Patents Assigned to Rohmax Additives GmbH
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Patent number: 7553673Abstract: The present invention describes use of use of a metal compound to control the quality of a functional fluid. Additionally, the present invention concerns a method for controlling the quality of a functional fluid comprising the steps of: adding a metal compound to a component of a lubricant; mixing the component with a base oil; measuring the concentration of the metal compound in the functional fluid; and comparing the expected concentration of the metal compound with the measured concentration.Type: GrantFiled: November 13, 2006Date of Patent: June 30, 2009Assignee: RohMax Additives GmbHInventors: Bernard Kinker, Jen-Lung Wang, Joan Souchik
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Publication number: 20090064568Abstract: The present invention relates to motor fuel compositions comprising at least one diesel fuel of mineral origin and at least one biodiesel fuel, characterized in that the fuel composition contains at least 20% by weight of diesel fuel of mineral origin and 0.05% to 5% by weight of at least one polymer which comprises ester groups and contains repeating units that are derived from ester monomers having 16 to 40 carbon atoms in the alcohol radical, and repeating units that are derived from ester monomers having 7 to 15 carbon atoms in the alcohol radical. The present invention further describes the use of polymers comprising ester groups as flow improvers, and also a process for operating a diesel engine.Type: ApplicationFiled: February 13, 2007Publication date: March 12, 2009Applicant: EVONIK ROHMAX ADDITIVES GMBHInventors: Torsten Stohr, Jurgen Schnabel, Dieter Janssen, Michael Muller
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Publication number: 20090048406Abstract: A continuously variable composition copolymer is prepared in a reaction system, by (a) providing a reaction vessel comprising a first monomer composition; (b) providing a feed vessel comprising a second monomer composition; (c) initiating a polymerization reaction in the reaction vessel; (d) continuing the polymerization reaction during the gradual addition of the second monomer composition from the feed vessel to the reaction vessel, wherein the gradual addition of the second monomer composition is performed such that the continuously variable composition copolymer is obtained; (e) maintaining the polymerization until at least 90% of the total monomer composition has been converted to the copolymer; wherein the copolymer has a weight average molecular weight from 10,000 to 1,000,000; wherein the copolymer is soluble in lubricating oil, wherein the monomers of the first monomer composition provided in the reaction vessel comprise at least 50% by weight of all the monomers used to prepare the copolymer.Type: ApplicationFiled: July 14, 2008Publication date: February 19, 2009Applicant: EVONIK ROHMAX ADDITIVES GMBHInventors: Nadine Iroff, Peter Moore
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Patent number: 7470381Abstract: The present invention concerns a functional fluid comprising A) 1 to 99% by weight based on the total weight of the functional fluid of alkyl(meth)acrylate polymers obtainable by polymerizing a mixture of olefinically unsaturated monomers and B) 1 to 99% by weight based on the total weight of the functional fluid of an oxygen containing compound selected from to group of organophosphorus compounds, carboxylic acid esters and/or polyether polyols.Type: GrantFiled: July 25, 2003Date of Patent: December 30, 2008Assignee: RohMax Additives GmbHInventors: Douglas G. Placek, Bernhard G. Kinker, David J. Cooper, Jr., Robert P. Simko
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Publication number: 20080313074Abstract: A system, model and method for commercializing a consumable product used in capital equipment by selling the consumable product in a first sale directly to a builder of capital equipment integrally with the sale of the capital equipment at a first price then making a second sale of the consumable product through a different sales path at a second price to a purchaser and/or operator of the capital equipment such that the second sale at the second price is sufficient to cover the development costs of the consumable product and generate a profit for a supplier of the consumable product.Type: ApplicationFiled: June 12, 2007Publication date: December 18, 2008Applicant: ROHMAX ADDITIVES GMBHInventor: Douglas G. PLACEK
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Publication number: 20080302422Abstract: The power output of a hydraulic system is improved by operating the hydraulic system with a hydraulic fluid having a VI of at least 130.Type: ApplicationFiled: June 7, 2007Publication date: December 11, 2008Applicant: ROHMAX ADDITIVES GMBHInventors: Christian Daniel Georges NEVEU, Douglas G. Placek, Steven Neil Herzog
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Patent number: 7452932Abstract: The present invention relates to a polymer dispersion having high stability, comprising A) at least one dispersed polyolefin, B) at least one dispersing component, C) mineral oil and D) at least one compound comprising (oligo)oxyalkyl groups.Type: GrantFiled: August 27, 2003Date of Patent: November 18, 2008Assignee: RohMax Additives GmbHInventors: Markus Scherer, Alexander Dardin, Wolfgang Tschepat, Stephan Massoth
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Patent number: 7429555Abstract: The present invention relates to lubricating greases comprising at least one thickening agent and at least one lubricating oil, wherein the lubricating grease contains at least one polymeric structure improver that can be obtained by polymerization of monomer compositions, which are composed of a) 0 to 40 wt %, relative to the weight of the monomer compositions for synthesis of the polymeric structure improvers, of at least one (meth)acrylate of formula (I) in which R represents hydrogen or methyl, R1 denotes a straight-chain or branched alkyl moiety having 1 to 5 carbon atoms, b) 40 to 99.99 wt %, relative to the weight of the monomer compositions for synthesis of the polymeric structure improvers, of at least one (meth)acrylate of formula (II) in which R represents hydrogen or methyl, R2 denotes a straight-chain or branched alkyl moiety having 6 to 30 carbon atoms, c) 0.Type: GrantFiled: April 30, 2004Date of Patent: September 30, 2008Assignee: Rohmax Additives GmbHInventors: Markus Scherer, Matthias Fischer, Michael Mueller, Bernard Kinker, Alexandra Pauker
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Publication number: 20080194443Abstract: The invention relates to comb polymers which comprise, in the main chain, repeating units which are derived from polyolefin-based macromonomers, and repeating units which are derived from low molecular monomers which are selected from the group consisting of styrene monomers having 8-17 carbon atoms, alkyl(meth)acrylates having 1-10 carbon atoms in the alcohol group, vinyl esters having 1-11 carbon atoms in the acyl group, vinyl ethers having 1-10 carbon atoms in the alcohol group, (Di)alkylfumarates having 1-10 carbon atoms in the alcohol group, (Di)alkylmaleates having 1-10 carbon atoms in the alcohol group and mixtures of said monomers. The molar branching degree lies in the region between 0.1-10 mol. % and the comb polymer represents the sum of at least 80 wt.Type: ApplicationFiled: April 7, 2006Publication date: August 14, 2008Applicant: ROHMAX ADDITIVES GMBHInventors: Torsten Stohr, Boris Eisenberg, Michael Muller
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Publication number: 20080146475Abstract: (EN) The present invention relates to copolymers obtainable by polymerizing a monomer composition composed of a) 0% to 40% by weight of one or more ethylenically unsaturated ester compounds of the formula (I) in which R is hydrogen or methyl, R1 is a linear or branched alkyl radical having 1 to 5 carbon atoms, R2 and R3 independently are hydrogen or a group of the formula —COOR?, in which R1 is hydrogen or an alkyl group having 1 to 5 carbon atoms, b) 10% to 99.Type: ApplicationFiled: April 4, 2006Publication date: June 19, 2008Applicant: ROHMAX ADDITIVES GMBHInventors: Michael Mueller, Torsten Stohr, Boris Eisenberg
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Publication number: 20080132663Abstract: The invention relates to a method for radical polymerization of one or several ethylenically unsaturated compounds, characterized in that it consists in providing at least 80.8 percent by weight ethylenically unsaturated compounds in relation to the total weight of the ethylenically unsaturated compounds, adding at least one polymerization initiator for radical polymerization in at least two steps, wherein more polymerization initiator is added in the second step than in the first.Type: ApplicationFiled: August 1, 2005Publication date: June 5, 2008Applicant: Rohmax Additives GMBHInventors: Francois Acker, Markus Scherer, Alexander Dardin, Stephan Massoth, Bernd Amrhein, Detlef Bloos, Valerie Dittgen, Alain Roos, Jean-Marc Beiner
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Publication number: 20080113886Abstract: The present invention describes use of use of a metal compound to control the quality of a functional fluid. Additionally, the present invention concerns a method for controlling the quality of a functional fluid comprising the steps of: adding a metal compound to a component of a lubricant; mixing the component with a base oil; measuring the concentration of the metal compound in the functional fluid; and comparing the expected concentration of the metal compound with the measured concentration.Type: ApplicationFiled: November 13, 2006Publication date: May 15, 2008Applicant: ROHMAX ADDITIVES GMBHInventors: Bernard KINKER, Jen-Lung Wang, Joan Souchik
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Publication number: 20080090296Abstract: The present invention concerns a method for the determination of the oxidative stability of a lubricating fluid, comprising the steps of: introducing a sample of the lubricating fluid under test in an reaction cell; introducing catalytic amounts of a catalyst to the reaction cell; heating the cell to the oxidation temperature of the lubricating fluid and maintaining this temperature; delivering oxygen containing gas at constant flow rate through the cell over the course of the reaction; delivering a gas comprising nitrogen dioxide at a constant flow rate through the cell for a specified time; applying and maintaining a specified vacuum on the reaction cell; allowing the mixture to react for a specified time; measuring the viscosity of the oxidized lubricating fluid. Additionally, the present invention describes an apparatus for the determination of the oxidative stability of a lubricating fluid.Type: ApplicationFiled: October 11, 2006Publication date: April 17, 2008Applicant: ROHMAX ADDITIVES GMBHInventors: Bernard Kinker, Raymond Romaszewski
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Publication number: 20070219101Abstract: (EN) The invention relates to the use of polyalkyl ester for reducing the temperature in a lubricating oil composition. The polyalkyl ester has a specific viscosity $g(h)sp/c of between 5 and 30 ml/g, measured in chloroform at 25° C.Type: ApplicationFiled: February 24, 2005Publication date: September 20, 2007Applicant: ROHMAX ADDITIVES GMBHInventors: Markus Scherer, Klaus Hedrich, Michael Alibert, Michael Muller, Roland Schweder
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Publication number: 20070213237Abstract: The invention relates to the use of graft polymers obtained by polymerization in two stages.Type: ApplicationFiled: June 23, 2005Publication date: September 13, 2007Applicant: ROHMAX ADDITIVES GMBHInventors: Markus Scherer, Klaus Hedrich, Alexander Dardin, Michael Muller, Thorsten Stoehr, Boris Eisenberg
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Publication number: 20070197410Abstract: The present invention describes use of a fluid having a VI of at least 130 to improve the energy efficiency of a hydraulic system. Furthermore, the present invention relates to a hydraulic system comprising a hydraulic fluid having a VI of at least 130, a unit for creating mechanical power, a unit that converts mechanical power into hydraulic energy, and a unit that converts hydraulic energy into mechanical work. Preferentially, engine speed can be reduced to decrease load and stress while delivering the same amount of hydraulic power.Type: ApplicationFiled: February 21, 2006Publication date: August 23, 2007Applicant: ROHMAX ADDITIVES GMBHInventors: Douglas G. Placek, Christian Daniel Georges Neveu, Steven Neil Herzog
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Publication number: 20070191238Abstract: The present invention relates to a process for producing lubricating grease by adding a polymeric structure improver in a composition liquid at 25° C. to the dispersion to a dispersion which has grease structure and comprises at least one thickener and at least one lubricating oil.Type: ApplicationFiled: February 24, 2005Publication date: August 16, 2007Applicant: ROHMAX ADDITIVES GMBHInventors: Matthias Fischer, Markus Scherer, Michael Muller
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Publication number: 20070184993Abstract: The invention relates to graft copolymers produced by radically polymerizing polymerisable monomers and, in addition comprising long-chain ethylenically unsaturated compounds which contain alkyl substitutes, in particular acrylates or methacrylates and monomers with hydrogen bridge donator functions. According to said invention, said hydrogen bridge donator monomer is introduced into a polymer backbone and into graft side branches. The inventive polymers are particularly usable for lubricating oil formulations.Type: ApplicationFiled: February 24, 2005Publication date: August 9, 2007Applicant: ROHMAX ADDITIVES GMBHInventors: Markus Scherer, Klaus Hedrich, Wolfgang Tschepat
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Patent number: 7250458Abstract: The present invention relates to a stable polymer dispersion comprising A) at least one dispersed polyolefin, B) at least one dispersing component, C) at least one ester and D) at least one ether comprising (oligo)oxyalkyl groups, the weight ratio of ester C) to ether D) being in the range from 30:1 to 1:30.Type: GrantFiled: August 27, 2003Date of Patent: July 31, 2007Assignee: RohMax Additives GmbHInventors: Markus Scherer, Wolfang Tschepat
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Publication number: 20060240999Abstract: The present invention relates to the use of a polyalkylmethacrylate polymer to improve the air release of a functional fluid.Type: ApplicationFiled: April 22, 2005Publication date: October 26, 2006Applicant: ROHMAX ADDITIVES GMBHInventors: Douglas Placek, Christian Neveu, Roland Schweder, Robert Simko, Charles Hyndman