Process for preparing azo dyes containing A2- (arylsulphonylamin

Details Process for preparing azo dyes containing A2- (arylsulphonylamin Process for preparing azo dyes containing A2- (arylsulphonylamin

1995-06-06

1997-06-10

Powers, Fiona T.

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

Organic compounds

Azo

534602, 534707, 534794, 544297, C09B 3900, C09B 4300

Patent

active

056376782

ABSTRACT:
The invention provides a process for the production of azodyes and their derivatives by diazotization and coupling reactions and optionally further modification reactions, wherein a compound of formula ##STR1## in which E signifies an aromatic bivalent radical,

REFERENCES:
patent: 1606209 (1926-11-01), Montmollin et al.
patent: 2430439 (1947-11-01), Stanley et al.
patent: 2746951 (1956-05-01), Taube et al.
patent: 3102111 (1963-08-01), Csermely et al.
patent: 4962191 (1990-10-01), Puntener et al.

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