Basf Se Corporation

Tom Catternan

Oskar Stephan

Matthias Weismantel

Monte Alan Peterson

Ruediger Funk

Karl Possemiers

Sylvia Bertha

Gerald Gruenewald

Roland Schuhmann

A process for producing superabsorbents, comprising the steps of i) classifying the superabsorbent particles by means of one or more sieves and ii) removing metallic impurities by means of one or more magnetic separators, wherein classification is accomplished using sieves made of a wire mesh, the wires of the wire mesh consist of a steel composed of at least 70% by weight of iron, at least 10% by weight of chromium and less than 2.5% by weight of nickel, and the throughput of superabsorbent particles in the magnetic separator is in the range from 2.0 to 6.5 g/s per cmof free cross-sectional area.

Method for the production of superabsorbers

The invention relates to a device () and to a method for the contactless detection of a torque of a shaft () and/or torsional natural frequencies and/or torsional oscillations. The shaft () contains a ferromagnetic material. A measurement head () facing toward a shaft wall () comprises an excitation coil () which couples a magnetic field into the shaft (). The measurement head () furthermore contains a number of measurement coils (), which measure the magnetic field emerging from the shaft ().

Device and method for sensing torques, torsional natural frequencies, and/or torsional oscillations without contact

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Geismar, LA, United States of America

Tom Catternan