Abstract: A slide gate valve for chemical and/or petrochemical industrial plants, the valve including a valve housing including an inlet port having an exit opening and an outlet port having an entry opening, which correspond with each other when the slide gate valve is in an open position; a blocking device having at least one blocking disc and having a pipe bridge, which is movably arranged between the inlet and outlet ports in order to open and close the valve; and at least one guiding device for guiding flow, wherein the guiding device has at least one guiding element, which is located on an inner wall of the inlet port and reduces the exit opening of the inlet port such that, as the slide gate valve is opened, an opening cross section of the exit opening is enlarged at the moment of an initial, flow ingress into the pipe bridge.

Abstract: The invention relates to a measuring system for industrial valves, in particular for plants in the fields of chemistry, petrochemistry, iron or steel production, glass production, or energy and environmental technology, for measuring the position of a movable component of the valve, wherein a measuring device for transmitting and receiving radar signals is connected to a probe for guiding the radar signals, wherein a reflective element is guided in the probe and can be coupled to the movable component in such a way that a position of the component corresponds to a position of the reflective element in the probe.

Abstract: The invention relates to a measuring system for industrial valves, in particular for plants in the fields of chemistry, petrochemistry, iron or steel production, glass production, or energy and environmental technology, for measuring the position of a movable component of the valve, wherein a measuring device for transmitting and receiving radar signals is connected to a probe for guiding the radar signals, wherein a reflective element is guided in the probe and can be coupled to the movable component in such a way that a position of the component corresponds to a position of the reflective element in the probe.

Abstract: The present invention relates to a process for producing (cyclo)aliphatic polycarbonate polyols comprising the steps of a) reaction of at least one (cyclo)aliphatic polyol and at least one alkyl carbonate in the presence of at least one basic catalyst and b) neutralization by addition of at least one organic sulfonic acid having a molecular weight of 250 to 1000 g/mol and at least one branched or unbranched alkyl substitution having at least four carbon atoms, wherein step b) is performed after step a).

Abstract: The application relates to a process for continuously producing aqueous polyurethane dispersions, which is characterized by the use of micro structured mixing elements and addition of water twice during the dispersion step. The energy input in the mixing of the dispersion is low. In addition, the application describes an apparatus suitable for execution of the aforementioned process.

Abstract: The present invention relates to a process for producing (cyclo)aliphatic polycarbonate polyols comprising the steps of a) reaction of at least one (cyclo)aliphatic polyol and at least one alkyl carbonate in the presence of at least one basic catalyst and b) neutralization by addition of at least one organic sulfonic acid having a molecular weight of 250 to 1000 g/mol and at least one branched or unbranched alkyl substitution having at least four carbon atoms, wherein step b) is performed after step a).