JPS54151941A - Preparation of liquid dibasic acid anhydride - Google Patents

Preparation of liquid dibasic acid anhydride

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Publication number
JPS54151941A
JPS54151941A JP5942378A JP5942378A JPS54151941A JP S54151941 A JPS54151941 A JP S54151941A JP 5942378 A JP5942378 A JP 5942378A JP 5942378 A JP5942378 A JP 5942378A JP S54151941 A JPS54151941 A JP S54151941A
Authority
JP
Japan
Prior art keywords
acid anhydride
dibasic acid
preparation
liquid
methyl
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
JP5942378A
Other languages
Japanese (ja)
Inventor
Mototoshi Yamato
Yoshio Natsuume
Toshiaki Matsuo
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.)
Zeon Corp
Original Assignee
Nippon Zeon 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 Nippon Zeon Co Ltd filed Critical Nippon Zeon Co Ltd
Priority to JP5942378A priority Critical patent/JPS54151941A/en
Publication of JPS54151941A publication Critical patent/JPS54151941A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To obtain th title compound, by heat-treating a mixture of 3- and 4- methyl-Δ4-tetrahydrophthalic acid anhydrides in the presence of a tertiary amine at a specific temperature.
CONSTITUTION: A mixture of 3- and 4-methyl-Δ4-tetrahydrophthatic anhydrides at a weight ratio of 80:20W40:60, preferably 75:25W50:50, is heat-treated in the presence of a tertiary amine, e.g. trimethylamine, in the atmosphere of an inert gas, e.g. N2 or Ar2, at 60W300°C, preferably 80W250°C, to give a dibasic acid anhydride which is a liquid at 0°C.
EFFECT: Slight precipitation and improved storage stability.
USE: Unsaturated polyester components and hardeners for epoxy resins.
COPYRIGHT: (C)1979,JPO&Japio
JP5942378A 1978-05-18 1978-05-18 Preparation of liquid dibasic acid anhydride Pending JPS54151941A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5942378A JPS54151941A (en) 1978-05-18 1978-05-18 Preparation of liquid dibasic acid anhydride

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5942378A JPS54151941A (en) 1978-05-18 1978-05-18 Preparation of liquid dibasic acid anhydride

Publications (1)

Publication Number Publication Date
JPS54151941A true JPS54151941A (en) 1979-11-29

Family

ID=13112828

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5942378A Pending JPS54151941A (en) 1978-05-18 1978-05-18 Preparation of liquid dibasic acid anhydride

Country Status (1)

Country Link
JP (1) JPS54151941A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59109518A (en) * 1982-12-15 1984-06-25 Hitachi Chem Co Ltd Epoxy resin composition
JP2002155070A (en) * 2000-11-20 2002-05-28 Hitachi Chem Co Ltd Method for producing low-viscosity liquid acid anhydride and epoxy resin composition

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59109518A (en) * 1982-12-15 1984-06-25 Hitachi Chem Co Ltd Epoxy resin composition
JPS6257652B2 (en) * 1982-12-15 1987-12-02 Hitachi Chemical Co Ltd
JP2002155070A (en) * 2000-11-20 2002-05-28 Hitachi Chem Co Ltd Method for producing low-viscosity liquid acid anhydride and epoxy resin composition

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