Abstract: Hot-curing reactive compositions based on natural and/or synthetic elastomers which contain olefinic double bonds and vulcanization agents which contain, apart from conventional liquid polyenes, at least one liquid cis-1,4-polyisophere with a molecular weight between 20 000 and 70 000 and a vulcanization system consisting of sulfur, accelerators and quinonoximes, exhibit plastisol-like flow characteristics so that they can be applied at room temperature using conventional spray units. These compositions are suitable as joint-sealing and sealing compositions, as underseal adhesives and as structural adhesives such as e.g. lap-joint adhesives.

Abstract: A invention relates to a method for the investigation of house dust with respect to a potential for inducing an allergic reaction, by mixing the house dust with a protein detector for the determination in order of size of protein-containing constituents contained in the house dust; additionally, the invention also relates a detecting agent for the estimation of a potential of house dust for inducing allergic reactions using a detection constituent for characterizing a protein component.

Abstract: The invention pertains to a filter bag (8) for a vacuum cleaner (1), with a retainer plate (16) made of a cardboard-paper material that can be attached to a dust bag (37), for example by gluing, and that has a sealable opening (19) for a suction tube (vacuum connector (18)) of a vacuum cleaner (1), where the opening (19) can be closed off with a separate closure piece (V) which can be moved from an open position to a closure position, being slid between two tiers (38, 40). For greater ease of handling the invention proposes that the closure piece (V) be practically fully enclosed in an outer contour of the retainer plate (16) in the open position and in the closure position and that the closure piece (V) lie exposed in a recess (57) of the uppermost tier (38) separate from the opening (19), the longitudinal extension of the recess (57) conforming to the closure piece (V).

Abstract: A dust filter bag for a vacuum cleaner, having a holding plate (1) of a cardboard paper material, which holding plate (1) has a sealing-closable opening (9) for a suction pipe of a vacuum cleaner, the opening (9) being adapted to be closed from the outside by a separate closure tab (10) which has an insertion region, and, in order to obtain an improved dust filter bag, the cardboard-paper material is developed in three layers (layers a, b, c) in the region of the opening (9) and in at least two layers in the remaining region of the holding plate (1), a rubber gasket (11) being gripped between two layers, preferably the second and third layers (b, c).

Abstract: A keyboard for electronic equipment screens off RF radiation by using a conductive housing (2), preferably made of extruded aluminum, which is closed off at its two ends by conductive end pieces (25) and which is closed off underneath by a conductive base plate (30). Key switches (9) extend through openings in a conductive frame (15) that is mounted inside the housing (2), which itself has openings (5, 6) for passage of the key switches (9). The elements are configured to reduce the level of any RF radiation that escapes from inside the keyboard. Among other advantages, this reduction of escaping RF radiation prevents illicit detection and decoding of information which is being entered via the keyboard.