EP0040590A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
A pharmaceutical preparation having improved release properties
Assignee: Hassle AB
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Filing: 1981-05-19
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Granted: —
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Expires: 2001-05-19
Abstract
Abstract An oral pharmaceutical preparation comprises a core containing a therapeutically active substance and a coating and is characterized in that the coating comprises an anionic carboxylic acrylic polymer soluble only above pH 5.5 in an amount of 10 to 85 per cent by weight of the coating and a waterinsoluble polymer selected from quaternary ammonium substituted acrylic polymers. The preparation enables release of a major part of the drug contents thereof in the lower part of the intestinal system.
Inventors
- 👤 Conny Börje Bogentoft
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-29 15:53
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/48; A61K9/50; A61K9/5005; A61K9/5015; A61K9/5021; A61K9/5026
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
70 words
An oral pharmaceutical preparation comprising a core containing a therapeutically active substance and a coating, characterized in that the coating comprises an anionic carboxylic acrylic polymer soluble only above pH 5.5 in an amount of 1D to 85 per cent by weight of the coating and a waterinsoluble polymer selected from quarternary ammonium substituted acrylic polymers in an amount of 15 to 90 per cent by weight of the coating.
Claim 2
Dependent Claim
70 words
An oral pharmaceutical preparation comprising a core containing a therapeutically active substance and a coating, characterized in that the coating comprises an anionic carboxylic acrylic polymer soluble only above pH 5.5 in an amount of 1D to 85 per cent by weight of the coating and a waterinsoluble polymer selected from quarternary ammonium substituted acrylic polymers in an amount of 15 to 90 per cent by weight of the coating.
Claim 3
Dependent Claim
22 words
A preparation according to claim 1,.characterized in that the anionic carboxylic acrylic polymer is selected from partly methyl esterified methacrylic acid polymers.
Claim 4
Dependent Claim
28 words
A preparation according to one or more of the preceding claims, characterized in that the coating composition additionally comprises a plasticizer selected from fatty alcohols or fatty acids.
Claim 5
Dependent Claim
87 words
A process for preparing an oral pharmaceutical preparation comprising .a core containing a therapeutically active substance and a coating, characterized in that a large number of cores are coated with a composition comprising an anionic carboxylic acrylic polymer soluble only above pH 5.5 in an amount of 10 to 85 per cent by weight and a waterinsoluble polymer selected from quarternary ammonium substituted acrylic polymers in an amount of 15 to 90 per cent of the coating, by applying a solution of the composition to the cores.
Claim 6
Dependent Claim
87 words
A process for preparing an oral pharmaceutical preparation comprising .a core containing a therapeutically active substance and a coating, characterized in that a large number of cores are coated with a composition comprising an anionic carboxylic acrylic polymer soluble only above pH 5.5 in an amount of 10 to 85 per cent by weight and a waterinsoluble polymer selected from quarternary ammonium substituted acrylic polymers in an amount of 15 to 90 per cent of the coating, by applying a solution of the composition to the cores.
Claim 7
Dependent Claim
57 words
A coating composition characterized in that the dry substance thereof comprises an anionic carboxylic acrylic polymer soluble only above pH 5.5 in an amount of 10 to 85 per cent by weight and a waterinsoluble polymer selected from quarternary ammonium substituted acrylic polymers in an amount of 15 to 90 per cent by weight of the coating.
Claim 8
Dependent Claim
57 words
A coating composition characterized in that the dry substance thereof comprises an anionic carboxylic acrylic polymer soluble only above pH 5.5 in an amount of 10 to 85 per cent by weight and a waterinsoluble polymer selected from quarternary ammonium substituted acrylic polymers in an amount of 15 to 90 per cent by weight of the coating.
Claim 9
Dependent Claim
36 words
A method of obtaining release of a therapeutically active substance in the lower part of the intestinal system of an animal or man, characterized in administering orally to such host a preparation according to claim 1.
Claim 10
Dependent Claim
39 words
A method of treatment of inflammatory conditions in. the colon or lower ileum in an animal or man, characterized in administering orally to a host suffering from such conditions an effective amount of a preparation according to claim 1.
Claim 11
Dependent Claim
32 words
An oral pharmaceutical preparation, a process, a coating composition, a method of obtaining release or a method of treatment as claimed in one or more of claims 1-7 and substantially as described.
References Cited (Backward Citations)
No citation records indexed.
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