JPS54160332A - Isomerization of methyl-delta4-tetrahydrophthalic anhydride - Google Patents
Isomerization of methyl-delta4-tetrahydrophthalic anhydrideInfo
- Publication number
- JPS54160332A JPS54160332A JP6835578A JP6835578A JPS54160332A JP S54160332 A JPS54160332 A JP S54160332A JP 6835578 A JP6835578 A JP 6835578A JP 6835578 A JP6835578 A JP 6835578A JP S54160332 A JPS54160332 A JP S54160332A
- Authority
- JP
- Japan
- Prior art keywords
- methyl
- tetrahydrophthalic anhydride
- mixture
- delta4
- isomerization
- 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
Links
Landscapes
- Furan Compounds (AREA)
Abstract
PURPOSE: To obtain liquid isomers of the title compound suitable for components in unsaturated polyester resins, and epoxy resin hardeners, by heat-treating a methyl-Δ4-tetrahydrophthalic anhydride mixture in the presence of a basic metallic oxide as a catalyst.
CONSTITUTION: A methyl-Δ4-tetrahydrophthalic anhydride mixture is heat-treated in the presence of a basic metallic oxide, e.g. an alkaline earth metal oxide, particularly calcium oxide, at 130W300°C, preferably 150W250°C to give isomers. The mixture preferably comprises 100W20 wt.% of 3-methyl-Δ4-tetrahydrophthalic anhydride and 0W80wt.% of 4-methyl-Δ4-tetrahydrophthalic anhydride.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6835578A JPS5854146B2 (en) | 1978-06-08 | 1978-06-08 | Method for isomerizing methyl↓-delta↓-4↓-tetrahydrophthalic anhydride |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6835578A JPS5854146B2 (en) | 1978-06-08 | 1978-06-08 | Method for isomerizing methyl↓-delta↓-4↓-tetrahydrophthalic anhydride |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54160332A true JPS54160332A (en) | 1979-12-19 |
JPS5854146B2 JPS5854146B2 (en) | 1983-12-02 |
Family
ID=13371416
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6835578A Expired JPS5854146B2 (en) | 1978-06-08 | 1978-06-08 | Method for isomerizing methyl↓-delta↓-4↓-tetrahydrophthalic anhydride |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5854146B2 (en) |
-
1978
- 1978-06-08 JP JP6835578A patent/JPS5854146B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5854146B2 (en) | 1983-12-02 |
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