Phenylalkylamino-styryl dyestuffs

Cationic styryl dyestuff of the formula ##STR184## wherein R'.sub.2 denotes C.sub.1 -C.sub.4 -alkyl, or benzyl or .alpha.- or .beta.-phenylethyl unsubstituted or substituted by 1-2 chlorine, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy groups, or cyclopentyl or cyclohexyl unsubstituted or substituted by 1-2 C.sub.1 -C.sub.4 -alkyl groups,

• R'.sub.3 denotes hydrogen or C.sub.1 -C.sub.4 -alkyl and
• R'.sub.4 denotes C.sub.1 -C.sub.4 -alkyl, or
• R'.sub.2, R'.sub.3 and R'.sub.4 together with the nitrogen atom to which they are bonded form imidazole or pyridine which is unsubstituted or substituted by 1 or 2 C.sub.1 -C.sub.4 -alkyl groups, or
• R'.sub.3 and R'.sub.4 together with the nitrogen atom to which they are bonded form piperidine, pyrrolidine, morpholine, piperazine or hexamethyleneimine which is unsubstituted or substituted by 1-4 C.sub.1 -C.sub.4 -alkyl groups,
• R'.sub.5 denotes C.sub.1 -C.sub.4 -alkyl, or phenyl, benzyl or .alpha.- or .beta.-phenylethyl unsubstituted or substituted by 1-2 chlorine, cyano, C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy groups, R.sub.9 denotes hydrogen, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy or chlorine and
• R.sub.10 denotes hydrogen or C.sub.1 -C.sub.4 -alkoxy, or
• R'.sub.5 and R.sub.10 together with the benzene ring and the nitrogen atom to which R'.sub.5 is bonded form an indoline, tetrahydroquinoline or 2,3-dihydro-1,4-benzoxazine radical which is unsubstituted or substituted in the heterocyclic part by 1-4 C.sub.1 -C.sub.4 -alkyl or phenyl, or form a carbazole, phenoxazine or phenthiazine radical which is unsubstituted or substituted by 1-2 C.sub.1 -C.sub.4 -alkyl,
• A' denotes ##STR185## which link via the hetero-atom to the CO group, R.sub.11 denotes hydrogen, C.sub.1 -C.sub.4 -alkyl or phenyl which is unstituted or substituted by 1-2 chlorines or C.sub.1 -C.sub.4 -alkyls,
• D' denotes a direct bond or ##STR186## in which m is 0-4,
• n is 1-4,
• p is 1-4 and
• X.sub.1 is O, S, SO.sub.2, COO, OCO, NR.sub.6 --CO, CO--NR.sub.6, NR.sub.6 --SO.sub.2, SO.sub.2 --NR.sub.6, NCOR.sub.7, NHCONH, OCO--NH, NH--COO, OCO--CH.sub.2 --S, OCO--CH.dbd.CH or OCO--CH.sub.2 O,
• R.sub.6 is H, CH.sub.3, C.sub.2 H.sub.5, allyl or benzyl;
• R.sub.7 is H or CH.sub.3 ;
• and
• An.sup..crclbar. represents an anion,
• and wherein the abovementioned alkyl radicals are unsubstittuted or substituted by 1-2 chlorine, cyano, C.sub.1 -C.sub.4 -alkoxy, phenoxy, naphthoxy, benzyloxy, benzoyloxy, allyloxy, C.sub.1 -C.sub.4 -alkylcarbonyloxy or C.sub.1 -C.sub.4 -alkoxycarbonyl groups, and the phenyl groups, in turn, are unsubstituted or substituted by 1-2 cyano or C.sub.1 -C.sub.4 alkoxy groups.