[Wolfgang Gottmann, Michael Kirchberger] DE,,Stamsried;DE,,Neutraubling; The invention relates to a circuit arrangement and a switching module, in which an attenuator is, for EMV suppression of a DC motor, connected to the lines of the DC motor. The attenuator comprises a ferrite, particularly a common mode ferrite.

[KNEBEL JOACHIM, RALF MERBACH, PROTZMANN GUIDO, GOTTMANN KLAUS DR, JOHN HIRSH, SCHMIDT GEROLD, TESSMER DIETER, WILHELM KARNBROCK, KLESSE WOLFGANG, VOLKER KERSCHER] To provide a manufacturing method of (meth)acrylate, the (meth)acrylate manufactured by the method, use thereof for manufacturing high molecular weight homopolymer or copolymer.SOLUTION: There is provided use of (meth)acrylate of the formula (I):CH=C(R)CO-O-R(I) manufactured by reacting (meth)acrylate of the formula (II) and alcohol of the formula (III) in presence of a catalyst and a phenolic polymerization inhibitor, wherein the reaction is initiated by injecting oxygen or oxygen-containing gas mixture with ratio total oxygen input amount of 1.0 L/kg or less, which is measured with liter of oxygen per 1 kg of the (meth)acrylate of the formula (I) and volume of introduced oxygen is calculated at a temperature of 25°C and a pressure of 101325 Pa, into a reaction mixture, for manufacturing method of a high molecular weight polymer.SELECTED DRAWING: None

[KNEBEL, Joachim, MERBACH, Ralf, PROTZMANN, Guido, GOTTMANN, Klaus, HIRSH, John, SCHMITT, Gerold, TESSMER, Dieter, KARNBROCK, Wilhelm, KLESSE, Wolfgang, KERSCHER, Volker] {Dg-ipm-pat Postcode 84/339 Rodenbacher Chaussee 4 63457 Hanau;DE(DE)(DE)}{Alsbacher Str. 11 64665 Alsbach-hähnlein;DE(DE)(DE)}{Martinstr. 26 64572 Buettelborn;DE(DE)(DE)}{Ludwigstrasse 13 64625 Bensheim;DE(DE)(DE)}{Neissestr. 18 64646 Heppenheim;DE(DE)(DE)}{7231 Forest Park Fairhope, Alabama 36532;US(US)(US)}{Rotäckerstr. 82 63743 Aschaffenburg;DE(DE)(DE)}{Max-Ratschow-Weg 20 64297 Darmstadt;DE(DE)(DE)}{Bleichstrasse 3 64625 Bensheim;DE(DE)(DE)}{Tucholskyweg 26 55127 Mainz;DE(DE)(DE)}{Bonhoeffer Strasse 12 64354 Reinheim;DE(DE)(DE)} Process for preparing (meth )acrylates of the formula (I) CH2 = C(R1)CO-O-R2 (I) in which R1 is hydrogen or methyl and R2 is a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C6-C14) -aryl- (C1-C8) -alkyl radical; by reacting a (meth) acrylate of the formula (II) CH2 = C(R1)-CO-OR3 (II) with an alcohol of the formula (III) HO-R2 (III) in the presence of an amount of a suitable catalyst which catalyses the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization; the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in that the specific total oxygen input is less than or equal to 1.0 l/kg, measured in litres of oxygen per kilogram of (meth) acrylate of the formula (I), where the volume of oxygen introduced is calculated at a temperature of 25°C and a pressure of 101 325 pascal. The resulting (meth) acrylates can surprisingly be processed to particularly high molecular weight emulsion polymers which are, for example, outstandingly suitable for use as flow resistance reducers in mineral oil extraction.

[KARNBROCK WILHELM, KNEBEL JOACHIM, MERBACH RALF, PROTZMANN GUIDO, GOTTMANN KLAUS, HIRSH JOHN, SCHMITT GEROLD, TESSMER DIETER, KLESSE WOLFGANG, KERSCHER VOLKER] DE Process for preparing (meth)acrylates of the formula (I) CH2=C(R1)-CO-O-R2 (I) in which R1 is hydrogen or methyl and R2 is a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C6-C14)-aryl-(C1-C8)-alkyl radical; by reacting a (meth)acrylate of the formula II CH2=C(R1)-CO-OR3 (II) with an alcohol of the formula (III) HO-R2 (III) in the presence of an amount of a suitable catalyst which catalyses the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization; the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in that the specific total oxygen input is less than or equal to 1.0 l/kg, measured in litres of oxygen per kilogram of (meth)acrylate of the formula (I), where the volume of oxygen introduced is calculated at a temperature of 25 DEG C and a pressure of 101 325 pascal. The resulting (meth)acrylates can surprisingly be processed to particularly high molecular weight emulsion polymers which are, for example, outstandingly suitable for use as flow resistance reducers in mineral oil extraction.

[KNEBEL, Joachim, MERBACH, Ralf, PROTZMANN, Guido, GOTTMANN, Klaus, HIRSH, John, SCHMITT, Gerold, TESSMER, Dieter, KARNBROCK, Wilhelm, KLESSE, Wolfgang, KERSCHER, Volker] DE,64293 Darmstadt,Kirschenallee;

[Joachim Knebel, Ralf Merbach, Guido Protzmann, Klaus Gottmann, John Hirsh, Gerold Schmitt, Dieter Tessmer, Wilhelm Karnbrock, Wolfgang Klesse, Volker Kerscher] DE,,Alsbach-Haehnlein;DE,,Buettelborn;DE,,Bensheim;DE,,Heppenheim;US,AL,Fairhope;DE,,Aschaffenburg;DE,,Darmstadt;DE,,Bensheim;DE,,Mainz;DE,,Reinheim; Process for preparing (meth)acrylates of the formula (I) CH2═C(R1)—CO—O—R2  (I) in which R1 is hydrogen or methyl and R2 is a saturated or unsaturated, linear or branched, aliphatic or cyclic alkyl radical having 6 to 22 carbon atoms, or a (C6-C14)-aryl-(C1-C8)-alkyl radical; by reacting a (meth)acrylate of the formula II CH2═C(R1)—CO—OR3  (II) with an alcohol of the formula (III) HO—R2  (III) in the presence of an amount of a suitable catalyst which catalyzes the reaction and of an amount of a phenolic polymerization inhibitor or a combination of two or more phenolic polymerization inhibitors which is sufficient to inhibit undesired polymerization; the reaction being undertaken with input or introduction into the reaction mixture resulting from the reaction of an amount of oxygen or of an oxygenous gas mixture sufficient to inhibit undesired polymerization, and the process is characterized in that the specific total oxygen input is less than or equal to 1.0 l/kg, measured in liters of oxygen per kilogram of (meth)acrylate of the formula (I), where the volume of oxygen introduced is calculated at a temperature of 25° C. and a pressure of 101 325 pascal. The resulting (meth)acrylates can surprisingly be processed to particularly high molecular weight emulsion polymers which are, for example, outstandingly suitable for use as flow resistance reducers in mineral oil extraction.

[SCHMITT MANFRED, GOTTMANN HOLGER, BALZER WOLFGANG R DR, SCHIEMANN HARTMUT DR]

[KARNBROCK WILHELM, KNEBEL JOACHIM, MERBACH RALF, PROTZMANN GUIDO, GOTTMANN KLAUS, HIRSH JOHN, SCHMITT GEROLD, TESSMER DIETER, KLESSE WOLFGANG, KERSCHER VOLKER] DE

[KNEBEL JOACHIM, RALF MERBACH, PROTZMANN GUIDO, GOTTMANN KLAUS DR, JOHN HIRSH, SCHMIDT GEROLD, TESSMER DIETER, WILHELM KARNBROCK, KLESSE WOLFGANG, VOLKER KERSCHER] PROBLEM TO BE SOLVED: To provide a manufacturing method of (meth)acrylate, the (meth)acrylate manufactured by the method, use thereof for manufacturing high molecular weight homopolymer or copolymer.SOLUTION: There is provided use of (meth)acrylate of the formula (I):CH=C(R)CO-O-R(I) manufactured by reacting (meth)acrylate of the formula (II) and alcohol of the formula (III) in presence of a catalyst and a phenolic polymerization inhibitor, wherein the reaction is initiated by injecting oxygen or oxygen-containing gas mixture with ratio total oxygen input amount of 1.0 L/kg or less, which is measured with liter of oxygen per 1 kg of the (meth)acrylate of the formula (I) and volume of introduced oxygen is calculated at a temperature of 25°C and a pressure of 101325 Pa, into a reaction mixture, for manufacturing method of a high molecular weight polymer.SELECTED DRAWING: None

[Schmitt Manfred(Heppenheim,DEX), Gottmann Holger(Brensbach-Wersau,DEX), Balzer Wolfgang R.(Alsbach,DEX), Schiemann Hartmut(Hunfeld,DEX)] The creamy bleaching agent suspension is mixed with an oxidizing agent prior to applying it to the hair to form a composition for bleaching or decolorizing hair. This creamy bleaching agent suspension contains less than 2.5% by weight water and a mixture of at least one inorganic persalt, at least one alkaline reacting salt, from 0.5 to 20 percent by weight of a thickening substance, which consists essentially of an acrylic acid polymer and one or more cellulose, alginate and/or polysaccharide polymers, and from 26.5 to 35 percent by weight of at least one oil or wax, and, as needed, one or more cosmetic additive ingredient. From 0.1 to 3 percent by weight of the acrylic acid polymer must be present in the composition.