Abstract: To improve energy efficiency of prior art processes while preserving the standards of quality and total yield of desired end products, a process for the preparation of phenolic compounds is proposed.

Abstract: The invention relates to a method for controlling a transmission ratio (r) of a continuously adjustable transmission (3). An accelerator pedal position and an actual driving speed (VUactual) are acquired. By consideration of the actual driving speed (Vactual) and the accelerator pedal position (?Pedal), a transmission gradient is determined. A target transmission ratio is determined as the sum of an actual transmission ratio (ractual) and a transmission adjustment value (formula I), and the continuously adjustable transmission (3) is set to this ratio.

Abstract: A device for sensing a direction of rotation of a hand tool having an electric motor, has a rotatably supported brush plate provided in the electric motor and located in different positions depending on a direction of rotation of the electric motor; and at least one sensor which senses the different positions of said brush plate to determine a direction of rotation, wherein said sensor is configured as a contactless sensor.

Abstract: A switching cabinet with a switching cabinet housing delimited at a top by an upper cover plate and having at least one switching cabinet door on a front surface. A plurality of transport eyes are attached to the top of the switching cabinet housing that can be covered by a detachably fastenable roof. The transport eyes include angle elements that each have one leg which protrudes from the upper cover plate and that has a through bore, and one fastening leg oriented at an angle. The fastening legs of at least a portion of the angle elements each have a fastening region with which they are attached to the top of the switching cabinet housing and a holding region with which they engage behind an edge profile formed onto the roof.

Abstract: The present invention relates to a continuous method for treating a crude phenol stream comprising methylbenzofuran and hydroxyacetone by passing the crude phenol stream through at least two reactors connected in series the reactors containing an acidic ion exchange resin, whereby the temperature in successive reactors decreases in flow direction of the phenol stream so that the temperature in the first reactor in flow direction of the phenol stream is between 100° C. and 200° C. and the temperature in the last reactor in flow direction of the phenol stream is between 50° C. and 90° C. without a thermal separation step between any of two successive reactors and to the use of this method in a process for making phenol.

Abstract: The present invention relates to a process for the production of iso-propanol by liquid phase hydrogenation of acetone to iso-propanol in at least two hydrogenation reaction stages, each reaction stage comprising a hydrogenation reaction zone, wherein the hydrogenation reaction product leaving the reaction zone of the first reaction stage contains unreacted acetone and a product stream comprising acetone and iso-propanol is transferred to the reaction zone of a subsequent reaction stage said product stream having at the inlet to the reaction zone of said subsequent reaction stage a temperature of 60 to 100° C., wherein the temperature of the product stream leaving the reaction zone of said subsequent reaction stage at the outlet from said reaction zone is at most 40° C. higher than the temperature of the product stream entering said reaction zone at the inlet to said reaction zone and the temperature in said subsequent reaction zone does not exceed 125° C.

Abstract: The invention relates to a support arrangement for an inner module in an outer module, particularly for an inner vibrating frame in an outer frame of an outer housing, with a damping device between the inner and outer modules for absorbing forces acting in up to three coordinate directions relative to the inner and outer modules. The damping device is essentially constructed as an elastic polymer profile, particularly two polymer profiles, running round between the inner and outer modules and that the inner and outer modules are constructed with a bearing device for the elastic polymer profile or profiles.

Abstract: The present invention provides a continuous process for recovering acetone from a waste stream from an acetone purification stage. The waste stream contains mesityl oxide and optionally acetone. The process for recovering acetone includes separating the waste stream in a separating device at least in one stream containing mesityl oxide and optionally a further stream containing acetone, then concentrating mesityl oxide in the mesityl oxide containing stream, and finally recycling the concentrated mesityl oxide stream to the separating device and bringing it into contact with a basic or acidic aqueous medium or with an acidic catalyst in the presence of water whereby mesityl oxide is at least partially hydrolyzed to acetone.

Abstract: The invention relates to a power tool having a change-speed gear device comprising a plurality of gears (1, 2) for adjusting on demand power stages of a drive, wherein an overload protection can be coupled to the gears (1, 2). According to the invention, the device comprises at least one gear (3) in which the overload protection function can be forcibly deactivated. The invention also relates to an overload protection.

Abstract: The invention relates to a suction system of an electric machine tool, comprising a housing (12), a pot part (20) of the housing (12), and a transmission chamber (13), with a suction device (10) for receiving air that is contaminated with drilled material, and a suction duct (11) for sucking off the air. The suction device (10) can be connected to the electric machine tool via a joining element (15) while the suction duct (11) is disposed at least in part inside the housing (12) of the electric machine tool. The invention further relates to an electric machine tool comprising a suction system.

Abstract: A process for preparing formaldehyde by gas-phase oxidation of methanol vapor by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst comprising iron and molybdenum, wherein the process is carried out in a reactor (1) having heat-exchange plates (2) which are arranged in the longitudinal direction of the reactor (1) and have a spacing between them and through which a heat transfer medium flows, inlet and outlet facilities (3, 4) for the heat transfer medium to the heat-exchange plates (2) and also gaps (5) between heat-exchange plates (2) in which the fixed-bed catalyst is present and into which the methanol vapor and the gas stream comprising molecular oxygen are passed, is described.

Abstract: A system and method are disclosed for reliable communications in a packet network. A system that incorporates teachings of the present disclosure may include, for example, a network management system (NMS) having a controller programmed to establish between first and second customer edge (CE) routers in a full mesh packet network first and second logical data tunnels conforming to an isolation protocol, synchronize packet data in the first and second logical data tunnels, enable packet data exchanges between the first and second CE routers over the first logical data tunnel, direct the first and second CE routers to duplicate the packet data exchanged between them over the second logical data tunnel, and direct the first and second CE routers to synchronously switch to the second logical data tunnel upon detecting a fault in the first logical data tunnel.

Abstract: A dial tone generator outputs a particular dial tone to a party to indicate that a call block feature is enabled for the party. The call block feature is disabled for the party in response to a number of incoming calls for the party being greater than or equal to a threshold.

Abstract: The present invention relates to a continuous method for treating a crude phenol stream comprising methylbenzofuran and hydroxyacetone by passing the crude phenol stream through at least two reactors connected in series the reactors containing an acidic ion exchange resin, whereby the temperature in successive reactors decreases in flow direction of the phenol stream so that the temperature in the first reactor in flow direction of the phenol stream is between 100° C. and 200° C. and the temperature in the last reactor in flow direction of the phenol stream is between 50° C. and 90° C. without a thermal separation step between any of two successive reactors and to the use of this method in a process for making phenol.

Abstract: The present invention relates to method for producing phenol which includes: a) oxidizing cumene to form an oxidation product containing cumene hydroperoxide; b) cleaving the oxidation product using an acidic catalyst to form a cleavage product containing phenol, acetone and impurities; c) neutralizing and washing the cleavage product with a basic aqueous medium to obtain a neutralized cleavage product; d) separating the neutralized cleavage product by at least one distillation step into at least a phenol containing fraction and an aqueous fraction comprising hydroxyacetone; e) treating the aqueous fraction with an oxidizing agent in presence of a base to obtain a basic aqueous medium reduced in hydroxyacetone; f) recycling at least a portion of the basic aqueous medium to the neutralizing and washing step c); and g) recovering phenol from the phenol containing fraction obtained in step d).

Abstract: Unsupervised learning of object category from images is carried out by using an automatic image recognition system. A plurality of training images are automatically analyzed using an interest operator which produces an indication of features. Those features are clustered using a vector guantizer. The model is learned from the features using expectation maximization to assess a joint probability of which features are most relevant.

Abstract: An electric power tool has a plurality of separable housing parts including at least two shell elements oriented toward one another of a housing and one cup element of a housing, and the housing parts include one housing part of the cup element which at least partly embraces one housing part of the shell element from outside.

Abstract: A device for sensing a direction of rotation of a hand tool having an electric motor, has a rotatably supported brush plate provided in the electric motor and located in different positions depending on a direction of rotation of the electric motor; and at least one sensor which senses the different positions of said brush plate to determine a direction of rotation, wherein said sensor is configured as a contactless sensor.

Abstract: The present invention relates to a process for preparing sulfur-containing compounds of the general formula I in which Q, R1 and R2 are each independently defined as follows: Q: —S— or —S—S—, R1: hydrogen or saturated or unsaturated, linear or branched C1-C30-alkyl radical, R2: hydrogen or saturated or unsaturated, linear or branched C1-C30-alkyl radical, where R1 and R2 are not simultaneously hydrogen, by reacting a mixed gas stream comprising hydrogen sulfide, with or without oxygen, with linear or branched C1-C30-olefins, which comprises carrying out the reaction in the presence of water and carbon dioxide at a pressure of from 2 to 325 bar.

Abstract: A process for preparing formaldehyde by gas-phase oxidation of methanol vapor by means of a gas stream comprising molecular oxygen in the presence of a fixed-bed catalyst comprising iron and molybdenum, wherein the process is carried out in a reactor (1) having heat-exchange plates (2) which are arranged in the longitudinal direction of the reactor (1) and have a spacing between them and through which a heat transfer medium flows, inlet and outlet facilities (3, 4) for the heat transfer medium to the heat-exchange plates (2) and also gaps (5) between heat-exchange plates (2) in which the fixed-bed catalyst is present and into which the methanol vapor and the gas stream comprising molecular oxygen are passed, is described.