Silver catalysts used to prepare polyaminopolyphenylmethanes

Details Silver catalysts used to prepare polyaminopolyphenylmethanes Silver catalysts used to prepare polyaminopolyphenylmethanes

1980-10-02

1981-08-25

Hines, Robert V.

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

Organic compounds

Amino nitrogen containing

564371, 564391, C07C 8518

Patent

active

042861071

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 silver tungstate catalyst.

REFERENCES:
patent: 4036880 (1977-07-01), Marquis et al.
patent: 4041078 (1977-08-01), Marquis et al.
patent: 4052456 (1977-10-01), Marquis et al.
patent: 4053513 (1977-10-01), Marquis et al.

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