JPS5762224A - Preparation of drug of enteric coating - Google Patents
Preparation of drug of enteric coatingInfo
- Publication number
- JPS5762224A JPS5762224A JP13793680A JP13793680A JPS5762224A JP S5762224 A JPS5762224 A JP S5762224A JP 13793680 A JP13793680 A JP 13793680A JP 13793680 A JP13793680 A JP 13793680A JP S5762224 A JPS5762224 A JP S5762224A
- Authority
- JP
- Japan
- Prior art keywords
- cellulose derivative
- ammonia
- enteric
- drug
- cellulose
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Medicinal Preparation (AREA)
Abstract
PURPOSE: To obtain drugs of the titled coating without using an organic solvent, causing any fear of fire or explosion, bringing about any environmental pollution and pollution of operational environment, by using a solution obtained by dispersing an enteric cellulose derivative having a specific particle diameter into an ammonia- containing aqueous solution.
CONSTITUTION: An enteric cellulose derivative, e.g., hydroxypropyl-methyl cellulose phthalate, carboxymethylethyl cellulose, etc. is made into fine divided power having an average particle diameter ≤150μm preferably ≤50μm,. and dispersed to an ammonia-containing solution. The prepared dispersion is used to coat a solid pharmaceutical preparation, to give a drug of enteric coating. The amount of ammonia used is preferably an amount to give the pH of the dispersion in a range from a pH of 0.5 higher than the pH obtained by dispersing the cellulose derivative to the minimum pH required to dissolve the cellulose derivative.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13793680A JPS5762224A (en) | 1980-10-01 | 1980-10-01 | Preparation of drug of enteric coating |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13793680A JPS5762224A (en) | 1980-10-01 | 1980-10-01 | Preparation of drug of enteric coating |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5762224A true JPS5762224A (en) | 1982-04-15 |
Family
ID=15210157
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13793680A Pending JPS5762224A (en) | 1980-10-01 | 1980-10-01 | Preparation of drug of enteric coating |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5762224A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59193832A (en) * | 1983-04-18 | 1984-11-02 | Sankyo Co Ltd | Preparation of enteric drug |
WO2003042248A1 (en) * | 2001-11-15 | 2003-05-22 | Samsung Fine Chemicals Co., Ltd. | Preparation method of solvent-free water-dispersible hydroxypropyl methyl cellulose phthalate nanoparticle |
WO2005074395A3 (en) * | 2004-02-10 | 2006-06-22 | Samsung Fine Chemicals Co Ltd | Method of preparing aqueous dispersion of hydroxypropyl methyl cellulose phthalate nanoparticle composition |
-
1980
- 1980-10-01 JP JP13793680A patent/JPS5762224A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59193832A (en) * | 1983-04-18 | 1984-11-02 | Sankyo Co Ltd | Preparation of enteric drug |
WO2003042248A1 (en) * | 2001-11-15 | 2003-05-22 | Samsung Fine Chemicals Co., Ltd. | Preparation method of solvent-free water-dispersible hydroxypropyl methyl cellulose phthalate nanoparticle |
US6893493B2 (en) | 2001-11-15 | 2005-05-17 | Samsung Fine Chemicals Co., Ltd. | Preparation method of solvent-free water-dispersible hydroxypropyl methyl cellulose phthalate nanoparticle |
WO2005074395A3 (en) * | 2004-02-10 | 2006-06-22 | Samsung Fine Chemicals Co Ltd | Method of preparing aqueous dispersion of hydroxypropyl methyl cellulose phthalate nanoparticle composition |
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