Water soluble monoazo dyes for nylon

Details Water soluble monoazo dyes for nylon Water soluble monoazo dyes for nylon

1978-07-26

1982-05-18

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260458C, 260507R, 260509, 260543R, 560 13, 564 86, C09B 2901, C09B 2930, D06P 139, D06P 324

Patent

active

043304680

ABSTRACT:
Water-soluble monoazo dyes for nylon having the formula: ##STR1## wherein ring A may optionally be substituted by halogen, trifluoromethyl, alkoxy, acylamino or alkyl having from 1 to 4 carbon atoms, R represents hydrogen or unbranched alkyl having from 1 to 4 carbon atoms, R.sup.1 represents hydrogen, alkyl or hydroxyalkyl, X represents unbranched alkyl having from 1 to 6 carbon atoms, cycloalkyl, halogen, nitro, trifluoromethyl, sulpho, vinylsulphonyl, hydroxyethylsulphonyl, sulphatoethylsulphonyl, --SO.sub.2 NHR.sup.2, wherein R.sup.2 represents hydrogen or alkyl having from 1 to 4 carbon atoms, or --COOR.sup.3 wherein R.sup.3 represents hydrogen, alkyl having from 1 to 7 carbon atoms, cycloalkyl or aryl, and n represents an integer of from 0 to 3.
The dyes are suitable for application to polyamide textile materials. They give a high degree of thermal stability and fastness to wet treatments and to light.

REFERENCES:
patent: 1854846 (1932-04-01), Knecht et al.
patent: 3284436 (1966-11-01), Frisch

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