Surfactant improvement for para-aminophenol process

Details Surfactant improvement for para-aminophenol process Surfactant improvement for para-aminophenol process

1992-06-09

1994-05-17

Raymond, Richard L.

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

Organic compounds

Amino nitrogen containing

C07C21300

Patent

active

053129911

ABSTRACT:
The compound p-aminophenol is prepared by catalytically hydrogenating nitrobenzene in an acidic reaction medium containing an amine of the formula (I) ##STR1## wherein R represents an alkyl group having from 6 to about 20 carbon atoms; R.sub.1 and R.sub.2 are the same or different, and are represented by the formula --[(CH.sub.2).sub.m O].sub.n H, wherein m is an integer of from 1 to about 5 and n is an integer of from 1 to about 10.

REFERENCES:
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patent: 2765342 (1956-10-01), Spiegler
patent: 3383416 (1968-05-01), Benner
patent: 3535382 (1970-10-01), Brown et al.
patent: 4176138 (1979-11-01), Sathe
patent: 4307249 (1981-12-01), Derrenbacker
patent: 4885389 (1989-12-01), Lee et al.

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