Patents by Inventor John T. Loper

John T. Loper 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).

  • Patent number: 10584297
    Abstract: Ethylene-C3-C10 alpha olefin copolymers, dispersants and lubricating oils/fuel compositions incorporating dispersants, and related methods are generally described herein. The copolymer may comprise ethylene-derived units and C3-C10 alpha-olefin-derived units. The C3-C10 alpha-olefin-derived units may have a carbon number from three to ten. For example, the C3-C10 alpha-olefin-derived units may be propylene-derived units.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: March 10, 2020
    Assignee: AFTON Chemical Corporation
    Inventors: Nathaniel Cain, John T. Loper, Lawrence Cunningham, Joseph W. Roos
  • Publication number: 20180223017
    Abstract: Polyisobutylenes (PIBs) containing a high proportion of vinylidene end groups are generally favored over conventional PIBs because of their higher reactivity in reactions that are needed to prepare fuel and lubricant additives. However, detergent additives that have been prepared from conventional PIBs actually perform better than detergent additives prepared from high reactive PIBs. Specifically, detergent additives that were prepared from conventional PIB that was then enriched with tri- and tetra-PIB resulted in altered thermal stability and improved detergency of the resulting compound as compared to the structures which were created using a high proportion of vinylidene end groups.
    Type: Application
    Filed: March 30, 2018
    Publication date: August 9, 2018
    Inventors: William Jay Colucci, Charles S. Shanahan, Michel Nuckols, Alice Diane Gauthier, John T. Loper
  • Publication number: 20180163153
    Abstract: Ethylene-C3-C10 alpha olefin copolymers, dispersants and lubricating oils/fuel compositions incorporating dispersants, and related methods are generally described herein. The copolymer may comprise ethylene-derived units and C3-C10 alpha-olefin-derived units. The C3-C10 alpha-olefin-derived units may have a carbon number from three to ten. For example, the C3-C10 alpha-olefin-derived units may be propylene-derived units.
    Type: Application
    Filed: December 13, 2016
    Publication date: June 14, 2018
    Applicant: Afton Chemical Corporation
    Inventors: Nathaniel Cain, John T. Loper, Lawrence Cunningham, Joseph W. Roos
  • Publication number: 20170158785
    Abstract: Polyisobutylenes (PIBs) containing a high proportion of vinylidene end groups are generally favored over conventional PIBs because of their higher reactivity in reactions that are needed to prepare fuel and lubricant additives. However, detergent additives that have been prepared from conventional PIBs actually perform better than detergent additives prepared from high reactive PIBs. Specifically, detergent additives that were prepared from conventional PIB that was then enriched with tri- and tetra-PIB resulted in altered thermal stability and improved detergency of the resulting compound as compared to the structures which were created using a high proportion of vinylidene end groups.
    Type: Application
    Filed: December 7, 2015
    Publication date: June 8, 2017
    Applicant: Afton Chemical Corporation
    Inventors: William Jay Colucci, Charles S. Shanahan, Michel Nuckols, Alice Diane Gauthier, John T. Loper
  • Patent number: 9663743
    Abstract: A lubricant composition, lubricant concentrate and method for reducing engine deposits. The composition and method include a base oil of lubricating viscosity; an organo-molybdenum compound; a deposition reducing amount of a reaction product of an alkyl-substituted dicarboxylic acid compound selected from the group consisting of alkyl-substituted dicarboxylic acids, alkyl-substituted dicarboxylic acid anhydrides, and mixtures thereof, and a basic salt of aminoguanidine, in an amount sufficient to provide a product rich in alkyl bis-3-amino-1,2,4-triazole; and optionally a phenate detergent. The lubricant composition and method provide engine deposits that are less than an amount of engine deposits in the absence of component (c) and/or optional component (d).
    Type: Grant
    Filed: June 10, 2009
    Date of Patent: May 30, 2017
    Assignee: AFTON CHEMICAL CORPORATION
    Inventors: Paul G. Griffin, Ian A. Bell, John T. Loper, William Y. Lam, Gregory H. Guinther
  • Patent number: 9574158
    Abstract: A compression-ignited engine lubricant and a method for reducing engine wear. The lubricant including, (a) a base oil; (b) oleamide; (c) zinc dihydrocarbyl dithiophosphate; and (d) a functionalized dispersant. The functionalized dispersant is made by reacting together (i) a hydrocarbyl-dicarboxylic acid or anhydride, (ii) a polyamine, (iii) a dicarboxyl-containing fused aromatic compound or anhydride thereof, and optionally, (iv) a non-aromatic dicarboxylic acid or anhydride, wherein the hydrocarbyl group of the hydrocarbyl-dicarboxylic acid or anhydride has a number average molecular weight of greater than 1800 Daltons as determined by gel permeation chromatography.
    Type: Grant
    Filed: May 1, 2015
    Date of Patent: February 21, 2017
    Assignee: Afton Chemical Corporation
    Inventors: Jason A. Lagona, John T. Loper
  • Patent number: 9550955
    Abstract: A lubricating oil comprises a major amount of a base oil and a minor amount of an additive package, and the additive package comprises at least one friction modifier of formula I: where R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl having about 8 to about 22 carbon atoms or R is represented by: and R1 is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl having about 8 to about 22 carbon atoms and R2 is hydrogen or a hydrocarbyl having about 1 to about 2 carbon atoms. Methods of using the lubricating oil to improve thin film and/or boundary layer friction in an engine are also disclosed.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: January 24, 2017
    Assignee: Afton Chemical Corporation
    Inventors: John T. Loper, Jeremy P. Styer
  • Patent number: 9499761
    Abstract: A lubricating composition comprising a major amount of base oil and a minor amount of an additive package, wherein the additive package comprises: (A) a friction modifier component selected from: (a) one or more a reaction products of an alcohol with a compound of the formula IV: and (b) one or more compounds of the Formulae II-III: wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl having about 8 to about 22 carbon atoms; R2 and R3 are independently selected from hydrogen, C1-C18 hydrocarbyl groups, and C1-C18 hydrocarbyl groups containing one or more heteroatoms; and X is an alkali metal, alkaline earth metal, or ammonium cation and n is the valence of cation X; and (B) at least one metal dialkyl dithio phosphate salt.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: November 22, 2016
    Assignee: Afton Chemical Corporation
    Inventors: John T. Loper, Jeremy P. Styer
  • Patent number: 9499763
    Abstract: A lubricating oil comprising a major amount of base oil and a minor amount of an additive package, wherein the additive package comprises: (A) a friction modifier component selected from: (a) one or more a reaction products of an alcohol with a compound of the formula IV: and (b) one or more compounds of the Formulae II-III: wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl having about 8 to about 22 carbon atoms, R2 and R3 are independently selected from hydrogen C1-C18 hydrocarbyl groups, and C1-C18 hydrocarbyl groups containing one or more heteroatoms; X is an alkali metal, alkaline earth metal or ammonium cation and n is the valence of cation X, and reaction products of amines, amino alcohols, alkali or alkaline earth metal hydroxides, alkali or alkaline earth metal oxides and mixtures thereof with compounds of the Formula IV: Where R is as defined above; and (B) at least one friction modifier that is different from the one or
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: November 22, 2016
    Assignee: Afton Chemical Corporation
    Inventors: John T. Loper, Jeremy P. Styer
  • Patent number: 9499762
    Abstract: A lubricating composition comprising a major amount of base oil and a minor amount of an additive package, wherein the additive package comprises (A) a friction modifier component selected from: (a) one or more a reaction products of an alcohol with a compound of the formula IV: and (b) one or more compounds of the Formulae II-III: wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl having about 8 to about 22 carbon atoms; R2 and R3 are independently selected from hydrogen, C1-C18 hydrocarbyl groups, and C1-C18 hydrocarbyl groups containing one or more heteroatoms; and X is an alkali metal, alkaline earth metal or ammonium cation and n is the valence of cation X; and (B) at least one detergent.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: November 22, 2016
    Assignee: Afton Chemical Corporation
    Inventors: John T. Loper, Jeremy P. Styer
  • Patent number: 9499764
    Abstract: An engine oil comprising a major amount of a base oil and a minor amount of an additive package, wherein the additive package comprises: (A) a friction modifier compound of the formula IV: wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl group having about 8 to about 22 carbon atoms; and (B) at least one dispersant.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: November 22, 2016
    Assignee: Afton Chemical Corporation
    Inventors: John T. Loper, Jeremy P. Styer
  • Publication number: 20160186086
    Abstract: An engine oil comprising a major amount of a base oil and a minor amount of an additive package, wherein the additive package comprises: (A) a friction modifier compound of the formula IV: wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl group having about 8 to about 22 carbon atoms; and (B) at least one dispersant.
    Type: Application
    Filed: January 28, 2016
    Publication date: June 30, 2016
    Applicant: Afton Chemical Corporation
    Inventors: John T. Loper, Jeremy P. Styer
  • Patent number: 9296971
    Abstract: A lubricating oil comprising a major amount of a base oil and a minor amount of an additive package, and the additive package comprises at least one friction modifier selected from compounds of the formulae II, III and IV, and carboxylate salts thereof: wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl having about 8 to about 28 carbon atoms, n is 0 or 1; and the carboxylate salts have a cation that is an alkali metal, alkaline earth metal, group IIB metal, or ammonium cation; and a dispersant and/or a detergent wherein said lubricating oil comprises at total of at least 5 wt. % of the dispersant and/or the detergent. Methods of using the engine oil to improve thin film and/or boundary layer friction in an engine are also provided.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: March 29, 2016
    Assignee: Afton Chemical Corporation
    Inventor: John T. Loper
  • Patent number: 9279094
    Abstract: A lubricating oil comprising a major amount of base oil and a minor amount of an additive package comprising a friction modifier component selected from: (A) one or more friction modifiers of the formulae I and II: (B) two or more friction modifiers independently selected from the formulae III and IV: and (C) at least one friction modifier of the formulae III and IV in combination with at least one friction modifier of the formulae I and II, and R, R1, R2, R3, X and n are as defined in the specification.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: March 8, 2016
    Assignee: Afton Chemical Corporation
    Inventors: Jeremy P. Styer, John T. Loper
  • Patent number: 9249371
    Abstract: A lubricating composition comprising a major amount of base oil and a minor amount of an additive package, wherein the additive package comprises (A) a friction modifier component selected from: (a) one or more a reaction products of an alcohol with a compound of the formula IV: wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl group having about 8 to about 22 carbon atoms; and (b) one or more compounds of the Formulae II-III: wherein R is as defined above and R2 and R3 are independently selected from hydrogen, C1-C18hydrocarbyl groups, and C1-C18hydrocarbyl groups containing one or more heteroatoms; and wherein R is as defined above; and X is an alkali metal, alkaline earth metal or ammonium cation and n is the valence of cation X; and (B) at least one dispersant.
    Type: Grant
    Filed: December 21, 2012
    Date of Patent: February 2, 2016
    Assignee: Afton Chemical Corporation
    Inventors: John T. Loper, Jeremy P. Styer
  • Publication number: 20150344808
    Abstract: A compression-ignited engine lubricant and a method for reducing engine wear. The lubricant including, (a) a base oil; (b) oleamide; (c) zinc dihydrocarbyl dithiophosphate; and (d) a functionalized dispersant. The functionalized dispersant is made by reacting together (i) a hydrocarbyl-dicarboxylic acid or anhydride, (ii) a polyamine, (iii) a dicarboxyl-containing fused aromatic compound or anhydride thereof, and optionally, (iv) a non-aromatic dicarboxylic acid or anhydride, wherein the hydrocarbyl group of the hydrocarbyl-dicarboxylic acid or anhydride has a number average molecular weight of greater than 1800 Daltons as determined by gel permeation chromatography.
    Type: Application
    Filed: May 1, 2015
    Publication date: December 3, 2015
    Inventors: Jason A. LAGONA, John T. LOPER
  • Patent number: 9193932
    Abstract: A lubricating oil comprises a major amount of a base oil and a minor amount of an additive package, wherein the additive package comprises one or more friction modifiers including a reaction product of a hydroxy acid represented by HOCH2CO2H and an amine represented by the formula II: wherein R is a linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl having about 8 to about 22 carbon atoms; X is oxygen or —NH; and m is an integer from about 1 to about 4. The friction modifiers may include one or more compounds of the Formula I: wherein X is selected from oxygen, —NR1, and a glycolic amide moiety; and R and each R1 are independently selected from linear or branched, saturated, unsaturated, or partially saturated hydrocarbyl having about 8 to about 22 carbon atoms and one but not both of R and R1 can be hydrogen; and m is an integer from about 1 to about 4. Methods of improving thin film and/or boundary layer friction are also provided.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: November 24, 2015
    Assignee: Afton Chemical Corporation
    Inventor: John T. Loper
  • Patent number: 9090847
    Abstract: An ashless additive for lubricating oil compositions, lubricating oil compositions and methods for lubricating that are effective to improve the total base number (TBN) of a lubricant composition. The additive is a reaction product of a compound of the formula: with NH3, an alcohol, an amine, or a hydrocarbyl amine, wherein R1 is selected from H, a hydrocarbyl group, the alcohol or amine contains from 1 to about 24 carbon atoms, and the hydrocarbyl amine has a number average molecular weight ranging from about 100 to about 6000.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: July 28, 2015
    Assignee: Afton Chemical Corporation
    Inventors: Naresh Mathur, Jason A. Lagona, John T. Loper
  • Patent number: 8980804
    Abstract: A novel a polymer dispersant comprising an additive reaction product obtained by reacting a first monomer comprising a mixture of alkylacrylates of varying chain lengths 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 is further reacted with a hydrocarbyl amine to provide an amine-functionalized polyalkylacrylate copolymer dispersant. The base polymer intermediate has a number average molecular weight between about 5,000 to about 50,000. The polyalkylacrylate copolymer dispersant has good dispersancy, low temperature properties, thickening efficiency, and antioxidancy properties. They also can improve fuel economy when used in engine lubricating compositions.
    Type: Grant
    Filed: July 28, 2006
    Date of Patent: March 17, 2015
    Assignee: Afton Chemical Corporation
    Inventors: John T. Loper, Naresh C. Mathur, Sanjay Srinivasan
  • Publication number: 20150065408
    Abstract: A lubricant additive, an crankcase lubricant composition and a method for reducing intake valve deposits in a spark ignition direct injection (SIDI) engine. The lubricant additive includes (a) as a viscosity index improver, one or more ethylene/olefin copolymers derived from at least 40 mole % ethylene monomer units in an amount ranging from about 0.15 to about 0.95 wt. % based on a total weight of the lubricant composition, and (b) from about 0.1 to about 5.0 percent by weight based on a total weight of a lubricant composition of an aromatic compound having a boiling point under standard atmospheric conditions of from about 190° to about 270° C., wherein the lubricant additive is effective to reduce intake valve deposits in a SIDI engine.
    Type: Application
    Filed: November 6, 2014
    Publication date: March 5, 2015
    Inventors: Gregory H. GUINTHER, John T. LOPER