Patents by Inventor Frank-Olaf Mähling

Frank-Olaf Mähling has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20240043768
    Abstract: A method for the preparation of homo- and copolymers of alkyl (meth)acrylates having a low residual monomer content involves preparing a reaction mixture containing monomers, charging the reaction mixture, heating the reaction mixture, adding an additional monomer after initial monomer conversion, and optional further processing of the reaction mixture. The homo- and copolymers of alkyl (meth)acrylates obtained by this method as useful in lubricant applications.
    Type: Application
    Filed: December 17, 2021
    Publication date: February 8, 2024
    Applicant: Evonik Operations GmbH
    Inventors: Frank-Olaf Mähling, Maria Stimeier, Thomas Schimmel, Stefan Karl Maier, Sofia Sirak
  • Publication number: 20230416634
    Abstract: Polyalkyl (meth)acrylates are useful in compressor oils. A method of increasing the energy efficiency of a compressor involves operating the compressor with a compressor oil containing a polyalkyl (meth)acrylate-based viscosity index improver.
    Type: Application
    Filed: November 18, 2021
    Publication date: December 28, 2023
    Applicant: Evonik Operations GmbH
    Inventors: Thomas SCHIMMEL, Frank-Olaf Mähling, Lucas Voigt
  • Publication number: 20220372388
    Abstract: Low molecular weight polyalkyl acrylate polymers can be used as high viscosity base fluids. A corresponding method can be used for their preparation. Lubricant compositions may contain such low molecular weight polyalkyl acrylate polymers and the compositions may be used as automatic transmission fluids, manual transmission fluids, continuously variable transmission fluids, gear oil formulations, industrial gear oil formulations, axle fluid formulations, dual clutch transmission fluids, dedicated hybrid transmission fluids, or hydraulic oils.
    Type: Application
    Filed: December 12, 2019
    Publication date: November 24, 2022
    Applicant: Evonik Operations GmbH
    Inventors: Stefan Karl Maier, Michael Neusius, Qi Xiao, Gabriela Fedor, Stefan Hilf, Frank-Olaf Mähling
  • Patent number: 10703840
    Abstract: A method for the preparation of a copolymer containing at least one alkyl methacrylate and maleic anhydride having a number average molecular weight of 4000 to 18000 g/mol proceeds by solution polymerization in the presence of a radical initiator.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: July 7, 2020
    Assignee: Evonik Operations GmbH
    Inventors: Rhishikesh Gokhale, Sandra Muehling, Miriam Kathrin Stihulka, Klaus Schimossek, Frank-Olaf Maehling
  • Patent number: 10604715
    Abstract: The present application relates to compositions comprising at least one polyalkyl(meth)acrylate polymer, a graft copolymer comprising a copolymer based on ethylene as graft base and one or more polyalkyl(meth)acrylate polymer(s) grafted thereon, and at least one non-grafted ethylene-based copolymer, as well as to the use of such compositions to improve the performance, especially the cold flow properties and injector nozzle coking tendency of middle distillates, especially diesel fuels, biodiesel and blends thereof.
    Type: Grant
    Filed: February 3, 2014
    Date of Patent: March 31, 2020
    Assignee: EVONIK OPERATIONS GmbH
    Inventors: Frank-Olaf Maehling, Ronny Sondjaja, Brian Hess, Julien Couet, Dennis Thong
  • Patent number: 10526558
    Abstract: The use is described of polymers which contain, in copolymerized form, an ?-olefin, a vinyl ester and an ester of an ?,?-unsaturated carboxylic acid as an additive for fuel oils and lubricants and in particular as a cold flow improver in fuel oils. In addition, the fuel oils and lubricants additized with these polymers; and also additive packages comprising such polymers are described.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: January 7, 2020
    Assignee: BASF SE
    Inventors: Wolfgang Ahlers, Andreas Fechtenkoetter, Frank-Olaf Maehling, Irene Troetsch-Schaller, Ansgar Eisenbeis
  • Patent number: 10472444
    Abstract: The present invention relates to a method for the preparation of a sulfur-free copolymer comprising at least one alkyl methacrylate and maleic anhydride having a number average molecular weight of 3000 to 9000 g/mol by solution polymerization in the presence of a radical initiator.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: November 12, 2019
    Assignee: Evonik Oil Additives GmbH
    Inventors: Rhishikesh Gokhale, Sandra Gebhardt, Miriam Kathrin Stihulka, Klaus Schimossek, Frank-Olaf Maehling
  • Patent number: 10465027
    Abstract: A method for the preparation of a sulfur-free copolymer proceeds by solution polymerization in the presence of a radical initiator, wherein the copolymer contains at least one alkyl methacrylate and maleic anhydride having a number average molecular weight of 3000 to 9000 g/mol.
    Type: Grant
    Filed: December 16, 2015
    Date of Patent: November 5, 2019
    Assignee: Evonik Oil Additives GmbH
    Inventors: Rhishikesh Gokhale, Sandra Muehling, Miriam Kathrin Stihulka, Klaus Schimossek, Frank-Olaf Maehling
  • Publication number: 20190300808
    Abstract: A lubricant composition with a comb polymer and a synthetic base oil has improved viscosity characteristics at low operating temperatures. In addition, a comb polymer can be used for producing a lubricant having an R-factor of less than or equal to 8, wherein the R-factor is defined as the ratio of the kinematic viscosity at ?20° C. and the kinematic viscosity at +20° C.
    Type: Application
    Filed: October 27, 2017
    Publication date: October 3, 2019
    Applicant: Evonik Oil Additives GmbH
    Inventors: Ronny Sondjaja, Frank-Olaf Mähling, Michael Alibert, Jennifer Holtzinger, Stefan Karl Maier
  • Patent number: 10428292
    Abstract: Polyalkyl(meth)acrylate (PAMA) polymers comprising a certain amount of hydroxyl-functionalized alkyl (meth)acrylates can be used for improving the demulsibility performance of high VI lubricating oil compositions. The lubricating oil compositions can be those which are based on apolar base oils, especially hydraulic fluid compositions. The polymers can be comprised in certain lubricating oil compositions.
    Type: Grant
    Filed: August 9, 2017
    Date of Patent: October 1, 2019
    Assignee: Evonik Oil Additives GmbH
    Inventors: Stefan Maier, Jürgen Gebhardt, Katrin Schöller, Frank-Olaf Mähling
  • Publication number: 20190203147
    Abstract: Polyalkyl(meth)acrylate (PAMA) polymers comprising a certain amount of hydroxyl-functionalized alkyl (meth)acrylates can be used for improving the demulsibility performance of high VI lubricating oil compositions. The lubricating oil compositions can be those which are based on apolar base oils, especially hydraulic fluid compositions. The polymers can be comprised in certain lubricating oil compositions.
    Type: Application
    Filed: August 9, 2017
    Publication date: July 4, 2019
    Applicant: Evonik Oil Additives GmbH
    Inventors: Stefan MAIER, Jürgen GEBHARDT, Katrin SCHÖLLER, Frank-Olaf MÄHLING
  • Publication number: 20180334631
    Abstract: The use is described of polymers which contain, in copolymerized form, an ?-olefin, a vinyl ester and an ester of an ?,?-unsaturated carboxylic acid as an additive for fuel oils and lubricants and in particular as a cold flow improver in fuel oils. In addition, the fuel oils and lubricants additized with these polymers; and also additive packages comprising such polymers are described.
    Type: Application
    Filed: July 26, 2018
    Publication date: November 22, 2018
    Applicant: BASF SE
    Inventors: Wolfgang Ahlers, Andreas Fechtenkoetter, Frank-Olaf Maehling, Irene Troetsch-Schaller, Ansgar Eisenbeis
  • Publication number: 20180319919
    Abstract: The present invention relates to a method for the preparation of a sulfur-free copolymer comprising at least one alkyl methacrylate and maleic anhydride having a number average molecular weight of 3000 to 9000 g/mol by solution polymerization in the presence of a radical initiator.
    Type: Application
    Filed: July 13, 2018
    Publication date: November 8, 2018
    Applicant: Evonik Oil Additives GmbH
    Inventors: Rhishikesh GOKHALE, Sandra GEBHARDT, Miriam Kathrin Stihulka, Klaus Schimossek, Frank-Olaf Maehling
  • Patent number: 10062471
    Abstract: An additive formulation suitable for antistatic modification and improving the electrical conductivity of inanimate organic material, consisting essentially of (A) from 1 to 50% by weight of an olefin-sulfur dioxide copolymer, (B) from 1 to 50% by weight of a compound which comprises one or more basic nitrogen atoms and has at least one relatively long-chain linear or branched hydrocarbon radical having at least four carbon atoms or an equivalent structural element which ensures the solubility of component (B) in the inanimate organic material, (C) from 0.1 to 30% by weight of an oil-soluble acid and (D) from 1 to 80% by weight of a high-boiling organic solvent which consists of one or more molecule types, where at least 80% by weight of these molecule types have a boiling point of more than 150° C. at standard pressure, where the sum of all components adds up to 100% by weight.
    Type: Grant
    Filed: July 11, 2014
    Date of Patent: August 28, 2018
    Assignee: BASF SE
    Inventors: Dietmar Posselt, Frank-Olaf Maehling, Arno Lange, Anja Vinckier, Claudius Kormann
  • Patent number: 10047314
    Abstract: The use is described of polymers which contain, in copolymerized form, an ?-olefin, a vinyl ester and an ester of an ?,?-unsaturated carboxylic acid as an additive for fuel oils and lubricants and in particular as a cold flow improver in fuel oils. In addition, the fuel oils and lubricants additized with these polymers; and also additive packages comprising such polymers are described.
    Type: Grant
    Filed: February 6, 2017
    Date of Patent: August 14, 2018
    Assignee: BASF SE
    Inventors: Wolfgang Ahlers, Andreas Fechtenkoetter, Frank-Olaf Maehling, Irene Troetsch-Schaller, Ansgar Eisenbeis
  • Patent number: 9957342
    Abstract: The present invention relates to a process for preparing grafted polyalkyl(meth)acrylates (PAMAs) containing dispersant repeating units in the polymer backbone as well as in the grafted layer, which polymers are characterized by a low sulfur content, the products available by this process and their use as an additive to fuels, especially to middle distillates and blends thereof. The present invention further relates to a composition comprising the grafted polyalkyl(meth)acrylates prepared by the process according to the present invention and the use of said composition as an additive component to fuels, especially to middle distillates and blends thereof, and for improving the cold flow properties of fuel oil and fuel oil compositions, especially to middle distillate fuels and blends thereof.
    Type: Grant
    Filed: October 8, 2013
    Date of Patent: May 1, 2018
    Assignee: Evonik Oil Additives GmbH
    Inventors: Justin August Langston, Barbara Voltz, Frank-Olaf Maehling, Michael G Duckworth, Brian Hess, Rhishikesh Gokhale
  • Patent number: 9908955
    Abstract: A copolymer with high chemical homogeneity, consisting of (A) 50 to 30% by weight of ethylene, (B) 50 to 70% by weight of C4- to C24-hydrocarbyl ester of (meth)acrylic acid, (C) 0 to 5% by weight of (meth)acrylic acid and (D) 0 to 10% by weight of copolymerizable monomers, obtainable by polymerizing a mixture of 80 to 60% by weight of ethylene, 20 to 40% by weight of (meth)acrylic acid and 0 to 10% by weight of copolymerizable monomers in a backmixing, continuous polymerization apparatus, and subsequently polymer-analogously esterifying the resulting copolymer with C4- to C24-hydrocarbinols. The inventive copolymer is suitable for improving the cold flow properties of fuel oils, for lowering the lower mixing temperature of cold flow improver additives into fuel oils, and for improving the filterability of fuel oils comprising cold flow improver additives.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: March 6, 2018
    Assignee: BASF SE
    Inventors: Frank-Olaf Maehling, Jan Strittmatter, Irene Troetsch-Schaller, Ivette Garcia-Castro, Michael Schroers, Uwe Rebholz
  • Publication number: 20170369615
    Abstract: A method for the preparation of a sulfur-free copolymer proceeds by solution polymerization in the presence of a radical initiator, wherein the copolymer contains at least one alkyl methacrylate and maleic anhydride having a number average molecular weight of 3000 to 9000 g/mol.
    Type: Application
    Filed: December 16, 2015
    Publication date: December 28, 2017
    Applicant: Evonik Oil Additives GmbH
    Inventors: Rhishikesh GOKHALE, Sandra MUEHLING, Miriam Kathrin STIHULKA, Klaus SCHIMOSSEK, Frank-Olaf MAEHLING
  • Publication number: 20170362360
    Abstract: A method for the preparation of a copolymer containing at least one alkyl methacrylate and maleic anhydride having a number average molecular weight of 4000 to 18000 g/mol proceeds by solution polymerization in the presence of a radical initiator.
    Type: Application
    Filed: December 16, 2015
    Publication date: December 21, 2017
    Applicant: Evonik Oil Additives GmbH
    Inventors: Rhishikesh GOKHALE, Sandra MUEHLING, Miriam Kathrin STIHULKA, Klaus SCHIMOSSEK, Frank-Olaf MAEHLING
  • Publication number: 20170218295
    Abstract: The present invention relates to the use of hydraulic fluids in plastic injection molding processes. Thereby it was surprisingly found that the use of hydraulic fluids with the right combination of physical parameters like the viscosity grade, the viscosity index, the density and the dispersancy allows for significant energy savings in plastic injection molding processes (PIM). The PIM process is an industrial process to manufacture plastic parts at well controlled temperatures, pressures and cycle times. The energy consumption of the process became more important over the last years, however, other parameters like process stability and accuracy of plastic part parameters as well as machine protection and long oil drain intervals have to be satisfying.
    Type: Application
    Filed: August 7, 2015
    Publication date: August 3, 2017
    Applicant: Evonik Oil Additives GmbH
    Inventors: Frank Lauterwasser, Frank-Olaf Mähling, Robert Kolb, Thorsten Bartels, Thomas Schimmel, Stefan Maier, Michael Alibert