JPS57181034A - Preparation of p-chlorobenzoic acid - Google Patents

Preparation of p-chlorobenzoic acid

Info

Publication number
JPS57181034A
JPS57181034A JP56064278A JP6427881A JPS57181034A JP S57181034 A JPS57181034 A JP S57181034A JP 56064278 A JP56064278 A JP 56064278A JP 6427881 A JP6427881 A JP 6427881A JP S57181034 A JPS57181034 A JP S57181034A
Authority
JP
Japan
Prior art keywords
chlorotoluene
chlorobenzoic acid
attain
specific
condition
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
JP56064278A
Other languages
Japanese (ja)
Inventor
Hajime Torigata
Kenji Nakaoka
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.)
Toray Industries Inc
Original Assignee
Toray Industries 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 Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP56064278A priority Critical patent/JPS57181034A/en
Publication of JPS57181034A publication Critical patent/JPS57181034A/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)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

PURPOSE: To obtain the titled compound having high purity, with a simple fractional distillation, by oxidizing p-chlorotoluene with an O2-containing gas in the presence of a specific catalyst and a specific amount of acetic acid under the condition to attain a specific conversion, removing the by-produced water from the system, and concentrating the reaction product liquid.
CONSTITUTION: p-Chlorotoluene is oxidized with an O2-containing gas using a catalyst composed mainly of Co, Mn and Br in the presence of 0.1W1.0pt.wt. of acetic acid per 1pt. of p-chlorotoluene under the condition to attain the p-chlorotoluene conversion of 20W70%. The total reaction pressure is 2W40atm and the oxygen partial pressure is selected to give the oxygen concentration in the exhaust gas from the reactor of 1W8vol%. p-Chlorobenzoic acid is isolated from the reaction mixture by removing the by-product water from the mixture before or after separating the produced solid p-chlorobenzoic acid. The residual liquid is recycled to the oxidation reaction system.
USE: Raw material of pesticides, pharmaceuticals, dyes, resins, etc.
COPYRIGHT: (C)1982,JPO&Japio
JP56064278A 1981-04-30 1981-04-30 Preparation of p-chlorobenzoic acid Pending JPS57181034A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56064278A JPS57181034A (en) 1981-04-30 1981-04-30 Preparation of p-chlorobenzoic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56064278A JPS57181034A (en) 1981-04-30 1981-04-30 Preparation of p-chlorobenzoic acid

Publications (1)

Publication Number Publication Date
JPS57181034A true JPS57181034A (en) 1982-11-08

Family

ID=13253589

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56064278A Pending JPS57181034A (en) 1981-04-30 1981-04-30 Preparation of p-chlorobenzoic acid

Country Status (1)

Country Link
JP (1) JPS57181034A (en)

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