JPS54151941A - Preparation of liquid dibasic acid anhydride - Google Patents
Preparation of liquid dibasic acid anhydrideInfo
- 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
Links
Landscapes
- Furan Compounds (AREA)
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
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)
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 |
-
1978
- 1978-05-18 JP JP5942378A patent/JPS54151941A/en active Pending
Cited By (3)
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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