Abstract: A mixing head for two or more reactive components especially anionically polymerizing caprolactam comprises a piston formed with recess means which, at the end turn toward the outlet of the mixing chamber, intercept respective streams of the components which are normally trained upon one another and thus prevent mixing just before the piston blocks the ports through which these streams are directed into the mixing chamber.

Abstract: Method for producing 4-hydroxyphenylacetic acid where(a) o-chlorophenol is reacted with glyoxylic acid to form 3-chloro-4-hydroxymandelic acid,(b) the 3-chloro-4-hydroxymandelic acid is reduced to 3-chloro-4-hydroxyphenylacetic acid, and(c) the chloro group is cleaved from the 3-chloro-4-hydroxyphenylacetic acid.

Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is chlorine, bromine, cyclopropyl or cyclohexyl and non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as their salts are useful as tranquilizers, muscle-relaxants and anticonvulsants.

Abstract: A mixing head for mixtures of reactive components, e.g. two-component synthetic-resin systems to be discharged into a mold, in which the orifices for the two components open into a mixing chamber and can be selectively blocked or unblocked by a plunger or piston which serves to drive the mixture out of the chamber. According to the invention a blocking body (baffle barrier) is provided on a connecting rod which extends through the plunger and, in a retracted position of the latter, is located in the path of the jets of the reactive components emanating from the orifices.

Abstract: A multiple-step process for the preparation of 6-aryl-4H-s-triazolo-[3,4-c]-thieno-[2,3-e]-1,4-diazepines of the formula ##STR1## wherein R.sub.1 is hydrogen, halogen or lower alkyl of 1 to 2 carbon atoms;R.sub.2 is hydrogen, chlorine, bromine, straight or branched alkyl of 1 to 3 carbon atoms, .omega.-hydroxyalkyl of 1 to 3 carbon atoms, cycloalkyl of 3 to 6 carbon atoms or a 5- or 6-membered heterocycle comprising an oxygen sulfur or nitrogen atom, where the nitrogen atom may optionally be substituted by lower alkyl; andR.sub.3 is hydrogen, fluorine, chlorine, or bromine;and optionally acid addition salts thereof, starting from compounds of the formula ##STR2## wherein R.sub.1 and R.sub.3 have the meanings defined above, andX is halogen, amino or acyloxy.

Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, chlorine, bromine or alkyl of 1 to 4 carbon atoms;R.sub.2 is hydrogen, fluorine, chlorine, bromine, nitro or trifluoromethyl; andR.sub.3 is chlorine, bromine, alkoxy of 1 to 3 carbon atoms, alkylmercapto of 1 to 3 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, cycloalkenyl of 3 to 6 carbon atoms, or a saturated or unsaturated 5- to 6-membered heterocycle comprising an oxygen, sulfur or nitrogen heteroatom, where a substitutable nitrogen heteroatom may optionally have a lower akyl substituent attached thereto;and non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as their salts are useful as tranquilizers, muscle-relaxants and anticonvulsants.

Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, fluorine, chlorine, bromine, nitro or trifluoromethyl; andR.sub.2 is hydrogen, alkyl of 1 to 4 carbon atoms or hydroxyalkyl of 1 to 4 carbon atoms; and non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as their salts are useful as tranquilizers, muscle-relaxants and anticonvulsants.

Abstract: Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, halogen or methyl, andR.sub.2 is hydrogen, halogen, methyl or methoxy, and non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as their salts are useful as neuroleptics.

Abstract: Compounds of the formula ##SPC1##WhereinR.sub.1 and R.sub.2 are each hydrogen or methyl, andR.sub.3 is chlorine, bromine or nitro, and non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as their salts are useful as tranquilizers.