JPS5569529A - Continuous preparation of polyhydric phenol - Google Patents
Continuous preparation of polyhydric phenolInfo
- Publication number
- JPS5569529A JPS5569529A JP14133978A JP14133978A JPS5569529A JP S5569529 A JPS5569529 A JP S5569529A JP 14133978 A JP14133978 A JP 14133978A JP 14133978 A JP14133978 A JP 14133978A JP S5569529 A JPS5569529 A JP S5569529A
- Authority
- JP
- Japan
- Prior art keywords
- phenol
- peroxide
- polyhydric phenol
- whole
- reaction zone
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
PURPOSE: To prepare a polyhydric phenol, continuously in high selectivity with suppressing formation of the higher polyhydroxyl compounds, by hydroxylating a phenol with the required amount of a peroxide introduced dividedly to two or more sites of the reaction zone.
CONSTITUTION: In the production of a polyhydric phenol by direct oxidation of a phenol with a peroxide, the required amount of the peroxide is dividedly added to the phenol fed into the reaction zone, at two or more sites of the reaction zone under the condition that the ratio of the amount of the phenol to that of the peroxide is higher than the ratio of the whole amount of the peroxide to that of the phenol. By this process, the formation of the higher polyhydroxyl compounds is suppressed and the polyhydric phenol is obtained in an increased selectivity. The molar ratio of the whole peroxide to the whole phenol is ≤0.3, preferably 0.05W0.08 and the concentration of the peroxide in the reaction materials is ≤5wt%, preferably ≤0.5wt%.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14133978A JPS5569529A (en) | 1978-11-16 | 1978-11-16 | Continuous preparation of polyhydric phenol |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14133978A JPS5569529A (en) | 1978-11-16 | 1978-11-16 | Continuous preparation of polyhydric phenol |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5569529A true JPS5569529A (en) | 1980-05-26 |
Family
ID=15289648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14133978A Pending JPS5569529A (en) | 1978-11-16 | 1978-11-16 | Continuous preparation of polyhydric phenol |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5569529A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4751333A (en) * | 1986-03-11 | 1988-06-14 | Degussa Aktiengesellschaft | Method for the preparation of trihydroxybenzenes |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5076031A (en) * | 1973-11-10 | 1975-06-21 | ||
JPS50130728A (en) * | 1974-04-04 | 1975-10-16 | ||
JPS50142519A (en) * | 1974-05-07 | 1975-11-17 | ||
JPS516933A (en) * | 1974-07-02 | 1976-01-20 | Ube Industries | Nikafuenooruruino seizohoho |
-
1978
- 1978-11-16 JP JP14133978A patent/JPS5569529A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5076031A (en) * | 1973-11-10 | 1975-06-21 | ||
JPS50130728A (en) * | 1974-04-04 | 1975-10-16 | ||
JPS50142519A (en) * | 1974-05-07 | 1975-11-17 | ||
JPS516933A (en) * | 1974-07-02 | 1976-01-20 | Ube Industries | Nikafuenooruruino seizohoho |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4751333A (en) * | 1986-03-11 | 1988-06-14 | Degussa Aktiengesellschaft | Method for the preparation of trihydroxybenzenes |
BE1001721A3 (en) * | 1986-03-11 | 1990-02-20 | Degussa | PROCESS FOR THE PREPARATION OF TRIHYDROXYBENZENES. |
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