Disperse dyes from 5-amino-4-halo-3-methylisothiazoles
AssigneeEastman Kodak Company
InventorsJean C. Fleischer, Gary T. Clark, Ronald J. Maner
Life of this patent
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Abstract
Disclosed are monoazo dyes derived from diazotized 5-amino-4-halo-3-methylisothiazoles and m-acylaminoaniline couplers. These dyes impart scarlet and red shades on nylon and polyester fibers and exhibit good fastness properties. The dyes are represented by the general formula: ##STR1## wherein R.sub.1 and R.sub.2 are each selected from lower alkyl, cycloalkyl, substituted cycloalkyl, or lower alkyl substituted with phenyl, cyano, sulfonamido, carboxamido, alkoxy, hydroxy, or an imide radical; R.sub.3 is lower alkyl, lower alkyl substituted as above, phenyl, or trifluoromethyl; and X is chlorine or bromine.
Claims3
Monoazo dyes of the general formula:
- ##STR14## wherein R.sub.1 and R.sub.2 are each selected from lower alkyl, cyclohexyl, and alkyl substituted with carbamoyl, sulfamoyl, --CN, phenyl, succinimido, --N(SO.sub.2 CH.sub.3)CH.sub.2 C.sub.6 H.sub.5, lower alkoxy, lower alkoxyalkoxy, lower alkanoylamino, hydroxy substituted lower alkoxy, hydroxy, phthalimido, ##STR15## and wherein only one of R.sub.1, and R.sub.2 can be unsubstituted alkyl;
- R.sub.3 is lower alkyl, lower alkyl substituted as above, phenyl, or trifluoromethyl;
- and X is chlorine or bromine.
Dependencies are inferred from the claim text.