Azo dyes with a diazo component of the 4-amino-7-nitrobenzisothiazole series and a coupling compound from the aminopyrazole or hydroxypyridone series
AssigneeBASF SE
InventorsGuenter Hansen, Helmut Hagen, Helmut Reichelt
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Abstract
Benzisothiazole-azo dyes useful for dyeing synthetic fiber materials have the formula ##STR1## where X is hydrogen, chlorine, bromine, cyano or nitro and K is a radical of the formula ##STR2## where R.sup.1 is substituted or unsubstituted C.sub.1 -C.sub.12 -alkyl, substituted or unsubstituted phenyl, C.sub.3 -C.sub.5 -alkenyl or C.sub.5 -C.sub.7 -cycloalkyl, R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl, R.sup.3 is hydrogen or methyl and R.sup.4 is hydrogen, cyano, carbamoyl or C.sub.1 -C.sub.4 -alkoxycarbonyl.
Claims9
A benzisothiazole-azo dye of the formula (I) ##STR16## where X is hydrogen, bromine, cyano or nitro, and K is a radical of the formula (II) ##STR17## where R.sup.1 is C.sub.1 -C.sub.12 alkyl;
- C.sub.1 -C.sub.12 alkyl substituted with hydroxy, C.sub.5 -C.sub.7 -cycloalkoxy, C.sub.1 -C.sub.4 -alkoxycarbonyl, C.sub.1 -C.sub.8 -alkanoyloxy, benzoyloxy, phenyl, furyl or thienyl;
- C.sub.1 -C.sub.4 alkyl substituted with C.sub.1 -C.sub.8 -alkoxy, C.sub.1 -C.sub.4 alkyl substituted with C.sub.1 -C.sub.4 -alkoxy further substituted with cyano, phenyl, hydroxy, hydroxy-C.sub.1 -C.sub.4 -alkoxy, C.sub.5 -C.sub.7 -cycloalkoxy, phenoxy, C.sub.1 -C.sub.4 -alkoxycarbonyl, C.sub.1 -C.sub.8 -alkanoyloxy, benzoyloxy, phenyl, furyl or thienyl;
- phenyl;
- phenyl substituted with C.sub.1 -C.sub.4 -alkyl, cyano, fluorine, chlorine, bromine or nitro;
- C.sub.3 -C.sub.5 -alkenyl or C.sub.5 -C.sub.7 -cycloalkyl;
- and
- R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl.
A method of dyeing synthetic fiber materials comprising dyeing a synthetic fiber material selected from the group consisting of polyamides, cellulose esters, polyesters, and blends of polyesters and cellulose fibers with a benzisothiazole-azo dye of the formula (I) ##STR18## where X is hydrogen, bromine, cyano or nitro;
- and K is a radical of the formula (II) ##STR19## where R.sup.1 is C.sub.1 -C.sub.12 alkyl;
- C.sub.1 -C.sub.12 alkyl substituted with hydroxy, C.sub.5 -C.sub.7 -cycloalkoxy, phenoxy, C.sub.1 -C.sub.4 -alkoxycarbonyl, C.sub.1 -C.sub.8 -alkanoyloxy, benzoyloxy, phenyl, furyl or thienyl;
- C.sub.1 -C.sub.4 alkyl substituted with C.sub.1 -C.sub.8 -alkoxy;
- C.sub.1 -C.sub.4 alkyl substituted with C.sub.1 -C.sub.4 -alkoxy further substituted with C.sub.1 -C.sub.4 -alkoxy, cyano, phenyl, hydroxy, hydroxy-C.sub.1 -C.sub.4 -alkoxy, C.sub.5 -C.sub.7 -cycloalkoxy, phenoxy, C.sub.1 -C.sub.4 -alkoxycarbonyl, C.sub.1 -C.sub.8 -alkanoyloxy, benzoyloxy, phenyl, furyl or thienyl;
- phenyl;
- phenyl substituted with C.sub.1 -C.sub.4 -alkyl, cyano, fluorine, chlorine, bromine or nitro;
- C.sub.3 -C.sub.5 -alkenyl or C.sub.5 -C.sub.7 -cycloalkyl;
- and
- R.sup.2 is hydrogen or C.sub.1 -C.sub.4 -alkyl.
Dependencies are inferred from the claim text.