Process for preparing aromatic polyamine mixtures

Details Process for preparing aromatic polyamine mixtures Process for preparing aromatic polyamine mixtures

C - Chemistry, Metallurgy

07

C

C07C 209/68 (2006.01) B01J 21/16 (2006.01) C07C 209/54 (2006.01) C07C 209/78 (2006.01) C07C 211/50 (2006.01) C07C 211/54 (2006.01)

Patent

CA 2281873

A process is disclosed for preparing aromatic polyamine mixtures which contain compounds of general formula (I) H2N-A-CH2-B-NH2, in which A and B stand for 1,4-phenylene radicals which can independently bear 1 to 4 substituents selected among C1-20-alkyl radicals and halogen atoms. A compound of general formula (IV) H-A-NH-CH2-HN-B-H and/or a compound of general formula (V) H-A-NH- CH2-B-NH2, in which A and B are substituted as above, are reacted at a temperature in a range from 20 ~C to 200 ~C in the presence of a catalyst which is made of one or several oxides of elements of the 3rd to the 10th group of the periodic table of elements and which can be acid activated.

Selon ce procédé de préparation de mélanges de polyamines aromatiques qui contiennent des composés de formule générale (I) H¿2?N-A-CH¿2?-B-NH¿2? dans laquelle A et B désignent des radicaux 1,4-phénylènes qui peuvent comprendre indépendamment les uns des autres 1 à 4 substituants sélectionnés parmi les radicaux alkyles-C¿1-20? et les atomes d'halogènes, on fait réagir un composé de formule générale (IV) H-A-NH-CH¿2?-HN-B-H et/ou un composé de formule générale (V) H-A-NH-CH¿2?-B-NH¿2?, dans laquelle A et B sont substitués comme décrit ci-dessus, à une température comprise entre 20 ·C et 200 ·C en présence d'un catalyseur constitué d'un ou de plusieurs oxydes d'éléments des 3e à 10e groupes de la table périodique des éléments, ce catalyseur pouvant être activé par un acide.

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