EP0254822A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Polymer-treated ion exchange resins
Assignee: Fisons Corp
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Filing: 1987-05-05
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Granted: —
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Expires: 2007-05-05
Abstract
Abstract Sulfonic acid cationic exchange resin particles which have been treated to improve their coatability with minor amounts of high molecular weight polymers selected from carboxypolymethylene, xanthan gum, and propylene glycol alginate.
Inventors
- 👤 San-Laung Chow
- 👤 Yegnaswami Raghunathan
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 12:49
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/20; A; A61; A61K; A61K9/00; A61K9/14; A61K9/16; A61K9/1605; A61K9/1629; A61K9/1652; A61K47/00; A61K47/50; A61K47/51; A61K47/56; A61K47/58; A61K47/585; A61K9/1635; A61K9/48; A61K9/50; A61K9/5005; A61K9/5021; A61K9/5036; A61K9/5042; A61K9/5047
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
54 words
Sulfonic acid cationic exchange resin particles which have been treated to improve their coatability with up to about 1.1 percent by weight of a high molecular polymer, based on the combined weight of the polymer and the particles, said polymer being selected from the group consisting of carboxypolymethylene, xanthan gum, and propylene glycol alginate.
Claim 2
Dependent Claim
54 words
Sulfonic acid cationic exchange resin particles which have been treated to improve their coatability with up to about 1.1 percent by weight of a high molecular polymer, based on the combined weight of the polymer and the particles, said polymer being selected from the group consisting of carboxypolymethylene, xanthan gum, and propylene glycol alginate.
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
26 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 polymer.
Claim 5
Dependent Claim
12 words
The process of Claims 2 and 3, wherein the polymer is carboxypolymethylene.
Claim 6
Dependent Claim
13 words
The process of Claims 2 and 3, wherein the polymer is xanthan gum.
Claim 7
Dependent Claim
14 words
The process of Claims 2 and 3, wherein the polymer is propylene glycol alginate.
References Cited (Backward Citations)
No citation records indexed.
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