JPS5645431A - Purification of 2,6-dimethylphenol - Google Patents
Purification of 2,6-dimethylphenolInfo
- Publication number
- JPS5645431A JPS5645431A JP12082979A JP12082979A JPS5645431A JP S5645431 A JPS5645431 A JP S5645431A JP 12082979 A JP12082979 A JP 12082979A JP 12082979 A JP12082979 A JP 12082979A JP S5645431 A JPS5645431 A JP S5645431A
- Authority
- JP
- Japan
- Prior art keywords
- water
- dimethylphenol
- crystallization
- crystals
- crude
- 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 seve the energy consumption and to improve the purity and the yield, in the purification of crude 2,6-dimethylphenol containing phenolic impurities, by carrying out the crystallization and separation in the presence of water of less than saturated concentration.
CONSTITUTION: A crude 2,6-dimethylphenol obtained by the reaction of phenols with methanol is heated to a temperature lower than the melting point of the system in the presence of water of less than saturated concentration. It is cooled slowly to 50W-20°C with or without agitation to precipitate the crystals of the titled compound. The amount of water in the system is 0.1W10wt%. It it is difficult to add a definite amount of water to the system because of handling requirements or time- dependent change in the reaction, the crystallization can be carried out by adding a large amount of water to the system, and after separating into two phases, removing the water phase.
EFFECT: The viscosity of the system is reduced by the addition of water, which results in the easy operation and the precipitation of crystals having proper diameters.
USE: Raw material of synthetic resin, etc.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12082979A JPS5645431A (en) | 1979-09-21 | 1979-09-21 | Purification of 2,6-dimethylphenol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12082979A JPS5645431A (en) | 1979-09-21 | 1979-09-21 | Purification of 2,6-dimethylphenol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5645431A true JPS5645431A (en) | 1981-04-25 |
| JPS636533B2 JPS636533B2 (en) | 1988-02-10 |
Family
ID=14795987
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12082979A Granted JPS5645431A (en) | 1979-09-21 | 1979-09-21 | Purification of 2,6-dimethylphenol |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5645431A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62117509A (en) * | 1985-11-15 | 1987-05-29 | 松下電器産業株式会社 | Rice cooker |
| JPS62120816A (en) * | 1985-11-20 | 1987-06-02 | 松下電器産業株式会社 | Rice cooker |
-
1979
- 1979-09-21 JP JP12082979A patent/JPS5645431A/en active Granted
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62117509A (en) * | 1985-11-15 | 1987-05-29 | 松下電器産業株式会社 | Rice cooker |
| JPS62120816A (en) * | 1985-11-20 | 1987-06-02 | 松下電器産業株式会社 | Rice cooker |
| JPH0349248B2 (en) * | 1985-11-20 | 1991-07-29 | Matsushita Electric Ind Co Ltd |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS636533B2 (en) | 1988-02-10 |
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