Patents by Inventor Akhilesh Duggal
Akhilesh Duggal 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).
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Patent number: 11505761Abstract: Embodiments of the present disclosure generally relate to diluent oils for viscosity modifiers and additive packages. Embodiments of the present disclosure also generally relate to lubricating oil compositions that include viscosity modifier concentrates and lubricating oil compositions that include additive package concentrates. Improved diluent oils capable of conveniently and cost effectively improving overall lubricant performance are provided.Type: GrantFiled: September 14, 2021Date of Patent: November 22, 2022Assignee: Exxon Mobil Technology and Engineering CompanyInventors: Beatrice M. Gooding, Akhilesh Duggal, Toufic Aridi, Samantha Novoa, Lauren F. McKibben, Charles L. Baker, Jr.
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Publication number: 20220081641Abstract: Embodiments of the present disclosure generally relate to diluent oils for viscosity modifiers and additive packages. Embodiments of the present disclosure also generally relate to lubricating oil compositions that include viscosity modifier concentrates and lubricating oil compositions that include additive package concentrates. Improved diluent oils capable of conveniently and cost effectively improving overall lubricant performance are provided.Type: ApplicationFiled: September 14, 2021Publication date: March 17, 2022Inventors: Beatrice M. Gooding, Akhilesh Duggal, Toufic Aridi, Samantha Novoa, Lauren F. McKibben, Charles L. Baker, JR.
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Patent number: 9354180Abstract: The present invention relates to methods for determining the level of intermolecular interaction of a polymer based on the fraction of intermolecular interaction (finter) relative to the inter, total molecular interaction, which includes both intermolecular and intramolecular interactions. Further provided herein is a method of identifying a suitable viscosity index improver based on the value of finter. The identified suitable viscosity index improver can be used in a lubricating oil composition for, e.g., a power transmission system.Type: GrantFiled: September 15, 2015Date of Patent: May 31, 2016Assignees: Afron Chemical Corporation, University of WaterlooInventors: Sheng Jiang, Akhilesh Duggal, Jean Duhamel, Solmaz Pirouz
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Publication number: 20160077012Abstract: The present invention relates to methods for determining the level of intermolecular interaction of a polymer based on the fraction of intermolecular interaction (finter) relative to the inter, total molecular interaction, which includes both intermolecular and intramolecular interactions. Further provided herein is a method of identifying a suitable viscosity index improver based on the value of finter. The identified suitable viscosity index improver can be used in a lubricating oil composition for, e.g., a power transmission system.Type: ApplicationFiled: September 15, 2015Publication date: March 17, 2016Applicants: Afton Chemical Corporation, University of WaterlooInventors: Sheng Jiang, Akhilesh Duggal, Jean Duhamel, Solmaz Pirouz
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Patent number: 8999905Abstract: A hydrogenated styrene butadiene star copolymer is incorporated in a lubricant additive package. The star copolymer can include about 3 to 25% and about 97 to 75% butadiene. The star copolymer may further be incorporated in a lubricant additive in the amount of about 12 wt % of the star copolymer as compared to the base oil.Type: GrantFiled: October 25, 2010Date of Patent: April 7, 2015Assignee: Afton Chemical CorporationInventor: Akhilesh Duggal
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Publication number: 20150038382Abstract: A gear oil composition, a method for operating an automotive gear, and a method for improving performance of a gear oil that includes a) a major amount of a base oil having a lubricating viscosity; b) a polysulfide extreme pressure agent; and c) a reaction product of an acylated copolymer and a polyamine.Type: ApplicationFiled: October 17, 2014Publication date: February 5, 2015Applicant: AFTON CHEMICAL CORPORATIONInventors: Ian MACPHERSON, Donald Robert BELL, Akhilesh DUGGAL
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Patent number: 8865633Abstract: A gear oil composition, a method for operating an automotive gear, and a method for improving performance of a gear oil that includes a) a major amount of a base oil having a lubricating viscosity; b) a polysulfide extreme pressure agent; and c) a reaction product of an acylated copolymer and a polyamine.Type: GrantFiled: August 24, 2011Date of Patent: October 21, 2014Assignee: Afton Chemical CorporationInventors: Ian MacPherson, Donald Robert Bell, Akhilesh Duggal
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Patent number: 8415284Abstract: A lubricating oil composition and methods of operating an internal combustion engine to provide improved engine operation. The lubricating composition includes a major amount of oil of lubricating viscosity and a minor amount of at least one olefin copolymer having a number average molecular weight greater than about 10,000 up to about 300,000. The olefin copolymer is grafted with (A) a vinyl-substituted aromatic compound, and (B) a compound selected from the group consisting of a C5-C30 olefin, a polyalkylene compound, and mixtures thereof. A mole ratio of A/B in the reaction mixture ranges from about 0.25:1 to about 5:1. The lubricating composition optionally includes a minor amount of at least one non-grafted olefin copolymer, styrene-isoprene copolymer, methacrylate copolymer, or styrene butadiene copolymer have number average molecular weight greater than about 50,000 up to about 300,000.Type: GrantFiled: November 5, 2009Date of Patent: April 9, 2013Assignee: Afton Chemical CorporationInventor: Akhilesh Duggal
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Publication number: 20130053288Abstract: A gear oil composition, a method for operating an automotive gear, and a method for improving performance of a gear oil that includes a) a major amount of a base oil having a lubricating viscosity; b) a polysulfide extreme pressure agent; and c) a reaction product of an acylated copolymer and a polyamine.Type: ApplicationFiled: August 24, 2011Publication date: February 28, 2013Applicant: AFTON CHEMICAL CORPORATIONInventors: Ian MACPHERSON, Donald Robert BELL, Akhilesh DUGGAL
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Publication number: 20120101017Abstract: A hydrogenated styrene butadiene star copolymer is incorporated in a lubricant additive package. The star copolymer can include about 3 to 25% and about 97 to 75% butadiene. The star copolymer may further be incorporated in a lubricant additive in the amount of about 12 wt % of the star copolymer as compared to the base oil.Type: ApplicationFiled: October 25, 2010Publication date: April 26, 2012Inventor: Akhilesh Duggal
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Publication number: 20110105371Abstract: A lubricating oil composition and methods of operating an internal combustion engine to provide improved engine operation. The lubricating composition includes a major amount of oil of lubricating viscosity and a minor amount of at least one olefin copolymer having a number average molecular weight greater than about 10,000 up to about 300,000. The olefin copolymer is grafted with (A) a vinyl-substituted aromatic compound, and (B) a compound selected from the group consisting of a C5-C30 olefin, a polyalkylene compound, and mixtures thereof. A mole ratio of A/B in the reaction mixture ranges from about 0.25:1 to about 5:1. The lubricating composition optionally includes a minor amount of at least one non-grafted olefin copolymer, styrene-isoprene copolymer, methacrylate copolymer, or styrene butadiene copolymer have number average molecular weight greater than about 50,000 up to about 300,000.Type: ApplicationFiled: November 5, 2009Publication date: May 5, 2011Applicant: AFTON CHEMICAL CORPORATIONInventor: Akhilesh DUGGAL
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Patent number: 7696138Abstract: A novel reaction product and method for making the reaction product. The reaction product is a copolymer obtained by reacting together i) an acylated alkylacrylate copolymer having a number average molecular weight ranging from about 5,000 to about 500,000; ii) a hydrocarbyl acylating agent having a number average molecular weight ranging from about 500 to about 5000; and iii) a compound selected from the group consisting of (a) a polyamine; (b) a polyol; and (c) an aminoalcohol to provide a functionalized polyalkylacrylate copolymer. According to the reaction, a mole ratio of component (i) to (ii) ranges from about 1:10 to about 5:1.Type: GrantFiled: June 18, 2007Date of Patent: April 13, 2010Assignee: Afton Chemical CorporationInventors: Naresh C. Mathur, John T. Loper, Akhilesh Duggal
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Publication number: 20090325831Abstract: An additive concentrate comprising a viscosity index modifying copolymer comprising the reaction product of an acylated ethylene-olefin copolymer and a polyamine, and lubricating compositions containing the same are provided. Methods of improving boundary film resistance of a lubricating composition and modifying the viscosity of a lubricating composition are also provided.Type: ApplicationFiled: June 30, 2008Publication date: December 31, 2009Inventors: Naresh C. Mathur, Akhilesh Duggal, Mark T. Devlin
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Publication number: 20080221271Abstract: A methacrylate terpolymer, methods for making the terpolymer, and lubricant compositions containing the terpolymer. The terpolymer is derived from (a) a C4-alkylmethacrylate monomeric unit; (b) a C10-15-alkylmethacrylate monomeric unit; and (c) a di-lower-alkylaminoalkyl methacrylate monomeric unit. Component (a) is in the terpolymer in an amount ranging from about 15 up to less than about 30 percent by weight of the terpolymer. Component (b) is in the terpolymer in an amount ranging from more than about 70 up to about 80 percent by weight of the terpolymer. Component (c) is in the terpolymer in an amount ranging from about 2 to less than about 10 percent by weight of the terpolymer.Type: ApplicationFiled: March 5, 2007Publication date: September 11, 2008Inventors: Akhilesh Duggal, Theresa L. Slayton
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Publication number: 20080051520Abstract: A novel a multi-functional polymer viscosity modifier comprising an additive reaction product obtained by reacting a first monomer comprising an alkylacrylate with a second monomer comprising an olefinic carboxylic acylating agent under conditions effective for free radical polymerization of the first and second monomers to provide a base polymer comprising an acylated alkylacrylate copolymer, and wherein the base polymer optionally may be further reacted with an amine compound to provide a multi-functional polyalkylacrylate copolymer. The base polymer has good thickening efficiency. The multi-functional polyalkylacrylate copolymer dispersant viscosity modifier has good thickening efficiency. The base polymer and the multi-functional polyalkylacrylate copolymer viscosity modifier have good thickening efficiency, low temperature properties, dispersancy, and antioxidancy properties. They also have no precipitation or sedimentation, nor cause or encourage such formations in finished fluids incorporating them.Type: ApplicationFiled: September 11, 2007Publication date: February 28, 2008Applicant: AFTON CHEMICAL CORPORATIONInventors: Sanjay Srinivasan, John Loper, Naresh Mathur, Akhilesh Duggal
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Publication number: 20080033114Abstract: A novel a multi-functional polymer viscosity modifier comprising an additive reaction product obtained by reacting a first monomer comprising an alkylacrylate with a second monomer comprising an olefinic carboxylic acylating agent under conditions effective for free radical polymerization of the first and second monomers to provide a base polymer comprising an acylated alkylacrylate copolymer, and wherein the base polymer optionally may be further reacted with an amine compound to provide a multi-functional polyalkylacrylate copolymer. The base polymer has good thickening efficiency. The multi-functional polyalkylacrylate copolymer dispersant viscosity modifier has good thickening efficiency. The base polymer and the multi-functional polyalkylacrylate copolymer viscosity modifier have good thickening efficiency, low temperature properties, dispersancy, and antioxidancy properties. They also have no precipitation or sedimentation, nor cause or encourage such formations in finished fluids incorporating them.Type: ApplicationFiled: July 28, 2006Publication date: February 7, 2008Inventors: Sanjay Srinivasan, John T. Loper, Naresh C. Mathur, Akhilesh Duggal
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Publication number: 20080026964Abstract: A novel a multi-functional polymer viscosity modifier comprising an additive reaction product obtained by reacting a first monomer comprising an alkylacrylate with a second monomer comprising an olefinic carboxylic acylating agent under conditions effective for free radical polymerization of the first and second monomers to provide a base polymer comprising an acylated alkylacrylate copolymer, and wherein the base polymer optionally may be further reacted with an amine compound to provide a multi-functional polyalkylacrylate copolymer. The base polymer has good thickening efficiency. The multi-functional polyalkylacrylate copolymer dispersant viscosity modifier has good thickening efficiency. The base polymer and the multi-functional polyalkylacrylate copolymer viscosity modifier have good thickening efficiency, low temperature properties, dispersancy, and antioxidancy properties. They also have no precipitation or sedimentation, nor cause or encourage such formations in finished fluids incorporating them.Type: ApplicationFiled: September 11, 2007Publication date: January 31, 2008Applicant: AFTON CHEMICAL CORPORATIONInventors: Sanjay SRINIVASAN, John Loper, Naresh Mathur, Akhilesh Duggal
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Publication number: 20080026972Abstract: A novel reaction product and method for making the reaction product. The reaction product is a copolymer obtained by reacting together i) an acylated alkylacrylate copolymer having a number average molecular weight ranging from about 5,000 to about 500,000; ii) a hydrocarbyl acylating agent having a number average molecular weight ranging from about 500 to about 5000; and iii) a compound selected from the group consisting of (a) a polyamine; (b) a polyol; and (c) an aminoalcohol to provide a functionalized polyalkylacrylate copolymer. According to the reaction, a mole ratio of component (i) to (ii) ranges from about 1:10 to about 5:1.Type: ApplicationFiled: June 18, 2007Publication date: January 31, 2008Inventors: Naresh C. MATHUR, John T. Loper, Akhilesh Duggal
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Publication number: 20070191242Abstract: A lubricant composition method of using the lubricant composition. The lubricant composition contains a base oil of lubricating viscosity and from about 5 to about 30 percent by weight of an additive comprising a shear stable olefin copolymer derived from a copolymer having a number average molecular weight ranging from about 50,000 to about 250,000. The shear stable olefin copolymer has a shear stability index of less than about 40, a polydispersity of not more than about 1.5, and a thickening efficiency of greater than about 1.8, and provides viscosity index improving properties to the lubricant composition.Type: ApplicationFiled: September 17, 2004Publication date: August 16, 2007Inventors: Sanjay Srinivasan, Yoon Song, Joseph Strukl, Peter Growcott, Paul Griffin, Akhilesh Duggal
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Publication number: 20060252660Abstract: An acrylic acid ester polymer having improved characteristics and oleaginous compositions containing the acrylic acid ester polymer. The acrylic acid ester polymer includes a copolymer derived from a first acrylic acid ester monomer having from about 1 to about 4 carbon atoms, a second acrylic acid ester monomer having from about 12 to about 14 carbon atoms, and a third acrylic acid ester monomer having from about 16 to about 20 carbon atoms. The copolymer has a weight average molecular weight ranging from about 20,000 to about 100,000 daltons and contains no more than about 1 weight percent unreacted monomer.Type: ApplicationFiled: May 9, 2005Publication date: November 9, 2006Inventors: Akhilesh Duggal, Helen Ryan, Theresa Slayton, Roger Sheets