JPS5679632A - Preparation of polyhydric alcohol - Google Patents
Preparation of polyhydric alcoholInfo
- Publication number
- JPS5679632A JPS5679632A JP15697679A JP15697679A JPS5679632A JP S5679632 A JPS5679632 A JP S5679632A JP 15697679 A JP15697679 A JP 15697679A JP 15697679 A JP15697679 A JP 15697679A JP S5679632 A JPS5679632 A JP S5679632A
- Authority
- JP
- Japan
- Prior art keywords
- polyhydric alcohol
- formic acid
- acid salt
- formaldehyde
- aldol condensation
- 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 separate a polyhydric alcohol from a formic acid salt in high purity, by removing a polyhydric alcohol from a reaction product of an aliphatic aldehyde with excessive formaldehyde, and subjecting the residual liquid composed of formaldehyde and a formic acid salt to the treatment similar to aldol condensation.
CONSTITUTION: In the preparation of a polyhydric alcohol of formula II (R3 and R4 are 1W4C alkyl, etc.) by the aldol condensation and the crossed Cannizzaro reaction of an aliphatic aldehyde of formula I (one of R1 and R2 is H and the other is H or 1W6C alkyl, etc.) with excess formaldehyde in the presence of an inorganic base, the separation of the polyhydric alcohol and the formic acid salt from the reaction product liquid is carried out as follows: (1) the polyhydric alcohol is separated from the reaction product, (2) the residual liquid consisting of the formic acid salt and formaldehyde is added with excessive aliphatic aldehyde and an inorganic base and subjected to aldol condensation, (3) the product is separated into the organic phase and the aqueous phase, (4) the organic phase is subjected successively to aldol condensation and Cannizzaro reaction, and (5) the formic acid salt is separated aqueous phase.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15697679A JPS582209B2 (en) | 1979-12-04 | 1979-12-04 | Method for producing polyhydric alcohol |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15697679A JPS582209B2 (en) | 1979-12-04 | 1979-12-04 | Method for producing polyhydric alcohol |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5679632A true JPS5679632A (en) | 1981-06-30 |
JPS582209B2 JPS582209B2 (en) | 1983-01-14 |
Family
ID=15639438
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15697679A Expired JPS582209B2 (en) | 1979-12-04 | 1979-12-04 | Method for producing polyhydric alcohol |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS582209B2 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6077980A (en) * | 1997-08-07 | 2000-06-20 | Mitsubishi Gas Chemical Company, Inc. | Process for producing polyhydric alcohol |
US6080896A (en) * | 1997-08-07 | 2000-06-27 | Mitsubishi Gas Chemical Company, Inc. | Process for producing polyhydric alcohol |
JP2002003421A (en) * | 2000-06-27 | 2002-01-09 | Mitsubishi Gas Chem Co Inc | Method for producing polyol |
JP2002003420A (en) * | 2000-06-27 | 2002-01-09 | Mitsubishi Gas Chem Co Inc | Method for producing polyol |
US7461617B2 (en) | 2005-01-20 | 2008-12-09 | Honda Motor Co., Ltd. | Engine-driven work machine |
-
1979
- 1979-12-04 JP JP15697679A patent/JPS582209B2/en not_active Expired
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6077980A (en) * | 1997-08-07 | 2000-06-20 | Mitsubishi Gas Chemical Company, Inc. | Process for producing polyhydric alcohol |
US6080896A (en) * | 1997-08-07 | 2000-06-27 | Mitsubishi Gas Chemical Company, Inc. | Process for producing polyhydric alcohol |
JP2002003421A (en) * | 2000-06-27 | 2002-01-09 | Mitsubishi Gas Chem Co Inc | Method for producing polyol |
JP2002003420A (en) * | 2000-06-27 | 2002-01-09 | Mitsubishi Gas Chem Co Inc | Method for producing polyol |
JP4635300B2 (en) * | 2000-06-27 | 2011-02-23 | 三菱瓦斯化学株式会社 | Method for producing polyol |
JP4691756B2 (en) * | 2000-06-27 | 2011-06-01 | 三菱瓦斯化学株式会社 | Production method of polyol |
US7461617B2 (en) | 2005-01-20 | 2008-12-09 | Honda Motor Co., Ltd. | Engine-driven work machine |
Also Published As
Publication number | Publication date |
---|---|
JPS582209B2 (en) | 1983-01-14 |
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