Abstract: Dry liquids having a particle size distribution (cumulative undersize) D10% ?80 to 140 ?m D50% 140 to 200 ?m D90% 190 to 340 ?m are prepared by passing the liquids and a hydrophobic, pyrogenically prepared silica through a clearly defined, spatially limited shear zone in which the liquids are broken up into small droplets and are surrounded by the hydrophobic, pyrogenically prepared silica.

Abstract: The process for producing granular sodium percarbonate by fluidized bed buildup granulation comprises the spraying of an aqueous solution of hydrogen peroxide and of an aqueous solution of sodium carbonate with at least one multisubstance nozzle with external mixing into a fluidized bed comprising sodium percarbonate particles and simultaneously evaporating water, and is characterized in that the solution of sodium carbonate additionally comprises sodium carbonate and/or sodium percarbonate in suspended form and is passed through a dispersing apparatus for dispersion of solids before being fed to the multisubstance nozzle. The process allows the blockage of the multisubstance nozzle to be avoided and sodium percarbonate dust to be recycled from the offgas stream of the fluidized bed into the granulation.

Abstract: Dry liquids having a particle size distribution (cumulative undersize) D10% ?80 to 140 ?m D50% 140 to 200 ?m D90% 190 to 340 ?m are prepared by passing the liquids and a hydrophobic, pyrogenically prepared silica through a clearly defined, spatially limited shear zone in which the liquids are broken up into small droplets and are surrounded by the hydrophobic, pyrogenically prepared silica.

Abstract: An organosilane preparation, comprising a mixture of one or more organosilanes and one or more fillers, has a fines content of less than 2%.

Abstract: A fuel injection pump for internal combustion engines which has a moving part supported in a housing bore and on its jacket face on one side, has an exit opening that is under high pressure, and whose bearing is improved by virtue of the fact that on the jacket face of the part or in the wall of the housing bore, at least one pressure compensation is provided. The compensation face is connected to a high pressure source, is disposed on a side of the jacket face of the part which side is remote from the exit opening, and is continuously covered by the wall of the housing bore. As a result, a compensation of the pressure action by means of the pressure field prevailing in the region of the exit opening occurs so that an improved, less damage-prone bearing is produced with a greater high pressure tightness of the moving part.

Abstract: In a process and an apparatus for determining the coercive field strength and the maximum pitch of the hysteresis cure in set-up techniques a test body is magnetized in a magnetic field of an exciter coil fed with an alternating current, as the hysteresis curve of the test body is traversed a number of times with the frequency of the alternating current and the tangential field strength on the test body surface generated by the exciter coil is detected continuously with the aid of a magnetic field strength sensor during the traversing of the hysteresis curve. From a harmonic analysis of the time course of the tangential field strength within one period there is calculated a distortion factor for the determination of the maximum pitch of the hysteresis curve.