JPS54160332A - Isomerization of methyl-delta4-tetrahydrophthalic anhydride - Google Patents

Isomerization of methyl-delta4-tetrahydrophthalic anhydride

Info

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
Application number
JP6835578A
Other languages
Japanese (ja)
Other versions
JPS5854146B2 (en
Inventor
Mototoshi Yamato
Yoshio Natsuume
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 JP6835578A priority Critical patent/JPS5854146B2/en
Publication of JPS54160332A publication Critical patent/JPS54160332A/en
Publication of JPS5854146B2 publication Critical patent/JPS5854146B2/en
Expired legal-status Critical Current

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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
JP6835578A 1978-06-08 1978-06-08 Method for isomerizing methyl↓-delta↓-4↓-tetrahydrophthalic anhydride Expired JPS5854146B2 (en)

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)

Also Published As

Publication number Publication date
JPS5854146B2 (en) 1983-12-02

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