The Nitrogen Is Attached Directly Or Indirectly To -c(=x)-, Wherein X Is Chalcogen, By Nonionic Bonding (e.g., Phosphatides, Amides, Zinc Diamyl Dithiocarbamate, Etc.) Patents (Class 508/335)
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Patent number: 8901049Abstract: The purpose of the present invention is to provide: a sliding member having a lubricating film formed on the sliding surface thereof, and capable of exhibiting friction-reducing performance; and a friction reduction method for the same. To that end, the present invention entails coating the sliding surface with a titanium nitride-based material (for example, titanium carbon nitride, titanium nitride, or titanium aluminum nitride), adding a molybdenum dithiocarbamate with molybdenum in the amount of 600-1000 ppm to diesel engine oil, setting the arithmetic mean roughness of the sliding member to 2-10 nm, and upon converting the Sommerfeld number viscosity to Pa·s, the speed to s?1, and the load to mean Hertzian stress (Pa), then the lubrication conditions for use are within the range of 2.12365×10?19 to 5.94509×10?19.Type: GrantFiled: October 21, 2011Date of Patent: December 2, 2014Assignees: UD Trucks Corporation, Adeka CorporationInventors: Keisuke Yari, Sachiyo Ono, Masaru Iijima, Noriyoshi Tanaka, Kenji Yamamoto, Akihiro Kotaka
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Patent number: 8883696Abstract: The purpose of the present invention is to provide: a sliding mechanism having a lubricating film formed on the sliding surface thereof, and capable of exhibiting friction-reducing performance; and a friction reduction method for the same. To that end, the present invention entails coating the sliding surface with chromium nitride, adding a molybdenum dithiocarbamate with molybdenum in the amount of 600-1000 ppm to diesel engine oil, setting the arithmetic mean roughness of the sliding member to 2-60 nm, and upon converting the Sommerfeld number viscosity to Pa·s, the speed to s?1, and the load to mean Hertzian stress (Pa), then the lubrication conditions for use are within the range of 2.12365×10?20 to 5.94509×10?19.Type: GrantFiled: October 21, 2011Date of Patent: November 11, 2014Assignees: UD Trucks Corporation, Adeka CorporationInventors: Keisuke Yari, Sachiyo Ono, Masaru Iijima, Noriyoshi Tanaka, Kenji Yamamoto, Akihiro Kotaka
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Patent number: 8450255Abstract: The disclosed invention relates to a functional fluid comprising: at least one oil of lubricating viscosity; at least one detergent, the detergent contributing an amount of metal to the functional fluid equal to a concentration in the range from about 0.015 to about 1% by weight of the functional fluid, the detergent contributing an amount of basicity to the functional fluid equal to a total base number in the range from about 0.3 to about 2; and at least one friction modifier, the friction modifier comprising at least two hydrocarbyl groups attached to a polar group or atom (eg., a nitrogen atom).Type: GrantFiled: December 13, 2007Date of Patent: May 28, 2013Assignee: The Lubrizol CorporationInventors: Masahiko Ikeda, Susie Hurley, William D. Abraham, James L. Sumiejski, Craig D. Tipton
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Patent number: 8211839Abstract: The invention relates to an extreme pressure additive composition with excellent corrosion resistance properties for use in grease, as well as a lubricating grease composition containing the additive. The additive composition is based on (a) approximately equal amounts by mass of antimony diamyldithiocarbamate and zinc diamyldithiocarbamate, and (b) thiadiazole dimer poly(ether)glycol complex; at (a):(b) mass ratio of about 1.6:1 to about 9.6:1.Type: GrantFiled: May 27, 2010Date of Patent: July 3, 2012Assignee: R.T. Vanderbilt Company, Inc.Inventors: Ronald J. Tepper, Gaston A. Aguilar, Robert Heverly
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Patent number: 7767633Abstract: The present invention is directed to a low sulfur and low phosphorus heavy duty diesel engine lubricating oil composition comprising (a) a major amount of an oil of lubricating viscosity and (b) one or more dispersants (c) one or more anti-oxidants and (d) one or more ash-containing detergents, wherein the lubricating oil composition is essentially free of zinc di-alkyl di-thiophosphates and contains no more than 0.175 weight percent sulfur and provided the lubricating oil composition does not contain alkylated and non-alkylated aromatic amines and tri-nuclear molybdenum compounds.Type: GrantFiled: November 14, 2005Date of Patent: August 3, 2010Assignee: Chevron Oronite Company LLCInventor: Willem van Dam
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Publication number: 20030134754Abstract: A composition comprising: a high-sulfur API Group I mineral oil base stock; a molybdenum dithiocarbamate in an amount suitable to provide 50 to about 600 ppm molybdenum to the composition; a succinimide dispersant based on a polyolefin-substituted succinic structure, where the polyolefin has a number average molecular weight of at least 1500; a zinc dialkyldithiophosphate derived from at least one secondary alcohol; and a hindered phenol, alkylated aromatic amine, or sulfurized olefin oxidation inhibitor, is capable of passing a Sequence III test.Type: ApplicationFiled: March 6, 2002Publication date: July 17, 2003Applicant: The Lubrizol CorporationInventor: Jack C. Kelley
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Patent number: 6432889Abstract: A grease composition is disclosed which contains a lubricating base oil, and: (A) 2 to 30 wt % of a urea thickener, (B) 0.1 to 20 wt % of a sulfur-containing extreme pressure agent selected from the group consisting of dihydrocarbyl polysulfide, sulfurized oils and fats and mixtures thereof, and (C) 0.05 to 10 wt % of a sulfonate selected from the group consisting of an over-based zinc sulfonate, an over-based magnesium sulfonate and mixtures thereof having total base number of 100 to 500 mgKOH/g, each based on a total amount of said composition.Type: GrantFiled: July 14, 1999Date of Patent: August 13, 2002Assignee: Nippon Mitsubishi Oil CorporationInventors: Hirotugu Kinoshita, Kiyomi Sakamoto
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Patent number: 5874390Abstract: An aqueous machining fluid admixture comprises water, a sulfurized oil and a water soluble salt of a dimercaptothiadiazole wherein the weight ratio of the sulfurized oil to the water soluble salt of dimercaptothiadiazole is in the range of from about 15:1 to about 45:1. A method employs the fluid by applying the fluid at the interface between tool and workpiece in shaping or working operations of metallic and solid non-metallic workpieces. The fluid is particularly effective in grinding operations to produce improved grinding ratios.Type: GrantFiled: December 22, 1997Date of Patent: February 23, 1999Assignee: Cincinnati Milacron Inc.Inventors: Deli Gong, Kevin H. Tucker