Bleaching and dyeing; fluid treatment and chemical modification – Reactive dye composition – process – or product – Alkylene sulfato – halotriazine – halodiazine,...
Patent
1979-07-16
1981-03-24
Clingman, A. Lionel
Bleaching and dyeing; fluid treatment and chemical modification
Reactive dye composition, process, or product
Alkylene sulfato, halotriazine, halodiazine,...
8641, 8681, 8918, 260185, C09B 6200, C09B 2700
Patent
active
042577705
ABSTRACT:
A dye composition comprising at least one disazo dye of the formula (I) expressed in the form of a free acid, ##STR1## wherein each X.sub.1 and X.sub.2 is --SO.sub.2 CH.sub.2 CH.sub.2 OCOCH.sub.3, --SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H or --SO.sub.2 CH.dbd.CH.sub.2, provided that at least one of X.sub.1 and X.sub.2 is --SO.sub.2 CH.sub.2 CH.sub.2 OCOCH.sub.3, and at least one disazo dye of the formula (II) expressed in the form of a free acid, ##STR2## Wherein each Y.sub.1 and Y.sub.2 is --SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H, --SO.sub.2 CH.dbd.CH.sub.2 or --SO.sub.2 CH.sub.2 CH.sub.2 OH, provided that one of Y.sub.1 and Y.sub.2 is --SO.sub.2 CH.sub.2 CH.sub.2 OSO.sub.3 H or --SO.sub.2 CH.dbd. CH.sub.2, is produced by diazotizing a mixture of 4-aminophenyl-.beta.-sulfatoethylsulfone and 4-aminophenyl-.beta.acetoxyethylsulfone in a weight ratio of 30 to 70: 70 to 30 with a nitrite, and coupling the resulting mixture of the diazonium salts with 1-amino-8-naphthol-3,6-disulfonic acid. The dye composition is suitable for dyeing natural or regenerated cellulosic fiber materials in black.
REFERENCES:
patent: 3114754 (1963-12-01), Lodge et al.
Vewkataraman, K, "The Chemistry of Synthetic Dyes", vol. VI, Academic Press, 1972, pp. 36-37; 46; 49; 50-51;259.
Colour Index, vol. 3, (Third Edition), C. I. Reactive Black 5, pp. 3, 5, 48.
Konishi Seizo
Koumura Suketsugu
Nishimura Nobuzi
Sawa Utazi
Tokieda Takemi
Clingman A. Lionel
Sumitomo Chemical Company Limited
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