Olefin Or Alpha, Beta-olefinically Unsaturated Carboxylate Is An Additional Monomer Of The Polymer (e.g., Fumarate-ethylene Or Fumarate-acrylate Copolymers, Etc.) Patents (Class 508/468)
  • Patent number: 10145417
    Abstract: A ball bearing is filled with a grease composition. The grease composition contains a synthetic oil other than a synthetic hydrocarbon oil, a synthetic hydrocarbon oil, a mineral oil, and a urea compound. The synthetic oil other than the synthetic hydrocarbon oil is contained in an amount of 10% by mass or more and 60% by mass or less when the total of the synthetic oil other than the synthetic hydrocarbon oil, the synthetic hydrocarbon oil and the mineral oil is taken as 100% by mass.
    Type: Grant
    Filed: June 29, 2017
    Date of Patent: December 4, 2018
    Assignee: MINEBEA MITSUMI INC.
    Inventor: Motojiro Tsuna
  • Patent number: 9624453
    Abstract: An object of the present invention is to provide a lubricating oil composition having a low viscosity and an extremely high viscosity index as well as an excellent shearing stability. The present invention relates to a lubricating oil composition including the following components (A) to (C): (A) a low-viscosity synthetic oil including a compound containing an ether bond in a molecule thereof and having a kinematic viscosity of less than 10 mm2/s as measured at 40° C., in which a ratio of the number of oxygen atoms to the number of carbon atoms as constituents of the compound (O/C ratio) and the kinematic viscosity (mm2/s) of the compound as measured at 40° C. satisfy the following formula (1): Kinematic Viscosity at 40° C.?12?[(O/C ratio)×30]??(1); (B) a high-viscosity synthetic oil as a hydrocarbon-based synthetic oil having a kinematic viscosity of 40 mm2/s or more as measured at 100° C.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: April 18, 2017
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Yoshitaka Tamoto, Toshihiko Ichihashi, Masato Yokomizo
  • Patent number: 8710168
    Abstract: The present invention is a polymer having structural units, units of formula I, units of formula II and units of either formula IIIa or formula IIIb: The polymer improves the low-temperature properties of fuel oils from petroleum sources and especially from vegetable or animal sources.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: April 29, 2014
    Assignee: Infineum International Limited
    Inventors: Carl Waterson, Christopher J. Booth
  • Publication number: 20140113847
    Abstract: A lubricating composition including a first base stock component including: one or more metallocene catalyzed polyalphaolefins (mPAOs), each mPAO having a kinematic viscosity (Kv100) from 40 cSt to 155 cSt and a viscosity index (VI) from 150 to 207; a second base stock including one or more polyalphaolefins (PAOs), each PAO having a kinematic viscosity (Kv100) less than 10 cSt and a VI from 130 to 145; and a viscosity modifier including a copolymer having units derived from monomers of (i) an ?-olefin and (ii) an ethylenically unsaturated carboxylic acid or derivatives thereof esterified with an alcohol. A lubricant including the above lubricating composition. A method for improving fuel efficiency, while maintaining or improving wear control, load carrying capacity and/or traction reduction in a driveline device, e.g., gears and transmissions, lubricated with a lubricating oil, by using as the lubricating oil the above lubricant.
    Type: Application
    Filed: September 24, 2013
    Publication date: April 24, 2014
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Willie Allan Givens, Percy Rohinton Kanga, Jared Michael Robillard
  • Publication number: 20130310290
    Abstract: The present invention relates to a copolymer comprising units derived from monomers (i) an ?-olefin and (ii) an ethylenically unsaturated carboxylic acid or derivatives thereof esterified with a primary alcohol branched at the ?- or higher position, wherein the copolymer has a reduced specific viscosity of up to 0.08. The invention further provides for a lubricating composition containing said copolymer. The invention further provides a method and use of controlling viscosity index by supplying to an oil of lubricating viscosity the copolymer with pendant groups. In addition, the copolymer of the present invention may be useful as a base oil replacement.
    Type: Application
    Filed: July 25, 2013
    Publication date: November 21, 2013
    Applicant: The Lubrizol Corporation
    Inventors: David Price, William Barton, Daniel J. Visger
  • Patent number: 8400030
    Abstract: A dispersant additive composition, a lubricant composition containing the dispersant additive, a transmission containing the dispersant additive, and a method of providing a versatile lubricating fluid. The dispersant includes a reaction product of a hydrocarbyl substituted carboxylic acid or anhydride and an amine. The reaction product has a nitrogen content up to 10,000 ppm by weight, and a boron plus phosphorus to nitrogen ((B+P)/N) weight ratio of from 0:1 to about 0.8:1. The dispersant additive composition is effective to provide an electrical conductivity to a lubricant composition containing the dispersant additive composition and a metal detergent of less than about 1700 pS/m.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: March 19, 2013
    Assignee: Afton Chemical Corporation
    Inventors: Hong-Zhi Tang, Mark T. Devlin, Naresh Mathur, Lee D. Saathoff, Timothy J. Henly
  • Publication number: 20120329694
    Abstract: The present invention relates to a lubricating composition containing (a) an oil of lubricating viscosity, (b) a star polymer and (c) a substantially linear polymer with a weight average molecular weight of 45,000 or less. The invention further provides a method of lubricating a mechanical device, typically a manual transmission with the lubricating composition.
    Type: Application
    Filed: November 23, 2010
    Publication date: December 27, 2012
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: Andrew Gelder, David Price, Gareth Brown, Simon Evans
  • Patent number: 8236741
    Abstract: Haze formation in heavy Gas-to-Liquids (GTL) base stock is mitigated by the addition to said GTL base stock of one or more particular additives.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: August 7, 2012
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Marc-André Poirier, Charles Lambert Baker, Jr., Nicholas Anthony Hilder, Chung-Lai Wong, Dorothy Wong, legal representative, James William Gleeson, Vera Minak-Bernero
  • Patent number: 7942941
    Abstract: The present invention generally relates to oil compositions, primarily to fuel oil and petroleum compositions produced there from susceptible to wax formation at low temperatures, to polymeric amides for use with such fuel oil compositions, and to methods for their manufacture.
    Type: Grant
    Filed: April 5, 2005
    Date of Patent: May 17, 2011
    Assignee: Akzo Nobel N.V.
    Inventors: Rodney Lee Cravey, Stephen L. Mead
  • Patent number: 7863390
    Abstract: Esterified polyalkene/UAR copolymer reaction products useful as (1) a friction modifier for lubricating oils such as automatic transmission fluids to improve torque capacity and anti-shudder durability and for continuous variable transmissions (CVTs), (2) a friction modifier for fuels or (3) a cold flow improver for diesel fuels are provided. The esterified copolymer reaction product may be used as is or can be further derivatized (e.g., by post treatment of the esterified copolymer reaction product with, for example, ethylene carbonate or boric acid).
    Type: Grant
    Filed: March 17, 2009
    Date of Patent: January 4, 2011
    Assignee: Chevron Oronise Company LLC
    Inventor: Kenneth D. Nelson
  • Patent number: 7838569
    Abstract: The present invention relates to a method of surface cross-linking superabsorbent polymer particles using UV irradiation. The superabsorbent polymer particles for use in the method of the present invention have a relatively high degree of neutralization. Bronsted acids are selectively applied onto the surface of the superabsorbent polymer particles to selectively facilitate a relatively high number of protonated carboxyl groups at the surface of the superabsorbent polymer particles while the relatively high degree of neutralization in the core of the superabsorbent polymer particles remains substantially unaffected.
    Type: Grant
    Filed: August 22, 2006
    Date of Patent: November 23, 2010
    Assignee: Nippon Shokubai Co., Ltd
    Inventors: Andreas Flohr, Torsten Lindner, Yoshiro Mitsukami
  • Patent number: 7691797
    Abstract: The present invention relates to acrylic block copolymers synthesized by a controlled radical process, and their use as thickeners in oil-based compositions. The acrylic copolymers are especially useful as viscosity index improvers in lubricating oil.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: April 6, 2010
    Assignee: Arkema Inc.
    Inventors: Scott Charles Schmidt, Peter Anthony Callais, Noah Eliot Macy, Olivier Guerrett
  • Patent number: 7618928
    Abstract: An oil-soluble lubricating oil additive composition comprising (I) an oil-soluble lubricating oil additive prepared by the process which comprises reacting a copolymer, with at least one ether compound and with at least one aromatic amine and (II) at least one ashless dispersant other than the lubricating oil additive of (I), the method of making the same, a lubricating oil composition comprising the lubricating oil additive composition and a major amount of an oil of lubricating viscosity, and a method of making the same.
    Type: Grant
    Filed: August 31, 2005
    Date of Patent: November 17, 2009
    Assignee: Chevron Oronite Company LLC
    Inventors: Casey D. Stokes, Willem Van Dam
  • Patent number: 7572361
    Abstract: Lubricant blends and finished gear oils comprising a lubricant base oil fraction derived from highly paraffinic wax, a petroleum derived base oil, and a pour point depressant are provided. The lubricant base oil fraction derived from highly paraffinic wax comprises less than 0.30 weight percent aromatics, greater than 5 weight percent molecules with cycloparaffinic functionality, and a ratio of weight percent of molecules with monocycloparaffinic functionality to weight percent of molecules with multicycloparaffinic functionality greater than 15. The petroleum derived base oils comprises greater than 90 weight percent saturates and less than 300 ppm sulfur and is preferably selected from the group consisting of a Group II base oil, a Group III base oil, and mixtures thereof. These lubricant blends have surprising low Brookfield viscosities at ?40° C.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: August 11, 2009
    Assignee: Chevron U.S.A. Inc.
    Inventors: John M. Rosenbaum, Stephen J. Miller, Joseph M. Pudlak
  • Publication number: 20090186786
    Abstract: Haze formation in heavy Gas-to-Liquids (GTL) base stock is mitigated by the addition to said GTL base stock of one or more particular additives.
    Type: Application
    Filed: November 14, 2008
    Publication date: July 23, 2009
    Inventors: Marc-Andre Poirier, Charles Lambert Baker, JR., Nicholas Anthony Hilder, Dorothy Wong, Chung-Lai Wong, James William Gleeson, Vera Minak-Bernero
  • Publication number: 20090186787
    Abstract: Disclosed are lubricant compounds with a good shear stability defined by the loss of the kinematic viscosity at 100° C., containing base oil and a synthetic complex ester, the complex ester having a kinematic viscosity at 40° C. of greater than 400 and up to 50,000 mm2/s and being obtained by reaction of a) polyols and monocarboxylic acids and dicarboxylic acids, or of b) polyols and mono-alcohols and dicarboxylic acids, or of c) polyols and mono-alcohols and monocarboxylic acids and dicarboxylic acids. In addition the use of said lubricant compounds containing the complex esters as oils for vehicle transmission, axle, industrial drives, compressors, turbines or engines is described.
    Type: Application
    Filed: June 2, 2007
    Publication date: July 23, 2009
    Applicant: Cognis IP Management GmbH
    Inventors: Markus Scherer, Stefan Busch, Jürgen Röder, Rudolf Iking, Dirk Rettemeyer, Vasu Bala
  • Patent number: 7473345
    Abstract: Lubricant blends and finished gear oils comprising a lubricant base oil fraction derived from highly paraffinic wax, a petroleum derived base oil, and a pour point depressant are provided. The lubricant base oil fraction derived from highly paraffinic wax comprises less than 0.30 weight percent aromatics, greater than 5 weight percent molecules with cycloparaffinic functionality, and a ratio of weight percent of molecules with monocycloparaffinic functionality to weight percent of molecules with multicycloparaffinic functionality greater than 15. The petroleum derived base oils comprises greater than 90 weight percent saturates and less than 300 ppm sulfur and is preferably selected from the group consisting of a Group II base oil, a Group III base oil, and mixtures thereof. These lubricant blends have surprising low Brookfield viscosities at ?40° C.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: January 6, 2009
    Assignee: Chevron U.S.A. Inc.
    Inventors: John M. Rosenbaum, Stephen J. Miller, Joseph M. Pudlak
  • Publication number: 20080312117
    Abstract: A copolymer suitable for the use in or as a lubricant, which copolymer includes an ?-olefin and a di-ester of an ?,? ethylenically unsaturated dicarboxylic acid. More particularly, a high molecular weight lubricating oil base fluid or additive includes a copolymer of ?-olefins with chain lengths, for example from 12 to 18 carbon atoms, and a di-ester of an ?,? ethylenically unsaturated dicarboxylic acid, with a C3-C7 alkylic alcohol, for example n-butanol, as an esterifying component, which is compatible with other low polar lubricating oil base fluids.
    Type: Application
    Filed: June 10, 2008
    Publication date: December 18, 2008
    Applicant: ITALMATCH CHEMICALS S.P.A.
    Inventors: Uwe Wallfahrer, Lorenzo Soldavini
  • Patent number: 7384536
    Abstract: Lubricant blends and finished gear oils comprising a Fischer-Tropsch derived lubricant base oil fraction, a petroleum derived base oil, and a pour point depressant are provided. The Fischer-Tropsch derived lubricant base oil fraction comprises less than 0.30 weight percent aromatics, greater than 5 weight percent molecules with cycloparaffinic functionality, and a ratio of weight percent of molecules with monocycloparaffinic functionality to weight percent of molecules with multicycloparaffinic functionality greater than 15. The petroleum derived base oils comprises greater than 90 weight percent saturates and less than 300 ppm sulfur and is preferably selected from the group consisting of a Group II base oil, a Group III base oil, and mixtures thereof. These lubricant blends have surprising low Brookfield viscosities at ?40° C.
    Type: Grant
    Filed: May 19, 2004
    Date of Patent: June 10, 2008
    Assignee: Chevron U.S.A. Inc.
    Inventors: John M. Rosenbaum, Stephen J. Miller, Joseph M. Pudlak
  • Publication number: 20080113889
    Abstract: An oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one ether compound, with at least one aliphatic compound, and with at least one aromatic compound.
    Type: Application
    Filed: October 27, 2006
    Publication date: May 15, 2008
    Inventors: William R. Ruhe, Casey D. Stokes
  • Publication number: 20080103075
    Abstract: An oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one ether compound and with at least one aromatic compound.
    Type: Application
    Filed: October 27, 2006
    Publication date: May 1, 2008
    Inventors: Casey D. Stokes, William R. Ruhe
  • Publication number: 20080103074
    Abstract: An oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one polyether aromatic compound.
    Type: Application
    Filed: October 27, 2006
    Publication date: May 1, 2008
    Inventors: Casey D. Stokes, William R. Ruhe
  • Publication number: 20080103076
    Abstract: An oil-soluble lubricating oil additive composition prepared by the process which comprises reacting a copolymer, with at least one polyether aliphatic amine compound.
    Type: Application
    Filed: October 27, 2006
    Publication date: May 1, 2008
    Inventors: William R. Ruhe, Casey D. Stokes
  • Patent number: 7329635
    Abstract: A crude oil composition wherein fouling has been mitigating and a method for mitigating crude oil fouling. The composition includes crude oil and an improved dispersant material for mitigating fouling which comprises a reaction product of a polyamine and a polyisobutylene succinyl anhydride made with a polyisobutylene having a vinylidene double bond content of at least 50%. The reaction product has an active nitrogen atom content of at least about 2% by weight. The reaction product is prepared by thermally reacting the polyisobutylene with maleic anhydride to produce said polyisobutylene succinyl anhydride and thereafter reacting the polyisobutylene succinyl anhydride with a polyamine having 5 to 7 active nitrogen atoms. The method includes providing the dispersant material and dispersing the same in crude oil.
    Type: Grant
    Filed: December 6, 2006
    Date of Patent: February 12, 2008
    Assignee: Texas Petrochemicals LP
    Inventors: Ghazi B. Dickakian, C. Edward Baxter, Jr., Jeffrey Quoc Truong
  • Publication number: 20080004191
    Abstract: A thermal conductive grease used for diffusion of heat generated in electronic appliances is provided. The thermal conductive grease comprises: (A) a base oil having a viscosity of 112 to 770 mm2 at 40° C. and comprising a copolymer of an unsaturated dicarboxylic acid dibutyl ester and an ?-olefin; and (B) a thermal conductive filler filled in the base oil. The thermal conductive grease does not include conventionally used silicone oil so that insulating substances will not be formed in the thermal conductive grease.
    Type: Application
    Filed: June 29, 2006
    Publication date: January 3, 2008
    Inventor: Tsukasa Ishigaki
  • Patent number: 7256242
    Abstract: Esterified polyalkene/UAR copolymer reaction products useful as (1) a friction modifier for lubricating oils such as automatic transmission fluids to improve torque capacity and anti-shudder durability and for continuous variable transmissions (CVTs), (2) a friction modifier for fuels or (3) a cold flow improver for diesel fuels are provided. The esterified copolymer reaction product may be used as is or can be further derivatized (e.g., by post treatment of the esterified copolymer reaction product with, for example, ethylene carbonate or boric acid).
    Type: Grant
    Filed: June 27, 2003
    Date of Patent: August 14, 2007
    Assignee: Chevron Oronite Company, LLC
    Inventor: Kenneth D. Nelson
  • Patent number: 7189682
    Abstract: A composition of the following components: an oil of lubricating viscosity; a polymethacrylate viscosity modifier; an ester of a maleic acid/styrene copolymer; and optionally, an additive package that imparts to the fluid the capacity to meet bench and dynamometer tests specified by an equipment manufacturer, is suitable for use as a functional fluid such as a tractor hydraulic fluid, under a wide variety of climatic conditions.
    Type: Grant
    Filed: April 4, 2002
    Date of Patent: March 13, 2007
    Assignee: The Lubrizol Corporation
    Inventor: Richard E. Gapinski
  • Patent number: 7018957
    Abstract: Homopolymers and copolymers of an esterified reaction product of an epoxidized mono-hydroxyl alcohol and a free radical polymerizable monomer are highly effective demulsifying agents. The molecular weight of the polymer is between from about 10,000 to about 500,000. The epoxidized mono-hydroxyl alcohol is preferably a reaction product of a C6–C30 linear or branched alcohol and an alkylene oxide. The alkylene oxide is preferably either ethylene oxide, propylene oxide or butylenes oxide or a mixture thereof. The free radical polymerizable monomer is preferably a vinyl aromatic compound or an acrylic or methacrylic based monomer. The polymer preferably comprises a micellar assembly. Such polymers are highly effective in demulsifying crude oils having API gravities of from 8 to 28 or a crude oil having a viscosity between from about 3 to about 10,000 CPS @ at 25° C.
    Type: Grant
    Filed: February 21, 2003
    Date of Patent: March 28, 2006
    Assignee: BJ Services Company
    Inventor: Harold Becker
  • Patent number: 6821933
    Abstract: The invention relates to additives for improving the flowability of mineral oils, containing: A) 1-40 wt. % of at least one copolymer, which is oil-soluble and improves the cold flow properties of mineral oil, selected from A1) copolymers consisting of 80 to 96.5 mol % ethylene and 3.5-20 mol % vinyl esters of carboxylic acids with 1-20 C atoms and/or (meth)acrylic acid esters of alcohols with 1-8 C atoms, and A2) homopolymers or copolymers of esters, containing C10-C30 alkyl radicals, of ethylenically unsaturated carboxylic acids with up to 20 mol % of other olefinically unsaturated compounds, B) 20-80 wt. % of at least one poly-alpha-olefin with a molecular weight of 250-5000, derived from monoolefins with 3-5 C atoms, and C) 5-70 wt.
    Type: Grant
    Filed: December 13, 2002
    Date of Patent: November 23, 2004
    Assignee: Clariant International Ltd.
    Inventors: Michael Feustel, Matthias Krull, Hans-Jörg Oschmann
  • Publication number: 20040110647
    Abstract: A composition of the following components: an oil of lubricating viscosity; a polymethacrylate viscosity modifier; an ester of a maleic acid/styrene copolymer; and optionally, an additive package that imparts to the fluid the capacity to meet bench and dynamometer tests specified by an equipment manufacturer, is suitable for use as a functional fluid such as a tractor hydraulic fluid, under a wide variety of climatic conditions.
    Type: Application
    Filed: September 25, 2003
    Publication date: June 10, 2004
    Inventor: Richard E Gapinski
  • Patent number: 6573224
    Abstract: Improved performance of two-cycle and four-cycle engines is achieved by adding to the oil or fuel of such engines a composition that contains a copolymer of an alpha-olefin and a dialkyl fumarate or maleate and/or a synthetic diester compound that has about 30 carbon atoms. For two-cycle engines, the composition preferably contains both chemicals, in addition to an octane booster such as methylcyclopentadienyl manganese tricarbonyl. For four-cycle engines, the composition contains at least one of the copolymer and diester, in addition to a molybdenum or bismuth salt, dimercapto 1,3,4-thiadiazole and sulfur-phosphorous EP and/or chlorinated paraffin. The composition can also act to improve gear and grease lubrication and provide improved lubricity to fuels.
    Type: Grant
    Filed: August 10, 2001
    Date of Patent: June 3, 2003
    Assignee: Bardahl Manufacturing Corporation
    Inventors: Hugh A. McNeil, Arthur J. Kiehn, Mark Eskridge
  • Publication number: 20030050197
    Abstract: The first lubricating oil composition of the invention comprises a polyol ester (A) as a base oil, a specific amount of a viscosity index improver (B) and a specific amount of an anti-wear agent (C), and the second lubricating oil composition of the invention comprises a paraffinic hydrocarbon oil (F) having at least 30 carbon atoms and a specific amount of a viscosity index improver (B), so that these compositions exert effects that they enable a life of watch battery to last long, they enable a watch to operate in the temperature range of −30 to 80° C. with one kind of a lubricating oil, and they are free from change of properties over a long period of time.
    Type: Application
    Filed: October 9, 2001
    Publication date: March 13, 2003
    Inventor: Yuji Akao
  • Patent number: 6475963
    Abstract: Compositions for improving at least the low temperature flow properties of high viscosity index, high saturates, low sulfur lubricating oils (also known as American Petroleum Institute Group II and Group III oils). The compositions comprise a mixture of lubricating oil flow improvers (LOFIs) that are specified first and second component copolymers of unsaturated dicarboxy esters, including a first component which is a polymer or copolymer of a carboxylate containing pendent ester groups wherein the average side chain carbon number is between 11.0 and 12.4, such as dialkyl fumarate/vinyl acetate copolymer, and a second component which also is a polymer or copolymer such as dialkyl fumarate/vinyl acetate copolymer, but wherein the average side chain carbon number is between 12.7 and 15.0.
    Type: Grant
    Filed: May 1, 2001
    Date of Patent: November 5, 2002
    Assignee: Infineum International Ltd.
    Inventors: Ricardo A. Bloch, David J. Martella
  • Publication number: 20020042348
    Abstract: Improved performance of two-cycle and four-cycle engines is achieved by adding to the oil or fuel of such engines a composition that contains a copolymer of an alpha-olefin and a dialkyl fumarate or maleate and/or a synthetic diester compound that has about 30 carbon atoms. For two-cycle engines, the composition preferably contains both chemicals, in addition to an octane booster such as methylcyclopentadienyl manganese tricarbonyl. For four-cycle engines, the composition contains at least one of the copolymer and diester, in addition to a molybdenum or bismuth salt, dimercapto 1,3,4-thiadiazole and sulfur-phosphorous EP and/or chlorinated paraffin. The composition can also act to improve gear and grease lubrication and provide improved lubricity to fuels.
    Type: Application
    Filed: August 10, 2001
    Publication date: April 11, 2002
    Inventors: Hugh A. McNeil, Arthur J. Kiehn, Mark Eskridge
  • Publication number: 20010025094
    Abstract: Copolymers I carrying functional groups and comprising
    Type: Application
    Filed: May 4, 2001
    Publication date: September 27, 2001
    Applicant: BASF AKTIENGESELLSCHAFT
    Inventors: Wolfgang Gunther, Knut Oppenlander, Walter Denzinger, Heinrich Hartmann, Helmut Mach, Harald Schwahn, Hans Peter Rath
  • Patent number: 6174843
    Abstract: This invention provides a composition and a method of using the composition for dispersing wax and improving the pour point of lubricating oils. The composition comprises an esterified styrene-maleic anhydride copolymer and an esterified alpha-olefin maleic anhydride copolymer.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: January 16, 2001
    Assignee: Nalco Chemical Company
    Inventors: Kim B. Peyton, Sophia L. Wang
  • Patent number: 6127325
    Abstract: A viscosity index improver for addition to lubricating oil or the like, which comprises a graft copolymer having structural units of an oil-soluble polymer (a) comprising an olefin polymer and structural units of a copolymer (b) of a monomer having a peroxide bond with a (meth)acrylate or the like or a copolymer (c) of a monomer having a peroxide bond with 2-hydroxyethyl(meth)acrylate or the like. The improver is excellent in the effect of improving the viscosity index, the thickening effect, the fluidity at low temperatures and the shear stability, and has no fear of causing phase separation in lubricating oil.
    Type: Grant
    Filed: October 5, 1998
    Date of Patent: October 3, 2000
    Assignee: NOF Corporation
    Inventors: Shuji Suyama, Yoshiki Higuchi, Hidefumi Tochigi, Hiroshi Ohmura
  • Patent number: 6025308
    Abstract: A method is disclosed for preparation of amine functionalized copolymers by reacting copolymers of alkyl methacrylate and maleic anhydride with N-phenyl-1,4-phenylenediamine in mineral oil and inert atmosphere at 40 to 75.degree. C. The copolymers are useful viscosity index improvers when incorporated into lubricating oils.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: February 15, 2000
    Assignee: R. T. Vanderbilt Company, Inc.
    Inventors: Hidehiko Matsuya, Thomas J. Karol
  • Patent number: 5965498
    Abstract: A two-cycle oil composition comprising: (a) 10-20% of a first synthetic ester base stock oil (a copolymer of an alpha-olefin with an ester of a dicarboxylic acid, viscosity 20 to 50 cSt at 100.degree. C.); (b) 18-30% of a second synthetic ester base stock oil (an oxo alcohol of a dicarboxylic acid, viscosity 3 to 10 cSt at 100.degree. C.; (c) 30-40% of a polybutene polymer (Mn 300-1500); (d) 15-25% of a nor liquid solvent (boiling point up to 300.degree. C., flash point of 60 .degree.-120.degree. C.); (e) 0.2 to 2.0% of an oil soluble copper compound, and (f) 0 to 5% of other lubricating oil additives.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: October 12, 1999
    Assignee: Exxon Chemical Patents Inc
    Inventor: John Henry Smythe
  • Patent number: 5939365
    Abstract: A lubricant which comprises: a mineral oil basestock which has been dewaxed via catalytic cracking and/or catalytic isomerization; an alkylene-alkylene copolymer; and a lubricating oil flow improver formed from the reaction product of: (a) an unsaturated carboxy ester formed via the esterification of an unsaturated carboxylic acid or its corresponding anhydride with a monohydric aliphatic alcohol having an average carbon number of between about 10 to 18, the unsaturated carboxy ester having the formula: ##STR1## wherein R' is selected from the group consisting of hydrogen and COOR and wherein R is a C.sub.6 to C.sub.22 alkyl group; and (b) a monomer selected from the group consisting of(i) a vinyl ester having the formula: ##STR2## wherein R.sub.1 comprises an alkyl group containing from 1 to 18 carbon atoms;(ii) an olefin having the formula ##STR3## wherein R.sub.1 and R.sub.2 can independently be hydrogen, an alkyl having from 1 to 28 carbon atoms, or a substituted aryl group, provided both R.sub.1 and R.
    Type: Grant
    Filed: December 20, 1996
    Date of Patent: August 17, 1999
    Assignee: Exxon Chemical Patents Inc.
    Inventors: John V. Redpath, Arunas T. Lapinas, David J. Martella, Albert Rossi, William M. Davis
  • Patent number: 5910470
    Abstract: A grease to be sealed in bearings which shows good lubricating properties within a wide temperature range from low to high temperatures, whereby it can prevent bearing noise while it is cold, and maintain its good properties including excellent high-temperature durability for a long period of time. The grease contains a base oil made up of a synthetic hydrocarbon oil and an ester synthetic oil having eight or more ester groups arranged in a comb-like fashion on one side of an oil chain molecule made up of eight of more carbon atoms, as expressed by Formula below, the ratio of contents in weight of the synthetic hydrocarbon oil and the ester synthetic oil being 0.65-0.75:0.35-0.25, and 5-20 wt % of a urea thickening agent. The grease may further contain 0.1-10 wt % dithiophosphate as an extreme pressure agent. The grease may be used as grease to be sealed in a ball bearing for supporting a pulley engaging belts for transmitting automotive engine torque to prevent noise immediately after the engine is started.
    Type: Grant
    Filed: January 29, 1997
    Date of Patent: June 8, 1999
    Assignee: NTN Corporation
    Inventors: Masami Minami, Takao Yoshimatsu, Hiroki Iwamatsu, Takahiro Koremoto
  • Patent number: 5798054
    Abstract: A lubricant and combination lubricant and refrigerant composition for use in a refrigerating machine in which a substitute freon refrigerant, which lubricant contains a polymer of a fumaric ester or a fumaric ester and a copolymerizable alkylene, and optionally contains an organic carboxylic ester or a polyalkylene glycol with a kinematic viscosity of 2 to 30 cSt. The lubricant is compatible with substitute freon refrigerants such as hydrogen-containing halogenated hydrocarbons, particularly R 134a, in a wide temperature range, has a high viscosity index, is thermally and chemically stable, and has an excellent lubricity.
    Type: Grant
    Filed: September 30, 1996
    Date of Patent: August 25, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Takehisa Sato, Hironari Ueda, Toshiaki Kuribayashi, Satoshi Asano, Tadashi Niwa, Hiroshi Ueno, Takeaki Fujii, Sadakatsu Suzuki
  • Patent number: 5747596
    Abstract: Gel-free dispersant additives for lubricating and fuel oil compositions comprise at least one adduct of (A) .alpha.-olefin homopolymer or interpolymer of 700 to 10,000 number average molecular weight, free radically grafted with an average of from about 0.
    Type: Grant
    Filed: August 5, 1996
    Date of Patent: May 5, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Jacob Emert, Robert Dean Lundberg, David John Lohse
  • Patent number: 5716915
    Abstract: Additives having certain hydrocarbyl groups improve the low temperature properties of hydrocarbon oils.
    Type: Grant
    Filed: October 3, 1996
    Date of Patent: February 10, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Gerald Ivan Brown, Lain More, Robert Dryden Tack, Brian William Davies, Derek A. Towe
  • Patent number: 5703023
    Abstract: Lubricants having a Brookfield viscosity at -40.degree. C. equal to or below 20,000 cP (preferably 15,000 or less) are formed from blends composed of a major amount of mineral oil in the range of about 90N to about 140N; and minor amounts of poly-.alpha.-olefin oligomer (PAO) formed from 1-alkene of 6 to 20 carbon atoms and having a kinematic viscosity of about 2 cSt at 100.degree. C.; and vinylaromatic-maleic ester polymeric viscosity index improver. Synergistic low temperature viscometric properties are exhibited by typical compositions of this type.
    Type: Grant
    Filed: November 21, 1995
    Date of Patent: December 30, 1997
    Assignee: Ethyl Corporation
    Inventor: Sanjay Srinivasan
  • Patent number: 5641734
    Abstract: A lubricant composition is described which is useful as a chain bar lubricant for chain saws. The composition comprises(A) at least one triglyceride wherein the ratio of the oleic acid moiety:linoleic acid moiety is from about 2 up to about 90,(B) at least one viscosity modifying additive, and(C) at least one tackifier.Optionally, the composition may also contain(D) at least one pour point depressant and(E) at least one antiwear agent.
    Type: Grant
    Filed: July 20, 1995
    Date of Patent: June 24, 1997
    Assignee: The Lubrizol Corporation
    Inventor: Paul C. Naegely
  • Patent number: 5578237
    Abstract: Gel-free dispersant additives for lubricating and fuel oil compositions comprise at least one adduct of (A) .alpha.-olefin homopolymer or interpolymer of 700 to 10,000 number average molecular weight, free radically grafted with an average of from about 0.
    Type: Grant
    Filed: November 10, 1994
    Date of Patent: November 26, 1996
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Jacob Emert, Robert D. Lundberg, David J. Lohse
  • Patent number: 5574100
    Abstract: A polymer composition comprising [A] a polymer selected from a copolymer of .alpha.-olefin having at least 2 carbon atoms and a specific cyclic olefin, a ring-opening polymer of said specific cyclic olefin and a hydroganted, ring-opening polymer thereof and [B] a core-shell elastomer containing 40 to 85 parts of weight of a core component which comprises a styrene-butadiene copolymer and 15 to 60 parts by weight of a shell component which comprises a copolymer of an acrylate or methacrylate having a specific cyclic structure, a monovinyl aromatic monomer, other monovinyl monomer and a plyfunctional monomer. This polymer composition is excellent in transparency and impact resistance.
    Type: Grant
    Filed: March 9, 1995
    Date of Patent: November 12, 1996
    Assignees: Mitsui Petrochemical Industries, Ltd., Hoechst Aktiengesellschaft
    Inventors: Toshihiro Sagane, Masayuki Okabe, Masahiro Kishine