Abstract: The invention concerns a new method for producing optically active 1-phenylethylamines, wherein (a) racemic 1-phenylethylamines are reacted with (S)-(-)-N-phenylcarbamate lactic acid in the presence of an aliphatic or aromatic hydrocarbon and in the presence of a lower aliphatic alcohol, wherein the reaction components are measured so that for every mole of racemic amine, between 0.25 and 0.5 mole of (S)-(-)-N-phenylcarbamate lactic acid are present, the reaction mixture is then concentrated at a liquid-phase temperature of up to 40.degree. C.

Abstract: The present invention relates to a process for the preparation of 5-substituted 2-chloropyridines of the formula (I) ##STR1## by reaction of acetenamides of the formula (II) ##STR2## with Vilsmeier reagent, which is prepared by reaction of dialkylformamides of the formula (III) ##STR3## with a chlorinating agent, the excess of which is removed from the reaction mixture by distillation or by addition of dialkylformamide after completion of the reaction of the Vilsmeier reagent with the acetenamide of the formula (II), wherein in the formulae (I)-(III):R represents optionally substituted alkyl or aralkyl,R.sup.1 represents C.sub.1 -C.sub.4 -alkyl or aryl-C.sub.1 -C.sub.4 -alkyl,R.sup.2 and R.sup.3 represent straight-chain, branched or cyclic C.sub.4 -C.sub.8 -alkyl.

Abstract: A compound of the formula ##STR1## is useful to treat psychotic disorders in humans, especially schizophrenia, and to prevent exacerbations thereof. The compound can be used as a single therapeutic agent or in combination with neuroleptics such as haloperidol.

Abstract: Dichloropinacolone is produced by introducing into pinacolone twice the molar amount of chlorine, the exothermic reaction mass being cooled initially to maintain the temperature below about 50.degree. C. until about 60 to 80% of the chlorine has been introduced, and then heating the reaction mass to a temperature above 50.degree. C. during introducing of the remainder of the chlorine, thereby to produce dichloropinacolone, and terminating chlorine introduction when the dichloropinacolone content of the reaction mass is at least about 97%. The molten product is added to an aqueous solution of an alkali maintained at a temperature of at least about 50.degree. C., the alkali being present in more than three times the molar amount of the dichloropinacolone. To the resulting solution of a salt of 3,3-dimethyl-2-hydroxy-butyric acid, brought to a pH of about 9 to 12, there is added approximately the stoichiometric amount of potassium permanganate. Solid MnO.sub.

Abstract: The known compound, t-butyl (S)-8-bromo-11,12,13,13a-tetrahydro-9-oxo-9H-imidazo[1,5-a]pyrrolo[2,1-c][ 1,4]benzodiazepine-1-carboxylate of the formula ##STR1## is effective in the prevention or interruption in a human being of panic states, accompanying phobias and the associated social consequences such as anticipatory anxiety and avoidance behavior. In particular, it is effective in the discontinuous, purely attack-based prevention or interruption of panic states.

Abstract: A device for the transportation of flowable material in pulverulent, granular, lump, granulated or pasty form in a feed pipe comprises a coaxial endless feeder screw which is rotatable in the forward or reverse direction and a drive mechanism for driving said screw. The drive mechanism enables one to obtain a feed motion without rotation and a rearward motion with a forced, regular rotation of the endless screw so that the material to be transported remains axially stationary during the rearward motion. Owing to the dense column of material to be transported the bearings may be suppressed; if they are provided, they will have to be arranged outside the conveying stock. The endless screw is designed as a single piece screw and the distance between the screw and the feed pipe is slightly bigger than the average size of the grains or lumps of material to be conveyed. The device is preferably used for the supply of pneumatic or hydraulic conveyors.

Abstract: A conduit for transporting finely-divided or fine-granular, dry bulk materials comprises a material conveyance zone and a zone for introducing the fluidizing medium separated from the first mentioned zone by a material which is permeable to gas and fluids. This conduit comprises at least one each of a closed feeder channel, a closed fluidizing channel and between these a fluidizing base. It runs approximately horizontal. In and/or above the fluidizing base are impeller nozzles with at least one outlet opening for a gaseous or fluid impeller medium. The fluidizing medium is introduced into the feeder channel/feeder channels at a positive pressure of 100-500 mm water column and the impeller medium at a positive pressure of 700-1500 mm water column.

Abstract: A device for loading containers that are open or can be vented, containers for fine particulate materials, said device being part of a pneumatic conveyance system, in particular such a system using dense layer transportation, where the said device comprises essentially a tube-shaped casing, a lifting element, a closing element and a lifting rod which connects the lifting and closing elements and enables the distance between these elements to be varied. The combined weight of the part of the lifting element, that can be moved in the axial direction (A), the closing element and the lifting rod is greater than the elastic force of the lifting element but is smaller than the product of the difference between areas (F.sub.H) and (F.sub.M) and the positive pressure in the supply line acting on the lifting element. The distance (h) of the closing element from the lower edge of the casing is smaller than the stroke of the lifting element.

Abstract: Compressed air is introduced into a feed pipe system for transporting powdery or granular material in order to promote dense flow conditions. Variable or fixed size restrictions with decreasing size of blocking surface in the direction of the material flow equalize the amount of air entering the feed pipe along its entire length. The compressed air is introduced into the feed pipe through porous materials positioned at least in the region of the restrictions.

Abstract: Dichloropinacolone is produced by introducing into pinacolone twice the molar amount of chlorine, the exothermic reaction mass being cooled initially to maintain the temperature below about 50.degree. C. until about 60 to 80% of the chlorine has been introduced, and then heating the reaction mass to a temperature above 50.degree. C. during introducing of the remainder of the chlorine, thereby to produce dichloropinacolone, and terminating chlorine introduction when the dichloropinacolone content of the reaction mass is at least about 97%. The molten product is added to an aqueous solution of an alkali maintained at a temperature of at least about 50.degree. C., the alkali being present in more than three times the molar amount of the dichloropinacolone. To the resulting solution of a salt of 3,3-dimethyl-2-hydroxy-butyric acid, brought to a pH of about 9 to 12, there is added approximately the stoichiometric amount of potassium permanganate. Solid MnO.sub.

Abstract: Device and process for automatic, process-controlled feeding of electrolytic cells for producing aluminum. Besides a low degree of wear on the feed pipes, a fast and accurate feeding of fluxing agents to a particular cell is assured.

Abstract: A power saw, especially power chain saw, in which a sprocket wheel is driven by a motor through the intervention of an intermediate clutch acting as safety clutch, and which comprises a control member for disengaging the intermediate clutch. The control member is by means of an actuating member returnable to its ineffective position. The power saw furthermore comprises a follower member which is movable from an engaged position to a disengaged position and vice versa for respectively connecting and disconnecting the clutch elements of the intermediate clutch. The power saw also includes a clutch with a clutch drum and also has a brake member cooperating with the clutch drum. The brake member is designed as brake band and is looped around the clutch drum.

Abstract: A pneumatic device for unloading cargoes of particulate materials from ships' holds is described in which inside a length of pipe, which sucks the material out of the hold and is principally in the horizontal position, there is at least one fluidizing base which transports the material further and into a silo. The fluidizing or transporting base can be selected to match the requirements for efficient transportation of different kinds of particulate material.

Abstract: Disclosed is a portable motorized chain saw, comprising: a chain sprocket; clutch means positioned between the chain sprocket and the drive shaft of the motor for selectively coupling the chain sprocket with the drive shaft, the clutch means including a drum member; and a brake band positioned in contiguous relationship with the outer circumferential surface of the drum member and including one or more oil stripping openings therein.

Abstract: 6-Tert.-butyl-3-mercapto-4-amino-1,2,4-triazin-(4H)-one is prepared by reacting pinacolone with a sulfur chloride at 0.degree. to 80.degree. C., optionally reacting the mixture with an aqueous amine solution, hydrolyzing the resulting product with an alkali metal hydroxide, heating the resulting mixture from 2 to 10 hours at 80.degree. to 150.degree. C., liberating a 3,3-dimethyl-2-oxo-butyric acid by acidifying with a mineral acid and reacting an aqueous solution of said 3,3-dimethyl-2-oxo-butyric acid with thiocarbohydrazide to yield the desired product.

Abstract: 6-Tert.-butyl-3-mercapto-4-amino-1,2,4-triazin-5(4H)-one is prepared by reacting pinacolone with a sulfur chloride at 0.degree. to 80.degree. C, optionally reacting the mixture with an aqueous amine solution, hydrolyzing the resulting product with an alkali metal hydroxide, heating the resulting mixture from 2 to 10 hours at 80.degree. to 150.degree. C, liberating a 3,3-dimethyl-2-oxo-butyric acid by acidifying with a mineral acid and reacting an aqueous solution of said 3,3-dimethyl-2-oxo-butyric acid with thiocarbohydrazide to yield the desired product.

Abstract: A process for the treatment of waste water obtained in the condensation of thiocarbohydrazide and an aqueous solution of an .alpha.-keto carboxylic acid such as, e.g., 3,3-dimethyl-2-oxo-butyric acid, which comprises mixing said waste water with a water-immiscible ketone, preferably selected from the group consisting of methyl isobutyl ketone, cyclohexanone and pinacolone, said ketone being employed in an amount sufficient to form two phases, separating said two phases, and discharging as waste the aqueous phase. Advantageously the pH of the waste water is no higher than about 6 and its temperature is 20.degree. to 50.degree. C. The organic phase comprises the ketone containing dissolved therein an adduct of the ketone with thiocarbohydrazide and/or similar amino materials originally present in waste water.

Abstract: The invention provides a novel synthesis for pinacolone comprising reacting 2-methyl-but-2-ene and/or 2-methyl-but-1-ene with an aqueous inorganic acid, adding formaldehyde gradually at a temperature between 50.degree. and 200.degree. C at a rate of 0.5 - 1.5 moles of formaldehyde per mole of butene compound, allowing the mixture to react further, and separating the pinacolone by distillation.

Abstract: Dichloropinacolone is produced by introducing into pinacolone twice the molar amount of chlorine, the exothermic reaction mass being cooled initially to maintain the temperature below about 50.degree. C until about 60 to 80% of the chlorine has been introduced, and then heating the reaction mass to a temperature above 50.degree. C during introducing of the remainder of the chlorine, thereby to produce dichloropinacolone, and terminating chlorine introduction when the dichloropinacolone content of the reaction mass is at least about 97%. The molten product is added to an aqueous solution of an alkali maintained at a temperature of at least about 50.degree. C, the alkali being present in more than three times the molar amount of the dichloropinacolone. To the resulting solution of a salt of 3,3-dimethyl-2-hydroxy-butyric acid, brought to a pH of about 9 to 12, there is added approximately the stoichiometric amount of potassium permanganate. Solid MnO.sub.

Abstract: In the methylation of 4-amino-6-t.-butyl-3-mercapto-1,2,4-triazin-5-one to produce 4-amino-6-t.-butyl-3-methylmercapto-1,2,4-triazine-5-one using methyl bromide, the reaction is run in the absence of air whereby product coloration is avoided. Desirably considerable agitation is employed along with recycle and especially with an emulsifying agent which markedly speeds up the reaction. Measures such as operating under a slight vacuum and recycle of unused methyl bromide and mother liquor are employed to improve the yield and to avoid the problems of discharging the bromides to the environment.