Abstract: The invention relates to a circuit arrangement for producing an alternating voltage or an alternating current from a unipolar direct current source having an inverter relating to a neutral conductor. The direct current source is connected to an inverter which converts the unipolar voltage of the direct current source into a bipolar intermediate circuit voltage that is stored in a buffer circuit (C1, C2) which is connected to the inverter. The inverter comprises a clocked switch (So) and an energy converting unit which is configured as a dual coil (DR1,DR2) having two windings (W1,W2) which are closely coupled to each other.

Abstract: The present invention relates to polyamide moulding compounds which have very low distortion with good mechanical properties. This is achieved by a combination of transparent polyamide with fibrous reinforcing materials and also particulate fillers. The moulding compounds according to the invention are used for the production of any moulded articles, semi-finished products or finished products.

Abstract: The invention provides a filter module comprising an outer casing provided at each end with a respective support plate for supporting at least one filter element for obtaining a filtrate that is recovered via an outlet passage provided in the vicinity of each support plate. According to the invention, each support plate is extended at right angles by an assembly skirt for assembling to the casing.

Abstract: The invention relates to a process for dehydrogenation of a hydrocarbon feedstock in the presence of a catalyst that comprises a noble metal M that is selected from the group that consists of platinum, palladium, rhodium, and iridium, at least one promoter X1 that is selected from the group that consists of tin, germanium, and lead, and optionally a promoter X2 that is selected from the group that consists of gallium, indium and thallium, an alkaline or alkaline-earth compound and a porous substrate, in which the atomic ratio X1/M and optionally X2/M is between 0.3 and 8, the Hir/M ratio that is measured by hydrogen adsorption is greater than 0.40, and the bimetallicity index BMI that is measured by hydrogen/oxygen titration is greater than 108.

Abstract: A process for the production of C3-C6 light olefins from ethanol is described, and said process comprises at least the passage of a feedstock that contains ethanol into at least one reaction unit that is provided with at least one catalyst that comes in the form of spherical balls with a diameter of between 1 and 3 mm, each of said spherical balls comprising at least one zeolite and at least one alumina-based substrate and having a pore distribution such that the macropore volume that is measured by mercury porosimetry is between 0.10 and 0.20 ml/g and the mesopore volume that is measured by mercury porosimetry is between 0.25 and 0.35 ml/g.

Abstract: Process for separating at least one type of catalyst or adsorbent particles having similar colors characterized in that such particles undergo an oxidative heating treatment for generating particle of different colors, and then particles are separated using a color sorting process for separating at least one type of particles.

Abstract: The invention relates to highly acetalized, coarse-grained polyvinyl acetals with a degree of acetalization of >80 mol % and an average grain size of ?100 ?m obtainable by acetalization of partially or fully hydrolyzed polyvinyl esters with a degree of hydrolysis of ?70 mol % with acetaldehyde, characterized by the fact that the acetalization is started at a temperature T1 of 0° C.?T1?+20° C. and is then continued at a temperature T2 of >+40° C., wherein the temperature T2 is held for a time period of 0.05 to 4 hours and the acetalization is performed in a closed reactor.

Abstract: Novel compounds of the formula I in which R1, R2, R3 and Het are as defined herein, which are inhibitors of tyrosine kinases and/or Raf kinases and can be employed for the treatment of tumors, for neuroprotection and for protection of the stress proteins of the skin.

Abstract: The present invention relates to benzo[f]chromene and pyrano[3,2-f]-chromene derivatives of the formula I in which L1, L2, R1, R2, A1, A2, Z1, Z2, m and n are as defined in claim 1, to the preparation thereof, to the use thereof as components in liquid-crystalline media, and to electro-optical display elements which contain the liquid-crystalline media according to the invention.

Abstract: The present invention relates to a liquid-crystal (LC) display of the PS (polymer stabilized) or PSA (polymer sustained alignment) type, and to polymerisable compounds and LC media for use in PS (polymer stabilized) and PSA displays.

Abstract: The invention relates to 2,5-selenophene derivatives and 2,5-tellurophene derivatives, inter alia for use as components in liquid-crystal mixtures, and to liquid-crystal mixtures which comprise the compounds, and to liquid-crystal displays based on these mixtures. The invention furthermore relates to processes for the preparation of the compounds and to Se/Te-containing intermediates.

Abstract: A seat track mechanism for a vehicle, includes a lower rail mounted to a vehicle floor; an upper rail supported by the lower rail and slidable relative to the lower rail; and spherical rotators held between the lower and upper rails, the spherical rotators rolling via a sliding movement of the upper rail. One of the upper rail and the lower rail includes at least one horizontal flat portion parallel to a widthwise direction of the seat track mechanism and parallel to a direction of the sliding movement of the upper rail, and the other of the upper rail and the lower rail includes at least one rotator supporting recess having a circularly arcuate shape in cross section which is uniform in a lengthwise direction of the seat track mechanism, the spherical rotators being held between the rotator supporting recess and the horizontal flat portion.

Abstract: The present invention relates to the use of liquid-crystal displays (LCDs), and to processes for the recycling thereof. The processes according to the invention are characterised in that the LCDs are employed at least partly as replacement for other raw materials. In general, the LCDs are thermally treated here at a temperature in the range from 900 to 1700° C.

Abstract: The invention relates to a multilayer structure in which the inner layer is in contact with petrol or diesel fuel and comprising, in succession from the outside inwards: an outer layer made of, 50 to 100% of at least one polyamide A1 of formula X.Y/Z or 6.Y2/Z in which: “6” represents the residues of hexamethylene diamine, X denotes the residues of a C6-10 aliphatic, Y denotes the residues of an aliphatic C10-14 dicarboxylic acid, Y2 denotes the residues of an aliphatic C15-20 dicarboxylic acid, and Z denotes at least one unit chosen from the residues of a lactam, the residues of an ?,?-aminocarboxylic acid, the unit X1,Y1 in which X1 denotes the residues of an aliphatic diamine and Y1 denotes the residues of an aliphatic dicarboxylic acid, the weight ratios Z/(X+Y+Z) and Z/(6+Y2+Z) being between 0 and 15%, an inner PA-6 layer or a layer of a PA-6/polyolefin blend having a PA-6 matrix and optionally containing a conductor.

Abstract: Compounds of the formula (I), in which R1, R2, R3, R4 and R5 have the meanings indicated in claim 1, are inhibitors of cell proliferation/cell vitality and can be employed for the treatment of tumors.

Abstract: The invention relates to the use of ?-amino acid derivatives for improving the solubility of sparingly soluble substances in water or aqueous solutions, and to mixtures and preferred compositions.

Abstract: The invention relates to a washing column (T) for implementing a physical gas washing. Gas (1) is sent from the bottom to the top and washing agent (2) is sent from the top to the bottom through the washing column. At least two washing sections (WS1, WS2) are arranged on top of one another in the washing column (T). The top section (WS2) is bounded at the bottom by a riser base (K), from which a portion of the washing agent that is charged into the top washing section can be introduced as washing agent into the lower washing section (WS1). Another portion of the washing agent can be removed from the washing column (T) via a lateral drain (4). The top washing section (WS2) is connected to the lower washing section (WS1) by an overflow (U), via which charged washing agent from the riser base (K) can be introduced into the lower washing section (WS1).

Abstract: The present invention relates to novel articles, especially non-woven articles comprising fibers and/or fibrids. It also relates to novel fibers and fibrids and to a process for obtaining these fibers and fibrids.