With Organic Chalcogen Or Nitrogen Compound Patents (Class 508/442)
  • Patent number: 8962540
    Abstract: To provide a lubricating oil composition including a base oil which is composed of a mineral oil and/or a synthetic oil and which has a viscosity index of 95 or higher, and (A) an alkenylsuccinimide in an amount of 0.1 to 2.0 mass %, (B) an acidic phosphite diester having a C6 to C10 hydrocarbon group in an amount of 0.1 to 2.0 mass %, and (C) at least one species selected from among a perbasic alkaline earth metal sulfonate, a perbasic alkaline earth metal phenate, and a perbasic alkaline earth metal salycilate, in an amount of 0.001 to 0.3 mass %, with respect to the total amount of the composition.
    Type: Grant
    Filed: April 21, 2009
    Date of Patent: February 24, 2015
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Masatoshi Toda
  • Patent number: 8951943
    Abstract: The present invention relates to a method for lubricating a driveline device comprising supplying to the driveline device a lubricating composition comprising an oil of lubricating viscosity and an antiwear package wherein the antiwear package comprises (a) a derivative of a hydroxycarboxylic acid, and (b) a phosphorus compound selected from the group consisting of an amine salt of a phosphate hydrocarbon ester, a phosphite having at least one hydrocarbyl group with 4 or more carbon atoms, and mixtures thereof.
    Type: Grant
    Filed: August 11, 2010
    Date of Patent: February 10, 2015
    Assignee: The Lubrizol Corporation
    Inventors: Morey N. Najman, Mark R. Baker, Vera M. Marsic
  • Patent number: 8921287
    Abstract: The present invention provides a lubricating oil composition with excellent torque capacity and shifting characteristics suitable for use as automatic or continuously variable transmission fluids, which composition comprises a base oil and, on the basis of the total mass of the composition, (A) a sulfonate detergent in an amount of 0.01 to 0.3 percent by mass in terms of metal (MeA); (B) a salicylate detergent in an amount of 0 or more than 0 and 0.1 percent by mass or less, in terms of metal (MeB); and (C) a boron-containing succinimide type ashless dispersant in an amount of 0.001 to 0.1 percent by mass in terms of boron (BoC); (MeB)/(MeA) being 0, or greater than 0 and 1.5 or less, and (MeA)/(BoC) being from 0.001 to 20.
    Type: Grant
    Filed: November 1, 2006
    Date of Patent: December 30, 2014
    Assignee: Nippon Oil Corporation
    Inventors: Hitoshi Komatsubara, Masato Takahashi, Shigeki Matsui
  • 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
  • Publication number: 20140018270
    Abstract: There are provided a lubricating oil composition for a fluid dynamic bearing and a motor for a hard disk drive (HDD), the lubricating oil composition including, as a base oil, an aliphatic monocarboxylic acid ester having a total of between 16 to 46 carbon atoms, obtained by an esterification reaction of carboxylic acid represented by Chemical Formula 1 below and a primary or a secondary alcohol having between 8 to 38 carbon atoms, and thus, the motor for an HDD is fabricated using the lubricating oil composition for a fluid dynamic bearing having low viscosity, low evaporation loss, and improved oxidation stability at a practicable temperature, thereby preventing a deterioration in product reliability due to long-time use of the motor.
    Type: Application
    Filed: May 14, 2013
    Publication date: January 16, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Hyung Kyu KIM, Ha Yong Jung
  • Publication number: 20130170777
    Abstract: The present invention provides a grease composition having an excellent fretting wear resistance in a wide temperature region from low to high temperatures and particularly even at low temperatures and a rolling bearing in which the grease composition is packed. A grease composition (7) is packed inside a grease-packed bearing (1). The grease composition (7) contains base oil, a thickener, and an additive. The additive contains at least, one kind selected from among a phosphite ester shown by a chemical formula (1) or a phosphite ester shown by a chemical formula (2). The content of the phosphite ester is 0.5 to 4 parts by weight for 100 parts by weight which is the total of the amount of the base oil and that of the thickener. (In the chemical formulas (1) and (2), R1, R2, R3, R4, and R5 denote a methyl group or an ethyl group respectively. R1 and R2 are the same group or different groups. R3, R4, and R5 are the same group or different groups).
    Type: Application
    Filed: September 9, 2011
    Publication date: July 4, 2013
    Applicant: NTN CORPORATION
    Inventors: Motohiro Ito, Yoji Sato, Hidenobu Mikami
  • Publication number: 20130157915
    Abstract: The invention provides a grease composition for huh 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: Application
    Filed: September 2, 2011
    Publication date: June 20, 2013
    Applicants: NTN CORPORATION, KYODO YUSHI CO., LTD.
    Inventors: Takashi Azuma, Yoshihisa Imamoto, Motohiro Ito, Yasushi Shibata
  • Publication number: 20120316092
    Abstract: A lubricating oil composition for a continuously variable transmission contains at a specific content: (A) a mineral oil or PAO having a sulfur content of 0.03 mass % or less and a kinematic viscosity at 100 degrees C. from 1.5 mm2/s to 3 mm2/s; (B) a mineral oil or PAO having a sulfur content of 0.03 mass % or less and a kinematic viscosity at 100 degrees C. from 5.5 mm2/s to 8 mm2/s; (C) PAO having a kinematic viscosity at 100 degrees C. from 30 mm2/s to 400 mm2/s; and (D) a polymethacrylate having a mass average molecular weight of 10000 to 40000, in which the total content of the components (C) and (D) is 19 mass % or more and the lubricating oil composition has a kinematic viscosity at 100 degrees C. from 5.5 mm2/s to 6.5 mm2/s and a kinematic viscosity at ?20 degrees C. of 680 mm2/s or less.
    Type: Application
    Filed: November 24, 2010
    Publication date: December 13, 2012
    Applicants: JATCO Ltd., IDEMITSU KOSAN CO., LTD.
    Inventors: Hiroshi Fujita, Toshihiko Ichihashi, Kenji Kojima, Yoshie Arakawa, Makoto Maeda, Hideki Usuki
  • Publication number: 20120277134
    Abstract: A lubricating oil composition contains: at least one lubricating base oil selected from the group consisting of a mineral lubricating base oil and a synthetic lubricating base oil; (a) a neutral phosphorus compound; (b) at least one acid phosphorus compound selected from the group consisting of a specific acid phosphate amine salt and a specific acid phosphite; and (c) a sulfur compound.
    Type: Application
    Filed: November 12, 2010
    Publication date: November 1, 2012
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: Junichi Deshimaru
  • Patent number: 8293692
    Abstract: The present invention provides a lubricating oil composition comprising at least one type of base oil selected from mineral oils and synthetic oils, and a succinate ester and a sarcosinic acid as rust prevention agents. The succinate ester content is preferably set at 0.01 to 0.1 wt. %, and the sarcosinic acid content is preferably set at 0.001 to 0.01 wt. %. Further, they are preferably set such that the resulting weight ratio of the succinate ester content and sarcosinic acid content is 1:0.01 to 0.7. The lubricating oil composition according to the present invention shows excellent rust prevention properties and a satisfactorily long oxidation lifetime. Further it allows to attain a high level of anti-sludge performance and extreme pressure performance and lubrication performance, even when it is used for example in turbine bearings in combined cycle generators having multiplier gears operated under severe high temperature and high pressure conditions.
    Type: Grant
    Filed: July 18, 2007
    Date of Patent: October 23, 2012
    Assignee: Shell Oil Company
    Inventor: Tohru Ikai
  • Publication number: 20120214718
    Abstract: The present invention relates to a method for lubricating a driveline device comprising supplying to the driveline device a lubricating composition comprising an oil of lubricating viscosity and an antiwear package wherein the antiwear package comprises (a) a derivative of a hydroxycarboxylic acid, and (b) a phosphorus compound selected from the group consisting of an amine salt of a phosphate hydrocarbon ester, a phosphite having at least one hydrocarbyl group with 4 or more carbon atoms, and mixtures thereof.
    Type: Application
    Filed: August 11, 2010
    Publication date: August 23, 2012
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: Morey N. Najman, Mark R. Baker, Vera M. Marsic
  • Publication number: 20120196778
    Abstract: The invention provides a lubricating composition containing (a) an oil of lubricating viscosity, (b) a phosphite having at least one hydrocarbyl group that has 4 or more carbon atoms, and (c) a compound derived from a hydroxy-carboxylic acid. The invention further relates to the use of the lubricating composition in an internal combustion engine.
    Type: Application
    Filed: August 11, 2010
    Publication date: August 2, 2012
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: Matthew D. Gieselman, Patrick E. Mosier, Michael R. Sutton, Mark C. Davies, William R.S. Barton
  • 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: 7964542
    Abstract: Liquid compositions containing a specific hindered phenol or a hindered phenol in combination with an aromatic phosphite are provided which are used as a thermal interface between a heatsink and a chip during a test procedure for electronic components which compositions enhance the thermal conductivity between the heatsink and the chip, are easily removed from the heatsink and the chip after the test procedure without any deleterious residue and which allow the use of high temperatures for extended periods during the test procedure without any significant degradation of the composition. A method for using the compositions in electronic component test procedures such as burn-in procedures is also provided.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: June 21, 2011
    Assignee: International Business Machines Corporation
    Inventors: Krishna G. Sachdev, Harbans Singh Sachdev, legal representative, Mark S. Chace, Normand Cote, David L. Gardell, Jeffrey D. Gelorme, Sushumna Iruvanti, G. John Lawson, Tuknekah M. Noble
  • Patent number: 7919440
    Abstract: A lubricating composition with improved storage stability comprising a major amount of an oil of lubricating viscosity, at least one alkali metal borate, at least one polysulfide mixture having at least 40% dihydrocarbyl tetrasulfide or higher sulfides, and at least one non-acidic phosphorus compound comprised of a trihydrocarbyl phosphate and a dihydrocarbyl dithiophosphate derivative is disclosed. In addition to improved storage stability, the composition has improved wear performance when the ratio of polysulfides is controlled.
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: April 5, 2011
    Assignee: Chevron U.S.A. Inc.
    Inventors: John A. Zakarian, Michael J. Haire
  • Patent number: 7833951
    Abstract: The invention provides a water-soluble metal working lubricant which is suitably employed particularly in press-working of aluminum material and which is excellent in both working properties and degreasing properties. The water-soluble metal working lubricant includes 85 mass % or less of water (A); 5 to 75 mass % of a metal salt of an organic carboxylic acid (B) wherein carboxylic acid residue has 8 or more carbon atoms in total and the acid/alkali ratio by mole is 1:0.5 to 1.1; 1 to 50 mass % of at least one metal salt (C) selected from among an organic phosphate ester metal salt, an organic phosphite ester metal salt, an organic phosphonate metal salt, and an organic borate ester metal salt, each having an alkyl group having 8 or more carbon atoms in total; and 10 to 80 mass % of a non-ionic surfactant (D).
    Type: Grant
    Filed: February 3, 2004
    Date of Patent: November 16, 2010
    Assignees: Honda Motor Co., Ltd., Idemitsu Kosan Co., Ltd.
    Inventors: Noboru Hayashi, Katsuhiko Shiotsuki, Mitsuru Osawa, Masato Kaneko, Hideo Kanamori
  • Patent number: 7829511
    Abstract: A stabilized lubricant composition is disclosed that comprises lubricating oil and a mixture of (a) at least one organophosphite compound and (b) at least one aromatic secondary amine or one substituted phenol or mixtures thereof. The compositions have been found to be highly resistant to oxidation under demanding service conditions and to be useful as turbine lubricants.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: November 9, 2010
    Assignee: Chemtura Corporation
    Inventors: Jun Dong, Cyril A. Migdal
  • Publication number: 20100005829
    Abstract: The present invention provides a lubricating oil for a compression type refrigerator including a polyvinyl ether-based compound which containing an alkylene glycol or polyoxyalkylene glycol unit and a vinyl ether unit in a molecule and having a molecular weight in a range of 300 to 3,000 and one or more kinds of phosphorous compound selected from a phosphate having 25 or more carbon atoms, a phosphite having 10 to 60 carbon atoms, an amine salt of phosphate having 10 to 60 carbon atoms, and a metal salt of phosphate having to 60 carbon atoms. The lubricating oil for a compression type refrigerator of the present invention has high compatibility and high viscosity index, and is excellent in anti-seizure property and also in stability under carbon dioxide atmosphere.
    Type: Application
    Filed: September 21, 2007
    Publication date: January 14, 2010
    Applicant: Idemitsu Kosan Co., Ltd.
    Inventors: Masato Kaneko, Harutomo Ikeda
  • Publication number: 20090312209
    Abstract: The present invention provides a lubricating oil composition comprising at least one type of base oil selected from mineral oils and synthetic oils, and a succinate ester and a sarcosinic acid as rust prevention agents. The succinate ester content is preferably set at 0.01 to 0.1 wt. %, and the sarcosinic acid content is preferably set at 0.001 to 0.01 wt. %. Further, they are preferably set such that the resulting weight ratio of the succinate ester content and sarcosinic acid content is 1:0.01 to 0.7. The lubricating oil composition according to the present invention shows excellent rust prevention properties and a satisfactorily long oxidation lifetime. Further it allows to attain a high level of anti-sludge performance and extreme pressure performance and lubrication performance, even when it is used for example in turbine bearings in combined cycle generators having multiplier gears operated under severe high temperature and high pressure conditions.
    Type: Application
    Filed: July 18, 2007
    Publication date: December 17, 2009
    Applicant: SHELL INTERNATIONAL RESEARCH MAATSCHAPPIJ B.V.
    Inventor: Tohru Ikai
  • Publication number: 20090186785
    Abstract: The lubricating oil composition of the invention includes a base oil composed of mineral oil and/or synthetic oil, an amine antioxidant (A-1) in an amount of 800 ppm or more as reduced to the total amount of nitrogen, and a compound containing phosphorus and/or sulfur (A-2). The invention provides a compressor oil which realizes thermal/oxidation stability, resistance to sludge formation, lubricity, long service life, and water separation at high levels.
    Type: Application
    Filed: December 7, 2006
    Publication date: July 23, 2009
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: Hideto Kamimura
  • Patent number: 7407917
    Abstract: An additive compound comprising a non-borated and/or borated reaction product, in which the reaction product is obtained by reacting a linear or branched, saturated or unsaturated monovalent aliphatic acid having 8 to 22 carbon atoms, urea, and polyalkylenepolyamine, when employed in a lubricating oil composition is favorably employable as an automatic transmission fluid of internal combustion engines.
    Type: Grant
    Filed: November 16, 2004
    Date of Patent: August 5, 2008
    Assignee: Chevron Oronite Company LLC
    Inventors: Michio Shiga, Tomotusgu Shiroi
  • Patent number: 7112558
    Abstract: The invention relates to a lubricating composition comprising a base oil of lubricating viscosity, a hydroxy-substituted dithiocarbamate, an organo-molybdenum compound, and optionally a phosphorous source.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: September 26, 2006
    Assignee: Afton Chemical Intangibles LLC
    Inventor: Vincent J. Gatto
  • Patent number: 6890890
    Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) an antiwear improving amount of at least one molybdenum containing composition, (B) at least one phosphorus antiwear or extreme pressure agent, and (C) at least one dispersant, provided that the lubricating composition is free of polysulfurized olefins. The lubricating compositions have improved antiwear properties. When the lubricating composition is used in a manual transmission, the amount of brass wear is reduced.
    Type: Grant
    Filed: August 21, 2003
    Date of Patent: May 10, 2005
    Assignee: The Lubrizol Corporation
    Inventor: Michael P. Gahagan
  • Patent number: 6825154
    Abstract: Lubricating oil formulations comprising base oil, sulfur-phosphorous anti-wear/extreme pressure agents and hindered phenol antioxidants which anti-wear/extreme-pressure agents and hindered phenolic antioxidants are prone to crystal formation wherein the base oil is characterized as having a saturates content of less than 99% are stabilized against crystal formation by the addition of a minor amount of a high molecular weight di- or polycarboxylic acid anhydride, or mixture thereof.
    Type: Grant
    Filed: July 22, 2002
    Date of Patent: November 30, 2004
    Assignee: ExxonMobil Research and Engineering Company
    Inventor: David Gary Lawton Holt
  • Patent number: 6794341
    Abstract: The peak-torque descending composition of the present invention contains a certain amount of an extreme pressure agent comprising at least neutral phosphate esters and/or neutral phosphite esters in a solvent comprising hydrocarbons and/or ethers. Further, a certain corrosion inhibitor may be contained. The part having a sliding portion of the present invention is surface-treated with the above composition. The process for producing a component or precision machine having a sliding portion, including immersing a part having a sliding portion in the above composition to adhere or absorb the composition onto the surface of the part. The press fit method of the present invention includes preliminarily immersing the metal plate or the metal shaft in the peak-torque descending composition to adhere or absorb the composition onto an inner surface of a hole.
    Type: Grant
    Filed: December 27, 2002
    Date of Patent: September 21, 2004
    Assignee: Citizen Watch Co., Ltd.
    Inventors: Yuji Akao, Masayuki Koike
  • Patent number: 6764982
    Abstract: This invention relates to a lubricating oil composition, comprising: (A) a base oil; and a phosphorus-containing compound represented by the formulae wherein in Formulae (B-I) and (B-II), R1, R2 and R3 are independently hydrogen or hydrocarbyl groups, and a, b and c are independently zero or 1; the lubricating oil composition being characterized by a sulfur content of about 0.01 to about 0.25% by weight.
    Type: Grant
    Filed: January 31, 2002
    Date of Patent: July 20, 2004
    Assignee: The Lubrizol Corporation
    Inventors: Ewa A. Bardasz, Virginia A. Carrick, William D. Abraham, Gordon D. Lamb
  • Patent number: 6706670
    Abstract: This invention relates to novel water soluble metal working fluid compositions, their use to work metal, a process for working metal using such compositions and the metal worked article of manufacture. More particularly, this invention relates to fluid compositions useful in cutting, grinding, shaping and other metal working operations which require a lubricant. The terms “first Group A” and “second Group B” are used herein to denote different groups and not to indicate any sequence of use or selection as any possible combination or sequence of use of a component(s) is envisioned without limit of any kind. The disclosed fluid compositions are also anticorrosive and environmentally more acceptable than current oil based fluids.
    Type: Grant
    Filed: February 24, 1999
    Date of Patent: March 16, 2004
    Assignee: Solutia, Inc.
    Inventors: Dennis J. Kalota, Yueting Chou, Timothy K. Hirzel, David C. Silverman, Jacob S. Tou, Winsor R. Cho
  • Patent number: 6689726
    Abstract: Lubricating oil formulations comprising base oil, sulfur-phosphorous anti-wear/extreme pressure agent and hindered phenol antioxidant, which combination of extreme pressure agent and hindered phenol antioxidant produces crystals and containing antioxidants, wherein the base oil is characterized as having a saturates content of 99 wt % or more is stabilized against crystal formation by the addition of a minor amount of high molecular weigh di- or polycarboxylic acid, or anhydride and an ester.
    Type: Grant
    Filed: June 17, 2002
    Date of Patent: February 10, 2004
    Assignee: ExxonMobil Research and Engineering Company
    Inventor: David Gary Lawton Holt
  • Patent number: 6660695
    Abstract: A power transmission fluid comprising a mixture of a major amount of a lubricating oil and an effective amount of a performance enhancing additive combination comprising: (a) at least one organic phosphate having the structure R1—X2—P(:X1)(R2X3)—X—R5 where R1, and R2 may independently be substituted or unsubstituted alkyl, aryl, alkylaryl or cycloalkyl having 1 to 24 carbon atoms and X, X1, X2 and X3 may independently be sulfur or oxygen. R1 and R2 may also contain substituent hetero atoms, in addition to carbon and hydrogen, such as chlorine, sulfur, oxygen or nitrogen; wherein R5 is derived from a reactive olefin and can be either CH2—CHR—C(:O)O—R6; —CH2—CR7HR8; or R9—OC(:O)CH2—CH—C(:O)O—R10 where R is H or the same as R1, R6, R7, R9 and R10 are the same as R1 and R8 is a phenyl or alkyl or alkenyl substituted phenyl moiety, the moiety having from 6 to 30 carbon atoms, (b) a calcium detergent, and (c) a friction modifier.
    Type: Grant
    Filed: March 15, 2002
    Date of Patent: December 9, 2003
    Assignee: Infineum International Ltd.
    Inventors: Raymond F. Watts, Katherine M. Richard
  • Patent number: 6642187
    Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) at least one organic polysulfide comprising at least about 90% dihydrocarbyl trisulfide, from about 0.1% up to about 8% dihydrocarbyl disulfide, and less than about 5% dihydrocarbyl higher polysulfides, and (B) at least one overbased metal composition, at least one phosphorus or boron compound, or mixtures of two or more thereof. The invention also relates to concentrates and greases containing the above combination. The invention also relates to methods of making the organic polysulfide.
    Type: Grant
    Filed: December 24, 1996
    Date of Patent: November 4, 2003
    Assignee: The Lubrizol Corporation
    Inventors: James J. Schwind, Ross L. Beebe
  • Publication number: 20030181339
    Abstract: An power transmission fluid comprising a mixture of a major amount of a lubricating oil and an effective amount of a performance enhancing additive combination comprising: (a) at least one organic phosphate having the structure: R1—X2—P(:X1)(R2X3)—X—R5 where R1, R2, R3, and R4 may independently be substituted or unsubstituted alkyl, aryl, alkylaryl or cycloalkyl having 1 to 24 carbon atoms and X, X1, X2 and X3 may independently be sulfur or oxygen.
    Type: Application
    Filed: March 15, 2002
    Publication date: September 25, 2003
    Inventors: Raymond F. Watts, Katherine M. Richard
  • Publication number: 20030171227
    Abstract: Stabilising compositions for lubricant base stocks and lubricant formulations are composed of a mixture of (a) at least one aromatic aminic amine antioxidant optionally blended with at least one hindered phenolic antioxidant and (b) at least one neutral organo phosphate or phosphite, optionally blended with at least one acid organo phosphate or phosphite. These stabilising composition mixtures are characterised by their stabilising capacity which is considerably higher than that of either the single antioxidants or the single phosphate or phosphite additives. These stabilising compositions can be used in all fields where the single components of the mixtures are generally used and where deterioration due to oxidation processes takes place.
    Type: Application
    Filed: November 5, 2002
    Publication date: September 11, 2003
    Inventors: Alan Holt, Gerard Mulqueen
  • Patent number: 6613722
    Abstract: A lubricating composition for lubricating a continuously variable transmission, the lubricating composition comprising a mixture of a major amount of a lubricating oil and an effective amount of a performance enhancing additive combination comprising: (a) at least one organic phosphite; (b) at least one amine salt of an organic phosphate; and (c) one or more friction modifiers selected from the group consisting of selected (1) amides, (2) succinimides, and (3) ethoxylated amines.
    Type: Grant
    Filed: March 7, 1997
    Date of Patent: September 2, 2003
    Assignee: Exxon Chemical Patents Inc.
    Inventors: Raymond F. Watts, Philip Reeve
  • Publication number: 20030109387
    Abstract: The peak-torque descending composition of the present invention contains a certain amount of an extreme pressure agent comprising at least neutral phosphate esters and/or neutral phosphite esters in a solvent comprising hydrocarbons and/or ethers. Further, a certain corrosion inhibitor maybe contained. The part having a sliding portion of the present invention is surface-treated with the above composition. The process for producing a component or precision machine having a sliding portion comprises immersing a part having a sliding portion in the above composition to adhere or absorb the composition onto the surface of the part, then immediately, taking out the part from the composition, followed by drying, and subsequently assembling a component or precision machine using the part.
    Type: Application
    Filed: December 27, 2002
    Publication date: June 12, 2003
    Inventors: Yuji Akao, Masayuki Koike
  • Patent number: 6534451
    Abstract: Power transmission fluids exhibiting improved antiwear properties containing a novel antiwear additive formed by reacting elemental sulfur and a dialkyl phosphite in the presence of an acylated amine compound. Also present in the fluid are dispersant, friction modifier, antioxidant and viscosity modifier.
    Type: Grant
    Filed: April 5, 2002
    Date of Patent: March 18, 2003
    Assignee: Infineum International Ltd.
    Inventors: Raymond F. Watts, Roger K. Nibert, Keith R. Gorda
  • Publication number: 20030013619
    Abstract: To provide a lubricating oil composition for continuously variable transmission which ensures both a high coefficient of friction between metals required for a push belt-type CTV oil and excellent oxidation stability guaranteeing the performance over a long time.
    Type: Application
    Filed: June 5, 2001
    Publication date: January 16, 2003
    Inventors: Takehisa Sato, Takanori Kugimiya
  • Patent number: 6482779
    Abstract: A lubricating grease composition having a basic grease composition containing a synthetic oil as a base oil, and a lithium soap as a thickener. 0.5 to 10% by weight with respect to the basic grease composition total amount of at least one additive selected from the group consisting of an organic molybdenum compound, an organic fatty acid compound or an derivative thereof, and an organic phosphorus compound is added is provided. Accordingly, the present invention can provide a lubricating grease composition capable of providing excellent lubricating characteristics, fretting wear resistance property, and impact resistance property.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: November 19, 2002
    Assignees: NSK Ltd., Kyodo Yushi Co., Ltd.
    Inventors: Michiharu Naka, Atsushi Yokouchi, Koichi Hachiya, Toru Takamizawa, Jun Kuraishi, Yasunobu Fujita, Hiroshi Kimura, Akimi Kimura, Yuji Onuki
  • Patent number: 6426323
    Abstract: To provide a lubricating oil composition for continuously variable transmission which ensures both a high coefficient of friction between metals required for a push belt-type CTV oil and an excellent wear preventing property relative to a belt and a pulley. A lubricating oil composition for continuously variable transmission is provided, which comprises a lubricating base oil made of a mineral oil and/or a synthetic oil formulated with a metal detergent and a phosphorus-based wear preventive characterized in that a ratio between a content (ppm) of a metal derived from said metal detergent and based on the total weight of the lubricating oil composition and a total base number (mg KOH/g) ranges 0.75-4.5 (ppm/mg KOH/g), and a ratio between the content (ppm) of the metal derived from said metal detergent and a content of phosphorus derived from said phosphorus-based wear preventive ranges 0.5-2.0 (ppm/ppm).
    Type: Grant
    Filed: June 5, 2001
    Date of Patent: July 30, 2002
    Assignee: TonenGeneral Sekiyu K.K.
    Inventors: Takehisa Sato, Takanori Kugimiya
  • Patent number: 6362136
    Abstract: This invention relates to compositions containing a sulfur containing antiwear/extreme pressure agent, basic nitrogen compound or a mixture thereof together with a hydrocarbyl mercaptan. The composition may additionally contain a phosphorus or boron antiwear or extreme pressure agent, a dispersant or an overbased metal salt. The invention also relates to lubricants, functional fluids, and concentrates containing the same. Seals, e.g. nitrile, polyacrylate, and fluoroelastomer, in contact with these composition have reduced deterioration. With the use of these compositions, lubricants, and functional fluids, the seals' useful life is extended.
    Type: Grant
    Filed: March 26, 1996
    Date of Patent: March 26, 2002
    Assignee: The Lubrizol Corporation
    Inventors: Robert C. Richardson, Donald J. Marn
  • Publication number: 20020016266
    Abstract: The invention relates to improved compositions comprising thiophosphoric acid esters and dithiophosphoric acid esters or phosphoric acid thioesters and oil additives from the group of the polyol partial esters, amines and epoxides, and also to the use of those lubricant compositions in improving the performance properties of lubricants, such as greases, metal-working fluids, gear fluids or hydraulic fluids. Thiophosphoric acid esters and dithiophosphoric acid esters or phosphoric acid thioesters are present in the compositions preferably in a concentration of less than 400 ppm.
    Type: Application
    Filed: August 17, 2001
    Publication date: February 7, 2002
    Inventors: Michael Fletschinger, Peter Rohrbach, Peter Collen Hamblin, Dudley Clark, Marc Ribeaud
  • Publication number: 20020010103
    Abstract: The present invention relates to a lubricating oil composition for use in industrial oils such as hydraulic oils, bearing oils, industrial gear oils and sliding surface lubricating oils.
    Type: Application
    Filed: March 29, 2001
    Publication date: January 24, 2002
    Inventors: Himiko Takayama, Katsumi Umehara
  • Publication number: 20020002119
    Abstract: A lubricating grease composition having a basic grease composition containing a synthetic oil as a base oil, and a lithium soap as a thickener. 0.5 to 10% by weight with respect to the basic grease composition total amount of at least one additive selected from the group consisting of an organic molybdenum compound, an organic fatty acid compound or an derivative thereof, and an organic phosphorus compound is added is provided. Accordingly, the present invention can provide a lubricating grease composition capable of providing excellent lubricating characteristics, fretting wear resistance property, and impact resistance property.
    Type: Application
    Filed: March 21, 2001
    Publication date: January 3, 2002
    Inventors: Michiharu Naka, Atsushi Yokouchi, Koichi Hachiya, Toru Takamizawa, Jun Kuraishi, Yasunobu Fujita, Hiroshi Kimura, Akimi Kimura, Yuji Onuki
  • Patent number: 6303546
    Abstract: There is disclosed a traction drive fluid which comprises a base oil blended with (A) an active phosphate ester base compound, (B) a boron-containing imide base dispersant (e.g. polyalkenyl succinimide treated with a boron compound) and (C) a boron-free imide base dispersant (e.g. polyalkenyl succinimide) in such blending amounts that the phosphorus content derived from the component (A) and the boron content derived from the component (B) are each 100 to 600 ppm, preferably 60 to 300 ppm by weight, and at least 60 ppm by weight, respectively based on the base oil, and the boron-free imide base dispersant (C) is blended so that the ratio by weight of the nitrogen in the component(C) to the boron in the component (B) is at least 1, preferably 1 to 6.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: October 16, 2001
    Assignees: Idemitsu Kosan Co., Ltd., NSK Co., Ltd., Nissan Motor Co., Ltd.
    Inventors: Hitoshi Hata, Tomomi Miyaji, Nobuo Goto, Yoshie Arakawa, Yasuhiro Murakami
  • Patent number: 6232275
    Abstract: There is disclosed a lubricating oil composition for automatic transmissions which comprises a base oil comprising at least one oil selected from the group consisting of a mineral oil and a synthetic oil each having a specific kinematic viscosity and a % CA; (A) a non-boron based succinic acid imide (e.g. polybutenylsuccinic acid imide) and a boron based succinic acid imide each in an amount of 0.1 to 5% by weight based on the whole composition; (B) a condensation product of a branched chain fatty acid having 8 to 30 carbon atoms (e.g. isostearic acid) and an amine (e.g. tetraethylene-pentamine) in an amount of 0.05 to 2% by weight based on the same; and (C) a dialkyl hydrogenphosphite (e.g. dioleyl hydrogenphosphite) in an amount of 0.1 to 1% by weight based on the same, and optionally at least one member selected from viscosity index improvers, antioxidants, metal deactivators, defoaming agents, detergents, extreme pressure agents and rust preventives.
    Type: Grant
    Filed: November 24, 1999
    Date of Patent: May 15, 2001
    Assignees: Idemitsu Kosan Co., Ltd., Nissan Motor Co., Ltd.
    Inventors: Toshihiko Ichihashi, Masayuki Kato, Takao Ishikawa, Yasuhiro Murakami, Kazuo Umesato, Rika Yauchihara
  • Patent number: 6172014
    Abstract: Disclosed is an improved method of reducing compressor gas leakage by providing a compression cylinder with a lubricant comprising less than about 1% of a synergistic mixture of antioxidants.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: January 9, 2001
    Assignee: Pennzoil-Quaker State
    Inventor: Douglas Meyers
  • Patent number: 6136759
    Abstract: Provided is a novel additive composition containing (a) a compound having, in the molecule, a group of a general formula (I): ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each represent a hydrogen atom or a methyl group, but at least one of R.sup.2 and R.sup.3 is a hydrogen atom,and (b) an extreme-pressure improver containing sulfur and/or phosphorus, and optionally, as an additional component (c), an extreme-pressure improver containing neither sulfur nor phosphorus. Lubricating oil compositions comprising the additive composition have high load carrying capacity, and are effectively used as metal working oils and hydraulic oils, such as forging oil, pressing oil, drawing oil, rolling oil, cutting oil, grinding oil, etc.
    Type: Grant
    Filed: March 29, 1999
    Date of Patent: October 24, 2000
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Fumiaki Takagi, Kazuaki Abe, Masami Yamanaka, Norihito Kanno, Katsumi Ichitani
  • Patent number: 6063742
    Abstract: Improved grease compositions comprise a major amount of an oil based metal soap thickened base grease selected from the group consisting of simple metal soap thickened base grease, complex grease and failed complex grease, at least one metal salt of a sulfur and phosphorus containing acid, an overbased metal salt of an organic acid, a hydrocarbyl phosphite, and optionally, an aliphatic group substituted carboxylic acid, anhydride thereof and aliphatic group substituted lactone, wherein the aliphatic group contains at least about 8 carbon atoms in amounts sufficient to increase the dropping point of the base grease, as measured by ASTM Procedure D-2265 by at least 15.degree. C.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: May 16, 2000
    Assignee: The Lubrizol Corporation
    Inventor: Edward J. Konzman
  • Patent number: 5872085
    Abstract: Lubricant or lubricant concentrate on mineral oil and/or synthetic oil basis having improved lubricating properties, in particular improved load bearing, sliding and corrosion inhibiting properties, which containsa) one or more mineral oils and/or synthetic oils as base oil andb) at least one compound A containing in its molecule at least one quaternary carbon atom and at least one ester bond and/or ether bond, as well asc) further usual additives.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: February 16, 1999
    Inventor: Erasmus Froeschmann
  • Patent number: 5854183
    Abstract: A grease composition for constant-velocity joints which is prepared by blending a lube base oil with (A) a urea-urethane thickening agent comprising a mixture of(a) 20 to 95 mole % of a diurea compound of the formula (1): ##STR1## (b) 4 to 50 mole % of a urea-urethane compound of the formula (2): ##STR2## and (c) 1 to 50 mole % of a diurethane compound of the formula (3): ##STR3## with each mole percentage being based on the total amount of the components (a) to (c), wherein a ratio of the total number of R.sup.2 --NH--, R.sup.3 --NH-- and R.sup.5 --NH-- groups contained in the mixture to the total number of R.sup.6 --O--, R.sup.8 --O-- and R.sup.9 --O-- groups contained therein lies between 40:60 and 95:5,(B) at least one compound selected from oxidized paraffins, diphenyl hydrogenphosphite and hexamethylphosphoric triamide, and(C) at least one organomolybdenum compound selected from molybdenum dithiophosphate and molybdenum dithiocarbamate.
    Type: Grant
    Filed: April 23, 1997
    Date of Patent: December 29, 1998
    Assignees: Nippon Oil Co., Ltd., NTN Corporation
    Inventors: Yukio Hasegawa, Shinichi Takabe, Hirotsugu Kinoshita, Souichi Nomura, Fumihiro Itano
  • Patent number: RE44475
    Abstract: A lubricating composition with improved storage stability comprising a major amount of an oil of lubricating viscosity, at least one alkali metal borate, at least one polysulfide mixture having at least 40% dihydrocarbyl tetrasulfide or higher sulfides, and at least one non-acidic phosphorus compound comprised of a trihydrocarbyl phosphate and a dihydrocarbyl dithiophosphate derivative is disclosed. In addition to improved storage stability, the composition has improved wear performance when the ratio of polysulfides is controlled.
    Type: Grant
    Filed: February 24, 2012
    Date of Patent: September 3, 2013
    Assignee: Chevron U.S.A. Inc.
    Inventors: John A. Zakarian, Michael J. Haire