JPS57154179A - Recovery of tetrahydrofuran - Google Patents
Recovery of tetrahydrofuranInfo
- Publication number
- JPS57154179A JPS57154179A JP3728381A JP3728381A JPS57154179A JP S57154179 A JPS57154179 A JP S57154179A JP 3728381 A JP3728381 A JP 3728381A JP 3728381 A JP3728381 A JP 3728381A JP S57154179 A JPS57154179 A JP S57154179A
- Authority
- JP
- Japan
- Prior art keywords
- thf
- compound
- butanediol
- distillation
- polyester
- 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
- Furan Compounds (AREA)
Abstract
PURPOSE: To make a content of an aldehyde compound ≤ a specific amount, by treating the titled compound prepared as a by-product in the preparation process of a polyester comprising 1,4-butanediol as a main glycol component with a boron hydride compound, followed by distillation.
CONSTITUTION: Preferably 0.20W1.50wt% based on tetrahydrofuran (THF) of a compound shown by the formula MBH4(M is Li, K, Na) is added to a distillate containing THF obtained as a by-product in the preparation process of a polyester comprising 1,4-butanediol as a main glycol component. The distillate is heated at from room temperature W the boiling temperature, purified by distillation, to give THF having a content of aldehyde compound calculated as CHO of ≤50ppm, preferably ≤20ppm, inexpensively with eliminating the pro blems of pollution, etc., contributing greaty to save of resources, etc. This THF is capable of preparing stably high-quality polytetramethylene glycol having no discoloration, useful as a raw material for polyurethane.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3728381A JPS6011911B2 (en) | 1981-03-17 | 1981-03-17 | How to recover tetrahydrofuran |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3728381A JPS6011911B2 (en) | 1981-03-17 | 1981-03-17 | How to recover tetrahydrofuran |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57154179A true JPS57154179A (en) | 1982-09-22 |
JPS6011911B2 JPS6011911B2 (en) | 1985-03-28 |
Family
ID=12493367
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3728381A Expired JPS6011911B2 (en) | 1981-03-17 | 1981-03-17 | How to recover tetrahydrofuran |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6011911B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005116111A1 (en) * | 2004-05-11 | 2005-12-08 | Zimmer Aktiengesellschaft | Method for producing elastomeric copolyesters |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0423125Y2 (en) * | 1987-03-31 | 1992-05-28 | ||
JPH0423127Y2 (en) * | 1987-10-09 | 1992-05-28 |
-
1981
- 1981-03-17 JP JP3728381A patent/JPS6011911B2/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2005116111A1 (en) * | 2004-05-11 | 2005-12-08 | Zimmer Aktiengesellschaft | Method for producing elastomeric copolyesters |
EA009917B1 (en) * | 2004-05-11 | 2008-04-28 | Лурги Циммер Гмбх | Method for producing elastomeric copolyesters |
Also Published As
Publication number | Publication date |
---|---|
JPS6011911B2 (en) | 1985-03-28 |
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