JPS5562032A - Preparation of hydroquinone - Google Patents
Preparation of hydroquinoneInfo
- Publication number
- JPS5562032A JPS5562032A JP13316678A JP13316678A JPS5562032A JP S5562032 A JPS5562032 A JP S5562032A JP 13316678 A JP13316678 A JP 13316678A JP 13316678 A JP13316678 A JP 13316678A JP S5562032 A JPS5562032 A JP S5562032A
- Authority
- JP
- Japan
- Prior art keywords
- oxidation
- reaction
- isopropenylphenol
- oxidizing agent
- temp
- 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.)
- Pending
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To obtain the high purity title compound, useful as a photographic developer etc., in high yield, by the reaction of p-isopropenylphenol, a solvent, a strong acid and an oxidizing agent at a specific reaction temp. followed by aging, thereby enabling the control of the oxidation temp.
CONSTITUTION: (A)p-Isopropenylphenol solution treated with a high b.p. polar solvent hardly soluble in water, e.g. octanol, (B) a strong acid, e.g. sulfuric acid, and (C) H2O2 or an organic peroxide as an oxidizing agent, are fed to an oxidation reactor kept at ≥25°C, and the oxidation is carried out at 28W50°C. The reaction product is aged at 30W50°C to complete the decomposition of the (A) component to hydroquinone and acetone. The reaction can be carried out continuously without interruption at an oxidation yield of as high as ≥90%.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13316678A JPS5562032A (en) | 1978-10-31 | 1978-10-31 | Preparation of hydroquinone |
US06/086,666 US4258219A (en) | 1978-10-27 | 1979-10-19 | Process for producing hydroquinone |
DE19792943428 DE2943428A1 (en) | 1978-10-27 | 1979-10-26 | METHOD FOR PRODUCING HYDROQUINONE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13316678A JPS5562032A (en) | 1978-10-31 | 1978-10-31 | Preparation of hydroquinone |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5562032A true JPS5562032A (en) | 1980-05-10 |
Family
ID=15098218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13316678A Pending JPS5562032A (en) | 1978-10-27 | 1978-10-31 | Preparation of hydroquinone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5562032A (en) |
-
1978
- 1978-10-31 JP JP13316678A patent/JPS5562032A/en active Pending
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