Patents Assigned to Evonik Oil Additives GmbH
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Publication number: 20190382681Abstract: The invention is related to a composition for use in hydraulic systems of an aircraft. The composition typically comprises an adipic acid-based polyester in a phosphate ester base stock substantially consisting of trialkyl phosphates.Type: ApplicationFiled: December 12, 2017Publication date: December 19, 2019Applicant: Evonik Oil Additives GmbHInventors: Stefan Karl Maier, Nicolai Kolb, Michael Neusius
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Publication number: 20190367836Abstract: Selected comb polymers contain specified amounts of macromonomer and nitrogen-containing (meth)acrylates. Lubricant compositions can contain such comb polymers. The selected comb polymers can be used as solubilizers in lubricant compositions, especially in engine oil (EO) compositions.Type: ApplicationFiled: December 15, 2017Publication date: December 5, 2019Applicant: Evonik Oil Additives GmbHInventors: Tsuyoshi YUKI, Yasuo Arai, Tomohiro Matsuda, Nobuhiro Kishida
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Patent number: 10472444Abstract: 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: GrantFiled: July 13, 2018Date of Patent: November 12, 2019Assignee: Evonik Oil Additives GmbHInventors: Rhishikesh Gokhale, Sandra Gebhardt, Miriam Kathrin Stihulka, Klaus Schimossek, Frank-Olaf Maehling
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Patent number: 10465027Abstract: 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: GrantFiled: December 16, 2015Date of Patent: November 5, 2019Assignee: Evonik Oil Additives GmbHInventors: Rhishikesh Gokhale, Sandra Muehling, Miriam Kathrin Stihulka, Klaus Schimossek, Frank-Olaf Maehling
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Publication number: 20190300808Abstract: 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: ApplicationFiled: October 27, 2017Publication date: October 3, 2019Applicant: Evonik Oil Additives GmbHInventors: Ronny Sondjaja, Frank-Olaf Mähling, Michael Alibert, Jennifer Holtzinger, Stefan Karl Maier
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Patent number: 10428292Abstract: 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: GrantFiled: August 9, 2017Date of Patent: October 1, 2019Assignee: Evonik Oil Additives GmbHInventors: Stefan Maier, Jürgen Gebhardt, Katrin Schöller, Frank-Olaf Mähling
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Publication number: 20190264127Abstract: The invention relates to polymeric-inorganic nanoparticles and preparation processes thereof. The invention also relates to a powder, concentrate and lubricating composition comprising these polymeric-inorganic nanoparticles, to a method of dispersing nanoparticles in lubricating oil, as well as the use of these polymeric-inorganic particles in an oil lubricant formulation to reduce pour point, friction and wear.Type: ApplicationFiled: July 24, 2017Publication date: August 29, 2019Applicant: Evonik Oil Additives GmbHInventors: Sofia SIRAK, Can Metehan TURHAN, Daniel NEß, Jennifer HOLTZINGER, Maximilian CORNELIUS
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Patent number: 10385288Abstract: A graft copolymer can include, in its backbone, at least one segment having repeating units obtainable by ring-opening metathesis polymerization (ROMP) of an optionally substituted cycloalkene, and at least one segment comprising repeating units obtainable by atom transfer radical polymerization (ATRP) of a (meth)acrylate. The corresponding graft copolymer is highly suitable for use as an oil additive in internal combustion engines, in particular, in combustion engines which are operated for longer periods of time at substantially constant operating temperatures.Type: GrantFiled: May 11, 2017Date of Patent: August 20, 2019Assignees: Evonik Oil Additives GmbH, Regents of the University of MinnesotaInventors: Klaus Schimossek, Katrin Schoeller, Mohammad T. Savoji, Marc A. Hillmyer, Timothy P. Lodge
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Publication number: 20190233757Abstract: A graft copolymer can include, in its backbone, at least one segment having repeating units obtainable by ring-opening metathesis polymerization (ROMP) of an optionally substituted cycloalkene, and at least one segment comprising repeating units obtainable by atom transfer radical polymerization (ATRP) of a (meth)acrylate. The corresponding graft copolymer is highly suitable for use as an oil additive in internal combustion engines, in particular, in combustion engines which are operated for longer periods of time at substantially constant operating temperatures.Type: ApplicationFiled: May 11, 2017Publication date: August 1, 2019Applicants: Evonik Oil Additives GmbH, Regents of the University of MinnesotaInventors: Klaus SCHIMOSSEK, Katrin SCHOELLER, Mohammad T. SAVOJI, Marc A. HILLMYER, Timothy P. LODGE
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Publication number: 20190203147Abstract: 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: ApplicationFiled: August 9, 2017Publication date: July 4, 2019Applicant: Evonik Oil Additives GmbHInventors: Stefan MAIER, Jürgen GEBHARDT, Katrin SCHÖLLER, Frank-Olaf MÄHLING
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Publication number: 20190203148Abstract: A comb polymer can be used for reducing a Noack evaporation loss of a lubricant composition, especially of an engine oil composition. Application of the comb polymer to the lubricant composition can bring about the desired reduction. The comb polymer can include specified amounts of macromonomer and alkyl acrylates. Resulting lubricant compositions can include the comb polymer.Type: ApplicationFiled: August 28, 2017Publication date: July 4, 2019Applicant: Evonik Oil Additives GmbHInventors: Katrin Schöller, Stefan Maier, Sarah Lippert, Klaus Schimossek
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Publication number: 20190177640Abstract: The invention relates to a poly alkyl(meth)acrylate polymer comprising a combination of polybutadiene-based monomers having different average molecular weight, lubricant compositions comprising the polymer, a method for manufacturing the polymer and the use of the polymer as a viscosity index improver in a lubricating oil composition.Type: ApplicationFiled: December 12, 2018Publication date: June 13, 2019Applicant: Evonik Oil Additives GmbHInventors: Rebecca Klein, Holger Becker, Dieter Janßen, Sebastian Seibel
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Publication number: 20190177641Abstract: The invention relates to a poly alkyl(meth)acrylate polymer comprising a combination of polybutadiene-based monomers having different average molecular weight, lubricant compositions comprising the polymer, a method for manufacturing the polymer and the use of the polymer as a viscosity index improver in a lubricating oil composition.Type: ApplicationFiled: December 12, 2018Publication date: June 13, 2019Applicant: Evonik Oil Additives GmbHInventors: Rebecca Klein, Holger Becker, Dieter Janßen, Sebastian Seibel
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Publication number: 20190071615Abstract: Polyalkyl(meth)acrylate based comb polymers with weight-average molecular weights of 700,000 g/mol or greater and number-average molecular weights of 130,000 g/mol or greater can be used to improve the high temperature-high shear performance of lubricant compositions, especially of engine oil (EO) compositions. These polymers can be obtained in a reaction mixture comprising monomers, a dilution oil, and an initiator. The resulting lubricant compositions can have improved kinematic viscosity and high temperature high shear performance.Type: ApplicationFiled: August 31, 2018Publication date: March 7, 2019Applicant: Evonik Oil Additives GmbHInventors: Katrin SCHÖLLER, Sarah LIPPERT, Wolfgang TSCHEPAT, Klaus SCHIMOSSEK
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Patent number: 10131776Abstract: The present invention describes a composition comprising at least one polyalkyl(meth)acrylate polymer having a number average molecular weight Mn of from 1000 to 10000 g/mol and a polydispersity Mw/Mn of from 1 to 8 and at least one ethylene vinyl acetate copolymer comprising units being derived from at least one alkyl (meth)acrylate having 1 to 30 carbon atoms in the alkyl residue. The composition is useful as cold flow improver in fossil fuel oil and or biodiesel fuel oil.Type: GrantFiled: July 21, 2010Date of Patent: November 20, 2018Assignee: EVONIK OIL ADDITIVES GmbHInventors: Ronny Sondjaja, Rene Koschabek, Markus Weber, Jane Benito, Jian Mike Liu, Torsten Stoehr
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Publication number: 20180319919Abstract: 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: ApplicationFiled: July 13, 2018Publication date: November 8, 2018Applicant: Evonik Oil Additives GmbHInventors: Rhishikesh GOKHALE, Sandra GEBHARDT, Miriam Kathrin Stihulka, Klaus Schimossek, Frank-Olaf Maehling
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Publication number: 20180245013Abstract: The invention relates to low molecular weight hydrogenated polybutadienes and to a method for the preparation of these polymers. The invention is also directed to lubricant compositions comprising these polymers and uses thereof.Type: ApplicationFiled: February 27, 2018Publication date: August 30, 2018Applicant: Evonik Oil Additives GmbHInventors: Sofia Sirak, Holger Pletsch, Marius Kemper
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Publication number: 20180216023Abstract: The present invention relates to a lubricating oil composition comprising polyglycerol partial esters of polyfunctional carboxylic acids and saturated or unsaturated, linear or branched fatty acids and/or poly(hydroxystearic acid) and the use thereof to lubricate an engine and reduce friction.Type: ApplicationFiled: July 6, 2016Publication date: August 2, 2018Applicant: Evonik Oil Additives GmbHInventors: Stefan MAIER, Oliver SPRINGER, Jennifer HOLTZINGER, Klaus SCHIMOSSEK, Thomas DAMASKE, Marcus STEPHAN, Jan Marian VON HOF
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Patent number: 9957342Abstract: 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: GrantFiled: October 8, 2013Date of Patent: May 1, 2018Assignee: Evonik Oil Additives GmbHInventors: Justin August Langston, Barbara Voltz, Frank-Olaf Maehling, Michael G Duckworth, Brian Hess, Rhishikesh Gokhale
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Patent number: 9914896Abstract: The present invention relates to a lubricant composition comprising at least one polyalkyl(meth)acrylate including repeating units derived from (meth)acrylates having 6 to 22 carbon atoms in the alcohol radical, wherein the polyalkyl(meth)acrylate includes repeating units derived from ethylenically unsaturated monomers having at least one covalently bonded phosphorus atom. The present invention further relates to a polyalkyl(meth)acrylate suitable for such a lubricant composition and to the use of a polyalkyl(meth)acrylate having repeating units derived from ethylenically unsaturated monomers having at least one covalently bonded phosphorus atom for reducing friction.Type: GrantFiled: April 19, 2012Date of Patent: March 13, 2018Assignee: Evonik Oil Additives GmbHInventors: Boris Eisenberg, Ellen Suchert