Non-carboxylate Oxygen Attached Indirectly To The -c(=o)o- Groups By Nonionic Bonding Patents (Class 508/510)
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Publication number: 20150038384Abstract: To provide a lubricating oil composition for a shock absorber for preventing wearing a piston rod and a guide bush in a shock absorber, which composition lowers the friction coefficient at the interface between bronze and chromium and reduces wear area of bronze. The lubricating oil composition for a shock absorber contains (A) a base oil composed of a mineral oil and/or a synthetic oil, and (B) a polyhydric alcohol partial ester having a C10 to C20 fatty acid residue, in an amount of 0.05 mass % to 10 mass %, with respect to the total amount of the composition.Type: ApplicationFiled: March 19, 2013Publication date: February 5, 2015Applicant: IDEMITSU KOSAN CO., LTD.Inventor: Shuichi Sakanoue
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Publication number: 20140274824Abstract: The present invention is directed toward compositions suitable for use as dielectric fluids, lubricant fluids and biodiesel fluids. Compositions described herein are obtained from a saturated, unsaturated or combinations of both monol, diol, triol or polyol acyl ester based fluid and/or a non-ester based fluid and 2,4,6-tris(di-C1-C6-alkylaminomethyl) phenol and/or the carboxylic acid salt of 2,4,6-tris(di-C1-C6-alkylaminomethyl) phenol. These compositions demonstrate improved oxidative stability and/or hydrolytic stability at higher use temperatures.Type: ApplicationFiled: March 11, 2014Publication date: September 18, 2014Applicant: E I DU PONT DE NEMOURS AND COMPANYInventors: Hari Babu SUNKARA, Raja Hari Poladi
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Publication number: 20140057818Abstract: The invention provides a lubricating composition containing an antiwear agent and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine, or a driveline device.Type: ApplicationFiled: December 16, 2011Publication date: February 27, 2014Applicant: THE LUBRIZOL CORPORATIONInventors: William R. S. Barton, Mark C. Davies, Christopher L. Friend, Ewan E. Delbridge, Patrick E. Mosier, Michael R. Sutton, Matthew D. Gieselman
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Publication number: 20130210690Abstract: The present invention provides high-HTHS value lubricating compositions that have improved fuel economy performance. The present invention also provides methods of operating an internal combustion engine utilizing such compositions. The lubricating compositions of the invention utilize butane dioic imide compounds, such as tartrimides, and may also be low sulfur, low ash and low phosphorus, providing lower wear and friction and improved fuel economy.Type: ApplicationFiled: May 6, 2011Publication date: August 15, 2013Applicant: THE LUBRIZOL CORPORATIONInventor: Mark C. Davies
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Publication number: 20130150273Abstract: A lubricating composition comprising an oil of lubricating viscosity, 1 to 1000 parts per million by weight of titanium in the form of an oil-soluble titanium-containing material, and at least one additional lubricant additive provides beneficial effects on properties such as deposit control, oxidation, and filterability in engine oils.Type: ApplicationFiled: February 28, 2011Publication date: June 13, 2013Applicant: THE LUBRIZOL CORPORATIONInventors: Mark C. Davies, Virginia A. Carrick, Jody A. Kocsis, Patrick E. Mosier, Matthew D. Gieselman, John K. Pudelski, Brent R. Dohner, Jonathan S. Vilardo
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Publication number: 20130143780Abstract: The invention provides a lubricating composition containing a compound comprising the reaction product of a polyolefin, an ethylenically unsaturated aromatic acylating agent (or carboxylic reactant), and an amine, and an oil of lubricating viscosity. The invention further relates to the use of the lubricating composition in an internal combustion engine.Type: ApplicationFiled: May 17, 2011Publication date: June 6, 2013Applicant: THE LUBRIZOL CORPORATIONInventors: Matthew D. Gieselman, Joanne L. Jones, Renee A. Eveland, Patrick E. Mosier, William Ellyatt
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Publication number: 20130065804Abstract: The present invention provides an oil composition comprising a lubricating base oil, and an alkylene oxide adduct of a hydroxy acid having a hydrophile-lipophile index of 8 to 15, wherein the oil composition is used for cutting/grinding processing by minimal quantity lubrication system. Further, the present invention provides a cutting/grinding processing method by minimal quantity lubrication system, comprising a step of supplying the oil composition of the present invention in the form of mist together with a compressed fluid to processing sites of a workpiece.Type: ApplicationFiled: December 10, 2010Publication date: March 14, 2013Applicant: JX NIPPON OIL & ENERGY CORPORATIONInventors: Junichi Shibata, Norio Sembongi, Masanori Ibi, Satoshi Suda
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Publication number: 20120156123Abstract: A water-soluble cutting fluid for slicing silicon ingots is characterized in that it includes a monoprotic or diprotic aliphatic carboxylic acid (A) having a carbon number (including the carbon in the carbonyl group) of 4˜10, and either a polyprotic organic acid (B) with ?pKa of 0.9˜2.3 as defined by the following formula (1) or a salt (BA) of said organic acid (B) as essential components: ?pKa=(pKa2)?(pKa1) ??(1) wherein the dissociation stage, at which the organic acid (B) denoted as n-protic acid HnA, becomes Hn-1A+H+ is numbered 1 with an acid dissociation constant expressed as pKa1, and the dissociation stage at which the organic acid (B) becomes Hn-2A+H+ is numbered as 2 with an acid dissociation constant expressed as pKa2.Type: ApplicationFiled: August 30, 2010Publication date: June 21, 2012Applicant: SANYO CHEMICAL INDUSTRIES, LTD.Inventors: Aki Hidaka, Yoshitaka Katsukawa, Tsuyoshi Okamoto
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Publication number: 20120004149Abstract: An ECOLOGICAL, BIODEGRADABLE, FLUID LUBRICANT AND ANTI-FREEZING COMPOSITION FOR HYDRAULIC SYSTEMS, contains glycol, corrosion inhibitors and antifoaming agents, and must be diluted in water, either before or after it is fed into the hydraulic system, including shock absorber, preferably in a concentration of 30% to 70% by volume of the composition and of 30% to 70% by volume of water.Type: ApplicationFiled: February 12, 2010Publication date: January 5, 2012Applicant: Promax Produtos Maximos S/A Industria E ComercioInventor: Roberto Andrade Galvão
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Publication number: 20110240910Abstract: Lubricant compositions comprising certain mixtures of esters of pentaerythritol, di-pentaerythritol, tri-pentaerythritol and higher pentaerythritol oligomers are ideally suited for use with CO2 as refrigerant in heat transfer devices provided that at least 30% by weight of the esters are esters of pentaerythritol oligomers containing 4 or more pentaerythritol monomer units and wherein a majority of the alkylcarboxylate groups are straight chain C3-6 alkanoyl groups, such as n-pentanoyl. Said mixture of alkylcarboxylate esters are shown to not only have higher than expected viscosity and exceptional CO2 miscibility, but also possess excellent lubricity, film building properties and load bearing properties even as part of a lubricant/CO2 solution.Type: ApplicationFiled: April 6, 2011Publication date: October 6, 2011Applicant: CHEMTURA CORPORATIONInventors: Dale Carr, Jeffrey Hutter, Richard Kelley, Roberto Urrego, Edward T. Hessell
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Publication number: 20110160109Abstract: The present disclosure generally relates to a method for lubricating conveyors using lubricant compositions with oil in water emulsions. The emulsion can be a lipophilic compound and an emulsifier. In an embodiment, the method includes applying a lubricant composition to the articulating chain and pin joint of the chain of a conveyor wherein the conveyor transports objects weighing more than about 15 kilograms, and the lubricant composition comprises an oil in water emulsion where at least one oil is not a silicone compound.Type: ApplicationFiled: December 30, 2010Publication date: June 30, 2011Inventors: Richard Oliver Ruhr, Jeffery S. Hutchison, Chad Aaron Thompson, Eric Daniel Morrison, Jason Gregory Lang, Scott P. Bennett, Kellen Wesley Chamblee
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Publication number: 20100286007Abstract: Formulations using tartaric compounds of the present invention in a low sulfur, low ash and low phosphorous lubricant lower wear, and friction and improves fuel economy.Type: ApplicationFiled: November 27, 2007Publication date: November 11, 2010Applicant: THE LUBRIZOL CORPORATIONInventors: Jody A. Kocsis, Jonathan S. Vilardo, Jason R. Brown, Daniel E. Barrer, Richard J. Vickerman, Patrick E. Mosier
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Publication number: 20100227784Abstract: Formulations using tartaric compounds of the present invention in a low sulfur, low ash and low phosphorous lubricant lower wear, and friction and improves fuel economy.Type: ApplicationFiled: May 17, 2010Publication date: September 9, 2010Applicant: Th Lubrizol CorporationInventors: Jody Kocsis, Jonathan S. Vilardo, Jason R. Brown, Daniel E. Barrer, Richard J. Vickerman, Patrick E. Mosier
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Publication number: 20100222245Abstract: Formulations using tartaric compounds of the present invention in a low sulfur, low ash and low phosphorous lubricant lower wear, and friction and improves fuel economy.Type: ApplicationFiled: May 17, 2010Publication date: September 2, 2010Applicant: Th Lubrizol CorporationInventors: Jody Kocsis, Jonathan S. Vilardo, Jason R. Brown, Daniel E. Barrer, Richard J. Vickerman, Patrick E. Mosier
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Publication number: 20100173812Abstract: Formulations using tartaric compounds of the present invention in a low sulfur, low ash and low phosphorous lubricant lower wear, and friction and improves fuel economy.Type: ApplicationFiled: March 16, 2010Publication date: July 8, 2010Applicant: The Lubrizol CorporationInventors: Jody Kocsis, Jonathan S. Vilardo, Jason R. Brown, Daniel E. Barrer, Richard J. Vickerman, Patrick E. Mosier
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Publication number: 20100093573Abstract: The invention provides a lubricating composition containing an oil of lubricating viscosity, an amine-containing friction modifier, and an ashless antiwear agent. The lubricating composition is suitable for lubricating an internal combustion engine.Type: ApplicationFiled: May 15, 2008Publication date: April 15, 2010Applicant: The Lubrizol CorporationInventors: Jody Kocsis, Patrick E. Mosier
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Patent number: 7510674Abstract: Dielectric fluids comprising oil fractions derived from highly paraffinic wax are provided. Further provided are processes for making these dielectric fluids comprising oil fractions derived from highly paraffinic wax. The dielectric fluids are useful as insulating and cooling mediums in new and existing power and distribution electrical apparatus, such as transformers, regulators, circuit breakers, switchgear, underground electrical cables, and attendant equipment.Type: GrantFiled: December 1, 2004Date of Patent: March 31, 2009Assignee: Chevron U.S.A. Inc.Inventors: John M. Rosenbaum, Nadine L. Yenni, Joseph M. Pudlak
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Publication number: 20080255012Abstract: Provided are compositions for use in Automatic Transmission Fluids, and more specifically to Automatic Transmission Fluids made using Gas-to-Liquids lubricant base oils, formulated with minimal to no polymeric Viscosity Index improvers. The automatic transmission fluids disclosed herein contain a) a lubricant base oil having a Viscosity Index greater than a Viscosity Index Factor as calculated by the following equation: Viscosity Index Factor=28×ln(Kinematic Viscosity at 100° C.)+90; b) an automatic transmission fluid additive package; and c) less than 1.0 wt % Viscosity Index improver. The automatic transmission fluid has a kinematic viscosity at ?7° C. of less than 300 mm2/s, and a kinematic viscosity at 100° C. between 5.0 and 6.0 mm2/s.Type: ApplicationFiled: February 6, 2008Publication date: October 16, 2008Applicant: CHEVRON U.S.A. INC.Inventor: Clive J. Webber
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Publication number: 20080248983Abstract: A method for improving the oil drain interval, fuel and energy efficiency of heavy duty geared machinery by lubricating said apparatus using a lubricating oil composition comprising as base oil about 20 to 75 wt % PAO 2 to 10, about 5 to 40 wt % PAO 150-1000, about 10 to 40 wt % PAO 20-100, about 5 to 20 wt % of one or more polyol ester or dibasic acid ester having a kinematic viscosity of between about 2 to 5 mm2/s at 100° C. mm2/s and further containing an effective amount of at least one gear oil additive, said lubricating oil composition having a kinematic viscosity at 100° C. between 9 and 12.5 mm2/s, and exhibiting a traction coefficient value (100°C./30 SSR value) of 0.0197 or less, a Brookfield viscosity at ?40° C. of about 26,000 cP or less a CCS viscosity at ?25° C. of 4200 cP or less, a flash point of 220° C. or higher and a NOACK volatility of 15% or less.Type: ApplicationFiled: July 13, 2007Publication date: October 9, 2008Inventors: Arjun K. Goyal, L. Oscar Farng, Kwasi Mitchell, Richard T. Spissell
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Publication number: 20040235680Abstract: A lubricant composition which protects polymeric articles, and which also inhibits corrosion of metal, the composition including at least one oxyalkylated alcohol carboxylatic acid or salt thereof, and methods of using the same. The composition is advantageous where hydrogen peroxide is also present.Type: ApplicationFiled: June 24, 2004Publication date: November 25, 2004Applicant: Ecolab Inc.Inventors: Michel Lawrence, Gerald Wichmann
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Patent number: 6802874Abstract: The invention disclosed herein relates to linear compounds in the form of oligomers or polymers containing unsubstituted or substituted phenol units and unsubstituted or substituted salicylic acid units. These compounds are useful as additives for lubricants and fuels. Metal salts of these compounds are useful as lubricant additives. A process for making these compounds is disclosed.Type: GrantFiled: June 16, 2003Date of Patent: October 12, 2004Assignee: The Lubrizol CorporationInventors: David John Moreton, Rodney John McAtee
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Publication number: 20040186027Abstract: A linear compound and a metal salt or boron-containing metal salt thereof contains one or more carboxyl-containing phenol units or derivatives thereof and one or more on average at least C18 hydrocarbyl-substituted hydroxyaromatic units or derivatives thereof connected by one or more divalent bridging groups. A concentrate contains the linear compound or metal salt thereof and an organic diluent. A lubricating oil composition contains a minor amount of the linear compound or metal salt thereof and a major amount of a lubricating oil. Additional embodiments of the invention are processes to make the linear compound and the metal salt thereof.Type: ApplicationFiled: February 19, 2004Publication date: September 23, 2004Inventors: David J Moreton, Stephen J Cook, David Cressey
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Publication number: 20040123514Abstract: The invention disclosed herein relates to linear compounds in the form of oligomers or polymers containing unsubstituted or substituted phenol units and unsubstituted or substituted salicylic acid units. These compounds are useful as additives for lubricants and fuels. Metal salts of these compounds are useful as lubricant additives. A process for making these compounds is disclosed.Type: ApplicationFiled: June 16, 2003Publication date: July 1, 2004Inventors: David John Moreton, Rodney John McAtee
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Patent number: 6706670Abstract: 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: GrantFiled: February 24, 1999Date of Patent: March 16, 2004Assignee: Solutia, Inc.Inventors: Dennis J. Kalota, Yueting Chou, Timothy K. Hirzel, David C. Silverman, Jacob S. Tou, Winsor R. Cho
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Publication number: 20040014618Abstract: A cyclic compound comprising m units of formula Ia and n units of formula (Ib) joined together to form a ring, wherein Y is a divalent bridging group which may be the same or different in each unit; R0 is H, a C1-C6 alkyl or a metal or ammonium cation; R5 is H or a C1-C6 alkyl; and j is 1 or 2; R3 is hydrogen, a hydrocarbyl or a hetero-substituted hydrocarbyl group; each of R1, R2 and R4, which may be the same or different, is hydroxyl, hydrogen, hydrocarbyl or hetero-substituted hydrocarbyl, with the proviso that at least one of R1, R2, R4 is hydroxyl, and m+n is 4 to 20, m is 1-8 and n is at least 3; and with the proviso that at least one of the conditions a) to e) below is satisfied: (a) the cyclic compound comprises at least one formula (Ia) unit in the form of a carboxylate anion, (b) the caclic compound comprises at least one formula (Ia) unit in the form of an alkaline earth metal or alkali metal carboxylate salt, (c) the cyclic compound comprises at least 2 units of formula (Ia) (d) the cyclic coType: ApplicationFiled: August 24, 2002Publication date: January 22, 2004Inventor: Spencer Edwin Taylor
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Patent number: 6596038Abstract: The invention disclosed herein relates to linear compounds in the form of oligomers or polymers containing unsubstituted or substituted phenol units and unsubstituted or substituted salicylic acid units. These compounds are useful as additives for lubricants and fuels. Metal salts of these compounds are useful as lubricant additives. The process for making these compounds involves reacting phenol units and salicylic acid units in an organic solvent.Type: GrantFiled: March 9, 2001Date of Patent: July 22, 2003Assignee: The Lubrizol CorporationInventors: David John Moreton, Rodney John McAtee
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Patent number: 6583093Abstract: A cyclic compound comprising m units of the formula Ia: and n units of the formula (Ib): joined together to form a ring, wherein Y and Y2 are divalent bridging groups which may be the same or different in each unit; R0 is H or (C1-C6) alkyl or is a metal or ammonium cation; R5 is H or (C1-C60) alkyl or OH group; j is 1 or 2; R3 is hydrogen, a hydrocarbyl or a hetero-substituted hydrocarbyl group; each of R1, R2 and R4, which may be the same or different, is hydroxyl, hydrogen, hydrocarbyl or hetero-substituted hydrocarbyl, with the provisos that i) at least one of R1, R2, R4 is hydroxyl, and m+n is 4 to 20, m is 1-8 and n is at least 3, and ii) in formula Ia at least one OH group is in the meta or para position to the COOR0 group and/or at least one R5 group is OH.Type: GrantFiled: April 1, 2002Date of Patent: June 24, 2003Assignee: BP Oil International LimitedInventors: Spencer Edwin Taylor, Michael John Wilson
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Publication number: 20030013621Abstract: The present invention relates to a method for inhibiting high temperature corrosion of corrosion prone metal surfaces by organic acid-containing petroleum streams by providing an effective corrosion-inhibiting amount of an additive aromatic compound tri-substituted with acidic functionalities selected from 5-hydroxyisophthalic acid and 1,3,5-benzenetricarboxylic acid, typically up to 1000 wppm, to the metal surface.Type: ApplicationFiled: July 13, 2001Publication date: January 16, 2003Inventors: Guido Sartori, David Craig Dalrymple, Saul Charles Blum, Liza Marie Monette, Mohsen S. Yeganeh, Andreas Vogel
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Publication number: 20020107153Abstract: A cyclic compound comprising m units of the formula Ia.Type: ApplicationFiled: April 1, 2002Publication date: August 8, 2002Applicant: BP OIL INTERNATIONAL LIMITEDInventors: Spencer Edwin Taylor, Michael John Wilson
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Publication number: 20020077254Abstract: A cyclic compound comprising m units of the formula Ia.Type: ApplicationFiled: December 11, 2000Publication date: June 20, 2002Inventors: Spencer Edwin Taylor, Michael John Wilson
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Patent number: 6399549Abstract: A cyclic compound comprising m units of the formula Ia. and n units of the formula (Ib) joined together to form a ring, wherein Y and y2 are divalent bridging groups which may be the same or different in each unit; Ro is H or (C1-C6) alkyl or is a metal or amnmonium cation; R5 is H or (C1-C60) alkyl or OH group; j is 1 or 2; R3 is hydrogen, a hydrocarbyl or a hetero-substituted hydrocarbyl group; each of R1, R2 and R4, which may be the same or different, is hydroxyl, hydrogen, hydrocarbyl or hetero-substituted hydrocarbyl, with the provisos that i) at least one of R1, R2, R4 is hydroxyl, and m +n is 4 to 20, m is 1-8 and n is at least 3, and ii) in formula Ia at least one OH group is in the meta or para position to the COORo group and/or at least one R5 group is OH.Type: GrantFiled: December 11, 2000Date of Patent: June 4, 2002Assignee: BP Oil International LimitedInventors: Spencer Edwin Taylor, Michael John Wilson
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Patent number: 6200936Abstract: This invention relates to a cyclic compound comprising m units of formula (Ia) and n units of the formula (Ib) joined together to form a ring, wherein each Y is a divalent bridging group which may be the same or different in each unit; R0 is H or an alkyl group of 1 to 6 carbon atoms; R5 is H or an alkyl group of 1 to 60 carbon atoms; j is 1 or 2; R3 is hydrogen, a hydrocarbyl or a hetero-substituted hydorcarbyl group; either R1 is hydroxy and R2 and R4 are independently either hydrogen, hydrocarbyl or hetero-substituted hydrocarbyl, or R2 and R4 are hydroxyl and R1 is either hydrogen, hydrocarbyl or hetero-substituted hydrocarbyl; m is from 1 to 8; n is at least 3, and m +n is 4 to 20. This invention also relates to metal salts of the foregoing compound, especially overbased metal salts. The invention also relates to additive compositions, finished lubricating oil compositions and fuel compositions containing the foregoing compound or metal salt thereof.Type: GrantFiled: May 26, 1999Date of Patent: March 13, 2001Assignee: The Lubrizol CorporationInventor: David John Moreton
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Patent number: 6048825Abstract: A lubricant composition suitable as a helicopter transmission lubricant comprises a synthetic base stock of viscosity in the range 5.0 to 10.0 cSt at 100.degree. C., an antioxidant component, a neutral organic phosphate component, a dicarboxylic acid component, a monocarboxylic acid component, a triazole component and a phosphorus containing extreme pressure additive.Type: GrantFiled: March 3, 1999Date of Patent: April 11, 2000Assignee: Castrol LimitedInventors: Andrew J. Markson, John W. A. Pragnell, Mark A. Edwards
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Patent number: 6004256Abstract: This invention discloses a process for making polymerizable and/or reactable vinyl monomer oligomers with narrow molecular weight distributions using catalytic distillation and a catalyst situated in an immobile catalyst bed in a reaction zone of the distillation column reactor. The polymerizable oligomer products comprise at least 50% by weight of a single molecular weight oligomer fraction.Type: GrantFiled: May 26, 1995Date of Patent: December 21, 1999Inventors: Phillip Townsend, Aaron T. Doughty
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Patent number: 5972855Abstract: A soybean oil based hydraulic fluid of which the soybean oil is less than 85% by weight and the fatty acid profile of the hydraulic fluid includes about 0.12% C24:0. The base oil is hydrogenated to produce maximum possible stability of the soybean oil, and is winterized to remove crystallized fats and improve the pour point of the base oil without the necessity of heating the oil. The base oil is then combined with a hydrocarbon based additive package containing materials specifically designed for mobile equipment application including friction and anti-chatter materials, needed for wet clutches and brakes.Type: GrantFiled: October 14, 1997Date of Patent: October 26, 1999Inventor: Lou A. T. Honary
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Patent number: 5908815Abstract: A heat resistant grease composition containing a fluorosilicone base oil, a fluororesin thickener and an additive, that has a reduced gelling, reduced base oil evaporation, and stable heat resistance.Type: GrantFiled: April 22, 1997Date of Patent: June 1, 1999Assignee: Dow Corning Asia, LTD.Inventor: Chih-Chang Shen
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Patent number: 5783531Abstract: A method is disclosed for improving the thickener yield in soap thickened polyalphaolefin base oil greases comprising the steps of (a) producing a simple or complex soap thickener in a quantity of a first PAO of viscosity lower than that of the base oil component in the final grease composition to produce a thickened PAO and (b) adding to the thickened PAO a quantity of a second PAO of viscosity higher than that desired of the base oil component in the final grease composition sufficient to produce a final grease product having the desired base oil viscosity.Type: GrantFiled: March 28, 1997Date of Patent: July 21, 1998Assignee: Exxon Research and Engineering CompanyInventors: David Leslie Andrew, Brian Leslie Slack
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Patent number: 5750046Abstract: A method of maintaining and servicing air conditioning systems and compositions therefor are provided whereby newer, more environmentally friendly R-134a refrigerant gas is substituted for the older R-12 and R-22 types. In addition, a method of flushing and internal lubrication of the system is presented, along with a new flush solvent and a new lubricant composition for use with an R-134a refrigerant gas.Type: GrantFiled: May 27, 1997Date of Patent: May 12, 1998Inventor: William B. Wheeler
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Patent number: 5681506Abstract: A corrosion inhibiting lubricating composition comprises:(a) a synthetic ester base stock;(b) at least one aromatic amine antioxidant;(c) a neutral organic phosphate of the formula (R.sup.1 O).sub.3 PO where R.sup.1 is a tolyl, phenyl, xylyl, alkyl or cycloalkyl group, the alkyl or cycloalkyl group having up to 10 carbon atoms;(d) a saturated or unsaturated dicarboxylic acid of the general formula ##STR1## wherein x+y+z is an integer in the range from 2 to 22 inclusive and where at least one of the groups R.sub.1 to R.sub.5 is a carboxylic acid group; or a dicarboxylic acid of one of the three formulae ##STR2## (e) a straight or branched chain saturated or unsaturated monocarboxylic acid which is optionally sulphurised or an ester of such an acid; and(f) a triazole of the formula: ##STR3## or a triazole selected from 1,2,4 triazole, 1,2,3 triazole, 5-anilo-1,2,3,4-thiatriazole, 3-amino-1,2,4 triazole, 1-H-benzotriazole-1-yl-methylisocyanide, methylene-bis-benzotriazole and naphthotriazole.Type: GrantFiled: May 9, 1994Date of Patent: October 28, 1997Assignee: Castrol LimitedInventors: John William Anthony Pragnell, Andrew Jonathan Markson, Mark Anthony Edwards
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Patent number: 5536425Abstract: Novel perfluoropolyether derivatives are described which are obtained from perfluoropolyethers having a carboxyl group at one or both ends and monoamines or diamines. The derivative is useful as a lubricant owing to its significantly improved lubricity. The lubricity is shown under severe high or low temperature and humidity conditions over a long term. The derivative is especially useful as a lubricant for magnetic recording mediums of the coating and metal thin film types.Type: GrantFiled: May 3, 1995Date of Patent: July 16, 1996Assignee: Sony CorporationInventors: Hirofumi Kondo, Toshiharu Uchimi