Process for the preparation of mixtures of polyamines of the...

Details Process for the preparation of mixtures of polyamines of the... Process for the preparation of mixtures of polyamines of the...

C - Chemistry, Metallurgy

08

G

260/597.5

C08G 12/08 (2006.01) B01J 27/10 (2006.01) C08G 8/16 (2006.01)

Patent

CA 1128068

Mo-1895 PU-075 LeA 19,337 PROCESS FOR THE PREPARATION OF MIXTURES OF POLYAMINES OF THE POLYAMINO-POLYARYL-POLYMETHYLENE TYPE ABSTRACT OF THE DISCLOSURE The instant invention is directed to a process for the preparation of mixtures of polyamines of the poly- amino-polyaryl-polymethylene type whereby the proportion of the ortho-substituted products are substantially in- creased. This increase is brought about by adding the acid catalyst to the aromatic amine/formaldehyde reaction mixture in two or more stages. Mo-1895

346211

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