KYODO YUSHI CO., LTD. Patent applications |
Patent application number | Title | Published |
20150330451 | ROLLING BEARING AND GREASE COMPOSITION USED THEREIN - A rolling bearing including a plurality of rolling elements rollably provided between an inner ring and an outer ring and having enclosed therein a grease composition obtained by adding three kinds of antirust agents which are a carboxylic acid-based antirust agent, a carboxylate-based antirust agent and an amine-based antirust agent, to a base oil which contains at least one kind of a mineral oil and a synthetic oil and has a kinematic viscosity of 200 to 400 mm | 11-19-2015 |
20150307805 | GREASE-ENCLOSED BEARING - A grease-enclosed bearing having enclosed therein a grease composition containing a thickener which is a diurea compound represented by Formula (1) or a mixture thereof, and a base oil containing an alkyldiphenyl ether oil and a poly-α-olefin oil as an optional component in a mass ratio of alkyldiphenyl ether oil:poly-α-olefin oil=from 40:60 to 100:0: | 10-29-2015 |
20150299610 | GREASE COMPOSITION WITH IMPROVED ANTI-FRETTING PROPERTIES AT LOW TEMPERATURES - The invention provides a grease composition containing a thickener, a base oil and an amine phosphate. | 10-22-2015 |
20150299608 | GREASE COMPOSITION FOR HUB UNIT BEARING - The invention provides a grease composition for hub unit bearing, having (a) as a base oil a mixture of a hydrocarbon synthetic oil and an ester type synthetic oil, with the content of the ester type synthetic oil being 20 to 50 parts by mass with respect to 100 parts by mass of the total of the hydrocarbon synthetic oil and the ester type synthetic oil, and the base oil having a kinematic viscosity at 40° C. of 20 to 80 mm | 10-22-2015 |
20150252282 | GREASE COMPOSITION - Provided is a grease composition containing a urea thickener represented by formula (1): | 09-10-2015 |
20150247105 | GREASE COMPOSITION - A grease composition for constant velocity joints which comprises the following components: (a) a base oil, (b) a thickener, (c) a montan wax, (d) a zinc sulfonate, and (e) a sulfurized molybdenum dialkyldithiocarbamate. | 09-03-2015 |
20150232784 | GREASE COMPOSITION - The invention provides a grease composition for rolling bearings of automotive electrical equipment or automotive auxiliaries, containing a base oil that includes as an essential component an alkyldiphenyl ether oil; a diurea thickener represented by formula (1); an anti-flaking additive including an organic sulfonate rust inhibitor and a load carrying additive; and an antioxidant. In the formula (1), R | 08-20-2015 |
20140142012 | GREASE COMPOSITION FOR EV/HEV DRIVING MOTOR BEARING AND EV/HEV DRIVING MOTOR BEARING - A grease composition for EV/HEV driving motor bearing, containing a diurea thickener of the following formula (A): | 05-22-2014 |
20140128300 | LUBRICATING GREASE COMPOSITION - 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. | 05-08-2014 |
20130345101 | GREASE COMPOSITION - The invention provides a grease composition for rolling bearings of automotive electrical equipment or automotive auxiliaries, where a base oil contains as an essential component an alkyldiphenyl ether oil; a thickener is a diurea compound represented by the following formula (1): | 12-26-2013 |
20130331306 | GREASE COMPOSITION AND GREASE-PACKED ROLLING BEARING - A grease composition for a rolling bearing for a motor to support a rotor of the motor, containing a pentaerythritol ester base oil with a kinematic viscosity at 40° C. of 20 to 55 mm | 12-12-2013 |
20130310292 | GREASE COMPOSITION - 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: | 11-21-2013 |
20130210688 | LUBRICATING GREASE COMPOSITION - The invention provides a lubricating grease composition with a worked penetration of 400 to 500 for a machine tool equipped with an automatic lubricator, containing a base oil having a kinematic viscosity at 40° C. of 10 to 200 mm | 08-15-2013 |
20130157915 | GREASE COMPOSITION FOR HUB UNIT BEARING - 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. | 06-20-2013 |
20130137615 | LUBRICANT COMPOSITION USING IONIC LIQUID AS BASE OIL AND HAVING EXCELLENT RUST PREVENTION PROPERTIES - The invention provides a lubricant composition containing (A) an ionic liquid having an anion represented by formula 1: (Rf1-SO | 05-30-2013 |
20130130957 | GREASE COMPOSITION AND MECHANICAL PART - The invention provides a grease composition containing a base oil, a thickener and a rust inhibitor, characterized in that the rust inhibitor includes an organic sulfonate and a fatty acid amine salt. The grease composition of the invention exhibits excellent rust preventing characteristics and causes little damage to the environment. | 05-23-2013 |
20130123153 | MAGNETO-RHEOLOGICAL GREASE COMPOSITION - The invention provides a magneto-rheological grease composition which contains (a) a base oil including at least 30% by mass of an ether type synthetic oil; (b) an aliphatic diurea thickener; and (c) magnetic particles in an amount of 45 to 95% by mass based on the total mass of the composition. The magneto-rheological grease composition can show superior thermal stability, dispersion stability and magneto-rheological properties. | 05-16-2013 |
20130079158 | GREASE COMPOSITION FOR CONSTANT VELOCITY JOINT AND CONSTANT VELOCITY JOINT - The invention provides a grease composition for constant velocity joint containing the components (a) to (g) below and a constant velocity joint containing said composition. (a) a diurea thickening agent having the following formula (1): | 03-28-2013 |
20120314985 | GREASE COMPOSITION FOR HUB UNIT BEARING EMPLOYING AN ANGULAR CONTACT BALL BEARING AND HUB UNIT BEARING - The invention provides a grease composition for a hub unit bearing employing an angular contact ball bearing, containing (a) as a thickener a mixture of diurea compounds represented by formula (I): R | 12-13-2012 |
20120277136 | GREASE COMPOSITION FOR BEARINGS WITH IMPROVED HEAT-RESISTANT ACOUSTIC LIFE - The invention provides a grease composition having (A) a lithium soap thickener, (B) as a base oil an ester type synthetic oil obtainable from an esterification reaction of trimethylolpropane with a fatty acid, and (C) (c-1) a 1-naphthylamine type antioxidant and (c-2) a diphenylamine type antioxidant, wherein the contents of (c-1) and (c-2) are 1.0 to 10 mass% in total, based on the total mass of the composition, and the ratio by mass of (c-1) to (c-2) is in the range from 30:70 to 70:30. | 11-01-2012 |
20120214721 | GREASE COMPOSITION COMPRISING POLYMER ALLOY, A STRUCTURE PART ENCLOSING THE SAME AND A METHOD FOR PRODUCING THE GREASE COMPOSITION - A grease composition having a thickener, a base oil containing a hydrocarbon oil, and a polymer alloy of an olefin copolymer and a styrene-based copolymer is disclosed. | 08-23-2012 |
20120196781 | GREASE COMPOSITION FOR BEARING OF WIND POWER GENERATOR - 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 mm | 08-02-2012 |
20120195678 | GREASE COMPOSITION AND CONSTANT VELOCITY JOINT - The invention provides a grease composition containing (a) a base oil, (b) a lithium soap based thickener, (c) at least one stearic acid metallic salt selected from the group consisting of Ca stearate, Mg stearate and Zn stearate, (d) molybdenum dialkyl dithiocarbamate sulfide, and (e) zinc dialkyl dithiocarbamate sulfide. The present invention also provides a constant velocity joint such as a Barfield constant velocity joint (BJ), double offset constant velocity joint (DOJ), tripod constant velocity joint (TJ) or the like, containing the above-mentioned grease composition therein. The grease composition of the invention is excellent in antiwear properties and suitable for the constant velocity joint. | 08-02-2012 |
20120177938 | METALWORKING FLUID, METAL WORKING METHOD AND METAL WORK PRODUCT - The invention provides a metalworking fluid which contains (A) a base oil including 2-ethylhexanol palmitate or 2-ethylhexanol stearate, and (B) an anionic surfactant that is a salt of a branched aliphatic carboxylic acid having 8 to 18 carbon atoms with a branched alkanolamine having 3 to 12 carbon atoms. The metalworking fluid of the invention is excellent in the cutting performance, anti-foaming properties, stability of stock solution, emulsion stability and resistance to hydrolysis, and shows low kinematic viscosity at low temperatures. | 07-12-2012 |
20110294705 | NOISE REDUCING GREASE COMPOSITION - The invention provides a grease composition capable of smoothly operating the lubricated parts even under wide-ranging temperature conditions, and at the same time, exhibiting excellent noise reducing effect on, the lubricated parts. The grease composition containing a base oil and a thickener is provided, wherein the base oil includes at least one first base oil selected from the group consisting of poly-α-olefins and ethylene-α-olefin oligomers and at least one second base oil selected from the group consisting of polybutene, polyisobutylene, polymethacrylate, and styrene based copolymers, with the first base oil being contained in an amount of 65 mass % or more and the second base oil being contained in an amount of 1 mass % or more and less than 35 mass % based on the total mass of the base oil, the base oil having a kinematic viscosity of 350 to 1400 mm | 12-01-2011 |
20110168479 | LUBRICANT COMPOSITION, SPEED REDUCTION GEAR, AND ELECTRIC POWER STEERING APPARATUS - A lubricant composition, which is low in friction, does not have an attacking property against polyamide resin, etc., is excellent in heat resistance, and especially does not undergo deterioration or loss of the respective characteristics in a short term when used under a high temperature environment, is provided along with a speed reduction gear and an electric power steering apparatus that use the lubricant composition. The lubricant composition has blended therein a synthetic hydrocarbon oil, a urea thickener, zinc stearate, and a sulfur-based antioxidant. A speed reduction gear has a portion of engagement of a small gear and a large gear filled with the lubricant composition. In an electric power steering apparatus, an output of a steering assisting electric motor is speed reduced and transmitted to a steering mechanism via the speed reduction gear. | 07-14-2011 |
20110086785 | GREASE COMPOSITION FOR AUTOMOBILE WHEEL BEARING - The present invention provides a grease composition for automobile wheel bearings, which contains (a) an urea thickener represented by general formula (1); R | 04-14-2011 |
20110059875 | GREASE COMPOSITION FOR CONSTANT VELOCITY JOINT AND THE CONSTANT VELOCITY JOINT - The invention provides a grease composition that can improve the durability and the temperature control properties of constant velocity joints and reduce the rotating torque at low temperatures, and a constant velocity joint where the above-mentioned grease composition is packed. The grease composition for constant velocity joints includes (a) a base oil containing a synthetic oil, (b) a thickener, (c) zinc dithiophosphate, (d) molybdenum dialkyl dithiocarbamate sulfide, and (e) zinc dialkyl dithiocarbamate. | 03-10-2011 |
20100298178 | LUBRICANT COMPOSITION AND MECHANICAL MEMBER - The invention provides a lubricant composition capable of favorably preventing the members from causing hydrogen embrittlement-induced flaking when the members are operated under the conditions where the oil film is thin (namely, the metal surfaces considerably come in contact with each other). The lubricant composition used for lubricating the steel mechanical members operated by a rolling motion or rolling-sliding motion is characterized by containing a base oil and additives, the additives including an organic sulfonate rust inhibitor and a load carrying additive. | 11-25-2010 |
20100093567 | GREASE COMPOSITION AND BEARING - A grease is provided which has an improved inflow property of the grease into a lubrication unit and has a long life when used for bearings even under a high temperature environment. | 04-15-2010 |
20100087344 | GREASE COMPOSITION AND MACHINE PART - A grease composition which has an excellent anti-fretting property and general versatility, and a machine part which uses the same are provided. A grease composition comprising a urea thickener, a base oil, a phosphorothioate compound and an amine compound and a machine part which uses the same are provided. | 04-08-2010 |
20090298730 | METALWORKING OIL COMPOSITION, METALWORKING METHOD AND METALWORK - The invention provides a metalworking oil composition which is used for a very small amount of oil-feeding type metalworking method, said composition comprising a base oil selected from the group consisting of natural fats and oils, derivatives thereof and synthetic ester oils; and an antirust agent comprising a sorbitan fatty acid ester and a phospholipid, and a metalworking method using the composition and metalwork obtained by the metalworking method. The oil composition shows excellent lubricity and antirust property and is suitably used for metalworking of metallic materials such as cast iron, steel, stainless steel, and nonferrous metal (such as Al alloy and Mg alloy) by a method in which a very small amount of oil is supplied. | 12-03-2009 |
20090118151 | Metal-Processing Oil Composition and Metal-Processing Method - The present invention provides a water-soluble metal-processing oil composition which is excellent in putrefaction resistant properties and sparingly has any bad influence upon global environment and human body and a method for processing metals which makes use of the metal-processing oil composition. | 05-07-2009 |
20090003742 | Grease Composition For Hub Unit Bearing, And Hub Unit Bearing For Vehicle - An object of the invention is to provide a grease composition capable of keeping a good lubrication condition for a long period of time even when water has mixed therein, thereby inhibiting white structure flaking and corrosion. Another object is to provide a vehicular hub unit bearing which hardly suffers from white structure flaking and corrosion even when used in an environment where water may penetrate into it and which therefore has a long life. | 01-01-2009 |
20080219610 | Waterproof Grease Composition and Wheel-Supporting Roller Bearing - The waterproof grease composition of the present application comprises a base oil that comprises at least one of mineral oil and synthetic oil and having a kinematic viscosity of from 10 to 400 mm | 09-11-2008 |