JPS5590501A - Preparation of ethylcarboxymethylcellulose - Google Patents
Preparation of ethylcarboxymethylcelluloseInfo
- Publication number
- JPS5590501A JPS5590501A JP16432978A JP16432978A JPS5590501A JP S5590501 A JPS5590501 A JP S5590501A JP 16432978 A JP16432978 A JP 16432978A JP 16432978 A JP16432978 A JP 16432978A JP S5590501 A JPS5590501 A JP S5590501A
- Authority
- JP
- Japan
- Prior art keywords
- reaction
- carboxymethylcellulose
- alkali
- ethylcarboxymethylcellulose
- reacted
- 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
Landscapes
- Polysaccharides And Polysaccharide Derivatives (AREA)
Abstract
PURPOSE: To obtain ethylcarboxymethylcellulose with high substitution degree at high yield by a method wherein carboxymethylcellulose and diethyl sulfate are reacted in the presence of alkali while formed alcohol in removed out of a reaction system.
CONSTITUTION: Carboxymethylcellulose or salt thereof are reacted in the presence of alkali at 70W140°C while alcohol formed by side-reaction is removed out of a reaction system. As alkali, sodium hydroxide, potassium hydroxide or the like are used and a solvent is generally used in the reaction. As a solvent, toluene, xylene, benzene or the like are mentioned and the reaction can be carried out at an atmospheric pressure. The amount of diethyl sulphate is as small as 2W4 times the theoretical amount based on carboxymethylcellulose.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16432978A JPS5590501A (en) | 1978-12-28 | 1978-12-28 | Preparation of ethylcarboxymethylcellulose |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16432978A JPS5590501A (en) | 1978-12-28 | 1978-12-28 | Preparation of ethylcarboxymethylcellulose |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5590501A true JPS5590501A (en) | 1980-07-09 |
JPS6261043B2 JPS6261043B2 (en) | 1987-12-19 |
Family
ID=15791090
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16432978A Granted JPS5590501A (en) | 1978-12-28 | 1978-12-28 | Preparation of ethylcarboxymethylcellulose |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5590501A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0517501A (en) * | 1991-07-12 | 1993-01-26 | Sanyo Chem Ind Ltd | Etherification of cellulose derivative |
JP2010031165A (en) * | 2008-07-30 | 2010-02-12 | Sanyo Chem Ind Ltd | Alkyl-etherified carboxyalkylcellulose |
-
1978
- 1978-12-28 JP JP16432978A patent/JPS5590501A/en active Granted
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0517501A (en) * | 1991-07-12 | 1993-01-26 | Sanyo Chem Ind Ltd | Etherification of cellulose derivative |
JPH0713081B2 (en) * | 1991-07-12 | 1995-02-15 | 三洋化成工業株式会社 | Method for etherification of cellulose derivative |
JP2010031165A (en) * | 2008-07-30 | 2010-02-12 | Sanyo Chem Ind Ltd | Alkyl-etherified carboxyalkylcellulose |
Also Published As
Publication number | Publication date |
---|---|
JPS6261043B2 (en) | 1987-12-19 |
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