Abstract: Alkylketene dimers are prepared by reacting acyl chlorides with tertiary amines in a molar ratio of from 1:1 to 1:1.6 at from 65 to 150° C. and with a residence time of from 1 to 30 minutes in the absence of solvents with thorough mixing and isolation of the alkylketene dimers.

Abstract: The present invention relates to a method for the preparation of a solid formulation of a slow-release crop protection product, which comprises carrying out a melt extrusion of a composition comprising 0.1 to 80% by weight of at least one fungicidal active ingredient, 0 to 80% by weight of at least one herbicidal, acaricidal, insecticidal or growth-regulatory active ingredient, 3 to 80% by weight of a thermoplastic, water-insoluble polymer from the group of the polylactides, 0 to 80% by weight of at least one thermoplastic water-insoluble polymer, 10 to 80% by weight of at least one mineral filler and 0 to 20% by weight of inorganic or organic additives, and subsequently shaping the extrudate, and to the solid formulations preparable by this method.

Abstract: A method for producing a molded article, preferably a sheet-type molded article, which method comprises the following stage:

Abstract: The invention relates to a process and an apparatus for the thermal treatment of powdered or granular solid substances with gas flows (7, 16, 22, 23, 24) by means of a body (2) moved about its axis of rotation (1).

Abstract: The bipolar plate for PEM fuel cells made of a polymer blend which is filled with conductivity-enhancing carbon fillers and which includes at least two mutually nonmiscible blend polymers, is distinguished by the fact that the at least two blend polymers form a co-continuous structure and the carbon fillers are at a higher concentration in one of the blend polymers or in the phase between the blend polymers, or that a blend polymer in which the carbon fillers are at a higher concentration forms a continuously conductive matrix in which the at least one further blend polymer is intercalated.

Abstract: An air outlet device (1) for vehicles, in particular airplanes, comprises a panel (2) with at least one receiving opening, an air outlet (3) arranged in the receiving opening, and a sealing means (6) sealing the air outlet (3) and the panel (2) against each other. At the panel (2) and/or the air outlet (3), a securing means (8) is configured, it serves to mount the air outlet (3) to the panel (2). During the assembly of the air outlet device (1), the securing means (8) holds the air outlet (3) in a defined position in the panel (2) so that curing adhesives can be used as sealing means (6) without any problem.

Abstract: A process for producing pellets comprising biologically active substances in which the biologically active substances are homogeneously dispersed in a matrix based on at least one thermoplastic polymer, which polymer has in aqueous medium a pH-dependent solubility, by homogeneous mixing of the starting materials in the melt and subsequent extrusion and shaping, which comprises the shaping being performed in a cooling medium in which the pellets are not soluble or dispersible.

Abstract: Bimodal polyethylene blends are made from a high-molecular-weight ethylene copolymer and a low-molecular-weight ethylene homo- or copolymer and have a melt flow rate MFR 190/21.6 of from 6 to 14 g/10 min, a density of from 0.94 to 0.97 g/cm3, an environmental-stress-cracking resistance ESCR>150 h and a value of less than 3 when the quality of blending in the blend is measured to ISO 13949. A process prepares polyethylene blends of this type by melting and homogenization in a mixing apparatus and discharge via a gear pump. The blends are used to produce moldings, in particular hollow articles and pressure pipes.

Abstract: Solid formulation of a crop protection product can be obtained by melt extrusion and shaping of a mixture consisting of: 0.1-80% by wt. of an active ingredient which can be used in crop protection, or of a combination of such active ingredients, 10-80% by wt. of at least one mineral filler, 0-20% by wt. of inorganic or organic additives, and to 100% by wt.

Abstract: In a method for granulating thermoplastic polymers, in particular thermoplastic polyolefins, the polymer powder prepared in the polymerization reactor is melted and homogenized in an extruder, then forced through an extrusion die and granulated. In accordance with the invention, the polymer powder is subjected to heat treatment before introduction into the extruder, resulting in the introduction of the polymer powder into the extruder being carried out at an elevated powder temperature. The invention is particularly suitable for the granulation of polyethylene or polypropylene.

Abstract: The invention relates to a method for producing granulates which contain enzymes and which are suited for feeding animals. The granulates are produced by mixing at least one enzyme with a supporting material and by extruding this mixture. The inventive method is characterized in that the supporting material is firstly plasticized in a screw mixer which is equipped with at least one horizontally arranged screw. Afterwards, the enzyme is introduced into the screw mixer and is processed with the plasticized supporting material to produce a homogeneous material which is then extruded.

Abstract: A method and a device (4) for testing an integrated circuit (DUT) uses a stress signal and surface monitoring. A stress signal generator (5) is connected to the integrated circuit (DUT) to apply the stress signal (v(t)) to the integrated circuit. A failure is observed in real time by monitoring the surface (6) of the integrated circuit (DUT) during a monitoring time window (&Dgr;T) by an emission microscope (10) having a controllable shutter (15). The time window has a predetermined relation with respect to the duration of the stress signal.

Abstract: An optical filter arrangement that is especially useful for optical signal transmission, multiplexing and demultiplexing purposes has an optical filter, a reflecting arrangement, and a holder for holding the optical filter and the reflecting arrangement.

Abstract: This invention provides an apparatus and method for injecting an additive directly into a polymer melt stream. The method comprises supplying a melt flow of a polymeric host material to a die assembly having a thin-plate assembly and injecting at least one additive into at least one predetermined location in a cross-section of the melt flow of the polymeric host material while the melt flow passes through the die assembly. The method achieves uniform dosing of the one or more additives in the extrusion direction in the polymeric host material without homogeneously mixing the one or more additives and the polymeric host material. The apparatus for directly injecting one or more additives into a polymer melt stream comprises a pumping system, a die assembly having a thin-plate assembly, and a distribution line.

Abstract: A process for producing solid dosage forms, in which (i) a plastic mixture of at least one pharmacologically acceptable polymeric binder with a K value of more than 75, at least one pharmaceutical active ingredient and, where appropriate, conventional pharmaceutical additives is prepared and (ii) the plastic mixture is shaped to the required dosage form, with step (i) being carried out under conditions of temperature and shear energy input such that the reduction in molecular weight of the polymeric binder, expressed as the difference in the K value, is less than 15 is described.

Abstract: This invention provides an apparatus and method for injecting an additive directly into a polymer melt stream. The method comprises supplying a melt flow of a polymeric host material to a die assembly having a thin-plate assembly and injecting at least one additive into at least one predetermined location in a cross-section of the melt flow of the polymeric host material while the melt flow passes through the die assembly. The method achieves uniform dosing of the one or more additives in the extrusion direction in the polymeric host material without homogeneously mixing the one or more additives and the polymeric host material. The apparatus for directly injecting one or more additives into a polymer melt stream comprises a pumping system, a die assembly having a thin-plate assembly, and a distribution line.

Abstract: Disclosed is a temperature controlled radiation transmission material for plural component films, the material being present in one or more cores allsidedly surrounded by a transparent sheath layer. The plural component films are particularly useful for the reversibly temperature dependent control of the radiation transmission of buildings and of technical facilities, especially solar energy apparatus, in the apparel industry and/or for decorative purposes.

Abstract: A television flat panel display which has a housing, a viewing screen disposed in the housing; the viewing screen comprises a first sheet disposed in the housing as the front sheet of the display, a power input arrangement configured and disposed to power the display, an arrangement to produce picture elements as pixels, this arrangement at least comprising: an array of electrodes, a material configured to be energized by the electrodes, and addressing circuitry connected to the electrodes and the power input arrangement, the addressing circuitry being configured to convert electrical signal input to the material configured to be energized into optical signal output viewable as pixels on a particular point on the first sheet of the display. The material to be energized and the electrodes are disposed in a channel member. The channel member comprises a plate-like structure with a plurality of ribs forming a plurality of grooves with groove bottom surfaces.

Abstract: A television flat panel display which has a housing, a viewing screen disposed in the housing; the viewing screen comprises a first sheet disposed in the housing as the front sheet of the display, a power input arrangement configured and disposed to power the display, an arrangement to produce picture elements as pixels, this arrangement at least comprising: an array of electrodes, a material configured to be energized by the electrodes, and addressing circuitry connected to the electrodes and the power input arrangement, the addressing circuitry being configured to convert electrical signal input to the material configured to be energized into optical signal output viewable as pixels on a particular point on the first sheet of the display. The material to be energized and the electrodes are disposed in a channel member comprising a plate-like structure with a plurality of ribs forming a plurality of grooves.

Abstract: This invention provides an apparatus and method for injecting an additive directly into a polymer melt stream. The method comprises supplying a melt flow of a polymeric host material to a die assembly having a thin-plate assembly and injecting at least one additive into at least one predetermined location in a cross-section of the melt flow of the polymeric host material while the melt flow passes through the die assembly. The method achieves uniform dosing of the one or more additives in the extrusion direction in the polymeric host material without homogeneously mixing the one or more additives and the polymeric host material. The apparatus for directly injecting one or more additives into a polymer melt stream comprises a pumping system, a die assembly having a thin-plate assembly, and a distribution line.