JPS57175148A - Preparation of 2-methyl-2,4-bis-(4-aminophenyl) pentane - Google Patents

Preparation of 2-methyl-2,4-bis-(4-aminophenyl) pentane

Info

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
Application number
JP6064681A
Other languages
Japanese (ja)
Inventor
Teruyuki Nagata
Akihiro Tamaoki
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP6064681A priority Critical patent/JPS57175148A/en
Publication of JPS57175148A publication Critical patent/JPS57175148A/en
Pending legal-status Critical Current

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
JP6064681A 1981-04-23 1981-04-23 Preparation of 2-methyl-2,4-bis-(4-aminophenyl) pentane Pending JPS57175148A (en)

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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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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