Abstract: A locking unit with a hydraulically actuable piston, an electromagnet with a coil and an armature, at least one latching element, a coupling rod, and a magnetic element. The coupling rod connects the magnetic element to the armature or an armature rod which is attached thereto, and a prestressing element fixes the magnetic element in a guide tube radially. As a result, an advantageous position determination is made possible by way of sensing of a magnetic field which is generated by the magnetic element.

Abstract: Substituted benzylimidazolium salts of the formula ##STR1## where R.sup.1, R.sup.2 and R.sup.3 are identical or different and are each hydrogen, C.sub.1 -C.sub.4 -alkyl or halogen, R.sup.4 is alkyl of 8 to 14 carbon atoms or benzyl which is unsubstituted or substituted by halogen or alkyl, R.sup.5 is hydrogen, alkyl of 1 to 8 carbon atoms, phenyl or benzyl, R.sup.6 is alkyl of 1 to 4 carbon atoms or halogen, R.sup.7 is alkyl of 1 to 4 carbon atoms or halogen and X is an anion of an acid, in particular of a hydrohalic acid, and microbicides containing these compounds.

Abstract: 1-Hydroxymethylimidazoles which are unsubstituted or alkyl-substituted in the 2-position, their manufacture and their use as chemical intermediates, e.g. for other imidazole derivatives or for the drug cimetidine.

Abstract: 1-Hydroxymethylimidazoles which are unsubstituted or alkyl-substituted in the 2-position, their manufacture and their use as chemical intermediates, e.g. for other imidazole derivatives or for the drug cimetidine.

Abstract: Manufacture of 4-nitroimidazoles by nitrating imidazoles with nitric acid in the presence of urea while at the same time removing water from the mixture by distillation.The compounds which can be manufactured by the process of the invention are catalysts for polymerization reactions and condensation reactions, especially for reactions with epoxides, the aldol condensation, the manufacture of polyurethanes, condensation reactions with malonic esters or acetoacetic esters and intermediates for the manufacture of dyes, textile auxiliaries and insecticides.