Three Or More -c(=o)o- Groups Attached Indirectly To Each Other By Nonionic Bonding Patents (Class 508/481)
  • Patent number: 9828564
    Abstract: The use as an anti-wear additive and/or friction modifier in a non-aqueous lubricant composition and/or in a fuel composition of at least one long chain fatty acid ester of a hydroxy carboxylic acid in which the long chain fatty acid has at least 4 carbon atoms and the ester is an oil-soluble ester of a mono- or poly-hydroxy carboxylic acid having 1 to 4 groups which are independently carboxylic acid groups or lower hydrocarbyl esters thereof and in which, when the hydroxy carboxylic acid is a mono-hydroxy carboxylic acid, the ester has a long chain fatty acid ester moiety of the hydroxy group of the hydroxy carboxylic acid and, when the hydroxy carboxylic acid is a poly-hydroxy carboxylic acid, the ester has independently long chain fatty acid ester moieties of one or two of the hydroxy groups of the poly-hydroxy carboxylic acid. Also, a non-aqueous lubricant composition and a fuel composition for an internal combustion engine which comprises at least one of said long chain fatty acid esters.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: November 28, 2017
    Assignee: Castrol Limited
    Inventor: Kevin Richard West
  • Patent number: 9617492
    Abstract: An object of the present invention is to provide a lubricant which has excellent lubrication performance and is able to exhibit excellent lubrication performance even when under extreme pressure conditions. The present invention relates to a complex polyester composition containing polyester obtained by condensing polyhydric alcohol having at least two hydroxyl groups, a dicarboxylic acid having 44 carbon atoms, and monohydric alcohol. Further, the present invention relates to a lubricant composition containing the complex polyester composition, and a lubricant and a production method for a complex polyester composition.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: April 11, 2017
    Assignee: FUJIFILM Corporation
    Inventors: Hiroyuki Suzuki, Yuji Terada
  • Patent number: 9481852
    Abstract: Cross blends of synthetic ester base stocks are produced from high viscosity synthetic ester base stocks having a viscosity from about iso 120 to 140 and conventional synthetic ester base stocks of varying viscosities to form base stocks having viscosities from about iso 68 to iso 220. Lubricants formed from the cross blends have sufficient miscibility with HFC refrigeration fluids with minimal use of i-C9 carboxylic acids to form the ester.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: November 1, 2016
    Assignee: The Lubrizol Corporation
    Inventor: George Psillas
  • Patent number: 9127232
    Abstract: The use as an anti-wear additive and/or friction modifier in a non-aqueous lubricant composition and/or in a fuel composition of at least one long chain fatty acid ester of a hydroxy carboxylic acid in which the long chain fatty acid has at least 4 carbon atoms and the ester is an oil-soluble ester of a mono- or poly- hydroxy carboxylic acid having 1 to 4 groups which are independently carboxylic acid groups or lower hydrocarbyl esters thereof and in which, when the hydroxy carboxylic acid is a mono-hydroxy carboxylic acid, the ester has a long chain fatty acid ester moiety of the hydroxy group of the hydroxy carboxylic acid and, when the hydroxy carboxylic acid is a poly-hydroxy carboxylic acid, the ester has independently long chain fatty acid ester moieties of one or two of the hydroxy groups of the poly-hydroxy carboxylic acid. Also, a non-aqueous lubricant composition and a fuel composition for an internal combustion engine which comprises at least one of said long chain fatty acid esters.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: September 8, 2015
    Assignee: CASTROL LIMITED
    Inventor: Kevin Richard West
  • Publication number: 20150030275
    Abstract: There is provided a gel lubricant including: a base oil containing an ester synthetic oil and a synthetic hydrocarbon oil in which the mass ratio (X:Y) of the ester synthetic oil (X) to the synthetic hydrocarbon oil (Y) is in the range of 35:65 to 75:25; and a gelatinizer which contains two kinds of styrene block copolymers and is included in the gel lubricant in an amount of 1.5% by mass to 10% by mass.
    Type: Application
    Filed: July 3, 2014
    Publication date: January 29, 2015
    Inventor: Motojiro TSUNA
  • Publication number: 20140121144
    Abstract: A bearing grease contains a base oil and a thickener. The base oil is a base oil mixture containing a polyalphaolefin and an ester. The bearing grease is used in an atmosphere of a fluorine compound refrigerant containing no hydrogen. A bearing using the bearing grease does not cause elution of grease for a long time. Further, since there is no need for a collecting system unlike lubricating oil, the arrangement around the bearing can be made compact. Thus, the bearing can be easily applied in a form of an energy recovery equipment to a vehicle or various industrial machineries.
    Type: Application
    Filed: May 31, 2012
    Publication date: May 1, 2014
    Applicants: IHI Corporation, IDEMITSU KOSAN CO., LTD.
    Inventors: Yukitoshi Fujinami, Fumihiko Yokoyama
  • Patent number: 8530396
    Abstract: 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): R1NH—CO—NH—C6H4-p-CH2—C6H4-p-NH—CO—NHR2??(1) wherein R1 and R2 may be the same or different and represent C8-C20 alkyl groups, (b) an ester synthetic oil, (c) a mineral oil and/or a synthetic hydrocarbon oil, (d) a molybdenum dialkyldithiocarbamate, (e) molybdenum disulfide, (f) a polytetrafluoroethylene, and (g) a zinc dithiophosphate compound. The grease composition of the invention reduces variations in rotational resistance of the constant velocity joint at a low temperature.
    Type: Grant
    Filed: November 20, 2012
    Date of Patent: September 10, 2013
    Assignees: Kyodo Yushi Co., Ltd., NTN Corporation
    Inventors: Mitsuhiro Kakizaki, Shinya Kondo, Shinichi Takabe, Takaaki Shibata
  • Publication number: 20130167431
    Abstract: The use as an anti-wear additive and/or friction modifier in a non-aqueous lubricant composition and/or in a fuel composition of at least one long chain fatty acid ester of a hydroxy carboxylic acid in which the long chain fatty acid has at least 4 carbon atoms and the ester is an oil-soluble ester of a mono- or poly-hydroxy carboxylic acid having 1 to 4 groups which are independently carboxylic acid groups or lower hydrocarbyl esters thereof and in which, when the hydroxy carboxylic acid is a mono-hydroxy carboxylic acid, the ester has a long chain fatty acid ester moiety of the hydroxy group of the hydroxy carboxylic acid and, when the hydroxy carboxylic acid is a poly-hydroxy carboxylic acid, the ester has independently long chain fatty acid ester moieties of one or two of the hydroxy groups of the poly-hydroxy carboxylic acid. Also, a non-aqueous lubricant composition and a fuel composition for an internal combustion engine which comprises at least one of said long chain fatty acid esters.
    Type: Application
    Filed: October 20, 2011
    Publication date: July 4, 2013
    Applicant: Castrol Limited
    Inventor: Kevin Richard West
  • Patent number: 8377858
    Abstract: 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): R1NH—CO—NH—C6H4-p-CH2—C6H4-p-NH—CO—NHR2??(1) wherein R1 and R2 may be the same or different and represent C8-C20 alkyl groups, (b) an ester synthetic oil, (c) a mineral oil and/or a synthetic hydrocarbon oil, (d) a molybdenum dialkyldithiocarbamate, (e) molybdenum disulfide, (f) a polytetrafluoroethylene, and (g) a zinc dithiophosphate compound. The grease composition of the invention reduces variations in rotational resistance of the constant velocity joint at a low temperature.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: February 19, 2013
    Assignees: Kyodo Yushi Co., Ltd., NTN Corporation
    Inventors: Mitsuhiro Kakizaki, Shinya Kondo, Shinichi Takabe, Takaaki Shibata
  • Patent number: 8377859
    Abstract: The addition of alkyl salicylic acids and esters represented by Formula I where R1?H or C12 to C22 linear alkyl group; R2?H or linear C12 to C22 carbonyl group; and R3=linear C12 to C22 alkyl group reduces the pour point of a hydrocarbon base oil. Thus, both a method for reducing the pour point of hydrocarbon oils and lubricating composition containing pour point reducing salicylates are provided. The hydrocarbon base oil in such method and composition preferably is a Group III base oil.
    Type: Grant
    Filed: July 22, 2008
    Date of Patent: February 19, 2013
    Assignee: Exxonmobil Research and Engineering Company
    Inventors: Marc-Andre Poirier, Jacob J. Habeeb, Chengrong X. Wang
  • Patent number: 6649576
    Abstract: A crankcase lubricant containing a Group III basestock in a major amount and a Group V basestock in the form of an ester in a minor amount. The lubricant also comprises a dispersant, a metal detergent, one or more other additives, and a viscosity modifier.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: November 18, 2003
    Assignee: Infineum International Inc.
    Inventors: Ian A. W. Bell, Robert Robson
  • Patent number: 6632780
    Abstract: There are provided a highly thermal conductive grease composition having both a thermal conductivity and a satisfactory dispense property, and a cooling device applied with same. The grease composition comprises from 70 to 90% by volume of an inorganic powder which is a mixture containing at least two kinds of inorganic powders different from each other in each average particle size, and from 10 to 30% by volume of a base oil containing a mineral oil or a synthetic oil, the base oil further containing a surfactant in an amount of from 0.2 to 2.0% by weight based on the weight of the inorganic powder.
    Type: Grant
    Filed: March 5, 2001
    Date of Patent: October 14, 2003
    Assignee: Hitachi, Ltd.
    Inventors: Takao Uematsu, Yutaka Ito, Takahiro Daikoku, Akio Idei, Akihiro Yasuda
  • Patent number: 6562766
    Abstract: Provided is a metal working oil composition not containing a chlorine compound. Its working capabilities in low-speed cutting or heavy cutting operations such as broaching or gun-drilling operations are comparable to or better than those of chlorine compound-containing lubricant oil. The composition comprises 100 parts by weight of a lubricant base oil that comprises from 0 to 30% by weight of (a) a mineral base oil and from 70% to 100% by weight of (b) a &pgr; electron-containing synthetic base oil, from 0.1 to 25 parts by weight of (c) a sulfur-containing extreme-pressure agent, and from 0.1 to 7 parts by weight of (d) an alkali metal and/or alkaline earth metal sulfonate.
    Type: Grant
    Filed: October 19, 2001
    Date of Patent: May 13, 2003
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Saburo Koyama, Hiroshige Matsuoka, Ryouichi Okuda
  • Publication number: 20030022798
    Abstract: A crankcase lubricant containing a Group m basestock in a major amount and a Group V basestock in the form of an ester in a minor amount. The lubricant also comprises a dispersant, a metal detergent, one or more other additives, and a viscosity modifier.
    Type: Application
    Filed: June 5, 2002
    Publication date: January 30, 2003
    Inventors: Ian A. W. Bell, Robert Robson
  • Patent number: 6465400
    Abstract: The present invention relates to a lubricant composition for a high temperature of which the amount evaporated in a thin film at a high temperature is controlled and of which the fluidity is maintained for a long period of time, and it is a lubricant composition for a high temperature which is obtained by mixing a base oil composition comprising (a) 20 to 100% by weight of a specific aromatic ester and (b) 0 to 80% by weight of another base oil with (c) 0.1 to 10% by weight, based on the total amount of the lubricant composition, of an antioxidant.
    Type: Grant
    Filed: June 21, 2001
    Date of Patent: October 15, 2002
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hideto Kamimura, Hiroshi Nagakawa
  • Patent number: 6063743
    Abstract: A lubricating grease compound formed of a basic oil and a lower proportion of a thickening agent which is a polyurea (polycarbamide) compound as well as the usual additives, in which the base oil is an ester of an aromatic di-, tri-, or tetra-carboxylic acid with one or more C.sub.7 -C.sub.18 -alkanols and the thickening agent is the reaction product of a compound of the general formulaA(B)n (I)with an amine of the general formula H.sub.2 N--R (II), whereinA=CH.sub.4 -n,B=aromatic mono- or di-isocyanate residue,n=1-3, andR=an alkyl or an alkenyl residue with 8 to 22-C-atoms or an aryl residue with 6 to 10-C-atoms,and in which the mixture of the basic oil and the thickening agent has a consistency with a penetration of 220-385, 0.1 mm.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: May 16, 2000
    Assignee: Kluber Lubrication Munchen K.G.
    Inventors: Edwin Seubert, Dieter Sohn
  • Patent number: 5780399
    Abstract: An oil-soluble polyester having a weight average molecular weight of 10,000 to 1 000,000, which is a polycondensate prepared by polycondensing the following ingredients (A), (B) and (C):(A) a divalent higher carboxylic acid ingredient,(B) a divalent alcohol ingredient comprising a glycol represented by the following formula:HO--CH.sub.2 --CR.sup.1 R.sup.2 --CH.sub.2 --OHwherein R.sup.1 and R.sup.2 represent a alkyl group, and the sum of carbon numbers in R.sup.1 and R.sup.2 is at least three, and(C) 0.1 to 15% by mole, based on the total of ingredients (A) and (B), of at least one multi-valent ingredient selected from a carboxylic acid with a valency of at least three and an alcohol with a valency of at least three. This oil-soluble polyester is useful as an additive for a lubricating oil.
    Type: Grant
    Filed: February 12, 1996
    Date of Patent: July 14, 1998
    Assignees: Nippon Zeon Co., Ltd., Harima Chemicals, Inc., Nippon Oil Company, Ltd.
    Inventors: Yoshihide Ishikawa, Shinsuke Hasegawa, Michio Miyamoto, Shizuo Kitahara, Yutaka Shikatani, Jinichi Igarashi
  • Patent number: 5773391
    Abstract: A polyol ester is described which is derived from:(A) an aliphatic or alicyclic polyol; and(B) an aliphatic monocarboxylic mixture derived from a natural vegetable oil, said acid mixture comprising at least about 72% by weight of oleic acid.The invention also relates to compositions comprising the polyol esters and at least one antioxidant, and lubricating oil compositions comprising an oil of lubricating viscosity and the polyol esters of the invention. Lubricating oil compositions comprising polyol esters of the invention, at least one antioxidant, and an oil of lubricating viscosity also are described and are particularly useful.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: June 30, 1998
    Assignee: The Lubrizol Corporation
    Inventors: Saurabh S. Lawate, Kasturi Lal
  • Patent number: 5756430
    Abstract: Mist oil lubricants are disclosed based on polycarboxylic acid esters as the base oil which have added 1 to 5% of polyisobutylene Mn 400-2500 as stray mist suppressants.
    Type: Grant
    Filed: May 13, 1997
    Date of Patent: May 26, 1998
    Assignee: Exxon Chemical Patents Inc
    Inventor: James Zielinski
  • Patent number: 5686398
    Abstract: 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: Grant
    Filed: December 6, 1995
    Date of Patent: November 11, 1997
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Tomiyasu Minokami, Hiroaki Koshima, Harutomo Ikeda, Masahisa Gotoh
  • Patent number: 5580483
    Abstract: Certain organic diesters and triesters have been found to be useful as a break-in lubricant compressors used in conjunction with HFC-based refrigeration systems. These include compositions of the formula: R.sub.1 OOC--Q--COOR.sub.2, ##STR1## and mixtures thereof, wherein Q is a straight- or branched-chain hydrocarbon group having from 2 to 10 carbon atoms and R.sub.1, R.sub.2 and R.sub.3 can be the same or different and are straight- or branched-chain hydrocarbon groups containing from 6 to 13 carbon atoms. In use as a break-in lubricant, the break-in lubricant is added and the compressor is run for about 1 to 4 hours. This lubricant is then drained.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: December 3, 1996
    Assignee: Huls America Inc.
    Inventor: Sibtain Hamid
  • Patent number: RE39382
    Abstract: The present invention relates to a lubricant composition for a high temperature of which the amount evaporated in a thin film at a high temperature is controlled and of which the fluidity is maintained for a long period of time, and it is a lubricant composition for a high temperature which is obtained by mixing a base oil composition comprising (a) 20 to 100% by weight of a specific aromatic ester and (b) 0 to 80% by weight of another base oil with (c) 0.1 to 10% by weight, based on the total amount of the lubricant composition, of an antioxidant.
    Type: Grant
    Filed: December 22, 1999
    Date of Patent: November 7, 2006
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Hideto Kamimura, Hiroshi Nagakawa