Thiophen-2-ylazopyrazole compounds as colorants for textile fibe

Details Thiophen-2-ylazopyrazole compounds as colorants for textile fibe Thiophen-2-ylazopyrazole compounds as colorants for textile fibe

1984-03-19

1986-02-04

Higel, Floyd D.

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

Organic compounds

Azo

534560, 534590, 534740, C09B 29033, C09B 2936, D06P 326, D06P 336

Patent

active

045687382

ABSTRACT:
Thiophen-2-ylazopyrazole dyes useful for dyeing polyesters, cellulose acetate esters, and polyamides in fast yellow shades have the general formula: ##STR1## wherein: X is alkyl, allyloxy, alkoxy, aryl, aryloxy, amino, alkylamino, arylamino, cyclohexyloxy,, thienyl, cycloalkylamino, N,N-dialkylamino, or N-alkyl-N-arylamino; Y is hydrogen, alkyl, or aryl; Z is alkyl, aryl, alkylsulfonyl, 2-benzothiazolyl, cyano or COX; R and R.sub.1 are alkyl or aryl; R.sub.2 is hydrogen, alkyl, aryl, acyl, benzothiazolyl, pyridyl, sulfolanyl, quinolyl, thiocarbamyl, carbamyl, alkoxycarbonyl, aroyl, aryl-carbamyl and alkanoyl; and wherein the hydrocarbon moieties of the above radicals may be substituted with up to three of --OH, alkoxy, hydroxyalkoxy, carbamyl, and similar groups conventionally used in the azo dye art.

REFERENCES:
patent: 2832761 (1958-04-01), Straley et al.
patent: 4301070 (1981-11-01), Giles et al.

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