Benzimidazolylcarbamic acid esters substituted on the benzenoid nucleus by an oxy or thio substituent

A 2-benzimidazolylcarbamic ester of the formula ##STR108## or a salt thereof in which X denotes a sulphur atom, an oxygen atom, an SO group or an SO.sub.2 group,

• Z denotes an alkylene group with 1 to 6 carbon atoms in the main chain, which is unsubstituted or C.sub.1 -C.sub.4 -alkyl substituted,
• R denotes an NH.sub.2, NHR.sup.1 or NR.sup.1 R.sup.2 group, in which
• the substituents R.sup.1 and R.sup.2 are identical or different and denote a C.sub.1 -C.sub.6 -alkyl group which is unsubstituted or substituted by halogen, cyano, C.sub.1 -C.sub.4 -alkoxy or nitro, a phenyl group which is unsubstituted or substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen, trifluoromethyl, nitro or cyano or a phenylalkyl group which is unsubstituted or substituted by C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, halogen, trifluoromethyl, nitro or cyano in the aryl portion and which is C.sub.1 -C.sub.4 -alkyl in the alkyl portion,
• or in which
• R denotes a cycloalkyleneimino, cycloalkenylamino or cycloalkadienyleneimino group which has a total of 4 to 7 ring members and is unsubstituted or substituted by one or two C.sub.1 -C.sub.4 -alkyl groups, and
• R.sup.3 denotes a C.sub.1 to C.sub.4 alkyl group which is unsubstituted or substituted by C.sub.1 -C.sub.4 -alkoxy, halogen, trifluoromethyl, cyano or nitro or a C.sub.2 to C.sub.6 alkenyl group.