JPS6456646A - Separation and recovery of 3,3',4,4'-bipenyltetracarboxylic acid tetraester - Google Patents

Separation and recovery of 3,3',4,4'-bipenyltetracarboxylic acid tetraester

Info

Publication number
JPS6456646A
JPS6456646A JP62212342A JP21234287A JPS6456646A JP S6456646 A JPS6456646 A JP S6456646A JP 62212342 A JP62212342 A JP 62212342A JP 21234287 A JP21234287 A JP 21234287A JP S6456646 A JPS6456646 A JP S6456646A
Authority
JP
Japan
Prior art keywords
phthalic acid
acid diester
tetraester
acid tetraester
compound
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
JP62212342A
Other languages
Japanese (ja)
Other versions
JPH0643372B2 (en
Inventor
Kazuhiko Hirozawa
Masaki Kashibe
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.)
Ube Corp
Original Assignee
Ube Industries 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 Ube Industries Ltd filed Critical Ube Industries Ltd
Priority to JP62212342A priority Critical patent/JPH0643372B2/en
Publication of JPS6456646A publication Critical patent/JPS6456646A/en
Publication of JPH0643372B2 publication Critical patent/JPH0643372B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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 separate and to obtain the titled compound useful as a raw material for producing aromatic polyimide directly from the dimerization reaction product of an o-phthalic acid diester by a simple operation, in high yield, in high purity and efficiently without hydrolysis. CONSTITUTION:A molecular oxygen-containing gas is fed to an o-phthalic acid diester under heating in the presence of a catalyst containing a bivalent palladium salt in a solventless state. Then a catalytic compound and an unreacted o-phthalic acid diester are removed from the reaction mixture containing the prepared aimed compound, 2,3,3',4'-biphenyltetracarboxylic acid tetraester, biphenyltricarboxylic acid triester and a high-boiling product. Then the rest are heated under reduced pressure, the reaction products except the high-boiling product are evaporated and recovered, then rectified at <=5Torr pressure of column head and <=320 deg.C temperature of column bottom to give 3,3',4,4'- biphenyltetracarboxylic acid tetraester as distillate.
JP62212342A 1987-08-26 1987-08-26 Method for separating and recovering 3,3 ', 4,4'-biphenyltetracarboxylic acid tetraester Expired - Lifetime JPH0643372B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62212342A JPH0643372B2 (en) 1987-08-26 1987-08-26 Method for separating and recovering 3,3 ', 4,4'-biphenyltetracarboxylic acid tetraester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62212342A JPH0643372B2 (en) 1987-08-26 1987-08-26 Method for separating and recovering 3,3 ', 4,4'-biphenyltetracarboxylic acid tetraester

Publications (2)

Publication Number Publication Date
JPS6456646A true JPS6456646A (en) 1989-03-03
JPH0643372B2 JPH0643372B2 (en) 1994-06-08

Family

ID=16620949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62212342A Expired - Lifetime JPH0643372B2 (en) 1987-08-26 1987-08-26 Method for separating and recovering 3,3 ', 4,4'-biphenyltetracarboxylic acid tetraester

Country Status (1)

Country Link
JP (1) JPH0643372B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102557934A (en) * 2012-01-17 2012-07-11 山东高新润农化学有限公司 Method for continuously synthesizing 3,3-dimethyl-4-pentenoic acid methylester

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051150A (en) * 1983-08-30 1985-03-22 Ube Ind Ltd Production of biphenyltetracarboxylic acid ester
JPS60102939A (en) * 1983-11-09 1985-06-07 Ube Ind Ltd Recovery and regeneration of palladium salt catalyst
JPS61172851A (en) * 1985-01-29 1986-08-04 Mitsubishi Chem Ind Ltd Method of dimerization of orthophthalic ester through oxidation and dehydrogenation

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6051150A (en) * 1983-08-30 1985-03-22 Ube Ind Ltd Production of biphenyltetracarboxylic acid ester
JPS60102939A (en) * 1983-11-09 1985-06-07 Ube Ind Ltd Recovery and regeneration of palladium salt catalyst
JPS61172851A (en) * 1985-01-29 1986-08-04 Mitsubishi Chem Ind Ltd Method of dimerization of orthophthalic ester through oxidation and dehydrogenation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102557934A (en) * 2012-01-17 2012-07-11 山东高新润农化学有限公司 Method for continuously synthesizing 3,3-dimethyl-4-pentenoic acid methylester

Also Published As

Publication number Publication date
JPH0643372B2 (en) 1994-06-08

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