Abstract: The present invention relates to a method for producing soft polyurethane foams, which have in particular a low compression hardness and/or a low compression set value (DVR), using aliphatic oligomeric polyisocyanates and monohydroxy-functional compounds, and the use of aliphatic oligomeric polyisocyanates in combination with monohydroxy-functional compounds in order to reduce the compression hardness and/or the compression set value (DVR) of soft polyurethane foams. The invention also relates to a soft polyurethane foam, that is preferably flexible, which is produced or can be produced by the aforementioned method and has a low compression hardness and/or a low compression set value (DVR), as well as to the use thereof, for example, for the production of body-supporting elements such as upholstery, mattresses, furniture, automobile seats, and motorbike seats.

Abstract: The present invention relates to a computer-implemented method for monitoring at least one exhaust gas purification system for purifying an exhaust gas stream to be purified of an industrial system or an industrial process. The method comprises retrieving system data of the exhaust gas purification system from a data cloud. The system data stored in the data cloud were at least partially received beforehand by the data cloud from the exhaust gas purification system. The system data relate to at least measurement data of at least one sensor of the exhaust gas purification system and/or data about at least one adjustable parameter of the exhaust gas purification system. The method further comprises determining at least one quantity characterizing the exhaust gas purification system based on the retrieved system data.

Abstract: The invention relates to a method for the post-treatment of 3D objects (10) printed from a light-curing resin formulation. A 3D object (10) removed from a 3D printer is post-treated according to the following steps: a) exposing the surface (11) of the 3D object (10) to a post-treatment liquid (16) comprising a light-curing resin formulation for a prescribed exposure time, wherein the post-treatment liquid (16) and the exposure time are chosen such that the post-treatment liquid (16) can penetrate into a crack (12) or a pore (13) on the surface (11) of the 3D object within the exposure time as a result of capillarity; b) removing the post-treatment liquid (16) remaining on the surface of the 3D object (10); and c) irradiating the 3D object (10) with light for post-curing the light-curing resin formulation used for the printing of the 3D object (10) and curing the post-treatment liquid (16) that has penetrated into cracks (12) and/or pores (13) on the surface (11) of the 3D object (10).

Abstract: A method for defect detection in a sample, such as in a semiconductor sample, includes the following steps: providing a reference image of the sample; providing a sample image generated via a particle beam inspection system, wherein the sample image comprises a rotation with respect to the reference image; dividing the sample image into sample image regions; dividing the reference image into reference image regions, wherein each sample image region is assigned one reference image region to form an image region pair; identifying in each image region pair a structure that is present both in the sample image region and also in the associated reference image region of the image region pair; registering the sample image regions by correcting a lateral offset of the identified structure in each sample image region on the basis of the location of the identified structure in the respectively associated reference image region, as a result of which corrected sample image regions are formed; and comparing each corrected

Abstract: A recuperative burner (20) for introducing a process air (A) to be treated into the combustion space (15) of the combustion chamber of a thermal process air treatment device (10) and for discharging the flue gas (E) from the combustion space (15) comprises a heat transfer sector (40) having an internal space (46) in which a plurality of process air tubes (43) for introducing the process air (A) to the combustion space (15) extend.

Abstract: An improved regenerative separating device for separating impurities from an airflow, in particular a process exhaust airflow, provides a better distribution of the airflow in an annular gap between a rotary separating unit including a plurality of filter blocks for adsorbing impurities from the airflow and a circumferential wall of a housing incorporating the rotary separating unit. The airflow inlet provided in the circumferential wall for introducing the airflow into the annular gap and a regeneration system for regenerating the filter blocks of the rotary separating unit by a regenerating stream passing through the filter blocks to desorb impurities adsorbed in the filter blocks are both positioned in the same circumferential sector of maximum 180 degrees.

Abstract: The invention relates to a method for producing soft polyurethane foam obtained by reacting a composition containing a component A1 containing at least one filled polyol, a component A2 containing compounds reactive with isocyanates and having a hydroxyl value of ?20 to <100 mg KOH/g, the component A2 not containing any filled polyol, a component A3 containing water and/or at least one physical blowing agent, a component A4 containing auxiliary agents and additives, and a component B containing di- and/or polyisocyanates, characterized in that the reaction occurs in the presence of 0.5 to 3 parts by weight of an organic urea derivative as component C, which is obtained by reacting urea with a difunctional amine having a number-average molecular weight of 200 to 1000 g/mol. The invention also relates to a soft polyurethane foam obtainable by the method.

Abstract: The invention relates to a method for producing soft polyurethane foam obtained by reacting a composition containing a component A1 containing at least one filled polyol, a component A2 containing compounds reactive with isocyanates and having a hydroxyl value of ?20 to <100 mg KOH/g, the component A2 not containing any filled polyol, a component A3 containing water and/or at least one physical blowing agent, a component A4 containing auxiliary agents and additives, and a component B containing di- and/or polyisocyanates, characterized in that the reaction occurs in the presence of 0.5 to 3 parts by weight of an organic urea derivative as component C, which is obtained by reacting urea with a difunctional amine having a number-average molecular weight of 200 to 1000 g/mol. The invention also relates to a soft polyurethane foam obtainable by the method.

Abstract: An improved regenerative separating device for separating impurities from an airflow, in particular a process exhaust airflow, provides a better distribution of the airflow in an annular gap between a rotary separating unit including a plurality of filter blocks for adsorbing impurities from the airflow and a circumferential wall of a housing incorporating the rotary separating unit. The airflow inlet provided in the circumferential wall for introducing the airflow into the annular gap and a regeneration system for regenerating the filter blocks of the rotary separating unit by a regenerating stream passing through the filter blocks to desorb impurities adsorbed in the filter blocks are both positioned in the same circumferential sector of maximum 180 degrees.

Abstract: The present invention relates to a computer-implemented method for monitoring at least one exhaust gas purification system for purifying an exhaust gas stream to be purified of an industrial system or an industrial process. The method comprises retrieving system data of the exhaust gas purification system from a data cloud. The system data stored in the data cloud were at least partially received beforehand by the data cloud from the exhaust gas purification system. The system data relate to at least measurement data of at least one sensor of the exhaust gas purification system and/or data about at least one adjustable parameter of the exhaust gas purification system. The method further comprises determining at least one quantity characterizing the exhaust gas purification system based on the retrieved system data.

Abstract: The present invention relates to a computer-implemented method for monitoring at least one exhaust gas purification system for purifying an exhaust gas stream to be purified of an industrial system or an industrial process. The method comprises retrieving system data of the exhaust gas purification system from a data cloud. The system data stored in the data cloud were at least partially received beforehand by the data cloud from the exhaust gas purification system. The system data relate to at least measurement data of at least one sensor of the exhaust gas purification system and/or data about at least one adjustable parameter of the exhaust gas purification system. The method further comprises determining at least one quantity characterizing the exhaust gas purification system based on the retrieved system data.

Abstract: The present invention relates to a process for producing flame-retarded polyurethane foams, in particular flexible polyurethane foams, using halogen-free flame retardants, wherein the resulting flame-retarded polyurethane foams exhibit low emission values coupled with good mechanical properties. The present invention further relates to halogen-free flame retardants.

Abstract: An improved regenerative separating device for separating impurities from an airflow, in particular a process exhaust airflow, provides a better distribution of the airflow in an annular gap between a rotary separating unit comprising a plurality of filter blocks for adsorbing impurities from the airflow and a circumferential wall of a housing incorporating the rotary separating unit. The airflow inlet provided in the circumferential wall for introducing the airflow into the annular gap and a regeneration system for regenerating the filter blocks of the rotary separating unit by a regenerating stream passing through the filter blocks to desorb impurities adsorbed in the filter blocks are both positioned in the same circumferential sector of maximum 180 degrees.

Abstract: An improved regenerative separating device for separating impurities from an airflow, in particular a process exhaust airflow, provides a better distribution of the airflow in an annular gap between a rotary separating unit comprising a plurality of filter blocks for adsorbing impurities from the airflow and a circumferential wall of a housing incorporating the rotary separating unit. The airflow inlet provided in the circumferential wall for introducing the airflow into the annular gap and a regeneration system for regenerating the filter blocks of the rotary separating unit by a regenerating stream passing through the filter blocks to desorb impurities adsorbed in the filter blocks are both positioned in the same circumferential sector of maximum 180 degrees.

Abstract: The present invention relates to a process for producing flame-retarded polyurethane foams, in particular flexible polyurethane foams, using halogen-free flame retardants, wherein the resulting flame-retarded polyurethane foams exhibit low emission values coupled with good mechanical properties. The present invention further relates to halogen-free flame retardants.

Abstract: The present invention relates to a process for producing flame-retarded polyurethane foams, in particular flexible polyurethane foams, using halogen-free flame retardants, wherein the resulting flame-retarded polyurethane foams exhibit low emission values coupled with good mechanical properties. The present invention further relates to halogen-free flame retardants.

Abstract: The present invention relates to a process for producing polyurethane foams, preferably moulded flexible polyurethane foams, by reacting an isocyanate component which is a mixture obtained in the production of tolylene diisocyanate as a bottoms residue, and at least one further isocyanate component with a component reactive toward isocyanates. The invention further relates to polyurethane foams produced by the process according to the invention and to the use thereof.

Abstract: A device for shielding teeth to be treated in order to prevent an inflow of liquid, such as saliva or bloody the device comprising a partial dental dam (1) comprising a tensioning cloth (2) made of an elastic material designed to be introduced into at least one intermediate tooth space (11) when in an elongated state, and two actuation elements (3) arranged on opposing ends of the tensioning cloth (2) for use in pulling the tensioning cloth (2) into an elongated state, and use of the device for shielding teeth to be treated.

Abstract: The invention relates to a device for shielding teeth to be treated in order to prevent an inflow of liquid, such as saliva or blood for example, and to a use of the device according to the invention. The invention relates to a partial dental dam (1) for protecting teeth to be treated, comprising a tensioning cloth (2) made of an elastic material and two actuation elements (3) arranged on opposing ends of the tensioning cloth (2). The tensioning cloth (2) is designed to be introduced into at least one intermediate tooth space (11) from the occlusal side in a first tensioned state, which can be achieved by pulling apart the actuation elements (3) in a tensioning direction (90), and to sealingly rest against the interdental gingiva and the approximal surfaces of the teeth (10) forming the at least one intermediate tooth space (11) in a second state after being introduced into the at least one intermediate tooth space (11).

Abstract: The present invention relates to a process for producing flame-retarded polyurethane foams, in particular flexible polyurethane foams, using halogen-free flame retardants, wherein the resulting flame-retarded polyurethane foams exhibit low emission values coupled with good mechanical properties. The present invention further relates to halogen-free flame retardants.