JPS57209283A - Preparation of decarboxylative condensation product of alicyclic 1,2-dicarboxylic acid or its anhydride - Google Patents
Preparation of decarboxylative condensation product of alicyclic 1,2-dicarboxylic acid or its anhydrideInfo
- Publication number
- JPS57209283A JPS57209283A JP9416481A JP9416481A JPS57209283A JP S57209283 A JPS57209283 A JP S57209283A JP 9416481 A JP9416481 A JP 9416481A JP 9416481 A JP9416481 A JP 9416481A JP S57209283 A JPS57209283 A JP S57209283A
- Authority
- JP
- Japan
- Prior art keywords
- dicarboxylic acid
- anhydride
- condensation product
- alicyclic
- decarboxylative condensation
- 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)
- Epoxy Resins (AREA)
Abstract
PURPOSE: To prepare the novel decarboxylative condensation product of the titled compound useful as a curing agent of epoxy resin, in high yield, by heating a saturated alicyclic 1,2-dicarboxylic acid anhydride in the presence of a basic catalyst.
CONSTITUTION: The novel decarboxylative condensation product of a saturated alicyclic 1,2-dicarboxylic acid anhydride of e.g. formula II (R5WR11 are H or 1W5C alkyl) can be prepared by heating a saturated alicyclic 1,2-dicarboxylic acid anhydride of e.g. formulaI(R1WR4 are H or 1W5C alkyl)(e.g. hexahydrophthalic anhydride, 3-methyl-hexahydrophthalic anhydride, etc.) in the presence of a basic catalyst[e.g. 1,8-diaza-bicyclo(5,4,0)undecene-7;2-ethyl-4-methylimidazole]. The objective compound can be used as an epoxy resin hardener having low cure shrinkage and giving a cured product with low water absorption, etc.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9416481A JPS5924153B2 (en) | 1981-06-17 | 1981-06-17 | Method for producing decarboxylated condensate of saturated alicyclic-1,2-dicarboxylic anhydride |
US06/388,244 US4491667A (en) | 1981-06-17 | 1982-06-14 | Hexahydrophthalides |
EP82105304A EP0067457B1 (en) | 1981-06-17 | 1982-06-16 | Lactone and process for production thereof |
DE8282105304T DE3263516D1 (en) | 1981-06-17 | 1982-06-16 | Lactone and process for production thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9416481A JPS5924153B2 (en) | 1981-06-17 | 1981-06-17 | Method for producing decarboxylated condensate of saturated alicyclic-1,2-dicarboxylic anhydride |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS57209283A true JPS57209283A (en) | 1982-12-22 |
JPS5924153B2 JPS5924153B2 (en) | 1984-06-07 |
Family
ID=14102721
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9416481A Expired JPS5924153B2 (en) | 1981-06-17 | 1981-06-17 | Method for producing decarboxylated condensate of saturated alicyclic-1,2-dicarboxylic anhydride |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5924153B2 (en) |
-
1981
- 1981-06-17 JP JP9416481A patent/JPS5924153B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS5924153B2 (en) | 1984-06-07 |
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