METHOD FOR PREPARATION OF POLYAMINE

Japanese Patent JPS53111047

A

Process for obtaining polyarylamines of the diphenylalkane series, characterized in that To. Aromatic compounds bearing substituents α -halogen alkyl, carrying at least one nitro group in the ortho and/or para position with respect to the haloalkyl group, are reacted with arylamines which do not carry any hydrogen atom in ortho or para position with respect to to the amino group, or with arylamines which only do not carry a hydrogen atom in para position with respect to the amino group, to the corresponding nitrobenzylarilamines under formation of halogenated hydrogen, B. The halogenated hydrogen formed is separated as salt by neutralization with bases, C. The nitro groups of the condensation product obtained according to a) and b) is reduced in a manner known per se to amino groups, D. The product of reaction step c) is mixed with substitutable arylamines in the core, lighter than the arylamines to be used according to a), which have at least one hydrogen atom in the ortho and/or para position in the aromatic nucleus with respect to to the amino group, and/or the acid salts of such arylamines and, finally, And. The mixture obtained according to d) is transposed in the presence of water and acid catalysts to polyarylamines of the diphenylmethane series, simultaneously releasing the arylamine used according to a). (Machine-translation by Google Translate, not legally binding)

HARUTOMUUTO KUNEEFUERU

JP2288178A

September 28, 1978

March 02, 1978

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BAYER AG

C07C67/00; C07C211/50; C07C209/00; C07C209/10; C07C209/36; C07C209/54; (IPC1-7): C07C87/50

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