Abstract: The invention provides a polymer composition comprising (a) a copolymer comprising in polymerized form at least one vinyl ester (i) of a monocarboxylic acid having 2 to 4 carbon atoms and at least one vinyl ester (ii) of a monocarboxylic acid having at least 5 carbon atoms and (b) a copolymer different from copolymer (a) and comprising in polymerized form vinyl acetate and ethylene. In addition the invention concerns compositions comprising an inorganic hydraulic binding agent and said polymer composition; and uses of said polymer composition, especially in tile adhesives.

Abstract: An exhaust-gas catalytic converter for the purification of exhaust gases from internal combustion engines comprising: a catalytic converter body having a multi-part jointed housing having a front end for receiving exhaust and a back end for expelling exhaust with the ends forming open cross-sections. The catalytic converter body cross-section has a profile with differing numbers of cells per unit area and to change in a region-specific manner. To control the inflow of exhaust gases into the catalytic converter, there is an inflow device for providing a variable focus which allows a portion of the catalytic converter body to receive exhaust at varying levels. This inflow device opens to varying levels to the catalytic converter body based on low or high exhaust gas outputs.

Abstract: The invention concerns redispersible polymer powders which can be used in a variety of ways, for example, in hydraulically binding systems, but also as binder in greatly varied applications and which can be produced by spray-drying of aqueous dispersions. The sprayable aqueous dispersions are prepared by mixing an aqueous polymer dispersion 1 (containing polymer I) with an aqueous polymer dispersion 2 (containing polymer II) where the diameters of the particles of polymer I are greater by a factor of 5 to 150, preferably 15 to 50, than the diameter of the particles of polymer II, and polymer I is a polymer which forms films at room temperature, while polymer II has a glass transition temperature which is higher than that of polymer I, is insoluble in water and thus it is present in the undissolved form in the aqueous dispersion to be sprayed. The polymer powders according to the invention excel by a clearly improved resistance to blocking and very good storage stability.