Patents by Inventor Daniel J. Knapton
Daniel J. Knapton 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: 11702610Abstract: Lubricating compositions containing a phosphorus-containing salt of an acylated ethylene-?-olefin polymer substituted with an aliphatic polyamine having at least one primary or secondary amine, the lubricating composition having a total phosphorus content in an amount of 200 ppm to 600 ppm by weight of the lubricating composition. The phosphorus-containing salt additive described herein can be used as an anti-wear agent in lubricating composition for diesel engines.Type: GrantFiled: June 19, 2019Date of Patent: July 18, 2023Assignee: The Lubrizol CorporationInventors: Daniel J. Knapton, Allison M. Williamson, Thomas Derevjanik
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Patent number: 11261398Abstract: A hydraulic fluid includes an oil of lubricating viscosity and at least 2 wt. % of an ester of a carboxy group-containing interpolymer comprising units derived from a vinyl aromatic monomer and units derived from a carboxylic acid monomer. The interpolymer also contains nitrogen functionality. The hydraulic fluid is at least substantially free of polyacrylates and polymethacrylates.Type: GrantFiled: April 19, 2017Date of Patent: March 1, 2022Assignee: The Lubrizol CorporationInventors: Daniel J. Knapton, David Cressey, Daniel C. Visger
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Publication number: 20210269735Abstract: Lubricating compositions containing a phosphorus-containing salt of an acylated ethylene-?-olefin polymer substituted with an aliphatic polyamine having at least one primary or secondary amine, the lubricating composition having a total phosphorus content in an amount of 200 ppm to 600 ppm by weight of the lubricating composition. The phosphorus-containing salt additive described herein can be used as an anti-wear agent in lubricating composition for diesel engines.Type: ApplicationFiled: June 19, 2019Publication date: September 2, 2021Applicant: The Lubrizol CorporationInventors: Daniel J. Knapton, Allison M. Williamson, Thomas Derevjanik
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Publication number: 20200318028Abstract: A hydraulic fluid includes an oil of lubricating viscosity and at least 2 wt. % of an ester of a carboxy group-containing interpolymer comprising units derived from a vinyl aromatic monomer and units derived from a carboxylic acid monomer. The interpolymer also contains nitrogen functionality. The hydraulic fluid is at least substantially free of polyacrylates and polymethacrylates.Type: ApplicationFiled: April 19, 2017Publication date: October 8, 2020Applicant: The Lubrizol CorporationInventors: Daniel J. Knapton, David Cressey, Daniel C. Visger
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Patent number: 10597599Abstract: A lubricant composition of an oil of lubricating viscosity, an ashless condensation reaction product of an olefin polymer, having a number average molecular weight of 2,000 to 70,000, comprising carboxylic acid or equivalent functionality grafted onto the polymer backbone, with a monoamine or a polyamine often having a single primary amino group; a succinimide dispersant; and an overbased metal detergent, in an amount such that the total base number of the lubricant composition is less than 6.5, exhibits good sludge prevention performance in a gasoline engine.Type: GrantFiled: November 17, 2016Date of Patent: March 24, 2020Assignee: The Lubrizol CorporationInventors: Daniel J. Knapton, Ewan E. Delbridge, Matthew D. Gieselman, Jack C. Kelley
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Publication number: 20180371357Abstract: A lubricant composition of an oil of lubricating viscosity, an ashless condensation reaction product of an olefin polymer, having a number average molecular weight of 2,000 to 70,000, comprising carboxylic acid or equivalent functionality grafted onto the polymer backbone, with a monoamine or a polyamine often having a single primary amino group; a succinimide dispersant; and an overbased metal detergent, in an amount such that the total base number of the lubricant composition is less than 6.5, exhibits good sludge prevention performance in a gasoline engine.Type: ApplicationFiled: November 17, 2016Publication date: December 27, 2018Inventors: Daniel J. Knapton, Ewan E. Delbridge, Matthew D. Gieselman, Jack C. Kelley
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Publication number: 20180201865Abstract: A lubricant composition of (a) an oil of lubricating viscosity; (b) a poly(meth)acrylate ester polymer comprising 0.5 to 5 weight percent of amine nitrogen-containing dispersant monomer units and (c) an esterified copolymer with a backbone comprising units derived from (i) an ?-olefin monomer of at least about 6 carbon atoms, (ii) an ethylenically unsaturated carboxylic acid or derivative thereof, further containing nitrogen functionality in groups pendant from the copolymer backbone, provides a good combination of seal performance and oxidation resistance.Type: ApplicationFiled: June 21, 2016Publication date: July 19, 2018Inventor: Daniel J. Knapton
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Patent number: 9758743Abstract: A lubricant composition of an oil of lubricating viscosity; an esterified copolymer with a backbone comprising units derived from (i) an ?-olefin monomer of at least about 6 carbon atoms and (ii) an ethylenically unsaturated carboxylic acid in a mole ratio of 1:3 to 3:1; and a polymer comprising olefin monomer units of 3 to 5 carbon atoms, wherein at least 50 percent by weight of such units contain fewer than 6 carbon atoms and wherein less than 5 percent by weight of such units are ethylene monomer units; exhibits good power transfer efficiency and elastohydrodynamic film thickness.Type: GrantFiled: February 14, 2013Date of Patent: September 12, 2017Assignee: The Lubrizol CorporationInventors: Daniel J. Knapton, William R. S. Barton, Brett Wessler, Mark R. Baker
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Publication number: 20170088789Abstract: A lubricant composition comprising (a) an oil of lubricating viscosity; (b) a (meth)-acrylate-containing polymer comprising a multiplicity of arms containing at least 20 carbon atoms, said arms being attached to a multivalent organic moiety; and (c) an ethylene/olefin copolymer having a weight average molecular weight of about 10,000 to about 250,000, wherein the copolymer comprises about 40 to about 70 weight percent polymerized ethylene monomers and optionally further comprises polymerized propylene monomers; exhibits good viscometric and antiwear properties.Type: ApplicationFiled: February 24, 2015Publication date: March 30, 2017Inventors: Bryan A. Grisso, Daniel C. Visger, David Price, Barton J. Schober, William J. Dimitrakis, David Cressey, Kondunthirapully S. Padmanabhan, Daniel J. Knapton
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Patent number: 9550799Abstract: A process is provided for preparing a salt of a hydroxy-substituted ester of phosphoric acid, comprising: (a) reacting a phosphate diester with an alkylene oxide, (b) reacting the product mixture of step (a) with a phosphating agent; and (c) reacting the product mixture of step (b) with an amine; wherein the phosphate diester is reacted with the alkylene oxide of step (a) in the substantial absence of a phosphate monoester. The product is useful as an antiwear agent.Type: GrantFiled: August 23, 2011Date of Patent: January 24, 2017Assignee: The Lubrizol CorporationInventors: Daniel J. Knapton, Troy A. Conant
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Patent number: 9382275Abstract: A process is provided for preparing a salt of a hydroxy-substituted di-ester of phosphoric acid, comprising: (a) reacting a phosphating agent with a monohydric alcohol and with an alkylene polyol, wherein the mole ratio of monohydric alcohol:alkylene polyol is about 0.2:0.8 to about 0.8:0.2 and wherein an excess of the phosphating agent is employed such that the product mixture formed thereby contains phosphorus acid functionality; and (b) reacting the product mixture of step (a) with an amine. The product is useful as an antiwear agent.Type: GrantFiled: August 24, 2011Date of Patent: July 5, 2016Assignee: The Lubrizol CorporationInventors: Daniel J. Knapton, William R. S. Barton, David J. Aaserud
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Publication number: 20150307527Abstract: A process is provided for preparing a salt of a hydroxy-substituted di-ester of phosphoric acid, comprising: (a) reacting a phosphating agent with a monohydric alcohol and with an alkylene polyol, wherein the mole ratio of monohydric alcohol:alkylene polyol is about 0.2:0.8 to about 0.8:0.2 and wherein an excess of the phosphating agent is employed such that the product mixture formed thereby contains phosphorus acid functionality; and (b) reacting the product mixture of step (a) with an amine. The product is useful as an antiwear agent.Type: ApplicationFiled: August 24, 2011Publication date: October 29, 2015Applicant: THE LUBRIZOL CORPORATIONInventors: Daniel J. Knapton, William R.S. Barton, David J. Aaserud
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Publication number: 20150291908Abstract: A lubricant composition of an oil of lubricating viscosity and a polymeric phosphorus ester comprising the condensation product of a monomeric phosphorus acid or an ester thereof with a diol having two hydroxy groups separated by a chain of 4 to about 100 atoms exhibits good volatility, corrosion, wear, and/or seal performance in lubrication of a transmission.Type: ApplicationFiled: June 25, 2015Publication date: October 15, 2015Inventors: Craig D. Tipton, Charla A. Ramsey, Daniel J. Knapton, Paul E. Adams
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Publication number: 20150240183Abstract: A lubricant composition comprising an oil of lubricating viscosity having a kinematic viscosity at 100° C. of less than 15 mm2/s; and an esterified copolymer with a backbone comprising units derived from (i) an ?-olefin monomer of at least 6 carbon atoms and (ii) an ethylenically unsaturated carboxylic acid or derivative thereof, optionally containing nitrogen functionality; and an ethylene ?-olefin copolymer comprising greater than 5 weight percent ethylene monomer units, exhibits good operating efficiency when used to lubricate a mechanical device.Type: ApplicationFiled: September 17, 2013Publication date: August 27, 2015Applicant: THE LUBRIZOL CORPORATIONInventor: Daniel J. Knapton
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Patent number: 9074157Abstract: A lubricant composition of an oil of lubricating viscosity and a polymeric phosphorus ester comprising the condensation product of a monomeric phosphorus acid or an ester thereof with a diol having two hydroxy groups separated by a chain of 4 to about 100 atoms exhibits good volatility, corrosion, wear, and/or seal performance in lubrication of a transmission.Type: GrantFiled: April 21, 2010Date of Patent: July 7, 2015Assignee: The Lubrizol CorporationInventors: Craig D. Tipton, Charla A. Ramsey, Daniel J. Knapton, Paul E. Adams
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Publication number: 20140364349Abstract: A lubricant composition of an oil of lubricating viscosity; an esterified copolymer with a backbone comprising units derived from (i) an ?-olefin monomer of at least about 6 carbon atoms and (ii) an ethylenically unsaturated carboxylic acid in a mole ratio of 1:3 to 3:1; and a polymer comprising olefin monomer units of 3 to 5 carbon atoms, wherein at least 50 percent by weight of such units contain fewer than 6 carbon atoms and wherein less than 5 percent by weight of such units are ethylene monomer units; exhibits good power transfer efficiency and elastohydrodynamic film thickness.Type: ApplicationFiled: February 14, 2013Publication date: December 11, 2014Inventors: Daniel J. Knapton, William R. S. Barton, Brett Wessler, Mark R. Baker
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Publication number: 20130252864Abstract: A process is provided for preparing a salt of a hydroxy-substituted ester of phosphoric acid, comprising: (a) reacting a phosphate diester with an alkylene oxide, (b) reacting the product mixture of step (a) with a phosphating agent; and (c) reacting the product mixture of step (b) with an amine; wherein the phosphate diester is reacted with the alkylene oxide of step (a) in the substantial absence of a phosphate monoester. The product is useful as an antiwear agent.Type: ApplicationFiled: August 23, 2011Publication date: September 26, 2013Applicant: THE LUBRIZOL CORPORATIONInventors: Daniel J. Knapton, Troy A. Conant
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Publication number: 20130079264Abstract: A lubricant composition of an oil of lubricating viscosity and a polymeric phosphorus ester comprising the condensation product of a monomeric phosphorus acid or an ester thereof with a diol having two hydroxy groups separated by a chain of 4 to about 100 atoms exhibits good volatility, corrosion, wear, and/or seal performance in lubrication of a transmission.Type: ApplicationFiled: April 21, 2010Publication date: March 28, 2013Applicant: THE LUBRIZOL CORPORATIONInventors: Craig D. Tipton, Charla A. Ramsey, Daniel J. Knapton, Paul E. Adams
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Patent number: 8257975Abstract: The present invention relates to using a marker in a functional fluid, which survives the use of the functional fluid in an application, with a reagent solution to identify the functional fluid rapidly either before, during or after the functional fluid's use and which is a suitable method for identifying a functional fluid in the field, and which may employ the use of test wipe, or medium, that contains the reagent solution.Type: GrantFiled: March 19, 2009Date of Patent: September 4, 2012Assignee: The Lubrizol CorporationInventors: Daniel J. Knapton, John S. Manka
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Publication number: 20110020940Abstract: The present invention relates to using a marker in a functional fluid, which survives the use of the functional fluid in an application, with a reagent solution to identify the functional fluid rapidly either before, during or after the functional fluid's use and which is a suitable method for identifying a functional fluid in the field, and which may employ the use of test wipe, or medium, that contains the reagent solution.Type: ApplicationFiled: March 19, 2009Publication date: January 27, 2011Applicant: The Lubrizol CorporationInventors: Daniel J. Knapton, John S. Manka