Chemistry of carbon compounds – Miscellaneous organic carbon compounds – C-metal
Patent
1975-02-03
1976-12-28
Higel, Floyd D.
Chemistry of carbon compounds
Miscellaneous organic carbon compounds
C-metal
260156, 26032612R, C09B 2936, D06P 324
Patent
active
040001237
ABSTRACT:
Monoazo dyestuffs which in the form of the free acid correspond to the general formula ##STR1## wherein R.sub.0, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6 and R.sub.7 have the meaning given in the description and their use for the dyeing of natural and synthetic fibre materials, especially for dyeing polyamide fibres. Dyeings obtained distinguish themselves by very good fastness to light. Dyestuffs are absorbed well on polyamide fibres already in a neutral to weakly acid dye bath. By polyamide fibres there are here especially understood those from synthetic polyamides such as .EPSILON.-polycaprolactam, or condensation products of adipic acid and hexamethylenediamine.
REFERENCES:
patent: 978439 (1910-12-01), Dresse et al.
patent: 1113622 (1914-10-01), Hauptmann et al.
patent: 1835393 (1931-12-01), Hentrich et al.
patent: 3883502 (1975-05-01), Sommer et al.
United States Published Patent Application, B327,109, 1-28-1975, Wolfrum et al. 260-265.
Otten Hans Gunter
Sommer Richard
Wolfrum Gerhard
Bayer Aktiengesellschaft
Higel Floyd D.
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