摘要:
A radial compressor includes a rotor arrangement having a rotating shaft, a rotor wheel that is arranged on the shaft and corotates with the shaft, and a shaft bearing arranged on the shaft. To achieve improved rotor dynamics, the rotor wheel has a recess toward the shaft, in which the shaft bearing is at least partially arranged.
摘要:
A fluid energy machine is provided. The fluid energy machine includes a housing having a motor, an impeller, at least two radial bearings, and a shaft which extends along a shaft longitudinal axis and which supports the impeller and a rotor of the motor wherein the shaft is mounted in the radial bearings. The motor includes a stator which at least partially surrounds the rotor in the region of the motor. A gap which extends in the circumferential direction along the shaft longitudinal axis is formed between the rotor and stator and between the rotor and the radial bearings, which gap is at least partially filled with fluid. The motor is embodied as a bearing and is connected to a controller which activates the motor so that forces acting radially with respect to a shaft longitudinal axis can be exerted in addition to torques for driving the fluid energy machine.
摘要:
The process for the application of a metal layer on a substrate by deposition of a metal from a metal salt solution comprises the presence of exfoliated graphite in the substrate surface.
摘要:
The invention relates to processes for producing nanoparticles, especially pigment particles, comprising the following steps: i) bringing a base substance (1) into the gas phase, ii) generating particles by cooling or reacting the gaseous base substance (1), and iii) applying electrical charge to the particles during particle generation in step ii) in a nanoparticle generation apparatus. The invention further relates to apparatus for producing nanoparticles, having a feed line (28) for transporting the gas stream (29) into the apparatus, a particle generation and charging area for substantially simultaneous generation and charging of nanoparticles, and a takeoff line (30) for transporting the charged nanoparticles from the particle generation and charging area.
摘要:
The invention relates to reaction products of 2-propylheptanol with 1-halo-2,3-epoxypropanes and 1-hydroxy-2,3-epoxypropane (glycidol), to methods for their production, and to their use as cosurfactants, cleaning surfactants or thickeners.
摘要:
Method for producing structured electrically conductive surfaces on a substrate, which comprises the following steps: a) structuring a base layer containing electrolessly and/or electrolytically coatable particles on the substrate by ablating the base layer according to a predetermined structure with a laser, b) activating the surface of the electrolessly and/or electrolytically coatable particles and c) applying an electrically conductive coating onto the structured base layer.
摘要:
Method for producing electrically conductive, structured or full-area surfaces on a support, in which a structured or full-area base layer onto the support in a first step by using a dispersion, which contains electrically conductive particles in a matrix material, the matrix material is at least partially cured and/or dried in a second step, the electrically conductive particles are exposed in a third step by at least partially breaking the matrix, and a metal layer is formed on the structured or full-area base layer in a fourth step by electroless and/or electrolytic coating.
摘要:
Process for preparing double metal cyanide catalysts of the general formula (I) M2a[M1(CN)rXt]b (I) where M2 is preferably Co(III) or Fe(III), and M1 is preferably Zn(II), X is a group other than cyanide which forms a coordinate bond to M1 and is selected from the group consisting of carbonyl, cyanate, isocyanate, nitrile, thiocyanate and nitrosyl, a, b, r, t are integers which are selected so that the compound is electrically neutral, by reacting a) a cyanometallic acid of the general formula (II) Hw[M1(CN)r(X)t] where M1 and X are as defined above, r and t are as defined above and w is selected so that the compound is electrically neutral, with b) a readily protolyzable metal compound (IIIa) M2Rw and/or (IIIb) M2RuYv, where M2 is as defined above, the groups R are identical or different and are each the anion of a very weak protic acid having a pKa of ≧20, and Y is the anion of an inorganic mineral acid or a moderately strong to strong organic acid having a pKa of from −10 to +10, w corresponds to the valence of M2, u+v corresponds to the valence of M2, with u and v each being at least 1, with the reaction being carried out in a nonaqueous, aprotic solvent.
摘要:
The present invention relates to polymer compositions, to a process for their preparation and to their use for preparing aqueous active compound compositions of water-insoluble active compounds, in particular of active compounds for crop protection.
摘要:
The present invention relates to compositions at least comprising one alkoxylate of the formula RO(A)n(B)mH, to processes for the preparation of such compositions, in particular in the presence of double-metal cyanide compounds as catalyst, and their use as emulsifier, foam regulator or as wetting agents for hard surfaces. Moreover, the present invention also relates to the use of such compositions in detergents and surfactant formulations.