Preparation of azo dyestuffs by diazotization and coupling in th

Details Preparation of azo dyestuffs by diazotization and coupling in th Preparation of azo dyestuffs by diazotization and coupling in th

1987-03-30

1989-01-03

Hegel, Floyd D.

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

Organic compounds

Radioactive metal containing

534575, 534582, 534583, 534735, 534753, 534771, 534772, 534773, 534787, 534792, 534795, 534850, 534856, 534887, C09B 4100, C09B 6748, C09B 6754

Patent

active

047958073

ABSTRACT:
Azo disperse dyestuffs are prepared by diazotization and coupling in an aqueous phase, the coupling being carried out in the presence of an ester of a lower aliphatic carboxylic acid.

REFERENCES:
patent: 3081314 (1963-03-01), Goel et al.
patent: 3325470 (1967-06-01), Ribka
patent: 3900459 (1975-08-01), Kawamura et al.
patent: 4207233 (1980-06-01), Seybold et al.
patent: 4376730 (1983-03-01), De Graaf

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