Expandable thermoplastic resin particles having excellent heat resistance, solvent resistance, foamability and moldability comprising a copolymer of 10 to 80% by weight of alpha -methylstyrene, 5 to 50% by weight of acrylonitrile and 0 to 70% by weight of at least one member selected from the group consisting of styrene, methyl methacrylate, vinyl toluene and t-butylstyrene, and an expanding agen...

A method of filming the surface of a plywood used for formwork, the method comprising dispersing a first dose of an adhesive polyolefine resin powder on the surface of the plywood, heating the dispersed resin powder on the plywood, thereby enabling the resin powder to spread thereon in a molten state, dispersing a second dose of non-adhesive polyolefine resin powder, heating the second dose of res...

This method and apparatus is directed to measuring flow velocity of a flowing solid or fluid in a pipe. In the preferred and illustrated embodiment, a single magnet is utilized to impress a magnetic field on the flow, the field having a gradient. A concentrically arranged detection coil is positioned in the field and is connected with a nuclear magnetic resonance (NMR) or electron magnetic resonan...

For the cost-effective recovery of uranium or other valuable substances dissolved in sea water, in which the sea water flows through adsorber granules, the invention proposes that, in order to increase the rate of flow and improve the adsorption efficiency, the adsorber granules be moved within a closed circulation path through flowing sea water in parallel flow and the depleted sea water be separ...

The joining of two profile strips of plastic is carried out by means of a connecting part introduced from the reverse side into the strips. The join according to the invention is characterised by a connecting part of a metallic material which is moulded into the profile strips from the reverse side. In the process the necessary stability is attained by the use of the connecting part made of metal....

The invention relates to a hydraulic binder which has a controlled start of setting and reaches high strength already at the beginning of solidification. The hydraulic binder is produced from 85 to 99.89% of a cement clinker, which has been ground to a specific surface area of 150 to 3000 m<2>/kg and in which 5 to 95% by weight of the particles are smaller than 5 mu m, 0.01 to 10% by weight of a ...

The coil form has auxiliary points of support for the winding ends in the form of two retaining lugs each, which enclose between them a breakthrough in the coil form. After the coil is wound, a metallic connecting element can be inserted into this breakthrough so that its free end is positioned between the retaining lugs and can be soldered to the winding ends already applied to the retaining lugs...

The invention relates to a transcutaneous or transgingival implant having a body 1 made of a bioinert material, whose subcutaneous or subgingival part 2 is anchored in bone tissue, and, in the region of the passage of the body 1 through the skin or mucosa 4, a ring 5 having at least a surface layer, which is contacted by the skin or mucosa, of a bioactive material. Bioinert materials such as titan...

An improved receptor-reradiator, for use in a surveillance system employing a carrier frequency of UHF or higher in combination with a low frequency electrostatic field signal to be modulated on the carrier signal by the reradiator, is provided by an antenna frame wherein the metallic foil of which it is made is divided into three parts. The first part is U-shape of substantially one width and joi...

Platinum-styrene complexes are prepared by reacting a platinum halide with styrene or substituted styrenes in the presence of a basic material for a sufficient amount of time to form a complex having more than one and less than four gram atoms of halogen per gram atom of platinum. These platinum-styrene complexes may be used to promote the addition of organosilicon compounds having at least one 3...

The dipped light headlamp for motor vehicles has an axial coil (17), which is located in front of the inner focal point (14) of the elliptical vertical meridian (12), and the coil axis (18) is arranged parallel to and above the optical axis (16). The optically effective edge (21) of the shutter (20) is arranged beneath and behind the outer focal point (15). A following objective (22) is a body of ...

The bathing water to be treated is passed via an inlet line (1) into a first aeration chamber (4) and there aerated with fresh air in fine bubbles. Before the introduction, CO2 is added to the fresh air via a line (17). After the first aeration, the bathing water passes into a first reaction chamber (7) which contains a bed (10) of coarse-grained activated charcoal enriched with urea-degrading bac...

Impregnating agents for the preparation of non-flammable or poorly flammable articles made of paper, cardboard, wood, leather, textiles or other flammable materials, which consists of binder, solvent and, if appropriate, other additives and as binder essentially contains chlorinated rubber and chloroparaffin.

PURPOSE:To obtain a groove in sub-micron width, and to improve the degree of integration of an IC such as a RAM by using projection exposure technique, chemical vapor-phase growth technique for a mask film and anisotropic dry etching technique when the U-shaped groove is bored to a semiconductor substrate. CONSTITUTION:A first mask film 22 consisting of SiO2 is grown on an Si substrate 21 through ...

PURPOSE:To improve the dampproof property of a semiconductor device effectively by constituting a surface protective film by a polymer containing an isomelamine ring and a melamine ring in the semiconductor device containing a semiconductor element with the surface protective film and a resin sealing body sealing the semiconductor element. CONSTITUTION:A semiconductor element 1 is fixed onto a sup...

A method for detecting the ignition timing for an engine comprising the steps of detecting the production in a crank angle range outside of the range where ignition can occur of a crank angle signal by a crank angle sensor at a first time point, detecting an ignition signal corresponding to the burning flame within the combustion chamber of the engine at the second time point, calculating the time...

The invention provides an apparatus for electrical resistance welding of metal prostheses in the environment in which they are used, eg. of dental prostheses directly in the buccal cavity or also orthopaedic prostheses already in situ, for which fairly large thicknesses of the metal parts are necessary, such as for hand, foot and jaw-bone fractures and small fractures of this type. The apparatus h...

(E)-5-(2-bromovinyl)-2'- deoxyuridine and its derivatives of general formula VI (where R is H or as defined below) are prepared from 3,5'-di-O-acyl-5-ethyl- 2'-deoxyuridines of general formula IV (wherein R is C1-8 alkanoyl, benzoyl or benzoyl group substituted in para position by C1-4 alkyl or halogen) by reaction with bromine to give a dibromo derivative of general formula V ...