Anthraquinone dyestuffs

Anthraquinone dyestuffs of the formula ##SPC26##

• wherein
• R comprises hydrogen;
• unsubstituted straight chain branched alkyl radicals having 1-9 carbon atoms;
• or C.sub.1 -C.sub.4 alkyl radicals substituted by hydroxyl, nitrile, C.sub.1 -C.sub.8 alkoxy, C.sub.1 -C.sub.8 alkyl mercapto, C.sub.1 -C.sub.6 dialkylamino;
• cyclohexylamino;
• phenyloxy wherein the phenyl group is unsubstituted or substituted with C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 -alkylmercapto or halogen;
• phenylmercapto wherein the phenyl group is unsubstituted or substituted with C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylmercapto, or halogen;
• napthyloxy, wherein the naphthyl group is substituted or unsubstituted with C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkyl mercapto, or halogen;
• or napthylmercapto wherein the napthyl group is substituted or unsubstituted with C.sub.1 -C.sub.8 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylmercapto, or halogen;
• Z comprises an alkylene radical having 2-6 carbon atoms in the main chain;
• Ac is UV wherein U is --CO--, --SO.sub.2 --, --CO.sub.2 -- or --CO--NH--, and
• V is alkyl or alkenyl having 1-17 carbon atoms unsubstituted or substituted with a lower alkoxy or a phenoxy group or with halogen or with nitrile;
• cycloalkyl;
• phenyl;
• phenyl substituted with halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylmercapto, nitrile, phenyl, or cyclohexyl;
• napthyl;
• napthyl substituted with halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, C.sub.1 -C.sub.4 alkylmercapto, nitrile, phenyl, or cyclohexyl;
• or hydrogen and wherein the nucleus A is not further substituted;
• with the proviso that V can only be hydrogen if U is --CO-- or --CONH--. .