Abstract: The invention relates to a compound of the general formula (I) N3O2S—Ar-L-Ar?—SO2N3, wherein: —Ar and Ar? are aromatic building blocks; and —L is a linking group comprising at least one heteroatom as well as an organic chain denoted as Sp? and having at least two carbon atoms. The invention also relates to a compound of the general formula (II) wherein: —Ar and Ar? are aromatic building blocks; —L is a covalent bond or a linking group; —m and n are both 0 or 1, at least one of m and n being 1; —Sp and Sp? are organic chains having at least two carbon atoms. The invention also relates to the use of these compounds as cross linking agents in the manufacture of polymers.

Abstract: The invention relates to a compound of the general formula (I) N3O2S—Ar-L-Ar?—SO2N3, wherein: —Ar and Ar? are aromatic building blocks; and —L is a linking group comprising at least one heteroatom as well as an organic chain denoted as Sp? and having at least two carbon atoms. The invention also relates to a compound of the general formula (II) wherein: —Ar and Ar? are aromatic building blocks; —L is a covalent bond or a linking group; —m and n are both 0 or 1, at least one of m and n being 1; —Sp and Sp? are organic chains having at least two carbon atoms.

Abstract: The invention relates to a method for determination of the muzzle velocity of a projectile (2) when it emerges from the firing barrel (1) of a shoulder-held weapon. In order not to weaken the firing barrel, it is proposed that a transmitter (3) for transmission of signals be arranged on the end face of the firing barrel (1) and that two sensors (9, 10), which are arranged at a distance d from one another, be arranged in or on the projectile (2) in order to detect the signals transmitted by the transmitter (3) and that these sensors (9, 10) detect a pulse on flying past the transmitter (3), and that the muzzle velocity for the projectile (2) be determined from the time difference between the pulses detected by the two sensors (9, 10).

Abstract: The invention relates to a method for thermally initiated triggering of an aerosol fire extinguisher having a strike pin (6) acted upon by an inner spring (7) and locked in the stand-by state, and after thermal initiation, the lock is removed and the strike pin (6), driven by the force of the inner spring (7), strikes against a mechanical firing cap (1), whereby an initial firing material is released in the firing cap (1), igniting a booster charge (2), the hot conversion gas thereof igniting a pyrotechnic extinguisher charge in the aerosol fire extinguisher. In order that an absolutely reliable initiation takes place under the same conditions throughout the entire service life of the aerosol fire extinguisher, it is proposed that only immediately after the thermal initiation, when the firing pin (6) is still locked, the inner spring (7) is brought to the necessary tension for triggering the firing cap (1), and only after reaching said tension is the lock of the firing pin (6) automatically released.

Abstract: The present invention relates to a method for the production of 2-halo-4-nitroimidazole and intermediates thereof. Further, the present invention relates to a production process of 1,4-dinitroimidazole comprising subjecting 4-nitroimidazole to nitration reaction. Furthermore, the present invention relates to a production process of 4-nitroimidazole comprising subjecting imidazole to nitration reaction.

Abstract: The object of the present invention is the use of phosphonium salts in coupling reactions, and a method for their preparation.

Abstract: The invention relates to a method for producing diazoalkanes, which is characterized by dissolving a diazoalkane precursor in a first solvent, dissolving a base in a second solvent, allowing the substances to react in a reactor while forming the diazoalkane and removing the diazoxaline under reduced pressure. The inventive method is especially suitable for producing diazomethane.

Abstract: The object of the present invention is the use of phosphonium salts in coupling reactions, and a method for their preparation.

Abstract: The invention discussed above provides a reinforcing element for a lower impact region of a front bumper of a motor vehicle for the protection of pedestrians during the impact of a lower leg section against the lower impact region of the front bumper. The reinforcing element is thus connected behind, in direction of travel, the lower front bumper region to the latter. The reinforcing element has a base plate with reinforcing ribs attached thereto. It extends essentially in horizontal direction, approximately over the width of the front bumper. It is thus proposed for the first time that the reinforcing element is designed as a separate plate which can be integrated in the lower bumper region. The above invention also discusses a front bumper equipped therewith for a motor vehicle.

Abstract: When an ignition system is installed, the spatial position of an ignition device (5a to 5g) in relation to the surrounding, its geographical position, is as yet not determined. The user is required to exercise extreme caution in order to ensure that the ignition devices (5a to 5g) connect to the ignition system (1) in accordance with a predetermined blasting plan. A specially trained person must therefore systematically carry out the sequential connection (compulsory sequence) of each ignition device (5a to 5g) to the bus line (3) of the ignition system. i.e. logging. The person connecting the ignition devices must execute the ignition of device programming operation in all kinds of conditions, in open country, with utmost caution. This represents a considerable time delay for a blast. If one ignition device is overlooked during logging, the already entered data have to be reprogrammed, which costs time.

Abstract: The subject of the present invention is lead- and barium-free propellant charges with primary explosives mixed with oxygen-supplying substances, characterized in that the primary explosives are selected from alkali metal and/or alkaline earth metal salts of dinitrobenzofuroxanes and the oxygen-supplying substances are chosen from metal peroxides, nitrates of ammonium, guanidine, aminoguanidine, triaminoguanidine, dicyanodiamidine, and the elements sodium, potassium, magnesium, calcium, cerium, and/or multivalent metal oxides. The propellant charges according to the invention exhibit increased stability with respect to known propellant charges that are free of harmful substances.

Abstract: Errors may occur in a detonating system that consists of several detonating circuits when the connection—the logging-on—of detonators is effected to the buses of a logger which in turn is connected to a blaster. Connecting is effected, particularly in opencast-mining operations, under conditions that may lead to damage, not visible at first, in particular to the insulation of the detonators and also of the detonating lines. Errors may occur in the transmission of data, for example as a result of loss or falsification of the signals to be transmitted or as a result of intrusion of signals from an extraneous detonator. In accordance with the invention it is therefore proposed that a log-on manager is installed which is in bidirectional contact with the loggers, with the blaster and with the log-data communicators of the loggers which signal the data pertaining to the detonators to the logger.

Abstract: A plastic fender has an upper first edge area and a second edge area extending at an approximately 90° angle thereto. The fender is fixed to the vehicle body in the second edge area by a screw. Furthermore, along the first and second edge areas, a plurality of spaced-apart elongated holes is provided, which admit a mounting section of a guide element which in turn is mounted to the vehicle body with a mounting screw. On the mounting sections of the guide elements, a guide edge covering, respectively, the opposite longitudinal edges of an elongated hole is provided such that, during thermal expansion, the fender can elongate unhindered. For this purpose, the longitudinal extent of the mounting section of the guide elements is shorter than the corresponding longitudinal extent of the elongated hole.

Abstract: A plastic fender has an upper first edge area and a second edge area extending at an approximately 90° angle thereto. The fender is fixed to the vehicle body in the second edge area by a screw. Furthermore, along the first and second edge areas, a plurality of spaced-apart elongated holes is provided, which admit a mounting section of a guide element which in turn is mounted to the vehicle body with a mounting screw. On the mounting sections of the guide elements, a guide edge covering, respectively, the opposite longitudinal edges of an elongated hole is provided such that, during thermal expansion, the fender can elongate unhindered. For this purpose, the longitudinal extent of the mounting section of the guide elements is shorter than the corresponding longitudinal extent of the elongated hole.

Abstract: The invention relates to a method for evaluating electronic impacts or shots of fired shots in a shooting range for sportsmen and for hunter training. The target to be shot at is provided as a light spot and is projected onto a target wall (1) via a light source in such a way that said target can move in all directions. An infrared camera (7) records the shooting image on the target wall (1) for evaluating the impact. The aim of the invention is to increase accuracy and reduce the evaluation time. Target co-ordinates arm detected while the target is being provided. Said target coordinates arm compared to the impact co-ordinates obtained by means of the impact evaluation. An impact is signalled when an impact falls short of a given divergence.

Abstract: A fastening device on a plastic attachment for a motor vehicle, especially on a bumper, with a receptacle formed in one piece on the attachment for a part to be fastened to the attachment by means of snap fastening, which, like the receptacle, has no resiliently deformable snap fastening element, and a plug-in element having resiliently deformable snap fastening elements for position-setting snap fastening on the one hand to the part to be fastened and on the other hand to the socket on the attachment, is to be made susceptible of rational and simple manufacture. For this purpose such a fastening device provides for the engagement of at least one of the snap fastening means of the plug-in element, the receiver of the attachment has substantially oppositely lying arms of limited circumference with at least one opening each with respect to the direction of insertion of the plug-in element for the achievement of the position-fixing snap fastening in question.

Abstract: The present invention relates to a cover for closing an opening which is formed in a wall, especially in a trim part of a motor vehicle. The wall has on its inside in the area of the opening a supporting shape for the cover which makes it possible to turn the cover inserted in the opening between a closed position, wherein the cover closes the opening, and a tilted position around a tilt axis in which the cover is tilted from its closed position and is removable from the opening at the outside of the wall and/or insertable into the opening. On the cover a first ramp is formed which, when the cover is turned from its tilted position to the closed position, cooperates with a wall-mounted first guide such that the cover when in the closed position assumes a predetermined relative position.

Abstract: The invention relates to a motor vehicle bumper with an inside bumper unit which can be fastened to a vehicle body and a bumper outside unit which is fastened section-wise to the bumper inside part. According to the invention the inside bumper unit supports the outside bumper unit solely in the area of its sill portion which is to be arranged under a vehicle trunk lid. Use for lightweight bumpers for motor vehicles.

Abstract: A sonotrode for an ultrasonic welding device has an ultrasound generator that supplies high-frequency electrical energy to a converter that converts this energy into mechanical vibrations and conveys the latter, optionally via a booster, to a sonotrode (2). The sonotrode (2) is formed with a contact surface (3). In order to avoid troublesome sink marks, pegs (1) are arranged on the contact surface (3).

Abstract: A separable, form-fitting joint (5) is proposed in which one plastic component is designed as a base component (6) and another component, a cover (7), is designed as a component to be mounted on the base component (6), and the cover (7) is equipped, as viewed from the mounting direction (10), with opposing pocket-shaped receptacles (13, 14, 20, 21) which are formed on cover (7) by tongues (16, 17, 22, 23) on the cover (7) and which accommodate the insertion of flange-shaped edge sections (9, 12) of the base component (6).