Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Patent
1980-09-22
1981-08-18
Hines, Robert V.
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
C07C 8518
Patent
active
042848156
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 boride or sulfide 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.
Gipson Robert M.
Marquis Edward T.
Watts, Jr. Lewis W.
Bailey James L.
Hines Robert V.
Kulason Robert A.
Ries Carl G.
Texaco Inc.
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