Method of preparing polyaminopolyphenylmethanes

Details Method of preparing polyaminopolyphenylmethanes Method of preparing polyaminopolyphenylmethanes

1980-09-17

1981-08-18

Hines, Robert V.

Organic compounds -- part of the class 532-570 series

Organic compounds

Amino nitrogen containing

C07C 8518

Patent

active

042848164

ABSTRACT:
Covers a method of preparing diaminodiphenylmethanes and higher homologues thereof which comprises the step of condensing aniline and formaldehyde in the presence of a tungsten silicide catalyst.

REFERENCES:
patent: 4036880 (1977-07-01), Marquis et al.
patent: 4052456 (1977-10-01), Marquis et al.
patent: 4053513 (1977-10-01), Marquis et al.

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