JPS5583733A - Preparation of highly pure benzenepolycarboxylic acid ester - Google Patents

Preparation of highly pure benzenepolycarboxylic acid ester

Info

Publication number
JPS5583733A
JPS5583733A JP15797978A JP15797978A JPS5583733A JP S5583733 A JPS5583733 A JP S5583733A JP 15797978 A JP15797978 A JP 15797978A JP 15797978 A JP15797978 A JP 15797978A JP S5583733 A JPS5583733 A JP S5583733A
Authority
JP
Japan
Prior art keywords
benzenepolycarboxylic acid
highly pure
benzenepolycarboxylic
acid
ester
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
JP15797978A
Other languages
Japanese (ja)
Other versions
JPS6031817B2 (en
Inventor
Koichi Abe
Takeshi Watanabe
Satomi Ono
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.)
Mitsubishi Gas Chemical Co Inc
Original Assignee
Mitsubishi Gas Chemical Co 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 Mitsubishi Gas Chemical Co Inc filed Critical Mitsubishi Gas Chemical Co Inc
Priority to JP15797978A priority Critical patent/JPS6031817B2/en
Publication of JPS5583733A publication Critical patent/JPS5583733A/en
Publication of JPS6031817B2 publication Critical patent/JPS6031817B2/en
Expired legal-status Critical Current

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

PURPOSE: To prepare a highly pure benzenepolycarboxylic acid ester by dissolving and removing an alkali metal salt of the above acid obtained as an intermediate prepared by the esterification of the benzenepolycarboxylic acid or its anhydride with a 7W11C aliphatic alcohol, in a specific solvent.
CONSTITUTION: A benzenepolycarboxylic acid having three or four carboxyl groups in the molecule, or its anhydride, is esterified with a 7W11C aliphatic monohydric alcohol (e.g. n-octanol, etc.) in the presence of a catalyst, e.g. sulfuric acid, etc. The reaction product is neutralized with an aqueous alkali solution and the excess raw material alcohol is removed. The esterification intermediate, i.e. an alkali metal of the benzenepolycarboxylic acid, etc. dissolved in the ester layer is eliminated by washing the layer with a water-containing lower aliphatic alcohol, e.g. methanol, etc., to give the highly pure benzenepolycarboxylic acid ester. The amount of the solvent is 0.1W10 times on the basis of the crude ester.
COPYRIGHT: (C)1980,JPO&Japio
JP15797978A 1978-12-21 1978-12-21 Production method of high purity benzene polycarboxylic acid ester Expired JPS6031817B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15797978A JPS6031817B2 (en) 1978-12-21 1978-12-21 Production method of high purity benzene polycarboxylic acid ester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15797978A JPS6031817B2 (en) 1978-12-21 1978-12-21 Production method of high purity benzene polycarboxylic acid ester

Publications (2)

Publication Number Publication Date
JPS5583733A true JPS5583733A (en) 1980-06-24
JPS6031817B2 JPS6031817B2 (en) 1985-07-24

Family

ID=15661590

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15797978A Expired JPS6031817B2 (en) 1978-12-21 1978-12-21 Production method of high purity benzene polycarboxylic acid ester

Country Status (1)

Country Link
JP (1) JPS6031817B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62183714U (en) * 1986-05-15 1987-11-21
JPH0421289Y2 (en) * 1987-04-10 1992-05-15
JPH02139518U (en) * 1989-04-25 1990-11-21

Also Published As

Publication number Publication date
JPS6031817B2 (en) 1985-07-24

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