Quaternised benzofuranyl-benzimidazoles

A benzofurane of the formula ##SPC28##

• wherein
• R.sub.1 denotes hydrogen or a lower alkyl group or together with R.sub.2 denotes a fused benzene radical,
• R.sub.2 denotes hydrogen, a lower alkyl or alkoxy group, chlorine, bromine, carboxyl, aminocarbonyl, sulphonic acid, aminosulphonyl, or together with R.sub.3 denotes a fused benzene radical,
• R.sub.3 denotes hydrogen, lower alkyl, alkoxy or together with R.sub.4 denotes a fused benzene radical,
• R.sub.4 denotes hydrogen, a lower alkyl group, chlorine or bromine,
• R.sub.5 denotes hydrogen, a lower alkyl group or phenyl,
• R.sub.6 denotes hydrogen, lower alkyl, lower alkoxy, chlorine, bromine, or phenyl,
• R.sub.7 is hydrogen,
• R.sub.8 denotes a lower alkyl group, a hydroxy-lower-alkyl group, cyanoethyl, phenyl which is unsubstituted or substituted by a chlorine, bromine, a lower alkyl or lower alkoxy group, or phenyl loweralkyl,
• R.sub.9 denotes a lower alkyl group, a hydroxy-lower-alkyl group, phenyl lower-alkyl which is unsubstituted or substituted by chlorine or lower alkoxy, or the --CH.sub.2 CN, -- CH.sub.2 CONH.sub.2 or --CH.sub.2 -COOR radical, wherein R represents alkyl with one to four carbon atoms, and
• X denotes halogen, lower alkylsulphonic acid or phenylsulphonic acid which is unsubstituted or substituted by lower alkyl.