Abstract: The present invention relates to UV-protected, multilayer polycarbonate sheets containing a base sheet, at least one outer layer and optionally at least one additional protective layer, and to the production of the polycarbonate sheets according to the invention by coextrusion.

Abstract: A gas generating mixture comprises a high nitrogen and low carbon fuel from he group nitroguanidine (NIGU), tiraminoguanidine nitrate (TAGN), diguanidinium-5,5'-azotetrazolate (GZT) or 3-nitro-l,2,3-triazol-5-one (NTO), as well as copper diammine dinitrate Cu(NH.sub.3).sub.2 (NO.sub.3).sub.2 as the oxidizer and a pyrophoric metal or such a metal alloy on a carrier catalyst.

Abstract: A gas generating mixture comprises a high nitrogen and low carbon fuel from he group nitroguanidine (NIGU), triaminoguanidine nitrate (TAGN), diguanidinium-5,5'-azotetrazolate (GZT) and 3-nitro-1,2-3-triazol-5-one (NTO), as well as copper diammine dinitrate Cu(NH.sub.3).sub.2 (NO.sub.3).sub.2 as the oxidizer and V.sub.2 O.sub.5 /MoO.sub.3 mixed oxides and/or oxide mixtures as the catalyst.

Abstract: A solid propellant for rocket propulsion systems or gas generators compri 35 to 80 wt. % ammonium nitrate (AN) in pure or nickel oxide, potassium or cesium nitrate phase-stabilized form (PSAN) with an average particle size of 5 to 200 .mu.m, 15 to 50 wt. % of a binder system of a binder polymer and an energy-rich plasticizer, as well as 0.2 to 5 wt. % of a burning moderator of vanadium/molybdenum oxide in the form of an oxide mixture or mixed oxide.

Abstract: A solid propellant for rocket propulsion systems or gas generators compri 35 to 80 wt. % ammonium nitrate (AN) with an average particle size of 5 to 200 .mu.m, which is phase-stabilized (PSAN) by chemical reaction with Cu0 or Zn0, 15 to 50 wt. % of a binder system of a binder polymer and an energy-rich plasticizer, as well as 0.2 to 5.0 wt. % of a burning moderator of vanadium/molybdenum oxide as an oxide mixture or mixed oxide.

Abstract: A gas-generating mixture for rescue and air bag systems, as well as for ret and tubular weapon drive systems comprises high nitrogen, low carbon fuels GZT, TAGN, NG or NTO, the cold and fast burning oxidizer Cu(NO.sub.3).sub.2 *3Cu(OH).sub.2 and a catalyst for reducing pollutant gases, accelerating the reaction and cooling formed by a pyrophoric metal or a pyrophoric alloy on a carrier.

Abstract: Gas-generating mixtures for rescue and air bag systems, as well as rocket d tubular weapon drive systems comprise high nitrogen and low carbon fuels GZT, TAGN, NG or NTO catalysts for pollutant gas reduction/reaction acceleration of V.sub.2 O.sub.5 /McO.sub.3 mixed oxides and/or oxide mixtures, the oxidizer Cu(NO.sub.3).sub.2 *3Cu(OH).sub.2, which permits a cold, rapid combustion and optionally the additional coolant Fe.sub.2 O.sub.3, which has further oxidizer characteristics.

Abstract: In a circuit arrangement for the operation of a light source for the optical scanning of recording media, in particular so-called compact discs, from an information signal obtained by the scanning a signal (quality signal) is derived which describes the quality of the information signal. The power of the light source is controlled in dependence on the quality signal with the aim of maximising quality.

Abstract: A chaise longue for therapeutic treatment of a patient consists of three support sections hinged together so as to be pivotable relative to one another for comfortably supporting a patient which support sections have openings formed therein spaced along the longitudinal centerline of the chaise longue and electroacoustic transducers movably disposed below the openings and adapted to radiate upwardly through the openings at the lower back, the chest and the head/neck areas of a patient resting on the chaise longue with an enhanced signal of a frequency corresponding to the rhythm frequency of certain music to which the patient's body is exposed which rhythm frequency is in the non-audible range and adapted to achieve total relaxation of the patient.

Abstract: Reaction compositions of selected make-up result after curing in non-meltable polymers of high mechanical stability and low water uptake. Owing to the low birefringence of the cured products, these compositions are highly suitable for preparing carrier materials for optically and magnetically readable and/or writable data carriers.

Abstract: A pacified mass is hardened under controlled conditions to produce low tension moulded parts (4) of duroplasts, the shringkage being compensated for by the movement of a lower mould part (2) and/or an upper mould part (3) to follow the mass.

Abstract: A stoneworking or cutting device for texturing the surface of stones, in particular, concrete slabs, has a tool holder in a swing frame with a number of stoneworking or cutting tools, whereby each tool is activated individually. To produce the striking force, a number of flyweights are mounted on the swing frame so that they can rotate, whereby the swing frame itself is mounted so that its height can be adjusted in a horizontally movable base carriage. Striking pins corresponding to the individual tools in the tool holder are made to oscillate by the flyweights to activate the tools which work the stone.

Abstract: A mass is cooled systematically under the influence of an electrical or mechanical alternating field to obtain a quasi dielectric isotropic structure of a synthetic resin part.

Abstract: The present invention relates to thermoplastic mixtures of 90 to 20% by weight of an aromatic polycarbonate with an Mw of 15,000 to 25,000 and p-(iso-C.sub.8 -C.sub.9 -alkyl)-phenyl end groups and 10 to 80% by weight of a polystyrene with an Mw of 80,000 to 400,000, and to their use as substrates for optical data memories.

Abstract: In a cutting table for sheet metal and the like, the portion of the work that overhangs the table where it is cut is supported on a traveling adjustable support (9) having rollers on its upper surface. As the upper blade is brought down to cut the work progressively from the side near the pivot of the blade to the opposite side, a traveling carriage on which the traveling support is mounted is caused to move along the length of the cut so that it provides support to the work at the location where the blade is doing the cutting. The support is pivoted on an axis perpendicular to the cut so that it can adjust itself to the inclination of the upper cutting blade, the pivot being fixed on a vertically slidable member guided in the carriage. Hydraulically driven pistons enable the support to be raised or lowered with respect to the carriage. Wide cuts can thus be made without the strip that is cut off being twisted, coiled up, or otherwise deformed.

Abstract: The invention relates to plastics mouldings, more particularly transparent plastics mouldings, which are finished with a coating of three successively stoved, chemically different layers, and to a process for producing the finish. The special finish considerably improves the scratch resistance, abrasion resistance, weathering resistance and yellowing resistance of the plastics surfaces without affecting the transparency of the plastics moulding. The first layer (primer layer) is produced from a hardenable acrylic resin and an aminoplast resin, the second layer from a thermoplastic acrylic resin, a plasticizer and a masked polyisocyanate and the third layer (cover layer) from at least one partially hydrolyzed organosilane, an .alpha.,.omega.-dihydroxy polydimethyl siloxane, a silica sol and at least one masked polyisocyanate as binder in the presence of a water-soluble organic or inorganic acid. The three-layer coating contains UV-absorbers, light stabilizers and, optionally, standard auxiliaries.

Abstract: To provide for more reliable determination of resistance of sample surfaces to light and weather influences, test apparatus is equipped with a radiation-measuring device. A portion of radiation used for testing is guided to the measuring device, by quartz guides, spectrally dispersed, and measured as to intensity and/or dosage in one or several pre-selected spectral regions. Tests may use natural or artificial radiation, and a measuring device may be stationary or movable relative to a radiation source.

Abstract: Phosphites of the general formula: ##STR1## in which n.sub.1 is an integer;n.sub.2 is 0 or an integer;n.sub.3 is an integer;at least one of the groups R is an oxetane group as hereinafter defined or a hydrocarbon radical being substituted at least by one oxetane group as hereinafter defined;the remaining groups R are selected from alkyl, aralkyl, cycloalkyl, aryl and hetaryl groups; andthe group or groups Ar are the same or different at-least-divalent aromatic groups the free valencies of which are directly linked to the aromatic nuclei; anda process for their preparation.

Abstract: Phosphites of the general formula: ##STR1## in which N.sub.1 IS AN INTEGER;n.sub.2 is 0 or an integer;n.sub.3 is an integer;At least one of the groups R is an oxetane group as hereinafter defined or a hydrocarbon radical being substituted at least by one oxetane group as hereinafter defined;The remaining groups R are selected from alkyl, aralkyl, cycloalkyl, aryl and hetaryl groups; andThe group or groups Ar are the same or different at-least-divalent aromatic groups the free valencies of which are directly linked to the aromatic nuclei;And a process for their preparation.