Organic compounds -- part of the class 532-570 series – Organic compounds – Azo
Patent
1987-09-25
1989-10-10
Higel, Floyd D.
Organic compounds -- part of the class 532-570 series
Organic compounds
Azo
534573, 534582, 534605, 534887, 564163, C09B 4402, C09B 4408, D06P 141, D06P 358
Patent
active
048733199
ABSTRACT:
Disazo dyes which are suitable for dyeing and printing, especially of paper of all kinds. The dyes correspond to the formula ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are each an alkyl radical, A is an alkylene radical, n is 1 or 2, V, X, Y and Z are nonionic substituents customarily in azo dyes, K is a pyrimidine coupling and An is an anion.
REFERENCES:
patent: 2130358 (1938-09-01), McNally et al.
patent: 2216446 (1940-10-01), McNally et al.
patent: 3341512 (1967-09-01), Wegmuller et al.
patent: 3341514 (1967-09-01), Entschel et al.
patent: 4062836 (1977-12-01), Liechti et al.
patent: 4273707 (1981-06-01), Pedrazzi
Ciba-Geigy Corporation
Higel Floyd D.
McC. Roberts Edward
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