JPS56161401A - Etherification of carboxymethylcellulose - Google Patents
Etherification of carboxymethylcelluloseInfo
- Publication number
- JPS56161401A JPS56161401A JP6399780A JP6399780A JPS56161401A JP S56161401 A JPS56161401 A JP S56161401A JP 6399780 A JP6399780 A JP 6399780A JP 6399780 A JP6399780 A JP 6399780A JP S56161401 A JPS56161401 A JP S56161401A
- Authority
- JP
- Japan
- Prior art keywords
- cmc
- caustic alkali
- mercerization
- reacting
- stage
- 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.)
- Granted
Links
- 229920002134 Carboxymethyl cellulose Polymers 0.000 title abstract 2
- 239000001768 carboxy methyl cellulose Substances 0.000 title abstract 2
- 235000010948 carboxy methyl cellulose Nutrition 0.000 title abstract 2
- 239000008112 carboxymethyl-cellulose Substances 0.000 title abstract 2
- 238000006266 etherification reaction Methods 0.000 title abstract 2
- 239000003513 alkali Substances 0.000 abstract 4
- 239000003518 caustics Substances 0.000 abstract 4
- -1 ethyl halide Chemical class 0.000 abstract 2
- 238000005517 mercerization Methods 0.000 abstract 2
- 229920003086 cellulose ether Polymers 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
Landscapes
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
PURPOSE: To produce a high quality cellulose ether having good solubility and membrane-forming properties, by reacting carboxymethylcellulose with an ethyl halide in the presence of caustic alkali under a specified condition.
CONSTITUTION: In the production of an improved caroxymethylcellulose (CMC) by reacting CMC with an ethyl halide in the presence of caustic alkali, the following combination is used as the treating condition: (1) the weight ratio of an aqueous caustic alkali solution to CMC during CMC mercerization is 2W4, (2) the weight ratio of an aqueous caustic alkali solution to CMC during CMC mercerization is 2W4, and (3) the temperature and time of the etherification are 130W150°C (0.5W6hr) for 1st stage and 50W120°C (1W6hr) for 2nd stage.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6399780A JPS5941644B2 (en) | 1980-05-16 | 1980-05-16 | Method for etherifying carboxymethyl cellulose |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6399780A JPS5941644B2 (en) | 1980-05-16 | 1980-05-16 | Method for etherifying carboxymethyl cellulose |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56161401A true JPS56161401A (en) | 1981-12-11 |
| JPS5941644B2 JPS5941644B2 (en) | 1984-10-08 |
Family
ID=13245407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6399780A Expired JPS5941644B2 (en) | 1980-05-16 | 1980-05-16 | Method for etherifying carboxymethyl cellulose |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5941644B2 (en) |
-
1980
- 1980-05-16 JP JP6399780A patent/JPS5941644B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5941644B2 (en) | 1984-10-08 |
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