Oxygen Or Sulfur Attached Indirectly To The Nitrogen By Nonionic Bonding Patents (Class 508/561)
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Patent number: 8747650Abstract: Provided are formulations, methods of making, and methods of using one or more Fischer-Tropsch Base Oils of the present invention in a low sulfur, low sulfated ash, and low phosphorus engine lubricant to enhance thermal stability of the lubricant as well as the high-temperature performance of an engine housing the lubricant.Type: GrantFiled: December 21, 2006Date of Patent: June 10, 2014Assignee: Chevron Oronite Technology B.V.Inventors: Jeroen Van Leeuwen, Peter Kleijwegt
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Patent number: 8703673Abstract: A method of improving the compatibility of an overbased detergent with other additives in a lubricating oil composition. The method includes the step of the using a detergent have a degree of carbonation of greater than 85%.Type: GrantFiled: April 10, 2008Date of Patent: April 22, 2014Assignee: Infineum International LimitedInventor: Philip Skinner
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Publication number: 20140107000Abstract: The present invention relates to functional fluid compositions containing antioxidants, and specifically stable compositions containing antioxidants with limited solubility in and/or limited compatibility with the functional fluids with which they are used. In particular the present invention deals with functional fluids used in internal combustion engines, such as engine oils, and antioxidants containing a phenolic or benzoic group, where the antioxidant is present in the functional fluid composition at levels that would otherwise cause the composition to be unstable and/or hazy.Type: ApplicationFiled: May 15, 2012Publication date: April 17, 2014Applicant: THE LUBRIZOL CORPORATIONInventors: Danielle N. Ivancic, James D. Burrington, Ewan E. Delbridge
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Publication number: 20130288939Abstract: A lubricant composition comprises a cycloaliphatic amine alkoxylate and a base oil selected from (a) a polyalkylene glycol; (b) a polyalphaolefin; (c) a naphthenic compound; and (d) combinations thereof; provided that the cycloaliphatic amine alkoxylate and the base oil are miscible. The lubricant may exhibit a viscosity change at 40° C. of less than 5 percent (%) after 13 days at 120° C. in dry air, indicating significant thermoxidative stability with minimal or no aromatic content, thereby enabling use of Groups II and III base oils, in particular, without reduced toxicity and/or quality concerns as compared with Group I base oil lubricants.Type: ApplicationFiled: September 20, 2011Publication date: October 31, 2013Applicant: DOW GLOBAL TECHNOLOGIES LLCInventors: Martin R. Greaves, Evelyn A. Zaugg-Hoozemans, Timothy Morley
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Publication number: 20130281332Abstract: The present invention relates to the use of an additive composition that contains the combination of two specific types of antioxidants with one or more of four specific types of dispersants in a Group II and/or Group III base oil-containing lubricating composition. The lubricating composition of the present invention provides improved cleanliness in steam and gas turbine systems. The invention further relates to the process to make the novel additive composition and its use in industrial fluids.Type: ApplicationFiled: January 9, 2012Publication date: October 24, 2013Applicant: THE LUBRIZOL CORPORATIONInventors: Betsy J. Butke, Allan R. Barber
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Publication number: 20130252865Abstract: A lubricating oil composition comprising a major amount of oil of lubricating viscosity and a minor amount of one or more compounds of formula (I): wherein R1, R2, R3, R4 and R5 independently represent alkyl or substituted alkyl having no aryl substituent.Type: ApplicationFiled: September 21, 2012Publication date: September 26, 2013Inventors: Joseph P. Hartley, Gabriele Candido
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Publication number: 20130237466Abstract: The present invention relates to the use of amines and/or Mannich adducts as detergents and/or dispersants in fuel and lubricant compositions for direct-injection gasoline engines. The invention further relates to fuel and lubricant compositions which comprise at least one such Mannich adduct, and also a bisaminoalkylated Mannich adduct.Type: ApplicationFiled: April 25, 2013Publication date: September 12, 2013Applicant: BASF SEInventors: Arno LANGE, Hans Peter RATH, Marc WALTER, Marco BERGEMANN, Helmut SCHMIDT
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Publication number: 20130165359Abstract: Disclosed herein is a post-treated salt of a sulfurized alkyl-substituted hydroxyaromatic composition which is a reaction product of (a) a salt of a sulfurized alkyl-substituted hydroxyaromatic composition, wherein the alkyl-substituted hydroxyaromatic compound is derived from alkylation of a hydroxyaromatic compound with one or more olefins comprising C9 to C18 oligomers of monomers selected from propylene, butylene or mixtures thereof, (b) a source of an aldehyde and (c) a primary and/or secondary monoamine compound having at least one active hydrogen. The post-treated salt of a sulfurized alkylhydroxyaromatic composition disclosed herein has a reduced content of unsulfurized alkyl-substituted hydroxyaromatic compound and its unsulfurized metal salt as compared to the content, by combined mass, of the unsulfurized alkyl-substituted hydroxyaromatic compound and its unsulfurized metal salt present in the non-post-treated salt of a sulfurized alkyl-substituted hydroxyaromatic composition.Type: ApplicationFiled: December 27, 2012Publication date: June 27, 2013Applicant: Chevron Oronite Company LLCInventors: Andrew R. Gibbs, Curtis Campbell
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Patent number: 8338345Abstract: Water-based metalworking fluid contains: (A) alkanolamine represented by the following formula (1) and/or (B) alkanolamine represented by the following formula (2); and (C) 2-pyridylthio-1-oxide salt. In the formula (1): each R1 represents hydrogen or an alkyl group having 1 to 3 carbon atoms; n represents 2 or 3; and plural R1 may be mutually the same or different on condition that not all R1 represent hydrogen. In the formula (2): R2 represents an alkyl group having 1 to 10 carbon atoms; and Z1 and Z2 each represent an alkylene group having 2 to 8 carbon atoms.Type: GrantFiled: July 15, 2008Date of Patent: December 25, 2012Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hiroshi Kawasaki, Fumiaki Takagi
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MACROMOLECULAR AMINE-PHENOLIC ANTIOXIDANT COMPOSITIONS, PROCESS TECHNOLOGY THEREOF, AND USES THEREOF
Publication number: 20120115764Abstract: This invention relates to novel macromolecular amine-phenolic compositions having oxidation inhibition characteristics that are exhibited when added to organic material normally susceptible to oxidative degradation in the presence of air or oxygen, such as petroleum products, synthetic polymers, and elastomeric substances.Type: ApplicationFiled: October 17, 2007Publication date: May 10, 2012Applicant: Albemarle CorporationInventors: Mahmood Sabahi, Vincent J. Gatto, Hassan Y. Elnagar -
Patent number: 8017805Abstract: Diaromatic amine compounds or an isomer or isomeric mixture thereof is provided having the general formula: wherein n, m, R, R1, R2, R3, R4 and R5 are as defined herein are provided. Lubricating oil compositions and stabilizer-containing compositions containing the diaromatic amine compounds are also provided.Type: GrantFiled: October 10, 2006Date of Patent: September 13, 2011Assignee: Chemtura CorporationInventor: Theodore E. Nalesnik
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Publication number: 20110065619Abstract: A composition is provided that contains a major amount of a base oil and a minor amount of at least one butylene oxide-modified alkyl-bis-ethoxylated monoamine, wherein the alkyl group have carbon atoms in the range of 8 to 22 and ethylene oxide to butylenes oxide is in a ratio in the range of about 3:1 to about 2:1. The composition provides improved friction modification in fuel and in lubricating oils.Type: ApplicationFiled: August 17, 2010Publication date: March 17, 2011Inventor: Joseph Michael Russo
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Publication number: 20100160195Abstract: Aniline compounds useful as ashless TBN sources for lubricating oil compositions that are compatible with fluoroelastomeric engine seal materials, and lubricating oil compositions containing such aniline compounds.Type: ApplicationFiled: December 23, 2008Publication date: June 24, 2010Inventors: Jie Cheng, Jacob Emert
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Publication number: 20100069273Abstract: A method of improving the compatibility of an overbased detergent with other additives in a lubricating oil composition. The method includes the step of the using a detergent have a degree of carbonation of greater than 85%.Type: ApplicationFiled: April 10, 2008Publication date: March 18, 2010Inventor: Philip Skinner
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Publication number: 20100009875Abstract: A lubricating oil composition comprising: (A) a base stock; and (B) a liquid additive package. The liquid additive package comprises: (i) an alkylated diphenylamine; (ii) at least 5 weight % of a phenyl naphthylamine, based on the weight of the additive package; and (iii) a sulfur-containing phenol.Type: ApplicationFiled: June 2, 2009Publication date: January 14, 2010Applicant: Chemtura CorporationInventor: Jun DONG
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Patent number: 7566687Abstract: Improved desulfurization compositions are provided for removing substantial fractions of sulfur, sulfur complexes, and sulfur compounds from liquid hydrocarbons such as crude oil and fuels. The preferred compositions comprise respective quantities of an alkylphenol ethoxylate, an amine, and an alkali metal nitrite. The compositions may be contacted with liquid hydrocarbons to achieve high levels of desulfurization.Type: GrantFiled: October 12, 2005Date of Patent: July 28, 2009Assignee: Jacam Chemical, LLCInventors: Gene H. Zaid, Beth Ann Wolf, Gary W. Zorn
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Publication number: 20090176672Abstract: A polyalkene dispersant comprised of low MW polyalkene having an average molecular weight range of about 300 to about 10,000 and an ethylenically-unsaturated, aliphatic or aromatic, nitrogen- and oxygen-containing graftable monomer and methods of making the same are disclosed. The monomers are formed by reacting an acylating agent with amines having one or more primary or secondary amine to form a reaction product. Graft polyalkene dispersants comprising such monomers are formed by grafting the reaction product to the polyalkene backbone. Also described is lubricating oil comprising base oil and the dispersant polyalkene as described above.Type: ApplicationFiled: February 23, 2009Publication date: July 9, 2009Inventor: Irwin L. Goldblatt
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Patent number: 7452851Abstract: Lubricant compositions having improved anticorrosion performance comprising an extreme pressure compound comprising a sulfur-containing compound, an antiwear compound comprising a phosphorous-containing compound, an alkylene amine friction modifying compound, a dispersant compound containing basic nitrogen, and a diluent or base oil as applicable, wherein any of compounds other than the diluent or base oil can be the same or different compounds. These lubricant compositions provide improved anticorrosion resistance and fatigue performance, which prolongs service lives of lubricated parts, especially those used in outdoor applications.Type: GrantFiled: October 24, 2003Date of Patent: November 18, 2008Assignee: Afton Chemical CorporationInventors: Mark T. Devlin, Helen T. Ryan
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Patent number: 7439213Abstract: A composition of a major amount of an oil of lubricating viscosity; a secondary or tertiary amine being represented by the formula R1R2NR3 wherein R1 and R2 are alkyl groups of at least 6 carbon atoms and R3 is hydrogen, a hydrocarbyl group, a hydroxyl-containing alkyl group, or an amine-containing alkyl group; and a dispersant, provides high static coefficients of friction and a durable positive slope during oxidative and mechanical stressing, particularly as a friction component of an automatic transmission.Type: GrantFiled: October 19, 2004Date of Patent: October 21, 2008Assignee: The Lubrizol CorporationInventors: Craig D. Tipton, Mark R. Baker, Shreyasi Lahiri
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Publication number: 20080153722Abstract: Provided are formulations, methods of making, and methods of using one or more Fischer-Tropsch Base Oils of the present invention in a low sulfur, low sulfated ash, and low phosphorus engine lubricant to enhance thermal stability of the lubricant as well as the high-temperature preformance of an engine housing the lubricant.Type: ApplicationFiled: December 21, 2006Publication date: June 26, 2008Inventors: Jeroen Van Leeuwen, Peter Kleijwegt
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Publication number: 20080146473Abstract: Provided are formulations, methods of making, and methods of using one or more reaction products of polyisobutylenes and monounsaturated acylating agents of the present invention in a low sulfur, low sulfated ash, and low phosphorus lubricant to enhance piston cleanliness in internal combustion engines.Type: ApplicationFiled: December 19, 2006Publication date: June 19, 2008Inventors: Jeroen Van Leeuwen, Yoshitaka Takeuchi
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Patent number: 7381319Abstract: Amine and amine blend compositions neutralize acid environments in distillation overheads of hydrocarbon processing facilities. The neutralizers are composed of certain combinations of amines which are relatively stronger bases and more resistant to hydrochloride salt formation. The amines, when blended together, provide greater neutralization of condensed water present without increased potential for corrosive hydrochloride salt formation.Type: GrantFiled: August 31, 2004Date of Patent: June 3, 2008Assignee: Baker Hughes IncorporatedInventors: Joel E. Lack, George G. Duggan, Michael J. Zetlmeisl
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Publication number: 20080096777Abstract: The present invention is directed to a soluble oil composition capable of forming stable emulsions exhibiting superior performance and possessing excellent utility as cutting oil for machines. The composition comprises an overbased alkaline earth metal sulfonate possessing anti-wear properties.Type: ApplicationFiled: October 24, 2006Publication date: April 24, 2008Inventors: Michael T. Costello, Igor Riff
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Publication number: 20080090743Abstract: The present application is directed to compounds that are the reaction product of (i) a hydrocarbyl phenol, (ii) a hindered phenol; (iii) an diaryldiamine and (iv) an aldehyde. Methods of making and using the compounds of the present application are disclosed.Type: ApplicationFiled: October 17, 2006Publication date: April 17, 2008Inventor: Naresh C. Mathur
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Patent number: 6869919Abstract: Soot induced kinematic viscosity increase of lubricating oil compositions for diesel engines equipped with EGR systems can be ameliorated by selection of viscosity modifier, lubricating oil flow improvers, detergents and/or dispersants.Type: GrantFiled: September 10, 2002Date of Patent: March 22, 2005Assignee: Infineum International Ltd.Inventors: Andrew J. D. Ritchie, Jai G. Bansal, Jacob Emert, Glen P. Fetterman, Antonio Gutierrez, Matthew D. Irving, Christopher J. Locke, Michael T. Minotti
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Patent number: 6833484Abstract: The present invention relates blended hydrocarbonaceous products comprising Fischer Tropsch derived products that resist oxidation and to methods of inhibiting oxidation in Fischer Tropsch products. The present invention also relates to Fischer Tropsch products containing an effective amount of a petroleum-derived hydrocarbonaceous product such that the Fischer Tropsch product resists oxidation.Type: GrantFiled: June 15, 2001Date of Patent: December 21, 2004Assignee: Chevron U.S.A. Inc.Inventor: Dennis J. O'Rear
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Publication number: 20040198615Abstract: A lubricating composition containing the reaction product (a) of an aldehyde, amine and a di-secondary alkyl hindered phenol and at least one additive selected from the group consisting of hydrocarbyl diphenylamines, sterically hindered phenols other than component (a), metal hydrocarbyl dithiophosphates, sulphurised olefins and mixtures thereof. The composition has antioxidant properties for internal combustion engines without the bioaccumulation of tris-tert-butyl phenol.Type: ApplicationFiled: April 4, 2003Publication date: October 7, 2004Applicant: The Lubrizol CorporationInventors: Christopher L. Friend, Douglas M. Barr, Jolanta Z. Adamczewska
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Patent number: 6762208Abstract: The present invention pertains to a method for controlling the foaming of a waterborne composition or an industrial process by the incorporation of a foam controlling agent. The method comprises utilizing as the foam controlling agent a compound of the formula: HOR1R3C—[CH2]n—CR2R4OH R1 and R2 are independently selected from the group of alkyl radicals having from 3 to 6 carbon atoms. R3 and R4 are independently alkyl radicals having from 1 to 2 carbon atoms. n is an integer from 1 to 6. The compound generates an initial (t=0 min.) or a final (t=10 min.) foamed density at least 30% greater than that of a 0.5 wt % aqueous solution of a 12 mole ethoxylate of a C12-C15 primary alcohol (C12-C15E12) when added at 0.2 wt % to the C12-C15E12 solution. The present invention also pertains to an aqueous composition comprising the foam controlling agent.Type: GrantFiled: October 1, 2001Date of Patent: July 13, 2004Assignee: Air Products and Chemicals, Inc.Inventors: Joel Schwartz, Charles James Reader, Wim Peter Stout, Yong Jin Lee, Christine Marie Kretz
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Patent number: 6750185Abstract: The invention provides a lubricant oil composition useful for reduction in friction loss and improvement in fuel economy in internal combustion engines, particularly, a lubricant oil composition for internal combustion engines exhibiting an excellent friction reducing effect even in a diesel engine equipped with EGR accompanied with an increase in soot content in oil. The invention is a lubricant composition for internal combustion engines comprising a lubricant base oil consisting of a mineral oil and/or synthetic oil or the like incorporated with 1 wt % or more, based on the total weight of the lubricant oil composition, a nonionic surfactant with alkylene oxide added thereto consisting of at least one compound having an HLB value of 15 or more and a molecular weight of 900 or more, and a friction reducing method for internal combustion engines using this lubricant oil composition.Type: GrantFiled: March 29, 2002Date of Patent: June 15, 2004Assignee: TonenGeneral Sekiyu K.K.Inventors: Sonmin Ryu, Shuzo Nemoto, Satoshi Ogano
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Publication number: 20040048753Abstract: Soot induced kinematic viscosity increase of lubricating oil compositions for diesel engines equipped with EGR systems can be ameliorated by selection of viscosity modifier, lubricating oil flow improvers, detergents and/or dispersants.Type: ApplicationFiled: September 10, 2002Publication date: March 11, 2004Inventors: Andrew J.D. Ritchie, Jai G. Bansal, Jacob Emert, Glen P. Fetterman, Antonio Gutierrez, Matthew D. Irving, Christopher J. Locke, Michael T. Minotti
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Publication number: 20040038835Abstract: Formulated engine oils that comprise certain 1,2,4-triazole metal deactivators are especially non-aggressive towards lead engine parts such as bearings. The inclusion of certain 1,2,4-triazole compounds allows the co-use of corrosive additives such as sulfur-containing additives and vegetable oil-derived friction modifiers while at the same time meeting ASTM D 4485 specifications.Type: ApplicationFiled: June 19, 2003Publication date: February 26, 2004Inventors: David E. Chasan, Sunray Difrancesco
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Publication number: 20030191033Abstract: The invention provides a lubricant oil composition useful for reduction in friction loss and improvement in fuel economy in internal combustion engines, particularly, a lubricant oil composition for internal combustion engines exhibiting an excellent friction reducing effect even in a diesel engine equipped with EGR accompanied with an increase in soot content in oil. The invention is a lubricant composition for internal combustion engines comprising a lubricant base oil consisting of a mineral oil and/or synthetic oil or the like incorporated with 1 wt % or more, based on the total weight of the lubricant oil composition, a nonionic surfactant with alkylene oxide added thereto consisting of at least one compound having an HLB value of 15 or more and a molecular weight of 900 or more, and a friction reducing method for internal combustion engines using this lubricant oil composition.Type: ApplicationFiled: March 29, 2002Publication date: October 9, 2003Inventors: Sonmin Ryu, Shuzo Nemoto, Satoshi Ogano
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Patent number: 6495496Abstract: Low molecular weight Mannich base condensates of hydroxy aromatic compounds, an aldehyde; and an amine, wherein the combined number of substituent carbon atoms does not exceed 80. Such compounds are useful as soot dispersants in lubricating oils when used alone, or in combination with high molecular weight dispersants.Type: GrantFiled: December 22, 2000Date of Patent: December 17, 2002Assignee: Infineum International Ltd.Inventors: Antonio Gutierrez, Mark G. Stevens, Ricardo A. Bloch, Robert A. Kleist
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Publication number: 20020115576Abstract: Low molecular weight Mannich base condensates of hydroxy aromatic compounds, an aldehyde; and an amine, wherein the combined number of substituent carbon atoms does not exceed 80. Such compounds are useful as soot dispersants in lubricating oils when used alone, or in combination with high molecular weight dispersants.Type: ApplicationFiled: December 22, 2000Publication date: August 22, 2002Inventors: Antonio Gutierrez, Mark G. Stevens, Ricardo A. Bloch, Robert A. Kleist
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Patent number: 6281173Abstract: A two-stroke motorcycle lubricant comprising a base oil having a viscosity at 100° C. of less than 8 cSt and a pour point below −30° C., preferably below −39° C. The two-stroke motorcycle lubricant further comprises a detergent system based on an ashless, oil-soluble amine. The two-stroke motorcycle lubricant exhibits high levels of cleanliness and low levels of exhaust smoke, whilst maintaining high load carrying capacity. The two-stroke motorcycle lubricant may be dyed.Type: GrantFiled: January 19, 2000Date of Patent: August 28, 2001Assignee: Castrol LimitedInventors: Yas Tanaka, Paul Fritz-Johnson, Howard Silver, David James Atkinson
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Patent number: 6242394Abstract: A lubricant composition suitable for fuel injected two-stroke cycle engines includes an oil of lubricating viscosity, an amount, sufficient to reduce or prevent piston scuffing, of a mixture of (A) at least one phenol selected from (A-1) an aminophenol and (A-2) a reaction product of a nitrophenol and an amino compound, and (B) at least one Mannich dispersant, amine dispersant, nitrogen-containing carboxylic dispersant, or ester dispersant. The composition further includes an amount, sufficient to reduce degradation of the lubricant composition upon exposure to oxygen or oxides of nitrogen, of a nitrogen-containing inhibitor, a hindered phenol inhibitor, or a sulfur-containing organic inhibitor.Type: GrantFiled: November 23, 1994Date of Patent: June 5, 2001Assignee: The Lubrizol CorporationInventor: William B. Chamberlin, III
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Patent number: 6235687Abstract: Lubricating oils exhibiting anti rust properties are obtained by adding to the lubricating oil an acidic anti rust additive and an acid scavenger such as carbodiimide, in a specific sequence.Type: GrantFiled: September 21, 1999Date of Patent: May 22, 2001Assignee: Exxon Research and Engineering CompanyInventors: Todd Timothy Nadasdi, William Nelson Hayter
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Patent number: 6133209Abstract: The present invention relates to at least simply unsaturated polyolefins with a number mean molecular weight in the range of 400 to 1,500 dalton and a dispersibility of M.sub.W /M.sub.N <1.2, obtained through catalytic dimerization from at least simply unsaturated olefin-oligomers, as well as to the method for their production. The present invention further relates to derivatives of these polyolefins which can be obtained by functionalizing at least a double link of the polyolefin. The invention also relates to the use of polyolefins and/or functionalization products as additives for fuels or lubricants.Type: GrantFiled: July 27, 1999Date of Patent: October 17, 2000Assignee: BASF AktiengesellschaftInventors: Hans Peter Rath, Irene Trotsch-Schaller, Dietmar Posselt, Bernhard Geissler, Johann-Peter Melder, Joachim Rosch
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Patent number: 5663127Abstract: A lubricating composition containing about 0.1-10 weight percent of a perfluoropolyether lubricant containing perfluoropolyether molecules having at least one hydrogen-containing end group per molecule, and about 99.9-90 weight percent of a liquid, perfluorinated, nonaromatic cyclic organic solvent or mixture of such solvents is provided.Type: GrantFiled: July 29, 1994Date of Patent: September 2, 1997Assignee: Minnesota Mining and Manufacturing CompanyInventors: Richard M. Flynn, John G. Owens
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Patent number: 5633222Abstract: Secondary amines having the formula (I): R(Y).sub.s NHX, in which R is a hydrocarbon group having 2-12 carbon atoms, Y is the group --CH(OH)CH.sub.2 --, --OCH.sub.2 CH(OH)CH.sub.2 -- or --O(CH.sub.2).sub.3, X is an alkyl group having 2-3 carbon atoms and substituted with hydroxyl groups in the 2-position or in the 2 - and 3-positions, and s is 0 or 1 with the condition that when s is 0, then X is an alkyl group substituted in the 2- and 3-positions, or a salt thereof, are used as anticorrosion and antimicrobial agents. They are suitable to be incorporated in aqueous, alkaline, industrial fluids. An aqueous, alkaline metal working fluid is also disclosed.Type: GrantFiled: July 25, 1995Date of Patent: May 27, 1997Assignees: Berol Nobel AB, Castrol LimitedInventors: Rolf Skold, Patrick J. Ruane
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Patent number: 5624890Abstract: A lubricating oil composition for two-stroke cycle cylinder injection engines contains as essential ingredients: (A): a base oil containing (1) 10-30% by mass of polybutene with number-average molecular weight 250-350 on the basis of a total amount of the base oil, (2) 30-60% by mass of polybutene with number-average molecular weight 450-550 on the basis of the total amount of the base oil, and (3) 15-40% by mass of mineral oil and/or a synthetic oil, which is other than polybutene, with kinematic viscosity 2-35 mm.sup.2 /s at 100.degree. C., on the basis of the total amount of the base oil; and (B): 2-15 parts by mass of alkylaminophenol having an alkyl group with 8-400 carbon atoms relative to 100 parts by mass of the base oil.Type: GrantFiled: November 27, 1995Date of Patent: April 29, 1997Assignees: Nippon Oil Company, Ltd, Yamaha Hatsudoki Kabushiki KaishaInventors: Mineo Kagaya, Kazuo Miyazawa
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Patent number: 5547593Abstract: Disclosed is a lubricant oil composition comprising: (A) a fluorine-containing aromatic compound, and(B) an alkyl- or alkyl derivative-substituted aromatic compound having a kinetic viscosity of from 0.1 to 500 cSt as measured at 40 .degree. C., wherein:the compound (A) is represented by the formula:R(XR.sub.f).sub.n (A)wherein X represents an oxygen or a sulfur atom; n is an integer of from 1 to 4; R represents an n-valent, unsubstituted or substituted aromatic group having from 6 to 60 carbon atoms; and R.sub.f represents an unsubstituted or partially substituted fluorocarbon group having from 1 to 25 carbon atoms; andthe compound (B) comprises at least one substituted aromatic nucleus, wherein a substituent is an unsubstituted or substituted alkyl group having from 1 to 30 carbon atoms, or a derivative thereof. The lubricant oil composition having a kinetic viscosity of from 2 to 500 cSt as measured at 40.degree. C.Type: GrantFiled: August 11, 1994Date of Patent: August 20, 1996Assignee: Asahi Kasei Kogyo Kabushiki KaishaInventors: Kenichi Sanechika, Hiroyuki Fukui, Masanori Ikeda