JPS5569529A - Continuous preparation of polyhydric phenol - Google Patents

Continuous preparation of polyhydric phenol

Info

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
Application number
JP14133978A
Other languages
Japanese (ja)
Inventor
Juichi Imamura
Koichi Takeuchi
Kiyoshi Nakatani
Kenji Odaka
Kazuo Sasaki
Takumi Iio
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OKISHIRAN KAGAKU KK
Mitsui Toatsu Chemicals Inc
National Institute of Advanced Industrial Science and Technology AIST
Original Assignee
OKISHIRAN KAGAKU KK
Agency of Industrial Science and Technology
Mitsui Toatsu Chemicals Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by OKISHIRAN KAGAKU KK, Agency of Industrial Science and Technology, Mitsui Toatsu Chemicals Inc filed Critical OKISHIRAN KAGAKU KK
Priority to JP14133978A priority Critical patent/JPS5569529A/en
Publication of JPS5569529A publication Critical patent/JPS5569529A/en
Pending legal-status Critical Current

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
JP14133978A 1978-11-16 1978-11-16 Continuous preparation of polyhydric phenol Pending JPS5569529A (en)

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)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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