. . "C.sub.3 - carboxyalkyl or C.sub.1 - or C.sub.2 -halogenoalkyl having 1 to 5 halogen atoms, in particular fluorine atoms, C.sub.1 - to C.sub.4 -alkylamino, C.sub.2 - to C.sub.8 -dialkylamino, C.sub.7 - to C.sub.10 -arylamino, C.sub.12 - to C.sub.16" . . .