JPS5559126A - Preparation of hydroquinone - Google Patents
Preparation of hydroquinoneInfo
- Publication number
- JPS5559126A JPS5559126A JP13171278A JP13171278A JPS5559126A JP S5559126 A JPS5559126 A JP S5559126A JP 13171278 A JP13171278 A JP 13171278A JP 13171278 A JP13171278 A JP 13171278A JP S5559126 A JPS5559126 A JP S5559126A
- Authority
- JP
- Japan
- Prior art keywords
- isopropylphenol
- title compound
- strong acid
- solution
- concentration
- 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
Abstract
PURPOSE: To obtain the title compound in stable yield and high purity, by oxidizing p-isopropylphenol in the presence of a strong acid in a specific concentration or higher, with an oxidizing agent in an amount less than equimolar with the raw material, in a specific temperature range.
CONSTITUTION: A solution of p-isopropylphenol (P) in a high-boiling slightly water-soluble polar solvent is oxidized under specific conditions, to obtain the title compound. The solution, a strong acid in a concentration ≥55%, and hydrogen peroxide or organic peroxide (B) kept at a molar ratio of (B)W(P) of smaller than 1, preferably 0.90W0.99:1, especially 0.95W0.99:1, are added and mixed in a reaction system held at 25°C or higher, and oxidized at 28W50°C, preferably 30W 45°C.
EFFECT: Stable and safe temperature control and optimum for continuous processes.
USE: A photographic developer, an antioxidant for rubber, and a polymerization inhibitor.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13171278A JPS5559126A (en) | 1978-10-27 | 1978-10-27 | 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 |
---|---|---|---|
JP13171278A JPS5559126A (en) | 1978-10-27 | 1978-10-27 | Preparation of hydroquinone |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5559126A true JPS5559126A (en) | 1980-05-02 |
Family
ID=15064426
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13171278A Pending JPS5559126A (en) | 1978-10-27 | 1978-10-27 | Preparation of hydroquinone |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5559126A (en) |
-
1978
- 1978-10-27 JP JP13171278A patent/JPS5559126A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JPS5466636A (en) | Oxidation of m-diisopropylbenzene | |
JPS5559126A (en) | Preparation of hydroquinone | |
JPS5770834A (en) | Preparation of coenzyme q | |
JPS5559124A (en) | Preparation of hydroquinone | |
JPS5559125A (en) | Preparation of hydroquinone | |
JPS5562032A (en) | Preparation of hydroquinone | |
JPS5344528A (en) | Separation of dihalogenobenzenes | |
JPS5610135A (en) | Preparation of di-n-propylmalonic acid | |
JPS5756455A (en) | Preparation of hydroperoxide | |
JPS5490145A (en) | 4-chloromethylsulfonyl-2,6-dinitrohalogenobenzene derivative, and algicide containing the same | |
JPS5738742A (en) | Preparation of 1,4-dihydroanthraquinone | |
JPS54125620A (en) | Preparation of diazomethane derivative | |
JPS5452049A (en) | Preparation of high quality terephthalic acid | |
JPS57136547A (en) | Preparation of terephthalic acid for direct polymerization | |
JPS5547639A (en) | Preparation of alkylanthraquinone | |
JPS5646844A (en) | Preparation of biphenyltetracarboxylic acid ester | |
JPS5356612A (en) | Purification of maleic acid anhydride | |
JPS5581861A (en) | Nicotinamide derivative | |
JPS5448899A (en) | Polymerization of phenolic compound | |
JPS54112827A (en) | Preparation of 1,3,5-trichlorobenzene | |
JPS5640632A (en) | Preparation of methylglyoxal | |
JPS5466651A (en) | Preparation of o-(2,6-dichloroanilino)phenylacetic acid | |
JPS56166141A (en) | Preparation of phenoxybenzaldehyde | |
JPS5619000A (en) | 3beta. 25-dihydroxy-24-oxocholesta-5,7-diene derivative and its preparation | |
JPS55127330A (en) | Preparation of phenols |