Benzoxanthene and benzothioxanthene dicarboxylic acid imide dyestuffs and process for their manufacture
AssigneeHoechst Aktiengesellschaft
InventorsOtto Fuchs, Helmut Troster
Life of this patent
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Abstract
Benzoxanthene- and benzothioxanthene-dicarboxylic acid imide dyestuffs of the general formula ##SPC1## Wherein X is oxygen or sulfur, R is amino which is substituted by one or two members of the group of alkyl, cyclohexyl, benzyl, acyl, phenyl, .beta.-cyanoethyl, .beta.-hydroxyethyl, sulfamidophenyl, benzoyl, dichlorobenzoyl, sulfamidobenzoyl, carboxamidophenyl, phenylsulfonyl sulfamidodichlorobenzoyl, chlorophenyl, phenoxyacetyl lower alkylsulfamidobenzoyl and benzimidazdyl, R.sub.1 and R.sub.2 are hydrogen chlorine, bromine, cyano, lower carbalkoxy, lower alkyl, lower alkoxy and phenyl, R.sub.3 and R.sub.4 are hydrogen, lower alkoxy and lower hydroxy alkoxy.
Claims7
A benzoxanthene- or benzothioxanthene- dicarboxylic acid amino-imide dyestuff of the formula ##SPC14##
- wherein X is O or S, R.sub.1 is hydrogen, chlorine, bromine, lower alkyl or lower alkoxy, R.sub.2 is hydrogen, chlorine, bromine, lower alkyl, lower alkoxy, lower carbalkoxy or phenyl, R.sub.1 and R.sub.2 not being adjacent t.butyl groups, R.sub.3 and R.sub.4 each is hydrogen, lower alkoxy or hydroxy lower alkoxy, R.sub.5 is hydrogen or, when R.sub.6 is acetyl, acetyl and R.sub.6 is cyclohexyl, lower alkanoyl, phenyl lower alkanoyl, phenoxy lower alkanoyl, cyano lower alkyl, hydroxy lower alkyl, phenyl sulfonyl, benzoyl, dichlorobenzoyl, sulfonamido-benzoyl, carbonamido-benzoyl, sulfonamido-dichlorobenzoyl, lower alkyl-sulfonamidobenzoyl or sulfonamido-benzimidazolyl.
Dependencies are inferred from the claim text.