The Benzene Ring Is Bonded Directly To The Single Bonded Oxygen Of A -c(=o)o- Group Patents (Class 508/483)
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Patent number: 9062272Abstract: Chemical compositions, lubricant compositions, and methods of using the same are provided. The lubricant composition may comprise at least on carrier. In certain methods, the lubricant composition may be provided to at least one surface, wherein the lubricant composition reduces a coefficient of friction of the at least one surface. In certain methods, the lubricant composition may be provided to at least one surface, wherein the lubricant composition reduces wear of the at least one surface.Type: GrantFiled: June 7, 2012Date of Patent: June 23, 2015Assignee: THE CHARLES STARK DRAPER LABORATORY, INC.Inventors: Henry Raczkowski, D. Andrew Dineen, Jr., Daniel D'Auge
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Patent number: 8946134Abstract: 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: GrantFiled: February 24, 2010Date of Patent: February 3, 2015Assignee: NTN CorporationInventors: Hidenobu Mikami, Yosuke Taguchi, Takayuki Kawamura
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Patent number: 8299004Abstract: A hydraulic fluid of the present invention contains, as a base oil, an ester having two or more ring structures, the two or more ring structures being at least one selected from an aromatic ring and a saturated naphthenic ring. Particularly, the hydraulic fluid contains an ester having two or more aromatic rings as the base oil. The hydraulic fluid has low energy loss due to compression and exhibits excellent responsiveness when being used in a hydraulic circuit. Consequently, the hydraulic fluid realizes energy-saving, high-speed operation and high precision of control in the hydraulic circuit.Type: GrantFiled: April 21, 2008Date of Patent: October 30, 2012Assignee: Idemitsu Kosan Co., Ltd.Inventor: Toshiyuki Tsubouchi
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Patent number: 7407919Abstract: A composition for lubricating an internal combustion engine includes an oil of lubricating viscosity; a predominantly linear alkylbenzenesulfonate detergent having a metal ratio of at least 8; and a combination of hindered phenolic ester antioxidant and aromatic amine antioxidant. The amount of any phenate detergent is less than 15% by weight of the total amount of detergents.Type: GrantFiled: October 15, 2002Date of Patent: August 5, 2008Assignee: The Lubrizol CorporationInventors: Melody A. Wilk, Brent R. Dohner, Frank V. Zalar, Jack C. Kelley
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Patent number: 7081440Abstract: Use as stabilizers of perfluoropolyether oils at high temperatures, higher than 200° C.Type: GrantFiled: April 17, 2003Date of Patent: July 25, 2006Assignee: Solvay Solexis S.p.A.Inventors: Walter Navarrini, Patrizia Maccone
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Patent number: 6989356Abstract: To provide a lubricant for recording medium, which is advantageous not only in that it maintains excellent lubricity under various conditions for use and excellent lubricating effect over a long time, but also in that it can impart excellent transport properties and excellent abrasion resistance as well as excellent durability. For example, when C18H37—CH(CH2COOC10H6OH)COORf (wherein Rf represents a saturated or unsaturated partially-fluorinated-alkyl group) is used as a lubricant for magnetic recording medium, there can be obtained a magnetic recording medium having excellent transport properties and excellent abrasion resistance as well as excellent durability.Type: GrantFiled: April 8, 2003Date of Patent: January 24, 2006Assignee: Sony Corp.Inventors: Ken Kobayashi, Takahiro Kamei, Noriyuki Kishii, Kenichi Kurihara, Yutaka Iwamoto, Hisanori Tsuboi
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Publication number: 20030224953Abstract: To provide a lubricant for recording medium, which is advantageous not only in that it maintains excellent lubricity under various conditions for use and excellent lubricating effect over a long time, but also in that it can impart excellent transport properties and excellent abrasion resistance as well as excellent durability. For example, when C18H37—CH(CH2COOC10H6OH)COORf (wherein Rf represents a saturated or unsaturated partially-fluorinated-alkyl group) is used as a lubricant for magnetic recording medium, there can be obtained a magnetic recording medium having excellent transport properties and excellent abrasion resistance as well as excellent durability.Type: ApplicationFiled: April 8, 2003Publication date: December 4, 2003Inventors: Ken Kobayashi, Takahiro Kamei, Noriyuki Kishii, Kenichi Kurihara, Yutaka Iwamoto, Hisanori Tsuboi
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Patent number: 5962380Abstract: The use of an effective amount of a compound as an additive improving the compatibility of a lubricating oil formulation having dispersants containing basic nitrogen atoms, with fluorocarbon elastomer seals. That compound has the formula: ##STR1## wherein R and R.sup.1 are independently alkoxycarbonyl, alkenyloxycarbonyl, aryloxycarbonyl, alkylcarbonyl, alkenylcarbonyl, arylcarbonyl, or arylalkyl, or together form a carbocycle, and R.sup.2 and R.sup.3 are independently sulfurized alkyl, alkoxycarbonylalkyl, arylalkyl, or borated hydroxyalkyl, with the proviso that R, R.sup.1, R.sup.2 and R.sup.3 together contain sufficient carbon atoms to render the compound oil soluble in an oil of lubricating viscosity.Type: GrantFiled: July 16, 1997Date of Patent: October 5, 1999Assignee: Chevron Chemical Company LLCInventors: Pierre Tequi, Jacques Cazin, Andrew W. Ho
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Patent number: 5821374Abstract: A process for oxidizing primary and secondary alcohols to the corresponding aldehydes and ketones is disclosed. The oxidation is carried out by reacting the primary or secondary alcohol with an organic N-chloro compound oxidizing agent in the presence of a catalyst of the formula: ##STR1## wherein the substituent groups are as defined in the specification.Type: GrantFiled: November 12, 1996Date of Patent: October 13, 1998Assignee: Hoffmann-La Roche Inc.Inventors: Christian-Johannes Jenny, Bruno Lohri, Markus Schlageter
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Patent number: 5686398Abstract: There are herein disclosed an additive for a lubricant or a fuel which comprises at least one selected from the group consisting of substituted hydroxyaromatic ester derivatives represented by the general formulae (I) and (II) ##STR1## wherein R.sup.1 to R.sup.5 are each an organic group having 6 or more carbon atoms, a, b, d, e, k and m are from 1 to 3, c, f, g, i and j are from 0 to 3, and h is from 0 to 4, but (f+g) is from 1 to 3, and (h+i) is from 1 to 6, an additive composition for a lubricant or a fuel, and a lubricating oil composition or a fuel composition containing the above-mentioned additive.The above-mentioned additive for the lubricant or the fuel is desirable as an ashless detergent excellent in high-temperature stability in place of a metal detergent, and the lubricating oil composition or the fuel composition containing this additive can suitably be used as the lubricant or the fuel for an internal combustion engine which can comply with future exhaust gas controls.Type: GrantFiled: December 6, 1995Date of Patent: November 11, 1997Assignee: Idemitsu Kosan Co., Ltd.Inventors: Tomiyasu Minokami, Hiroaki Koshima, Harutomo Ikeda, Masahisa Gotoh