Process of semicontinuously producing aniline condensed dyes

Details Process of semicontinuously producing aniline condensed dyes Process of semicontinuously producing aniline condensed dyes

Filed on

1976-06-07

Date issued

1977-11-01

Examiner

Higel, Floyd D.

Patent Class

Chemistry of carbon compounds

SubClass

Miscellaneous organic carbon compounds

SubSubClass

C-metal

Other Related Categories

23252R, C09B 5700, C09B 5900

Type

Patent

Status

active

Patent number

040565300

Description

ABSTRACT:
An aniline condensed dye is semicontinuously prepared from aniline and nitrobenzene (and/or alkylanilines, alkylnitrobenzenes, diazoaminobenzene and the like) in the presence of a catalyst such as hydrochloric acid and iron chloride by dividing a reaction system into two or more sections and maintaining each section at a different reaction temperature.

REFERENCES:
patent: 1988499 (1935-01-01), Kimmel

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