymer is converted into the dispersed form by means of the presence of the dispersing agent at a temperature of less than 50° C.
摘要:
The invention relates to a method for producing an oral form of administration which decomposes immediately and releases active ingredients in the mouth. According to said method, (a) an anionic pharmaceutical active ingredient is intensively mixed with (b) a copolymer consisting of radically polymerized C1-C4 esters of the acrylic acid or methacrylic acid and other (meth)acrylate monomers containing functional tertiary amino groups, and (c) between 5 and 50 wt. %, in relation to (b), of a C12-C22 carboxylic acid in the melted mass; the mixture is solidified and ground to form a powder containing active ingredients having an average particle size of 200 μm or less; and the powder is encapsulated in a water-soluble matrix consisting of pharmaceutically standard adjuvants, on the condition that no more than 3 wt. %, in relation to the copolymer, of emulsifiers with an HLB value of at least 14 must be contained therein. The invention also relates to the powder containing active ingredients and the uses of the same.
摘要:
The invention relates to a process for the production of granules or powders, suitable as coating agents and binders for oral or dermal pharmaceutical forms, for cosmetics or food supplements, consisting essentially of (a) a copolymer, consisting of free radical-polymerized C1- to C4-esters of acrylic or methacrylic acid and further (meth)acrylate monomers which contain functional tertiary amino groups, (b) 3 to 25% by weight, based on (a), of an emulsifier having an HLB of at least 14, (c) 5 to 50% by weight, based on (a), of a C12- to C18-monocarboxylic acid or of a C12- to C18-hydroxyl compound, where the components (a), (b) and (c) are simultaneously or successively blended or mixed with one another, optionally with addition of a pharmaceutical active compound and/or further customary additives, fused in a heatable mixer, mixed, the melt is cooled and comminuted to give granules or powders.
摘要:
The invention relates to a process for the production of granules or powders, suitable as coating agents and binders for oral or dermal pharmaceutical forms, for cosmetics or food supplements, consisting essentially of (a) a copolymer, consisting of free radical- polymerized C1- to C4-esters of acrylic or methacrylic acid and further (meth)acrylate monomers which contain functional tertiary amino groups, (b) 3 to 25% by weight, based on (a), of an emulsifier having an HLB of at least 14, (c) 5 to 50% by weight, based on (a), of a C12- to C18-monocarboxylic acid or of a C12- to C18- hydroxyl compound, where the components (a), (b) and (c) are simultaneously or successively blended or mixed with one another, optionally with addition of a pharmaceutical active compound and/or further customary additives, fused in a heatable mixer, mixed, the melt is cooled and comminuted to give granules or powders.
摘要:
The invention relates to a method for producing active ingredient-containing granules or powders involving the following steps: a) melting a mixture consisting of a pharmaceutical active ingredient and of a (meth)acrylate copolymer, which is comprised of 40 to 75 wt. % of radically polymerized C1 to C4 alkyl esters of acrylic acid or of methacrylic acid and can be comprised of 25 to 60 wt. % (meth)acrylate monomers having an anionic group in the alkyl radial; b) extruding the mixture, and; c) comminuting the extrudate to form a granule or powder. The inventive method is characterized in that the active ingredient is the salt of an alkaline substance, and in that the pH value, which can be measured on the obtained powder or granule, is equal to or less than pH 7.0. The invention also relates to pharmaceutical dosage forms or precursors thereof, which can be produced using the inventive method.
摘要:
The invention provides a gastric resistant, enteric-coated solid dosage form including a core containing a pharmaceutically active ingredient, an inner coating for the core, and an outer enteric coating. The inner coating comprises an anionic polymeric material or a water-soluble neutral polymeric material, and further comprises a water soluble inorganic salt which is not a carbonate or bicarbonates. The outer enteric coating comprises an anionic polymeric material which is less neutralized than the polymeric material comprising the inner coating and disintegrates rapidly at a pH of 5.5 to 7.0 upon entering the small intestine.
摘要:
The invention relates to a process for the preparation of a coating and binding agent for oral or dermal pharmaceutical forms, essentially consisting of (a) a copolymer consisting of free-radical-polymerized C1 to C4 esters of acrylic or methacrylic acid and further (meth)acrylate monomers which contain functional tertiary ammonium groups, the coplymer being present in powdered form having an average particle size of 1–40 μm, (b) 3 to 15% by weight, based on (a), of an emulsifier having an HLB of at least 14 and (c) 5 to 50% by weight, based on (a), of a C12—to C18-monocarboxylic acid or a C12—to C18-hydroxyl compound, the components (a), (b) and (c) being blended or mixed with one another with or without addition of water and if appropriate with addition of a pharmaceutical active compound and further customary additives and the coating and binding agent being produced from the mixture by melting, casting, spreading or spraying. The invention further relates to the coating and binding agent itself.
摘要翻译:本发明涉及一种制备用于口服或皮肤药物形式的包衣和粘合剂的方法,其基本上由(a)由丙烯酸或甲基丙烯酸的自由基聚合的C1至C4酯和(甲基)丙烯酸酯组成的共聚物 )丙烯酸酯单体,所述共聚物以平均粒径为1-40μm的粉末形式存在,(b)基于(a)的3至15重量%的具有HLB的乳化剂 至少14和(c)5至50重量%,基于(a)的C 12 - C 18 C 18 - 单羧酸或C < 将组分(a),(b)和(c)在或不加入水中彼此混合或混合,如果 适当地添加药物活性化合物和进一步的常规添加剂,并且通过熔融,浇铸,铺展或喷涂由混合物制备涂层和粘合剂。 本发明还涉及涂层和粘合剂本身。