JPS5753457A - Regenerating and utilizing method of dimethyl sulfoxide - Google Patents
Regenerating and utilizing method of dimethyl sulfoxideInfo
- Publication number
- JPS5753457A JPS5753457A JP12860980A JP12860980A JPS5753457A JP S5753457 A JPS5753457 A JP S5753457A JP 12860980 A JP12860980 A JP 12860980A JP 12860980 A JP12860980 A JP 12860980A JP S5753457 A JPS5753457 A JP S5753457A
- Authority
- JP
- Japan
- Prior art keywords
- dimethyl sulfoxide
- cellulose
- solution
- solvent
- paraformaldehyde
- 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
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To recover and reutilize separated dimethyl sulfoxide as a solvent for cellulose, by treating a solution, containing the dimethyl sulfoxide, and used as the solvent for the cellulose with an alkali, and distilling the treated solution.
CONSTITUTION: A solution, containing dimethyl sulfoxide, and used as a solvent for cellulose, e.g. a filtrate prepared by dissolving the cellulose in a mixture of dimethyl sulfoxide with paraformaldehyde, precipitating with an alcohol, etc., and filtering off the precipitate, is treated with an alkali, e.g. NaOH, and the resultant treated solution is then distilled to recover the dimethyl sulfoxide. The resultant recovered dimethyl sulfoxide is reutilizable because an acidic substance, e.g. a carboxylic acid, present in the mixture solution of as the solvent for cellulose is inactivated and the strong interaction between the diemethyl sulfoxide and the paraformaldehyde is destroyed without reducing the reactivity of the paraformaldehyde and preventing the dissolution of the cellulose.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12860980A JPS601302B2 (en) | 1980-09-18 | 1980-09-18 | How to reuse dimethyl sulfoxide |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12860980A JPS601302B2 (en) | 1980-09-18 | 1980-09-18 | How to reuse dimethyl sulfoxide |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5753457A true JPS5753457A (en) | 1982-03-30 |
JPS601302B2 JPS601302B2 (en) | 1985-01-14 |
Family
ID=14989010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12860980A Expired JPS601302B2 (en) | 1980-09-18 | 1980-09-18 | How to reuse dimethyl sulfoxide |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS601302B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3611162A4 (en) | 2017-04-12 | 2020-12-23 | Toray Fine Chemicals Co., Ltd. | Method for distilling dimethylsulfoxide and multistage distillation column |
-
1980
- 1980-09-18 JP JP12860980A patent/JPS601302B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS601302B2 (en) | 1985-01-14 |
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