Process for the preparation of stable aqueous solutions of anion

Details Process for the preparation of stable aqueous solutions of anion Process for the preparation of stable aqueous solutions of anion

1987-01-27

1990-06-12

Higel, Floyd D.

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

Organic compounds

Azo

534558, 534565, 534887, 534632, 534583, C07C11304, C09B 6726, D06P 106

Patent

active

049334360

ABSTRACT:
Azo dyes are obtained by diazotizing an aromatic amine and combining the resulting diazonium salt solution with a sulpho-containing coupling component when the sole acid donor used for the diazotization reaction--instead of the otherwise customary mineral or fatty acids--is a low molecular weight, nonsurfactantlike aromatic sulphonic acid.

REFERENCES:
patent: 4035350 (1977-07-01), Landler et al.

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