Azo dyes from a 5-aminopyrazole bearing 1 to 2 sulfated hydroxya

Details Azo dyes from a 5-aminopyrazole bearing 1 to 2 sulfated hydroxya Azo dyes from a 5-aminopyrazole bearing 1 to 2 sulfated hydroxya

1979-12-05

1981-11-17

Higel, Floyd D.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260152, 260157, 260158, 260162, 260163, 260154, C09B 29036, C09B 2909, C09B 2932, C09B 2936

Patent

active

043010709

ABSTRACT:
This invention relates to azo dyes in which the diazotized amino component bears 1 or 2 sulfated hydroxyalkoxycarbonyl or N-(hydroxyalkyl)carbamoyl groups on its ring. These dyes have excellent dyeing properties on polyamide fibers and also impart color to cellulose acetate fibers and wool.
The dyes correspond to the formula: ##STR1## wherein when n is 1, R.sup.1 is selected from hydrogen, alkyl, aryl, alkylthio, carbamoyl, alkylcarbamoyl, acyl, cyanoalkyl, and halogen; R is selected from hydrogen, alkyl, aryl, acyl, alkylsulfonyl, arylsulfonyl alkylsulfamoyl, arylsulfamoyl, alkyl substituted with alkoxy, cyano, or halogen, and aryl substituted with alkoxy, halogen, or cyano; X' is O, NH, N(alkyl)--or N(aryl)--; Z is selected from straight- or branched-chain alkylene which may be substituted, for example, with phenyl, halogen, OSO.sub.3 M, alkoxy, aryloxy and the like; M is H, Na, K or NH.sub.4 ; n is 1 or 2; and the coupler C is selected from a variety of couplers including anilines, tetrahydroquinolines, phenols and the like.

REFERENCES:
patent: 2670265 (1954-02-01), Heyna et al.
patent: 2773863 (1956-12-01), Bolliger
patent: 2790172 (1957-04-01), Rudner
patent: 3114754 (1963-12-01), Lodge et al.
patent: 3232927 (1966-02-01), Randall et al.
patent: 3531459 (1970-09-01), Chiddix et al.
patent: 3957751 (1976-05-01), Bauer et al.
patent: 3998805 (1976-12-01), Koller et al.
patent: 4119623 (1978-10-01), Hugl et al.

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