JPS554333A - Enteric coating agent - Google Patents
Enteric coating agentInfo
- Publication number
- JPS554333A JPS554333A JP7677378A JP7677378A JPS554333A JP S554333 A JPS554333 A JP S554333A JP 7677378 A JP7677378 A JP 7677378A JP 7677378 A JP7677378 A JP 7677378A JP S554333 A JPS554333 A JP S554333A
- Authority
- JP
- Japan
- Prior art keywords
- ethyl
- cellulose
- carboxyethyl
- groups
- introducing
- 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
Abstract
NEW MATERIAL:An ethyl carboxyethyl cellulose wherein ethyl groups and carboxyethyl groups are bonded to cellulose through ether linkages.
USE: Enteric coating agent. Soluble to non-toxic organic sovents such as ethyl alcohol. The hydrophilic characteristics of the compound can be reduced by introducing ethyl groups to the chain.
PROCESS: The objective ethyl carboxyethyl cellulose can be prepared, e.g. by (1) reacting cellulose with α- or β-halogenopropionic acid in the presence of an alkali, in a solvent, thereby introducing the carboxyethyl group to the cellulose skeleton, and (2) introducing ethyl groups to the carboxyethylated cellulose by reacting with an alkylation agent such as ethyl chloride, ethyl bromide, etc., in the presence of an alkali.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7677378A JPS554333A (en) | 1978-06-24 | 1978-06-24 | Enteric coating agent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7677378A JPS554333A (en) | 1978-06-24 | 1978-06-24 | Enteric coating agent |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS554333A true JPS554333A (en) | 1980-01-12 |
Family
ID=13614900
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7677378A Pending JPS554333A (en) | 1978-06-24 | 1978-06-24 | Enteric coating agent |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS554333A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS559040A (en) * | 1978-07-07 | 1980-01-22 | Furonto Sangyo Kk | Preparation of enteric drug |
JPS56152426A (en) * | 1980-04-28 | 1981-11-26 | Kohjin Co Ltd | Coating method of solid medicine |
-
1978
- 1978-06-24 JP JP7677378A patent/JPS554333A/en active Pending
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS559040A (en) * | 1978-07-07 | 1980-01-22 | Furonto Sangyo Kk | Preparation of enteric drug |
JPS5748530B2 (en) * | 1978-07-07 | 1982-10-16 | ||
JPS56152426A (en) * | 1980-04-28 | 1981-11-26 | Kohjin Co Ltd | Coating method of solid medicine |
JPS5825646B2 (en) * | 1980-04-28 | 1983-05-28 | 株式会社興人 | Coating method for solid pharmaceuticals |
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