JPS57175148A - Preparation of 2-methyl-2,4-bis-(4-aminophenyl) pentane - Google Patents
Preparation of 2-methyl-2,4-bis-(4-aminophenyl) pentaneInfo
- Publication number
- JPS57175148A JPS57175148A JP6064681A JP6064681A JPS57175148A JP S57175148 A JPS57175148 A JP S57175148A JP 6064681 A JP6064681 A JP 6064681A JP 6064681 A JP6064681 A JP 6064681A JP S57175148 A JPS57175148 A JP S57175148A
- Authority
- JP
- Japan
- Prior art keywords
- mixture
- compound shown
- isomers
- hydrogen
- melting point
- 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
Abstract
PURPOSE: To obtain advantageously the titled compound useful as an intermediate for a coating compound, etc., having high solvent solubility and a low melting point, by bringing a diamine or its mixture into contact with hydrogen in the presence of an organic solvent and a hydrogenation catalyst in a specific range of temperature.
CONSTITUTION: A compound shown by the formulaIor formula II or a mixture of their isomers is brought into contact with hydrogen at 10°C (preferably about room temperature) W150°C in the presence of an organic solvent (e.g., methanol, toluene, ketone, etc.) and a hydrogenation catalyst (preferably Pd catalyst), to give the desired compound shown by the formula III. When the compound shown by the formula III is used instead of common diaminodiphenylmethane, a prepared maleimide has high solvent solubility, is handled easily because of its low melting point, and has improved resin properties. The raw material diamine is a mixture of isomers of p-isopropenylaniline dimers, and advantageously used in the reaction directly.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6064681A JPS57175148A (en) | 1981-04-23 | 1981-04-23 | Preparation of 2-methyl-2,4-bis-(4-aminophenyl) pentane |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6064681A JPS57175148A (en) | 1981-04-23 | 1981-04-23 | Preparation of 2-methyl-2,4-bis-(4-aminophenyl) pentane |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS57175148A true JPS57175148A (en) | 1982-10-28 |
Family
ID=13148297
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6064681A Pending JPS57175148A (en) | 1981-04-23 | 1981-04-23 | Preparation of 2-methyl-2,4-bis-(4-aminophenyl) pentane |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS57175148A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51136828A (en) * | 1975-05-21 | 1976-11-26 | Teijin Ltd | Plant growth regulator |
JPS5626849A (en) * | 1979-08-14 | 1981-03-16 | Mitsui Toatsu Chem Inc | P-isopropenylaniline dimer and its preparation |
-
1981
- 1981-04-23 JP JP6064681A patent/JPS57175148A/en active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51136828A (en) * | 1975-05-21 | 1976-11-26 | Teijin Ltd | Plant growth regulator |
JPS5626849A (en) * | 1979-08-14 | 1981-03-16 | Mitsui Toatsu Chem Inc | P-isopropenylaniline dimer and its preparation |
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