Patent number: 4301070
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.
Type:
Grant
Filed:
December 5, 1979
Date of Patent:
November 17, 1981
Assignee:
Eastman Kodak Company
Inventors:
Ralph R. Giles, Max A. Weaver
Patent number: 4301068
Abstract: This invention relates to azo dyes in which the diazotized 2-aminothiophene bears 1 or 2 sulfated hydroxyalkoxycarbonyl or N-(hydroxyalkyl)carbamoyl groups on its ring. These dyes have excellent dyeing and fastness properties on polyamide fibers and also impart color to cellulose acetate fibers and wool.The dyes correspond to the general formula: ##STR1## wherein R.sup.1 is selected from hydrogen, alkyl, aryl, alkoxy, thiocyano, formyl, alkylthio, carbamoyl, alkoxycarbonyl, alkylcarbamoyl, acyl, aroyl, arylsulfonyl, alkylsulfonyl, sulfamoyl, SO.sub.2 NH(alkyl), SO.sub.2 N(dialkyl),alkylsulfonamido, acylamido, halogen, trifluoromethyl, SO.sub.3 (aryl) and arylazo; 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.
Type:
Grant
Filed:
December 5, 1979
Date of Patent:
November 17, 1981
Assignee:
Eastman Kodak Company
Inventors:
Ralph R. Giles, Max A. Weaver