EP0254811A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Coated ion exchange resins
Assignee: Fisons Corp
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Filing: 1987-04-14
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Granted: —
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Expires: 2007-04-14
Abstract
Abstract Sulfonic acid cationic exchange resin particles which have been treated to improve their coatability with up to about 20% by weight of a compound selected from hydroxypropylmethyl cellulose, hydroxypropyl cellulose, hydroxypropyl sorbitol, sorbitol, and polyvinylpyrrolidone.
Inventors
- 👤 Yegnaswami Raghunathan
- 👤 San-Laung Chow
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 17:03
CPC Classifications
A; A61; A61K; A61K47/00; A61K9/00; A61K9/14; A61K9/16; A61K9/1605; A61K9/1629; A61K9/1635; A61K47/50; A61K47/51; A61K47/56; A61K47/58; A61K47/585; A61K9/1617; A61K9/1623; A61K9/1652; A61K9/48; A61K9/50; A61K9/5005; A61K9/5021; A61K9/5036; A61K9/5042; A61K9/5047
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
55 words
Sulfonic acid cationic exchange resin particles which have been treated to improve their coatability with up to about 20 percent by weight of an impregnating agent, based on the combined weight of the agent and the particles, said agent being selected from the group consisting of hydroxypropylmethyl cellulose, hydroxypropyl cellulose, sorbitol, hydroxypropyl sorbitol, and polyvinylpyrrolidone.
Claim 2
Dependent Claim
55 words
Sulfonic acid cationic exchange resin particles which have been treated to improve their coatability with up to about 20 percent by weight of an impregnating agent, based on the combined weight of the agent and the particles, said agent being selected from the group consisting of hydroxypropylmethyl cellulose, hydroxypropyl cellulose, sorbitol, hydroxypropyl sorbitol, and polyvinylpyrrolidone.
Claim 3
Dependent Claim
21 words
A process for the production of drug-resin complex particles comprising adsorbing a basic drug on the resin particles of Claim 1.
Claim 4
Dependent Claim
27 words
The process of Claim 2, characterized in that the drug-resin complex particles have been coated with a water-permeable diffusion barrier subsequent to treatment with the impregnating agent.
Claim 5
Dependent Claim
14 words
The process of Claims 2 and 3, wherein the impregnating agent is hydroxypropylmethyl cellulose.
Claim 6
Dependent Claim
14 words
The process of Claims 2 and 3, wherein the impregnating agent is hydroxypropyl cellulose.
Claim 7
Dependent Claim
13 words
The process of Claims 2 and 3, wherein the impregnating agent is sorbitol.
Claim 8
Dependent Claim
14 words
The process of Claims 2 and 3, wherein the impregnating agent is hydroxypropyl sorbitol.
Claim 9
Dependent Claim
13 words
The process of Claims 2 and 3, wherein the impregnating agent is polyvinylpyrrolidone.
References Cited (Backward Citations)
No citation records indexed.
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