Abstract: A detonator pellet includes a composite insulating member made of a synthetic resin or a ceramic material, two wires being embedded during manufacture of the member which wires extend in and, respectively, on surfaces of a central part of the insulating member so that the wires, in this way, are supported so well that an ignition bridge can be directly attached to the ends of the wires by soldering, welding or bonding.

Abstract: A molded catalyst has a catalyst material homogeneously distributed in an inorganic molding or a catalytic material anchored on the surface of molding is produced from a flowable molding composition made up of(a) an oxide mixture with contents of amorphous SiO.sub.2 and aluminum oxide and/or(b) electrostatic precipitator ash from high-temperature coal-burning power plants and/or(c) calcined ground bauxite, as a reactive, finely divided component, and an alkali silicate solution as well as optionally finely divided fillers, by casting into a mold or, respectively, by pressing or preferably extrusion and hardening of the molding composition at temperatures of 50.degree.-95.degree. C. Removal of water at 100.degree.-550.degree. C. is possible, as well as baking at temperatures of up to 1,500.degree. C.

Abstract: Disclosed are casting resins made from acrylic acid esters with a high content of finely dispersed fillers. The casting resins contain a polymeric organosilicon compound having functional and nonfunctional groups. As functional groups, the copolymer contains one or more alkoxysilyl groups and one or more (meth)acryloxysilyl groups. The copolymer furthermore contains by copolymerization at least one nonfunctional comonomer having an ethylenically unsaturated grouping as well as an additional comonomer of the group of the vinyl carboxylic acid esters and (meth)acrylic acid esters, if desired. The addition of these polymeric organosilanes to known casting resins brings about a greater lowering of the viscosity of these resins, which are used, for example, for the manufacture of sanitary appliances.

Abstract: A vehicle door having an outer wall and an inner wall spaced therefrom with at least the outer wall and/or the inner wall consisting at least extensively of a synthetic resin. A reinforcing member is completely embedded in the synthetic resin material, with the reinforcing member forming a closed frame corresponding to a contour of the vehicle door. An impact protection strut is provided which extends between at least one of the hinge support and door lock support and transmits forces acting laterally on the vehicle door to the vehicle body.

Abstract: The invention relates to a propellant charge igniter comprising at least two series-connected combustion chambers separated from one another by choke disks, respectively one igniter mixture being housed in these chambers, these igniter mixtures differing from one another with respect to their combustion characteristics and thus exhibiting differing combustion behavior. The combustion chamber volumes are adapted to these igniter mixtures so that the mixture can burn up at the pressure level that is an optimum for the mixtures in each case.

Abstract: A laminate is made of textile sheet structures of synthetic fibers or glass fibers with a covering of polypropylene. The polypropylene is crosslinked by addition of crosslinking agents. The laminate has good electrical insulating properties, perfect solder bath stability, and good mechanical machinability. This laminate is provided, in heated presses, with metal layers or can be provided, in heated presses, with metal layers or can be provided with such metals layers by the application of metallic foils or by electrolytical methods, and serves for the manufacture of printed circuits and ribbon cables. An advantageous production of the textile sheet structures encased with crosslinked polypropylene can be performed on roll stands by thermoplastic encasing and smoothing in a continuous process.

Abstract: A process for the production of multiple-layer moldings from a substrate, member based on polypropylene and an elastomer foam is provided wherein lamination of the foam to the substrate member and shaping of the polypropylene take place in one working step.

Abstract: A seeker head and an associated electronic system are mounted to the front end of a warhead in order to guide the missile to the target and to initiate detonation at the right time. To prevent the seeker head and the electronic system from confusing an impeding the hollow-charge jet produced by the hollow charge, the components arranged in front of the warhead are accelerated away from the warhead by a pyrotechnical charge shortly before hitting the target so that the seeker head and electronic system separate from the warhead and the hollow-charge jet produced by the warhead can thus hit the target without obstacle.

Abstract: The yield of dimethyl terephthalate obtained by the oxidation of a mixture of p-xylene and methyl p-toluate, preferably with air, and esterification of the thus-produced acids is increased by utilizing a mixture of cobalt and manganese compounds as the oxidation catalyst.

Abstract: A nonelectric delay detonator has, in a casing, a secondary charge as well as a delay device. The delay detonator is initiated by an ignition transfer hose extending into the casing. A partition is arranged between a hose end and the delay device. Ignition of the delay device is effected by the hose by impact or heat. An auxiliary charge (e.g. a primer cap) is located on the other side of the partition, this auxiliary charge ignites a delay charge of the delay device. In this way, the delay device burns in a closed system from which gas and pressure cannot escape into the hose. Thereby the scattering width of the delay times of the detonator is reduced.

Abstract: Polyethylene crosslinked by high-energy radiation, preferably electron beams, is an effective material for the manufacture of ammunition elements, preferably cases for cartridges. The case is produced by irradiating a molded case component of polyethylene with high-energy radiation.

Abstract: A nonelectric delay detonator has means for allowing an ignition flame to be transmitted from an ignition transfer hose to a delay device. The delay device causes a secondary charge to detonate after a predetermined delay time. In order to obtain reproducibile delay times of the delay device, a check valve is arranged between one end of the ignition transfer hose and the delay device; this check valve being opened for a short time period due to the excess pressure in the hose and permitting the ignition flame to pass through. During deflagration of the delay device, the check valve is closed again so that the delay device burns within a closed system. In this manner, undefined pressure and gas losses are avoided.

Abstract: In the production of explosive or detonating cords which are covered with plastic, a preliminary cord, which contains the explosive substance, is guided through the opening of an extrusion nozzle and is injection molded with plastic. Measuring sensors in the supply duct for the plastic monitor the temperature and/or the pressure in the supply duct. If permissible limit values are exceeded, a die piece and a spindle sleeve of the arrangement are driven out from a stationary block in opposite directions. The spindle sleeve divided in the lengthwise direction is separated by auxiliary drives from the cord. A plug is withdrawn from the wall of the supply duct by means of a further auxiliary drive in order to relieve pressure stressing. In addition, the preliminary cord is withdrawn from the danger region by reversal arrangment. Furthermore, when the protection arrangment is in the release state an additional cooling takes place.

Abstract: An electrically conductive polyethylene foam which is in the form of a profile, e.g. a sheet, having a closed cell foam structure and exhibiting a surface resistivity of not more than 10.sup.5 ohms/square. The sheet is prepared by a continuous method wherein an extruded, foamable, non-crosslinked preform containing a mixture of polyethylene, ethylene copolymer, chemical blowing agent, crosslinking agent and conductive carbon black is heated to produce the foam.

Abstract: A process for producing fine-grained .beta.-HMX wherein a solution of .beta.-HMX is treated in a .gamma.-lactone in a temperature range of between 5.degree. and 15.degree. C. with toluene, and the desired fine and very pure .beta.-HMX crystals are precipitated. The resultant crystals have grain sizes of down to 5 .mu.m and exhibit an extremely small proportion of other modifications or forms of HMX. An additional aspect of the process resides in providing the very fine .beta.-HMX with a coating of a thermoplastic polymer. In this procedure, the .beta.-HMX particles, after having been separated from toluene, are made into a slurry in water and combined under agitation at temperatures of between 25.degree. and 60.degree. C. with a solution or suspension or emulsion of the thermoplastic polymer. During this step, granules are formed which can be separated after distillation of the solvent.

Abstract: 5-Methyltetrazole can be produced by reacting acetonitrile with an alkali azide or ammonium azide in high purity and a yield of above 98% by using a trialkyl amine as the solvent or suspension agent and by using the associated hydrochloride of the amine as the catalyst.

Abstract: A process for the manufacture of a launching tube with an internal guide surface for effecting controlled spin missiles, such as rockets, wherein the launching tube is provided on the inside with helically extending grooves and/or ridges contacting guide cams or the like of the missiles for guiding therealong; this launching tube is extruded, and sized, from a molding composition containing fiber-reinforced thermoplastic synthetic resin, to have integrally formed, slightly helically extending grooves and/or ridges.

Abstract: Disclosed is a spray concrete which, even at a water-cement ratio of 0.45 to 0.55, is still easy to work, can be sprayed well, and sets and hardens rapidly. It contains, in addition to the conventional additives, additions of naphthalinesulfonicacid-formaldehyde condensation products and highly concentrated alkaline aqueous solutions of potassium aluminate, potassium carbonate and caustic potash. The concrete according to the invention displays an especially rapid solidification when it contains up to 3% by weight alkali silicates or an adequate amount in highly dispersed silicic acid (SiO.sub.2). The additives are incorporated into the concrete preferably directly at the worksite prior to spraying.

Abstract: Disclosed is a method for the preparation of 3-aminoacrylic acid esters by the addition of a beta-hydroxyacrylic acid esters to an aqueous solution of an amine salt.

Abstract: A propellant charge igniter for ammunition including an ignition-conducting housing accommodating an electrical ignition system and an initiating charge therein, the housing being formed of an exothermally burning material.