JPS5474855A - Preparation of finely divided soluble cellulose derivative - Google Patents
Preparation of finely divided soluble cellulose derivativeInfo
- Publication number
- JPS5474855A JPS5474855A JP14367377A JP14367377A JPS5474855A JP S5474855 A JPS5474855 A JP S5474855A JP 14367377 A JP14367377 A JP 14367377A JP 14367377 A JP14367377 A JP 14367377A JP S5474855 A JPS5474855 A JP S5474855A
- Authority
- JP
- Japan
- Prior art keywords
- soluble cellulose
- cellulose
- cellulose derivative
- finely divided
- soluble
- 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
PURPOSE: To obtain a finely divided soluble cellulose direvative of almost spherical particle shape useful as a binder for tablet preparation, having a high internal porosity, a slight variation in particle size, by spray drying a soluble celulose derivaive solution.
CONSTITUTION: A 5W15 wt.% aqueous solution of a soluble cellulose derivative is dried by spraying in hot air. A usual disc type or two-fluid nozzle type spray dryer may be used, and the number of revolutions is preferably 8,000W40,000 rpm for the former dryer. Methyl cellulose, corboxymethyl cellulose, hydroxypropyl cellulose, etc. may be cited as the soluble cellulose derivative.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14367377A JPS5474855A (en) | 1977-11-29 | 1977-11-29 | Preparation of finely divided soluble cellulose derivative |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14367377A JPS5474855A (en) | 1977-11-29 | 1977-11-29 | Preparation of finely divided soluble cellulose derivative |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5474855A true JPS5474855A (en) | 1979-06-15 |
Family
ID=15344267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14367377A Pending JPS5474855A (en) | 1977-11-29 | 1977-11-29 | Preparation of finely divided soluble cellulose derivative |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5474855A (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0223590A2 (en) * | 1985-11-18 | 1987-05-27 | The Dow Chemical Company | Substained release compositions comprising hydroxypropyl cellulose ethers |
JPH02105A (en) * | 1987-04-24 | 1990-01-05 | Dai Ichi Seiyaku Co Ltd | Sustained release tablet |
EP0460609A1 (en) * | 1990-06-07 | 1991-12-11 | Nisshinbo Industries, Inc. | Process for producing fine cellulose powder |
US6320043B1 (en) | 1997-01-21 | 2001-11-20 | Wolf Walsrode Ag | Process for preparing fine-particle polysaccharide derivatives |
JP2003252902A (en) * | 2002-03-04 | 2003-09-10 | Shin Etsu Chem Co Ltd | Lowly substituted cellulose ether powder and its manufacturing method |
EP1136458A3 (en) * | 2000-03-18 | 2004-01-07 | Wolff Walsrode AG | Use in building material mixtures of polysaccharides or their derivatives, produced after gelation and hot vapour mill-drying by gas or water vapour drying, |
US6872820B2 (en) | 1998-12-23 | 2005-03-29 | Wolff Walsrode Ag | Finely divided polysaccharide derivatives |
-
1977
- 1977-11-29 JP JP14367377A patent/JPS5474855A/en active Pending
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0223590A2 (en) * | 1985-11-18 | 1987-05-27 | The Dow Chemical Company | Substained release compositions comprising hydroxypropyl cellulose ethers |
JPH02105A (en) * | 1987-04-24 | 1990-01-05 | Dai Ichi Seiyaku Co Ltd | Sustained release tablet |
EP0460609A1 (en) * | 1990-06-07 | 1991-12-11 | Nisshinbo Industries, Inc. | Process for producing fine cellulose powder |
US6320043B1 (en) | 1997-01-21 | 2001-11-20 | Wolf Walsrode Ag | Process for preparing fine-particle polysaccharide derivatives |
US6872820B2 (en) | 1998-12-23 | 2005-03-29 | Wolff Walsrode Ag | Finely divided polysaccharide derivatives |
EP1136458A3 (en) * | 2000-03-18 | 2004-01-07 | Wolff Walsrode AG | Use in building material mixtures of polysaccharides or their derivatives, produced after gelation and hot vapour mill-drying by gas or water vapour drying, |
US6943247B2 (en) | 2000-03-18 | 2005-09-13 | Wolff Walsrode Ag | Building material compositions |
JP2003252902A (en) * | 2002-03-04 | 2003-09-10 | Shin Etsu Chem Co Ltd | Lowly substituted cellulose ether powder and its manufacturing method |
EP1342733A1 (en) * | 2002-03-04 | 2003-09-10 | Shin-Etsu Chemical Co., Ltd. | Low-substituted cellulose ether powder and production process thereof |
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