Process for the production of polyaryl amines containing...

Details Process for the production of polyaryl amines containing... Process for the production of polyaryl amines containing...

C - Chemistry, Metallurgy

08

G

260/597.5

C08G 73/02 (2006.01) B01D 11/00 (2006.01) C08G 8/16 (2006.01) C08G 12/00 (2006.01) C08G 12/08 (2006.01)

Patent

CA 1087633

ABSTRACT OF THE DISCLOSURE This invention is directed to a process for the production of polyaryl amines containing methylene bridges. These compounds are prepared from aryl amines and formalde- hyde in the presence of acids and water and the catalyst is simultaneously recovered. The polyaryl amine salt solutions produced by conventional methods are mixed with the starting aryl amines to form at least partially hetero- geneous systems, optionally after the addition of water and optionally in the presence of hydrophobic solvents. Polyaryl amines are exchanged by aryl amines to form on the one hand, mixtures of polyaryl amines and aryl amines and on the other hand, an aqueous solution of the acid in the form of a salt of the aryl amine.

264973

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