Additional Nitrogen Bonded Directly To The -c(=x)- Group (e.g., Ueas, Etc.) Patents (Class 508/552)
  • Patent number: 10808200
    Abstract: A liquid composition which has an excellent coating property at room temperature and is retained on a surface to be coated after application on the surface, and a terminal-fitted electric wire having an increased corrosion resistance using the same. The liquid composition contains a high-consistency material, a low-viscosity liquid having a kinetic viscosity of 100 mm2/s or lower measured at 40° C. in accordance with JIS K2283, and an adduct containing an acidic phosphate ester containing one or more kinds of compounds represented by General Formulae (1) and (2), and a metal, P(?O)(—OR1)(—OH)2??(1), P(?O)(—OR1)2(—OH)??(2), where R1 represents a hydrocarbon group having 4 to 30 carbon atoms.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: October 20, 2020
    Assignees: AUTONETWORKS TECHNOLOGIES, LTD., KYUSHU UNIVERSITY
    Inventors: Kazuo Nakashima, Takehiro Hosokawa, Tatsuya Hase, Hironobu Rachi, Hiroki Hirai, Junichi Ono, Takuji Ootsuka, Hideki Nomura, Makoto Mizoguchi
  • Patent number: 10240103
    Abstract: A bearing grease composition contains a (A) thickener and a (B) base oil, in which the (A) thickener is a urea thickener represented by a formula (I) below, and, in observation of a transmission image in the bearing grease composition, a transmission-image-area ratio of an aggregation part having a transmission image area exceeding 40 ?m2 in the urea thickener is 15% or less relative to a total observation area. R1NHCONHR2NHCONHR3??(I) In the formula, R1 and R3 each independently represent: an (a1) monovalent chain hydrocarbon group having 6 to 22 carbon atoms; an (a2) monovalent alicyclic hydrocarbon group having 6 to 12 carbon atoms; and the like, and R2 represents an (a4) divalent aromatic hydrocarbon group having 6 to 15 carbon atoms.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: March 26, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventors: Kouji Takane, Yukitoshi Fujinami, Hiroki Sekiguchi, Yusuke Nakanishi, Yoshiyuki Suetsugu
  • Patent number: 10041540
    Abstract: A grease composition which is excellent in seizure resistance can be provided without deteriorating resistance to stirring in the rolling device, and a rolling device in which the grease composition intervenes to a predetermined portion can be also provided by use of a grease composition comprising a base oil and a thickener, the thickener being a diurea compound obtained by allowing an amine mixture comprising alkylphenylamine, an alkyl group of which has 8 to 16 carbon atoms, and cyclohexylamine, to react with a diisocyanate compound, the amount of cyclohexylamine in the amine mixture being 80% by mole or more and less than 91% by mole, and a worked penetration being 300 to 330.
    Type: Grant
    Filed: March 22, 2013
    Date of Patent: August 7, 2018
    Assignees: JTEKT CORPORATION, NIPPON GREASE CO., LTD.
    Inventors: Koji Yoshizaki, Kensuke Suzuki, Hiroki Iwamatsu, Masashi Mitsuoka
  • Patent number: 9458401
    Abstract: The use of substituted diureas, polyureas, bisurethanes or polyurethanes of the formula R1X—CO—NR3R4 in which X is R2N or O and R1 to R4 are each independently hydrogen, alkyl radicals, alkenyl radicals, cycloalkyl radicals, aryl radicals or arylalkyl radicals, where at least one variable must be a radical having at least 4 carbon atoms and where the urea or urethane functionality must be replicated via bridging members, for improvement of the use properties of mineral and synthetic nonaqueous industrial fluids.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: October 4, 2016
    Assignee: BASF SE
    Inventors: Jan Strittmatter, Karl Haeberle, Wolfgang Grabarse, Ivette Garcia Castro, Markus Hansch, Irene Troetsch-Schaller, Stephan Schenk, Michael Schroers, Bernhard Lange
  • Patent number: 9102795
    Abstract: A method for providing urea particles in a solvent medium, said method comprising at least the steps of: providing at least one polyisocyanate component dissolved in a first solvent; providing at least one isocyanate-reactive polyamine component dissolved in a second solvent; providing at least one isocyanate-reactive monoamine, optionally dissolved in a third solvent; combining and reacting said isocyanate-reactive monoamine optionally dissolved in said third solvent with said polyisocyanate dissolved in said first solvent, thereby providing an urea-modified polyisocyanate dissolved in said first solvent and said optionally third solvent, and then combining and reacting said urea-modified polyisocyanate dissolved in said first solvent and said optionally third solvent with said polyamine component dissolved in said second solvent.
    Type: Grant
    Filed: December 15, 2011
    Date of Patent: August 11, 2015
    Assignee: Huntsman International LLC
    Inventors: Steve Andre Woutters, Chris Ian Lindsay
  • Publication number: 20150147477
    Abstract: A two-component grease package for lubricating a mechanism, wherein the grease package includes a first component comprising a thickener, and a second component comprising a fluid lubricant, whereby the two-component grease is obtained by mixing together the first and the second component.
    Type: Application
    Filed: December 17, 2012
    Publication date: May 28, 2015
    Inventors: Ingemar Strandell, Frank Fiddelaers
  • Publication number: 20150045273
    Abstract: A grease of the invention includes: a base oil containing hydrocarbon; and diurea that is represented by a formula (1) below as a thickener and is in a range from 15 mass % to 25 mass % based on a total amount of a composition, the grease exhibiting a worked penetration in a range from 170 to 295. R1NHCONHR2NHCONHR3 ??(1) In the formula, R1 and R3 are mutually different and represent a hydrocarbon group having 6 to 18 carbon atoms; and R2 is a divalent aromatic hydrocarbon group having 6 to 13 carbon atoms.
    Type: Application
    Filed: February 19, 2013
    Publication date: February 12, 2015
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Hiroki Sekiguchi, Kentaro Koumura, Yoshiyuki Suetsugu, Yusuke Nakanishi, Yukitoshi Fujinami
  • Patent number: 8951945
    Abstract: There is provided a rolling bearing which inhibits spalling of a rolling element and has a long service life even under rigorous environments. The rolling bearing comprises grease for lubricating rolling contact parts and/or sliding contact parts between a first raceway surface and a rolling elements and/or between a second raceway surface and a rolling elements, wherein the grease comprises a base oil, a thickener and an extreme pressure additive, the thickener is a diurea compound obtained by allowing an amine mixture comprising alkylphenylamine, alkyl group of which has 8 to 16 carbon atoms, and cyclohexylamine, to react with a diisocyanate compound, an amount of cyclohexylamine in the total amount of the alkylphenylamine and cyclohexylamine is from 91 to 99% by mole, and a reaction temperature of the extreme pressure additive with iron is 260° C. or lower.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: February 10, 2015
    Assignees: JTEKT Corporation, Nippon Grease Co., Ltd.
    Inventors: Koji Yoshizaki, Kunihiro Yamaguchi, Komatsugu Nishimura, Michiru Ueda, Hiroki Iwamatsu, Masashi Mitsuoka
  • Patent number: 8927470
    Abstract: The invention provides for a process and apparatus for preparing a soap concentrate, including: (a) introducing feed components to a first feeding zone; (b) first reacting in a first reacting zone; (c) first venting in a first venting zone; and (d) cooling in a cooling zone. The process may further include, after (c) and before (d): (i) continued reacting in a continued reacting zone; and (ii) second venting in a second venting zone. The invention also provides for a process and apparatus for preparing a lubricating composition comprising: (aa) introducing a soap concentrate and a base oil to a lubricating composition feeding zone; (bb) dispersing the soap concentrate in a lubricating composition dispersing zone; (cc) mixing the soap concentrate and the base oil in a lubricating composition mixing zone; and (dd) cooling in a lubricating composition cooling zone.
    Type: Grant
    Filed: May 29, 2007
    Date of Patent: January 6, 2015
    Assignee: Shell Oil Company
    Inventors: Jean-Luc Pierre André Brossaud, David Edmund Code, Jerome Dabos, Jean-Claude Emile Maximilien Holley, Aimin Huang, Krishna Rangraj Kaushik, Catherine Maillard, Raghunath Gopal Menon, Jean-Paul Saint, Rainer Hans Schade
  • Patent number: 8895489
    Abstract: The invention provides a grease composition for hub unit bearing, containing (a) an aromatic diurea thickener, (b) a base oil, (c) a metal salt of oxidized wax, (d) diphenyl hydrogen phosphate, and (e) at least one rust preventive selected from the group consisting of sulfonate rust preventives and carboxylic acid rust preventives. The grease composition of the invention shows excellent anti-fretting properties at low temperature, and at the same time, exhibit excellent rust preventing properties.
    Type: Grant
    Filed: September 2, 2011
    Date of Patent: November 25, 2014
    Assignees: Kyodo Yushi Co., Ltd., NTN Corporation
    Inventors: Takashi Azuma, Yoshihisa Imamoto, Motohiro Ito, Yasushi Shibata
  • Patent number: 8859475
    Abstract: The invention provides a grease composition for bearings used in wind power generators, containing a base oil which has a kinematic viscosity of 10 to 70 mm2/s at 40° C. and a pour point of ?40° C. or less, and a diurea compound as a thickener, for example, a diurea compound represented by formula (1) where R1 and R2 are both C8-alkyl group. The grease composition for bearings used in wind power generators according to the invention can meet the requirements in terms of the seizure life and the pumpability as well as the fatigue life (flaking life).
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: October 14, 2014
    Assignee: Kyodo Yushi Co., Ltd.
    Inventors: Minoru Namiki, Daming Dong, Terasu Yoshinari
  • Patent number: 8822394
    Abstract: Use of a lubricating grease composition in a mass flywheel application wherein the lubricating grease composition comprises: (i) a base oil having a density in the range of from 800 to 1000 Kg/m3; and (ii) a urea compound having a density in the range of from 850 to 1050 Kg/m3; wherein the difference in the densities of the base oil (i) and the urea compound (ii) is less than 50 Kg/m3. The lubricating grease compositions according to the present invention are particularly useful for reducing oil bleeding and for improving shear stability properties in a dual mass flywheel application.
    Type: Grant
    Filed: August 18, 2010
    Date of Patent: September 2, 2014
    Assignee: Shell Oil Company
    Inventor: Stefan Daegling
  • Publication number: 20140199009
    Abstract: The present invention relates to: a grease composition that includes a base oil which has a pressure-viscosity coefficient as measured at 40° C. of 33 GPa?1 or less and a thickener which is contained in a projected-area proportion of 10% by area or higher; and a rolling device packed with the grease composition.
    Type: Application
    Filed: August 24, 2012
    Publication date: July 17, 2014
    Applicant: NSK LTD.
    Inventors: Noriyuki Inami, Atsushi Yokouchi, Michita Hokao, Shinya Nakatani, Haruka Kanda, Kazuhiro Soga, Takayuki Miyagawa
  • Publication number: 20140179579
    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: Application
    Filed: December 21, 2012
    Publication date: June 26, 2014
    Applicant: AFTON CHEMICAL CORPORATION
    Inventors: Jeremy P. Styer, John T. Loper
  • Patent number: 8754016
    Abstract: The lubricating base oil of the invention is characterized by having an urea adduct value of not greater than 4% by mass and a viscosity index of 100 or greater. The process for production of a lubricating base oil according to the invention is characterized by comprising a step of hydrocracking/hydroisomerization of a stock oil containing normal paraffins, until the obtained treatment product has an urea adduct value of not greater than 4% by mass and a viscosity index of 100 or greater. A lubricating oil composition according to the invention is characterized by comprising the lubricating base oil of the invention.
    Type: Grant
    Filed: March 25, 2008
    Date of Patent: June 17, 2014
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Kazuo Tagawa, Shinichi Shirahama, Masahiro Taguchi
  • Patent number: 8741823
    Abstract: There is provided a grease composition, in which a grease film on the surface of the applied part is made thicker compared with conventional grease compositions, this thickness is maintained for a long period of time, and as a result, a longer service life against seizure compared with conventional grease compositions is assured. The grease composition comprises a base oil and a thickener, wherein the thickener is a diurea compound obtained by allowing an amine mixture comprising alkylphenylamine, an alkyl group of which has 8 to 16 carbon atoms, and cyclohexylamine, to react with a diisocyanate compound, and an amount of cyclohexylamine in the total amount of the alkylphenylamine and cyclohexylamine is from 91 to 99% by mole.
    Type: Grant
    Filed: April 12, 2012
    Date of Patent: June 3, 2014
    Assignee: Nippon Grease Co., Ltd.
    Inventors: Hiroki Iwamatsu, Masashi Mitsuoka
  • Patent number: 8728992
    Abstract: The invention provides a grease composition containing a thickener, a base oil and an antistatic agent, where the antistatic agent includes at least one selected from the group consisting of Li(CF3SO2)2N and Li(CF3SO2)3C; and a mechanical part where the above-mentioned grease composition is packed. The composition of the invention shows satisfactory results in the antistatic properties and the acoustic property.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: May 20, 2014
    Assignee: Kyodo Yushi Co. Ltd.
    Inventors: Masamichi Yamamoto, Yutaka Imai, Jun-ichi Imai
  • Publication number: 20140128300
    Abstract: The invention provides a lubricating grease composition containing the following components (a) and (b): (a) an ionic liquid having as an anion bis(trifluoromethylsulfonyl)imide; and (b) as a thickener a diurea compound of formula (1): R1NH-CO-NH-R2-NH-CO-NH-R3 (1) wherein R2 is an aromatic hydrocarbon group having 6 to 15 carbon atoms; and R1 and R3, which may be the same or different are each an aromatic hydrocarbon group having 6 to 12 carbon atoms, an alicyclic hydrocarbon group having 6 to 12 carbon atoms or a straight-chain alkyl group having 8 to 20 carbon atoms, with the groups represented by R1 and R3 containing the aromatic hydrocarbon group in an amount of 50 to 100 mol %. The lubricating grease composition of the invention can favorably be used under ultra-high vacuum, and under high temperatures of 200 to 300° C.
    Type: Application
    Filed: July 23, 2012
    Publication date: May 8, 2014
    Applicant: KYODO YUSHI CO., LTD.
    Inventors: Makoto Hayama, Setsuo Sasaki
  • Patent number: 8703671
    Abstract: The invention provides for a process for preparing a urea grease including: (a) introducing a first feed component to a first feeding zone; (b) introducing a second feed component to a second feeding zone; (c) first reacting-mixing in a first reacting-mixing zone; and (d) cooling-mixing in a cooling-mixing zone. The invention also provides for a process for preparing a urea grease including: (a) introducing a first feed component to a first feeding zone; (b) introducing a second feed component to a second feeding zone; (c) first reacting-mixing in a first reacting-mixing zone; (d) introducing a third feed component to a third feeding zone; (e) second reacting-mixing in a second reacting-mixing zone; and (f) cooling-mixing in a cooling-mixing zone. The invention also provides for an apparatus for preparing a urea grease comprising: (a) a first feeding zone; (b) a second feeding zone; (c) a first reacting-mixing zone; and (d) a cooling-mixing zone.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: April 22, 2014
    Assignee: Shell Oil Company
    Inventors: Jean-luc Pierre André Brossaud, David Edmund Code, Jerome Dabos, Ronald David Harris, Charles Montgomery Harris, Aimin Huang, Krishna Rangraj Kaushik, Catherine Maillard, Howard Brian Mead, Raghunath Gopal Menon, Jean-paul Saint
  • Patent number: 8703678
    Abstract: A grease which comprises a base oil containing at least 50% by mass of a diester compound having a total carbon number of 28 to 40 and represented by the general formula (I): R1OOC—(R2)n—COOR3??(I) wherein R1 and R3 each independently represent a C4 to C20 monovalent aliphatic hydrocarbon group, R2 represents a C1 to C20 divalent hydrocarbon group and n is 0 or 1. The grease is excellent in both low-temperature performance and high-temperature performance and has low oil separation tendency even under high centrifugal force (acceleration). In particular, when the grease is used in a rotational transmission device having a built-in one-way clutch, the grease can provide satisfactory clutch engagement property (intermeshing ability) at low temperatures and a prolonged bearing life at high temperatures and is less apt to cause oil separation under high centrifugal force.
    Type: Grant
    Filed: October 5, 2007
    Date of Patent: April 22, 2014
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Yukitoshi Fujinami, Tahei Okada, Shinya Nakatani, Atsushi Yokouchi
  • Publication number: 20140080744
    Abstract: Bearing grease includes an ether base oil and a urea thickener, and is used in an atmosphere of a fluorine compound-based refrigerant. No grease is eluted for a long period in a bearing with use of the bearing grease. Moreover, since a collection system is unnecessary unlike a lubricating oil, the surroundings of the bearing can be made compact. Accordingly, the bearing with use of the bearing grease is easily applicable to automobiles and a variety of industrial machinery as an energy collection apparatus using the Rankine cycle.
    Type: Application
    Filed: December 27, 2011
    Publication date: March 20, 2014
    Inventors: Yukitoshi Fujinami, Fumihiko Yokoyama
  • Patent number: 8618028
    Abstract: Fire resistant lubricating grease compositions resistant to self ignition and/or capable of self extinguishment when contacted with surfaces having temperatures of up to 900° C. are disclosed. The invention provides for grease compositions comprising (1) base oil (which can be mineral, vegetable, synthetic or combinations thereof), (2) at least one grease thickener (selected from calcium sulfonates or lithium-based soaps), and (3) water as major components. The invention also provides a method for the preparation of the grease composition and a method for lubrication of bearings, gears, surfaces and other lubricated components comprising use of the grease composition of the present invention. The grease compositions of this invention display excellent fire resistance properties and still have outstanding physical and performance characteristics for applications where temperatures and loads are high, shock loading is significant and in the presence of significant amounts of water.
    Type: Grant
    Filed: June 1, 2009
    Date of Patent: December 31, 2013
    Assignee: Castrol Limited
    Inventors: Hocine Faci, Robert N. Cisler, Alex M. Medrano
  • Patent number: 8609598
    Abstract: The present invention relates to a nitrite free grease composition having an oil base, a thickener, and several additives, including a metal salt of dibasic acid. The metal salt having sub-groups that can either be aliphatic or aromatic hydrocarbons. Additionally, the present invention relates to a grease-sealed bearing with a longer lifetime and excellent rust preventative properties.
    Type: Grant
    Filed: July 21, 2003
    Date of Patent: December 17, 2013
    Assignee: NTN Corporation
    Inventors: Hidenobu Mikami, Takayuki Kawamura, Mitsunari Asao, Eiichirou Shimazu
  • Publication number: 20130310292
    Abstract: The invention provides a grease composition which contains a base oil and a thickener, where the thickener is a diurea compound represented by formula (1), and the thickener is contained in an amount of 3 to 20 mass % in the grease composition: wherein R2 is diphenylmethane group; and R1 and R3, which may be the same or different represent cyclohexyl group or a straight-chain or branched alkyl group having 8 to 22 carbon atoms, with the ratio of the number of moles of the cyclohexyl group to the total number of moles of the cyclohexyl group and the alkyl group, expressed as [((the number of the cyclohexyl group)/(the number of the cyclohexyl group+the number of the alkyl group))×100] being 70 to 80 mol %.
    Type: Application
    Filed: February 22, 2012
    Publication date: November 21, 2013
    Applicant: KYODO YUSHI CO., LTD.
    Inventors: Masamichi Yamamoto, Yuta Sato
  • Patent number: 8507421
    Abstract: A process includes adding an effective amount of a calcium lignin sulfonate to a thickened base grease to form a lubricating grease wherein the calcium lignin sulfonate has a molecular weight of at least 10,000 g/mol; the calcium lignin sulfonate has a water content of less than about 0.5 wt %; the effective amount is from about 1 wt % to about 20 wt % based upon the weight of the lubricating grease; the thickened base grease is obtained from a grease forming process or a lubricating paste; and the lubricating grease has a water solubility below about 3 wt %, as determined by a water wash out-test.
    Type: Grant
    Filed: January 26, 2011
    Date of Patent: August 13, 2013
    Assignee: Fuchs Lubricants Co.
    Inventor: Nael Naguib Zaki
  • Patent number: 8501671
    Abstract: A process for producing a grease composition which is capable of homogeneously and surely dispersing a non-fluorine-based base oil blended with a thickening agent and a fluorine-based base oil blended with a thickening agent. A mixture of a non-fluorine-based base oil blended with a first thickening agent and a fluorine-based base oil blended with a second thickening agent that are not mutually compatible is homogeneously treated at a shear rate of 150 s?1 or higher to form a morphology structure in which one of the non-fluorine-based base oil and fluorine-based base oil is homogeneously dispersed in a particulate form having a mean particle diameter of not more than 25 ?m in the other base oil.
    Type: Grant
    Filed: December 4, 2009
    Date of Patent: August 6, 2013
    Assignee: NOK Klueber Co., Ltd.
    Inventors: Takeshi Hishinuma, Motoyuki Inai, Toshio Nitta
  • Publication number: 20130146009
    Abstract: An engine lubricating system for an internal combustion engine. The system comprises a vehicle engine; a circulation system for providing a continuing flow of lubricant to the vehicle engine and engine components; and a lubricant disposed within the circulation system. The lubricant comprises a base oil and at least one microencapsulated oil additive. The microencapsulated oil additive is selectively released into the lubricant based one or more localized event. The localized event may include a predetermined temperature change, a predetermined pH change, a localized high friction contact, and combinations thereof.
    Type: Application
    Filed: December 7, 2011
    Publication date: June 13, 2013
    Applicant: GM Global Technology Operations LLC
    Inventors: Thomas C. Pederson, Anil K. Sachdev, Eric W. Schneider
  • Patent number: 8413475
    Abstract: The disclosure relates to a cold rolling fluid, including: (a) a hydrocarbon base including at least 50 wt % of isoparaffins; (b) one or more frictional modifiers selected from among fatty alcohols, fatty acids, fatty amines, fatty acid esters, or polymer esters resulting from the esterification of alpha-olefin copolymers and dicarboxylic acids using alcohols; and (c) one or more phosphorous anti-wear and/or extreme pressure additives. The disclosure also relates to an emulsion containing the rolling fluid and to the use of the rolling fluid for cold-rolling steel.
    Type: Grant
    Filed: July 2, 2010
    Date of Patent: April 9, 2013
    Assignee: Total Raffinage Marketing
    Inventors: Nicole Genet, Frédéric Jarnias
  • Publication number: 20130079266
    Abstract: Provided is a method for preparing a grease composition, which comprises mixing an amine in a lubricating bas oil and an isocyanate in a lubricating base oil under high pressure and high flow rate impingement. In one embodiment, the mixing and reaction occurs in a reaction injection molding device. The resulting grease composition is an extremely low noise grease, being virtually clear of any urea thickener particles.
    Type: Application
    Filed: November 20, 2012
    Publication date: March 28, 2013
    Applicant: CHEVRON U.S.A. INC.
    Inventor: CHEVRON U.S.A. INC.
  • Publication number: 20130012416
    Abstract: Provided are a grease composition which inhibits simultaneously a bearing wear and a fretting wear under a high load to make it possible to elongate a life of the bearing; a grease composition which can inhibit a fretting wear caused by a change in a load in a thrust direction in addition to an usual fretting wear caused by small vibration in an oscillating direction; and a grease composition which is excellent in low-temperature characteristics. The grease compositions contain a base oil and a thickener, wherein the base oil contains a poly-?-olefin (component A) which has a kinetic viscosity of 300 mm2/s or more at 40° C. and which is produced by using a metallocene catalyst.
    Type: Application
    Filed: March 25, 2011
    Publication date: January 10, 2013
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Yukitoshi Fujinami, Tahei Okada, Takuya Ono
  • Patent number: 8334241
    Abstract: A grease-sealed rolling bearing with a rotary outer race is provided of which the lubricating grease has a long life, and which produces less cold-time noise and can effectively prevent leakage of grease. In an outer-race-rotating type of rolling bearing A for use e.g. as a pulley bearing, lubricating grease G is sealed which contains a base oil having a dynamic viscosity at 40° C. of 13 to 73 cSt and which is thickened with a thickening agent of urea family so that the grease is present in an amount of not less than 20% of the entire spatial volume of the interior of the rolling bearing, and not more than 80% of the stationary spatial volume of the interior of the rolling bearing.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: December 18, 2012
    Assignee: NTN Corporation
    Inventor: Kenta Sakaguchi
  • Publication number: 20120277135
    Abstract: A lubricating oil composition includes an antibacterial composition, a corrosion preventive, petroleum naphtha, optionally a solvent, and the balance being an oil. The lubricating oil composition may also include acetone. A process for lubricating an object includes the steps of: providing a lubricating oil composition comprising an antibacterial composition, a corrosion preventive, petroleum naphtha, optionally a solvent, optionally acetone, and the balance being an oil; and applying the lubricating oil composition to a surface of the object.
    Type: Application
    Filed: July 11, 2012
    Publication date: November 1, 2012
    Applicant: LIQUIFIX
    Inventor: D. Matthew Lacerenza
  • Publication number: 20120270762
    Abstract: There is provided a grease composition, in which a grease film on the surface of the applied part is made thicker compared with conventional grease compositions, this thickness is maintained for a long period of time, and as a result, a longer service life against seizure compared with conventional grease compositions is assured. The grease composition comprises a base oil and a thickener, wherein the thickener is a diurea compound obtained by allowing an amine mixture comprising alkylphenylamine, an alkyl group of which has 8 to 16 carbon atoms, and cyclohexylamine, to react with a diisocyanate compound, and an amount of cyclohexylamine in the total amount of the alkylphenylamine and cyclohexylamine is from 91 to 99% by mole.
    Type: Application
    Filed: April 12, 2012
    Publication date: October 25, 2012
    Applicant: NIPPON GREASE CO., LTD.
    Inventors: Hiroki IWAMATSU, Masashi Mitsuoka
  • Patent number: 8242063
    Abstract: A lubricating grease composition comprising base oil and a blended thickener which comprises, as the thickener constituents, (a) one or more urea-type compounds; (b) one or more fatty acid metal salts; and (c) at least one type of amide compound selected from the group comprised of aliphatic amides and aliphatic bisamides shown by the general formulae (1) and (2): R1CONH2??(1) R1CONHR2NHCOR1??(2) wherein R1 denotes a saturated or unsaturated alkyl group having from 15 to 17 carbon atoms and R2 denotes a methylene group or an ethylene group and wherein the blending weight proportions of (a), (b) and (c) are in the ratio of a/(b+c) is in the range of from 0.20 to 10 wherein (1) constituent (a) has a blending weight ratio in the range of from 1 to 10; (2) constituent (b) has a blending weight ratio in the range of from 0.5 to 2.5; and (3) constituent (c) has a blending weight ratio in the range of from 0.5 to 2.5.
    Type: Grant
    Filed: April 26, 2006
    Date of Patent: August 14, 2012
    Assignee: Shell Oil Company
    Inventors: Yasushi Kawamura, Toshiki Satou, Keiji Tanaka
  • Publication number: 20120196781
    Abstract: The invention provides a grease composition for bearings used in wind power generators, containing a base oil which has a kinematic viscosity of 10 to 70 mm2/s at 40° C. and a pour point of ?40° C. or less, and a diurea compound as a thickener, for example, a diurea compound represented by formula (1) where R1 and R2 are both C8-alkyl group. The grease composition for bearings used in wind power generators according to the invention can meet the requirements in terms of the seizure life and the pumpability as well as the fatigue life (flaking life).
    Type: Application
    Filed: October 15, 2010
    Publication date: August 2, 2012
    Applicant: Kyodo Yushi Co., Ltd.
    Inventors: Minoru Namiki, Daming Dong, Terasu Yoshinari
  • Publication number: 20120190602
    Abstract: Use of a lubricating grease composition in a mass flywheel application wherein the lubricating grease composition comprises: (i) a base oil having a density in the range of from 800 to 1000 Kg/m3; and (ii) a urea compound having a density in the range of from 850 to 1050 Kg/m3; wherein the difference in the densities of the base oil (i) and the urea compound (ii) is less than 50 Kg/m3. The lubricating grease compositions according to the present invention are particularly useful for reducing oil bleeding and for improving shear stability properties in a dual mass flywheel application.
    Type: Application
    Filed: August 18, 2010
    Publication date: July 26, 2012
    Inventor: Stefan Daegling
  • Patent number: 8193133
    Abstract: Polyurea compounds are prepared by reacting amines and polyisoyanates in the presence of a liquid diluent in a high-pressure impingement mixing device under conditions sufficient to produce polyurea compounds having the consistency of a powder and in which diluent is dispersed.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: June 5, 2012
    Assignee: ExxonMobil Research and Engineering Company
    Inventor: Mark W. Baum
  • Patent number: 8183191
    Abstract: A grease composition containing a lubricant base oil, diurea compounds represented by the following general formulas (1) to (3), and at least one species selected from the group consisting of paraffin oxides and phosphorus compounds; wherein respective contents of the diurea compounds represented by the following general formulas (1) to (3) satisfy conditions defined by the following expressions (4) and (5); and wherein the total content of the paraffin oxides and phosphorus compounds is 0.1 to 15 mass % based on the total amount of the grease composition: where R1 is a hydrocarbon group containing an aromatic ring, R2 is a divalent hydrocarbon group, and R3 is a hydrocarbon group containing an aliphatic ring; 5?W1+W2+W3?30??(4) 0.3?(W1+0.5×W2)/(W1+W2+W3)?0.7??(5) where W1, W2, and W3 are respective contents (mass %) of the diurea compounds represented by general formulas (1) to (3) based on the total amount of the grease composition.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: May 22, 2012
    Assignee: Nippon Oil Corporation
    Inventors: Hirotsugu Kinoshita, Souichi Nomura, Takashi Arai, Kiyomi Sakamoto
  • Patent number: 8153568
    Abstract: The present invention provides water-resistant grease which improves the resistance to peeling which occurs from the surface of a bearing composed of carbon steel for machine structural use or the like even in a strict lubricating condition in which water may penetrate into the water-resistant grease during the operation of the bearing, and a rolling bearing and a hub bearing which use the water-resistant grease and have a long life. The water-resistant grease is composed of non-water-based base oil, a thickener, and a water dispersant used as an additive. The saturated amount of water dispersible in the water-resistant grease is 30 to 60 wt %. The water dispersant capable of dispersing the water in the water-resistant grease is a surface active agent. The non-water-based base oil is mineral oil. The thickener is a urea-based compound. The present invention also provides a rolling bearing and a hub bearing in which the water-resistant grease is enclosed.
    Type: Grant
    Filed: September 28, 2006
    Date of Patent: April 10, 2012
    Assignee: NTN Corporation
    Inventors: Yoji Sato, Masaki Egami
  • Publication number: 20110306429
    Abstract: The present invention provides a grease composition or a lubricating oil composition which is capable of effectively preventing hydrogen brittleness-caused peeling from occurring on a rolling surface of a rolling bearing, is excellent in durability in a high temperature and speed operation, and can be used for a long time. A grease-packed bearing (1) has an inner ring (2), an outer ring (3), and a plurality of rolling elements (4). A sealing member (6) for sealing a grease composition (7) is provided at openings (8a) and (8b) disposed at both axial ends of the inner ring (2) and the outer ring (3). The grease composition (7) includes a base grease composed of a base oil and a thickener and an additive added to the base grease. The additive contains at least one compound selected from among plant-derived polyphenolic compounds and compounds formed by decomposition thereof.
    Type: Application
    Filed: February 24, 2010
    Publication date: December 15, 2011
    Applicant: NTE CORPORATION
    Inventors: Hidenobu Mikami, Yosuke Taguchi
  • Patent number: 8058216
    Abstract: The present invention provides a grease composition capable of securely preventing an abnormal noise from being generated when it is cold and having a long life at a high temperature, and a rolling bearing in which this grease is enclosed. The grease composition having heat-resistant properties and performance of preventing the generation of a low-temperature abnormal noise contains a base oil, a thickener, and an additive, and is used for a rolling bearing. A worked penetration of the grease composition at 25° C. is 300 or less, and an unworked penetration thereof at ?20° C. is 200 or more. The grease-enclosed rolling bearing has an inner ring, an outer ring, rolling elements interposed between the inner ring and the outer ring, and the above-described grease composition enclosed on a periphery of the rolling elements. The grease-enclosed rolling bearing is used for an automotive electric auxiliary machine.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: November 15, 2011
    Assignee: NTN Corporation
    Inventor: Takayuki Kawamura
  • Patent number: 8044005
    Abstract: A rolling bearing, for use in household appliances, having a high degree of quietness, an excellent durability at high temperatures and rotational speeds, a low torque, and excellent fretting property; and a lubricant composition which can be sealed into the rolling bearing. The lubricant composition includes a base oil and a thickening agent. The base oil is a mixed oil having the following characteristics of (a) to (c): (a) The base oil consists essentially of a synthetic hydrocarbon oil and an ester oil; (b) A kinematic viscosity of the mixed oil at 40° C. is 40 to 70 mm2/second; (c) A mixing weight ratio between the ester oil of the mixed oil and the synthetic hydrocarbon oil thereof is 30:70 to 70:30. The thickening agent comprises a diurea compound shown by a formula (1): where R1 and R3 are a straight-chain alkyl groups having 9 to 22 carbon atoms respectively, and R2 is an aromatic hydrocarbon group having 6 to 15 carbon atoms. The lubricant composition is sealed into the rolling bearing.
    Type: Grant
    Filed: May 24, 2004
    Date of Patent: October 25, 2011
    Assignee: NTN Corporation
    Inventors: Hidenobu Mikami, Seiji Okamura, Hiroki Iwamatsu, Masashi Mitsuoka
  • Publication number: 20110207641
    Abstract: Polyurea compounds are prepared by reacting amines and polyisoyanates in the presence of a liquid diluent in a high-pressure impingement mixing device under conditions sufficient to produce polyurea compounds having the consistency of a powder and in which diluent is dispersed.
    Type: Application
    Filed: March 7, 2011
    Publication date: August 25, 2011
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventor: Mark W. Baum
  • Publication number: 20110111995
    Abstract: In this grease composition, a grease produced by mixing at least one base oil selected from a mineral oil-type lubricant base oil, a synthetic lubricant base oil, and a biodegradable lubricant base oil with a thickener is compounded with a wax and water, and an additive such as a surfactant and a defoamer is optionally compounded therewith. A soap containing a calcium sulfonate complex is used as the thickener. A carnauba wax is preferably used as the wax. Since this grease composition is mainly composed of a grease and a wax, the grease composition extremely facilities its removal operation after application, is environmentally friendly, and has extremely excellent anti-corrosion performance. When the grease composition is used by being applied to a base material of an object to be welded, an effect of preventing the adhesion of welding spatters can be obtained.
    Type: Application
    Filed: October 27, 2008
    Publication date: May 12, 2011
    Applicant: HITACHI CONSTRUCTION MACHINERY CO., LTD.
    Inventors: Hideki Akita, Shigeyuki Sakurai, Osamu Gokita, Shinichi Sekido, Masafumi Senzaki, Yasuchika Nagai, Mitsuhiro Yamamoto, Tooru Nakajima, Mitsuru Komachi, Hiroshi Nishimura, Jun Araki
  • Patent number: 7923421
    Abstract: Polyurea compounds are prepared by reacting amines and polyisoyanates in the presence of a liquid diluent in a high-pressure impingement mixing device under conditions sufficient to produce polyurea compounds having the consistency of a powder and in which diluent is dispersed.
    Type: Grant
    Filed: January 23, 2007
    Date of Patent: April 12, 2011
    Assignee: ExxonMobil Research and Engineering Company
    Inventor: Mark W. Baum
  • Patent number: 7910526
    Abstract: The present invention provides a grease composition for use in constant velocity joints, which comprises the following components (a) to (g) and a constant velocity joint comprising the grease composition sealed or encapsulated therein: (a) a base oil; (b) a diurea thickener represented by the following general formula: R1NH—CO—NH—C6H4-p-CH2—C6H4-p-NH—CO—NHR2 wherein R1 and R2 each independently represents an alkyl group having 8 to 20 carbon atoms, an aryl group having 6 to 12 carbon atoms or a cycloalkyl group having 6 to 12 carbon atoms; (c) a molybdenum dialkyl dithiocarbamate insoluble in the base oil; (d) a molybdenum dialkyl dithiocarbamate soluble in the base oil; (e) molybdenum disulfide; (f) at least one member selected from the group consisting of calcium phenate and calcium sulfonate; and (g) a sulfur-containing extreme-pressure agent free of phosphorus.
    Type: Grant
    Filed: December 21, 2006
    Date of Patent: March 22, 2011
    Assignees: Kyodo Yushi Co., Ltd., NTN Corporation
    Inventors: Mitsuhiro Kakizaki, Takashi Okaniwa, Minoru Ishijima, Shinichi Takabe
  • Publication number: 20110034356
    Abstract: A composition is disclosed which comprises an aryl perfluoropolyether, optionally a halogenated oil, and further optionally a thickening agent. The composition can be used as a lubricant itself or as an additive to an oil or grease lubricant and can withstand temperatures higher than 300° C. without decomposition. The halogenated oil can be a perfluoropolyether, a fluorosilicone, a polytrifluorochloroethylene, or combinations of two or more thereof. The thickening agent can be finely divided silica, boron nitride, clay, soap, poly(tetrafluoroethylene), clay, talc, silica, titanium dioxide, polydimethylsiloxane, polyurea, polyurethane, or combinations of two or more thereof.
    Type: Application
    Filed: October 20, 2010
    Publication date: February 10, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Jon Lee Howell, Alice Elizabeth Van Der Ende, Erik William Perez, Krista Lynn Laugesen
  • Publication number: 20110034355
    Abstract: A composition is disclosed which comprises an aryl perfluoropolyether, optionally a halogenated oil, and further optionally a thickening agent. The composition can be used as a lubricant itself or as an additive to an oil or grease lubricant and can withstand temperatures higher than 300° C. without decomposition. The halogenated oil can be a perfluoropolyether, a fluorosilicone, a polytrifluorochloroethylene, or combinations of two or more thereof. The thickening agent can be finely divided silica, boron nitride, clay, soap, poly(tetrafluoroethylene), clay, talc, silica, titanium dioxide, polydimethylsiloxane, polyurea, polyurethane, or combinations of two or more thereof.
    Type: Application
    Filed: October 20, 2010
    Publication date: February 10, 2011
    Applicant: E.I. DU PONT DE NEMOURS AND COMPANY
    Inventors: Jon Lee Howell, Alice Elizabeth Van Der Ende, Erik William Perez, Krista Lynn Laugesen
  • Patent number: 7867956
    Abstract: A urea-based lubricating grease composition comprising (a) as a thickener, a diurea compound which is an alkyldiurea compound having an average molecular weight in the range of from 600 to 700, wherein in the range of from 25 to 60 mole % of the total alkyl groups is an unsaturated component, and the total amine value of the primary amine constituting the raw material is in the range of from 250 to 350, (b) a base oil having as its main component one or more synthetic hydrocarbon oil(s) having a pour point of ?40° C. or below, wherein the kinematic viscosity of the base oil is 6000 mm2/sec or less at ?40° C., and (c) as additives, a mixture comprising an oil-soluble organic molybdenum complex, an oil-soluble organic zinc compound of dithiocarbamic acid, an oil-soluble organic zinc compound of dithiophosphoric acid and an inorganic sulphur compound; and a roller bearing and electric power steering device wherein the said lubricating grease composition is used as the lubricant.
    Type: Grant
    Filed: December 23, 2005
    Date of Patent: January 11, 2011
    Assignee: Shell Oil Company
    Inventors: Toshihiro Asakura, Yasushi Kawamura, Hirofumi Kuwabara, Takahiro Ozaki, Shigeyuki Sugimori, Keiji Tanaka
  • Patent number: 7786058
    Abstract: A rolling device employing a lubricating grease composition containing a thickener which is a mixture of (a) one or more diurea compounds made from one or more primary amines and a diisocyanate; (b) at least one fatty acid metal salt; (c) at least one amide compound selected from the group consisting of aliphatic amides and bisamides, where the proportions of (a), (b) and (c) satisfy the relationship: a/(b+c)=0.2?10 provided that (1) the proportion of ingredient (a) is 1-10, (2) the proportion of ingredient (b) is 0.5-2.5, and (3) the proportion of ingredient (c) is 0.5-2.5, and the amount of the thickener is 2 to 30% by weight, based on the lubricating grease composition; (d) a base oil which is a lube base oil having a pour point of ?36 to ?67.7° C. that includes a synthetic hydrocarbon oil as the main component; and (e) 1-7% by weight of an additive mixture containing an organomolybdenum complex, an organozinc compound of a dithiocarbamic acid, and an organozinc compound of dithiophosphoric acid.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: August 31, 2010
    Assignee: JTEKT Corporation
    Inventors: Hirofumi Kuwabara, Shigeyuki Sugimori, Toshihiro Asakura