Abstract: The invention relates to a protective coating for a mechanically stabile, in particular mineral and/or metallic base, comprising an inorganic polysilicate-cohesion adhesive layer which is uniformly distributed, essentially, on the base. A coating made of a glass film material having a thickness of less than 2 mm, preferably, less than 0.3 mm, is applied to the polysilicate cohesion adhesive layer prior to the hardening thereof, which covers the polysilicate-cohesion adhesive layer. According to the method for producing the protective coating, initially, the inorganic polysilicate-cohesion adhesive and the glass film material are prepared, then the cohesion adhesive is applied to the base which is to be coated and/or one side of the glass film material, and the glass film material is applied to the base which is to be coated prior to hardening of the polysilicate-cohesion adhesion layer, such that the glass film material covers the cohesion adhesion layer. Subsequently, the cohesion adhesion layer is hardened.

Abstract: A method of producing acid resistant anti-static building material covering is presented. The method uses a pasty or liquid joint filling mixture of alkali metal silicate binder and powder components.

Abstract: A mixing chamber (3) and a gas inlet chamber (5) are concentrically arranged in a closed housing (1) and divided from one another by a tubular partition wall (7) provided with micropores. A flow of a liquid, foamable medium is introduced by a pump (21) axially into the mixing chamber (3). At the same time, air produced by a compressor (23) is introduced via a housing inlet (17) into the gas inlet chamber (5) under such a pressure that the air can penetrate through the micropores in the tubular partition wall (7) into the mixing chamber (3). The partition wall (7) surrounding the mixing chamber and the peripheral wall (9) are replaceably mounted between two flanges (11 and 12). The cross-sectional profile of the axial inlet and outlet (15 and 16) is matched to the cylindrical cross-section of the mixing chamber (3) so that in operation a laminar flow of the foam mixture substantially parallel to the axis occurs through the mixing chamber (3).