Process for producing 4-aminodiphenylamine

Details Process for producing 4-aminodiphenylamine Process for producing 4-aminodiphenylamine

1998-02-27

1999-07-20

Geist, Gary

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

Organic compounds

Amino nitrogen containing

564415, 564433, 564434, C07C20930

Patent

active

059257911

ABSTRACT:
4-aminodiphenylamines are produced by hydrogenating nitrobenzene with hydrogen in the presence of bases containing hydroxide and/or oxide groups and heterogeneous catalysts and in the presence of inert aprotic solvents at temperatures of 0 to 200.degree. C. and pressures of 0.1 to 150 bars.

REFERENCES:
patent: 4187248 (1980-02-01), Merten et al.
patent: 4187249 (1980-02-01), Maender et al.
patent: 4670595 (1987-06-01), Podder et al.
patent: 5117063 (1992-05-01), Stern
patent: 5420354 (1995-05-01), Malz
patent: 5608111 (1997-03-01), Stern
patent: 5739403 (1998-04-01), Reinartz
Kirk-Othmer, Encyclopedia of Chemical Technology, 4.sup.th edition, 1992, vol. 3, pp. 424-447, pp. 448-456.
Ullmann's Encyclopedia of Industrial Chemistry, 5.sup.th edition, vol. A3, 1985, pp. 91-111.

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