JPS55141439A - Preparation of unsaturated diester - Google Patents

Preparation of unsaturated diester

Info

Publication number
JPS55141439A
JPS55141439A JP4974779A JP4974779A JPS55141439A JP S55141439 A JPS55141439 A JP S55141439A JP 4974779 A JP4974779 A JP 4974779A JP 4974779 A JP4974779 A JP 4974779A JP S55141439 A JPS55141439 A JP S55141439A
Authority
JP
Japan
Prior art keywords
acetic acid
unsaturated diester
column
preparation
reactor
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.)
Granted
Application number
JP4974779A
Other languages
Japanese (ja)
Other versions
JPS5827780B2 (en
Inventor
Yoshinori Yoshida
Hironobu Shinohara
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.)
JSR Corp
Original Assignee
Japan Synthetic Rubber Co Ltd
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 Japan Synthetic Rubber Co Ltd filed Critical Japan Synthetic Rubber Co Ltd
Priority to JP54049747A priority Critical patent/JPS5827780B2/en
Publication of JPS55141439A publication Critical patent/JPS55141439A/en
Publication of JPS5827780B2 publication Critical patent/JPS5827780B2/en
Expired 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 improve the recycling efficiency of acetic acid and the economy of the process for the preparation of the title compound by the vapor phase reaction of a conjugated diene compound, acetic acid, and oxygen, by distilling and separating the unreacted acetic acid contained in the reaction product mixture with a specific process.
CONSTITUTION: In the preparation of an unsaturated diester by the vapor-phase reaction of a conjugated diene compound such as butadiene, acetic acid and oxygen in the presence of a solid catalyst, the reaction product mixture is introduced to the first distillation column to separate water, and the bottom liquid composed mainly of the unreacted acetic acid and the unsaturated diester is discharged from the bottom of the column. The temperature and the pressure of the column bottom are pref. maintained at ≤180°C and about 0.5W5kg/cm2 respectively. The bottom liquid is fed to an acetic acid vaporizer installed before the reactor, and the vaporized acetic acid is fed to the reactor. Crude unsaturated diester taken out from the bottom of the acetic acid vaporizer is introduced into the second distillation column, and pure unsaturated diester is extracted from the bottom of the column.
COPYRIGHT: (C)1980,JPO&Japio
JP54049747A 1979-04-24 1979-04-24 Method for producing unsaturated diester Expired JPS5827780B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP54049747A JPS5827780B2 (en) 1979-04-24 1979-04-24 Method for producing unsaturated diester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54049747A JPS5827780B2 (en) 1979-04-24 1979-04-24 Method for producing unsaturated diester

Publications (2)

Publication Number Publication Date
JPS55141439A true JPS55141439A (en) 1980-11-05
JPS5827780B2 JPS5827780B2 (en) 1983-06-11

Family

ID=12839768

Family Applications (1)

Application Number Title Priority Date Filing Date
JP54049747A Expired JPS5827780B2 (en) 1979-04-24 1979-04-24 Method for producing unsaturated diester

Country Status (1)

Country Link
JP (1) JPS5827780B2 (en)

Also Published As

Publication number Publication date
JPS5827780B2 (en) 1983-06-11

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