Organic Nitrogen Compound Salt Of Phosphorus Acid, Or Organic Nitrogen Compound Is Present With Phosphorus Acid Patents (Class 508/436)
-
Publication number: 20040087450Abstract: Disclosed are methods and lubricant compositions for reducing wear in internal combustion engines lubricated with a low phosphorous content lubricating oil. The lubricant compositions of this invention comprise a synergistic combination of a dispersed, hydrated, alkali metal borate and at least one phosphorous-containing compound wherein the total phosphorous employed in the composition is no more than about 0.08 weight percent based on the total weight of the composition.Type: ApplicationFiled: October 31, 2002Publication date: May 6, 2004Inventor: Alexander B. Boffa
-
Publication number: 20040072702Abstract: The invention concerns a method for cold rolling metals using an aqueous lubricant comprising: (1) at least a mixture based on at least an acid selected among saturated or unsaturated mono- or poly-carboxylic acids, comprising 5 to 40 carbon atoms; at least an acid phosphate ester of formula (RO)x—P(═O)(OH)x′, wherein: R is a hydrocarbon radical, optionally polyalkoxylated; x and x′ being equal to 3; the carboxylic acid and/or the acid phosphate ester being optionally neutralised by an organic or mineral base; and (2) at least a natural or synthetic wax exhibiting a melting point not less than 50° C. and having an average particle size ranging between 0.5 and 10 &mgr;m. The use of said lubricant enables to increase the productivity of the method by at least 15% relative to a method using a conventional lubricant.Type: ApplicationFiled: November 17, 2003Publication date: April 15, 2004Inventors: Dominique Raison, Jean-Guy Le Helloco
-
Publication number: 20040038834Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, (A) an antiwear improving amount of at least one molybdenum containing composition, (B) at least one phosphorus antiwear or extreme pressure agent, and (C) at least one dispersant, provided that the lubricating composition is free of polysulfurized olefins. The lubricating compositions have improved antiwear properties. When the lubricating composition is used in a manual transmission, the amount of brass wear is reduced.Type: ApplicationFiled: August 21, 2003Publication date: February 26, 2004Inventor: Michael P. Gahagan
-
Publication number: 20040023819Abstract: Disclosed are methods and lubricant compositions for reducing wear in internal combustion engines lubricated with a low phosphorus content lubricating oil. The lubricant compositions of this invention comprise a synergistic combination of a complex of a molybdenum/nitrogen containing compound and at least one phosphorus-containing compound wherein the total phosphorus employed in the composition is no more than about 0.06 weight percent based on the total weight of the composition.Type: ApplicationFiled: August 1, 2002Publication date: February 5, 2004Inventor: Alexander B. Boffa
-
Patent number: 6645920Abstract: A lubricating oil composition containing in oxidation inhibitor package, a rust inhibitor and metal deactivator is used in industrial fluids. The oxidation package contains alkylated diphenylamines, substituted hydrocarbyl monosulphides and optionally sterically hindered phenols. The rust inhibitor contains at least 1 of alkylated amine salts of alkylphosphoric acid, dialkyldithiophosphoric acid or hydrocarbyl aryl sulphonic acids. The metal deactivator is 5-methylbenzotriazole.Type: GrantFiled: November 14, 2002Date of Patent: November 11, 2003Assignee: The Lubrizol CorporationInventor: Betsy J. Butke
-
Patent number: 6638898Abstract: A process for the preparation of multi-functional additive, amino di(alkylcyclohexyl) phosphorodithioate, for use as an additive in a lubricant composition so as to impart improved coefficient of friction, wear reduction, antioxidant and extreme pressure properties, including the steps of (a) hydrogenating distilled technical cashew nut shell liquid with palladium or nickel or platinum catalyst; to fully hydrogenate the olefinic chain and aromatic ring of the precursor; (b) reacting fully hydrogenated technical cashew nut shell liquid with phosphorus pentasulfide to obtain unpolymerized hydrogenated cashew nut shell liquid phosphorodithioic acid, the reaction being carried out at a temperature ranging from 20 to 140° C. ; and (c) condensing the unpolymerized fully saturated cashew nut shell liquid phosphorodithioic acid with at least one amine to obtain the amino di(alkylcyclohexyl) phosphorodithioate.Type: GrantFiled: March 30, 2001Date of Patent: October 28, 2003Assignee: Indian Oil Corporation LimitedInventors: Krishan Kumar Swami, Shanti Parkash, Rakesh Sarin, Deepak Kumar Tuli, Akhilesh Kumar Bhatnagar
-
Publication number: 20030171227Abstract: Stabilising compositions for lubricant base stocks and lubricant formulations are composed of a mixture of (a) at least one aromatic aminic amine antioxidant optionally blended with at least one hindered phenolic antioxidant and (b) at least one neutral organo phosphate or phosphite, optionally blended with at least one acid organo phosphate or phosphite. These stabilising composition mixtures are characterised by their stabilising capacity which is considerably higher than that of either the single antioxidants or the single phosphate or phosphite additives. These stabilising compositions can be used in all fields where the single components of the mixtures are generally used and where deterioration due to oxidation processes takes place.Type: ApplicationFiled: November 5, 2002Publication date: September 11, 2003Inventors: Alan Holt, Gerard Mulqueen
-
Patent number: 6617287Abstract: A novel lubricating composition for manual transmissions with improved performance with sintered synchronized components. The lubricating oil composition contains high level of an alkaline earth sulfonate and amine phosphates.Type: GrantFiled: October 22, 2001Date of Patent: September 9, 2003Assignee: The Lubrizol CorporationInventors: Michael P. Gahagan, Brian M. O'Connor
-
Publication number: 20030166478Abstract: A refrigerating machine oil composition according to the invention comprises an alicyclic polycarboxylic acid ester compound obtained from the following compounds (a) to (c):Type: ApplicationFiled: January 23, 2003Publication date: September 4, 2003Inventors: Yuji Shimomura, Katsuya Takigawa
-
Patent number: 6613722Abstract: A lubricating composition for lubricating a continuously variable transmission, the lubricating composition comprising a mixture of a major amount of a lubricating oil and an effective amount of a performance enhancing additive combination comprising: (a) at least one organic phosphite; (b) at least one amine salt of an organic phosphate; and (c) one or more friction modifiers selected from the group consisting of selected (1) amides, (2) succinimides, and (3) ethoxylated amines.Type: GrantFiled: March 7, 1997Date of Patent: September 2, 2003Assignee: Exxon Chemical Patents Inc.Inventors: Raymond F. Watts, Philip Reeve
-
Publication number: 20030158050Abstract: Provided is a lubricant composition prepared by adding, to a base oil, (a) from 0.01 to 5% by mass, based on the composition, of a phosphate, (b) from 0.005 to 1% by mass of an amine salt of an acid phosphate and (c) from 0.01 to 1% by mass of a sulfur-containing extreme-pressure agent. The composition is favorable for non-zinc hydraulic oil, which has good oxidation resistance, sludge resistance and wear resistance and further has improved extreme pressure resistance and prolonged fatigue life.Type: ApplicationFiled: December 10, 2002Publication date: August 21, 2003Applicant: Idemitsu Kosan Co., Ltd.Inventors: Hiroshi Kawasaki, Nobuaki Watanabe
-
Patent number: 6596673Abstract: The cylinders of a two-stroke cross-head marine diesel engine characterised by a power output of 4,000 kW per cylinder or greater are lubricated by a cylinder lubricant comprising a basestock of lubricating viscosity, on overbased metal detergent and an oil-soluble sulfur-containing compound or phosphorus-containing compound, thereby to raise the onset temperature of scuffing-type mechanical wear of the cylinder walls.Type: GrantFiled: August 25, 2000Date of Patent: July 22, 2003Assignee: Infineum International Ltd.Inventors: Charles H. Bovington, Terence Garner
-
Patent number: 6586375Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity and a minor amount of a salt of at least one nitrogen containing polyacrylate and at least one phosphorus acid ester. The invention also relates to lubricating compositions and concentrates containing the same. The present phosphorus salts of the nitrogen containing copolymers provide improved dispersant, viscosity improver and antiwear properties to lubricating compositions.Type: GrantFiled: April 15, 2002Date of Patent: July 1, 2003Assignee: The Lubrizol CorporationInventors: Michael P. Gahagan, Matthew R. Sivik
-
Patent number: 6573223Abstract: The invention relates to a lubricating composition comprising: (a) at least one sulfur-free hydrocarbyl phosphoric acid ester or salt, (b) at least one sulfur-containing hydrocarbyl phosphoric acid or salt, (c) an organic polysulfide, (d) at least one dispersant, and (e) at least one triazole metal deactivator. The composition may also include a thiadiazole derivative. This additive combination provides good antiwear and thermal stability properties, even under severe thermal conditions. These compositions also have good demulsibility properties. The above combination of additives provides the antiwear and extreme-pressure protection necessary for automotive and industrial gear applications. These additives additionally provide this protection without adversely effecting demulsibility properties of the lubricant.Type: GrantFiled: March 4, 2002Date of Patent: June 3, 2003Assignee: The Lubrizol CorporationInventor: James N. Vinci
-
Patent number: 6521571Abstract: A lubricant suitable for use in a trunk piston diesel engine characterised by a power output of 200 kW or greater. The trunk piston diesel engine may be for use in marine, power generation or rail traction applications. The lubricant comprises a basestock of lubricating viscosity, an overbased metal detergent, preferably having an ash content of at least 0.85% sulfated ash, and an ashless or metal-free auxiliary additive comprising at least one of: an oil-soluble sulfurized alkylphenol, a phosphorosulfurized or sulfurized hydrocarbon, a sulfide of an oil, a fat or a polyolefin, or an amine phosphate.Type: GrantFiled: September 20, 2001Date of Patent: February 18, 2003Assignee: Infineum International Ltd.Inventors: Terence Garner, Laurent Chambard, Adrian Dunn
-
Patent number: 6511947Abstract: Heat resistant lubricatant oil compositions consisting of a synthetic lubricating oil composition mainly composed of a polyphenyl ether and so excellent in heat and oxidation resistance and wear resistance as to be suitable for use under severe conditions, particularly, under high-temperature and high-load conditions are disclosed. One embodiment is a lubricating oil composition obtained by mixing, to (a) a base oil consisting of a polyphenyl ether and/or a polyphenyl thioether, (b) an amine-type antioxidant 0.1-0.8 mass %, on the basis of the total mass of the lubricating oil composition, (c) a phosphate 2-3 mass %, and (d) an amine salt of acid phosphate 0.07-0.15 mass %. A second embodiment is a lubricating oil composition obtained by mixing, to (a) a base oil consisting of a polyphenyl ether having 5 aromatic rings and/or its hydrocarbon substituted group, (b) a polyphenyl thioether 0.05-5 mass %, on the basis of the total mass of the lubricating oil composition, (c) an amine antioxidant 0.Type: GrantFiled: June 22, 2001Date of Patent: January 28, 2003Assignee: Tonen General Sekiyu K.K.Inventors: Hiroshi Nakanishi, Noboru Umemoto
-
Publication number: 20030013619Abstract: To provide a lubricating oil composition for continuously variable transmission which ensures both a high coefficient of friction between metals required for a push belt-type CTV oil and excellent oxidation stability guaranteeing the performance over a long time.Type: ApplicationFiled: June 5, 2001Publication date: January 16, 2003Inventors: Takehisa Sato, Takanori Kugimiya
-
Patent number: 6482777Abstract: This invention relates to a lubricating composition comprising a blend of a major amount of an oil of lubricating viscosity, gear or transmission oil package and a top treatment which comprises at least one saturated fatty phosphate ester or salt, wherein the lubricating composition is free of saturated fatty phosphites. Tin another embodiment, the invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, at least one saturated fatty phosphate ester or salt, at least one polysulfide and at least one phosphorus antiwear or extreme pressure agent, wherein the lubricating composition is free of saturated fatty phosphites. The invention relates to additive combinations which when added to a lubricant can provide and improve frictional and, optionally, thermal stability properties. The additives include a phosphate ester or salt wherein the hydrocarbyl group of the phosphate is a fatty-saturated group.Type: GrantFiled: October 19, 1999Date of Patent: November 19, 2002Assignee: The Lubrizol CorporationInventor: Robert W. Cain
-
Publication number: 20020160922Abstract: Gear oils meeting GL-5 specifications are obtained by blending a base oil, a thermally stable phosphorus-containing anti-wear agent; and a metal-free sulfur-containing extreme-pressure agent; wherein the thermally stable phosphorus-containing anti-wear agent is present in an amount sufficient to provide from 100 to 350 ppm phosphorus to the formulated gear oil and wherein the metal-free sulfur-containing extreme-pressure agent is present in an amount sufficient to provide at least 10,000 ppm sulfur to the formulated gear oil and wherein the formulated gear oil contains 350 ppm of phosphorus or less.Type: ApplicationFiled: February 15, 2002Publication date: October 31, 2002Inventors: Jeffrey L. Milner, Roger M. Sheets, David R. Ellis, Rodney I. Barber
-
Patent number: 6468946Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity and (A) a di or trihydrocarbyl phosphite, (B) at least one reaction product of a di or trihydrocarbyl phosphite and sulfur or a source of sulfur; at least one di or trihydrocarbyl monothiophosphate; or salt thereof, and (C) a salt of a hydrocarbyl phosphoric acid ester. In one embodiment, the lubricant composition contains less than 0.1% phosphorus or less than about 0.75% borated dispersant. This combination of phosphorus compounds provides antiwear and thermal stability to lubricants, even at low phosphorus levels. The lubricating compositions containing the combination of the phosphorus compounds has low corrosivity to copper and low odor as well.Type: GrantFiled: July 6, 1999Date of Patent: October 22, 2002Assignee: The Lubrizol CorporationInventor: James N. Vinci
-
Publication number: 20020142922Abstract: Lubricating oil compositions comprise a lubricating base oil and (A) at least one compound selected from the group consisting of compounds represented by formula (1) below and compounds represented by formula (2) below: 1Type: ApplicationFiled: January 23, 2002Publication date: October 3, 2002Applicant: Nippon Mitsubishi Oil CorporationInventors: Kazuhiro Yagishita, Jinichi Igarashi, Takeo Koizumi
-
Publication number: 20020128159Abstract: A process for the preparation of multi-functional additive, amino di(alkylcyclohexyl0) phosphorodithioate, for use as an additive in a lubricant composition so as to impart improved coefficient of friction, wear reduction, antioxidant and extreme pressure properties, including the steps of (a) hydrogenating distilled technical cashew nut shell liquid with palladium or nickel or platinum catalyst; to fully hydrogenate the olefinic chain and aromatic ring of the precursor; (b) reacting fully hydrogenated technical cashew nut shell liquid with phosphorus pentasulfide to obtain unpolymerized hydrogenated cashew nut shell liquid phosphorodithioic acid, the reaction being carried out at a temperature ranging from 20 to 140° C. ; and (c) condensing the unpolymerized fully saturated cashew nut shell liquid phosphorodithioic acid with at least one amine to obtain the amino di(alkylcyclohexyl) phosphorodithioate.Type: ApplicationFiled: March 30, 2001Publication date: September 12, 2002Inventors: Krishan Kumar Swami, Shanti Parkash, Rakesh Sarin, Deepak Kumar Tuli, Akhilesh Kumar Bhatnagar
-
Publication number: 20020086802Abstract: This invention relates to a lubricating composition comprising a blend of a major amount of an oil of lubricating viscosity, gear or transmission oil package and a top treatment which comprises at least one saturated fatty phosphate ester or salt, wherein the lubricating composition is free of saturated fatty phosphites. Tin another embodiment, the invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity, at least one saturated fatty phosphate ester or salt, at least one polysulfide and at least one phosphorus antiwear or extreme pressure agent, wherein the lubricating composition is free of saturated fatty phosphites. The invention relates to additive combinations which when added to a lubricant can provide and improve frictional and, optionally, thermal stability properties. The additives include a phosphate ester or salt wherein the hydrocarbyl group of the phosphate is a fatty-saturated group.Type: ApplicationFiled: October 19, 1999Publication date: July 4, 2002Inventor: ROBERT W. CAIN
-
Publication number: 20020086803Abstract: A premium synthetic lubricant having antiwear properties comprises a synthetic isoparaffinic hydrocarbon base stock and an effective amount of at least one antiwear additive. The antiwear additive is preferably at least one of a metal phosphate, a metal dialkyldithiophosphate, a metal dithiophosphate a metal thiocarbamate, a metal dithiocarbamate, an ethoxylated amine dialkyldithiophosphate and an ethoxylated amine dithiobenzoate. Metal dialkyldithiophosphates are preferred, particularly zincdialkyldithiophosphate (ZDDP). The base stock is derived from a waxy, Fischer-Tropsch synthesized hydrocarbon feed fraction comprising hydrocarbons having an initial boiling point in the range of about 650-750° F., by a process which comprises hydroisomerizing the feed and dewaxing the isomerate. The lubricant may also contain hydrocarbonaceous and synthetic base stock material in admxture with the Fischer-Tropsch derived base stock.Type: ApplicationFiled: November 9, 2001Publication date: July 4, 2002Inventors: Paul J. Berlowitz, Jacob J. Habeeb, Robert J. Wittenbrink
-
Publication number: 20020032129Abstract: Transmission fluid compositions comprising a zinc detergent and at least one phosphorus-containing additive have enhanced performance capabilities. The use of the zinc detergent and the phosphorus-containing additive provide transmission fluids that exhibit high steel-on-steel coefficients of friction, particularly useful in continuously variable transmissions (CVT).Type: ApplicationFiled: August 11, 1999Publication date: March 14, 2002Inventors: SAMUEL H. TERSIGNI, SANJAY SRINIVASAN, DAVID L. STRAIT
-
Publication number: 20020010103Abstract: The present invention relates to a lubricating oil composition for use in industrial oils such as hydraulic oils, bearing oils, industrial gear oils and sliding surface lubricating oils.Type: ApplicationFiled: March 29, 2001Publication date: January 24, 2002Inventors: Himiko Takayama, Katsumi Umehara
-
Patent number: 6339052Abstract: A lubricating oil composition for gasoline and diesel internal combustion engines includes a major portion of an oil of lubricating viscosity; from 0.1 to 20.0% w/w of a component A which is a sulfurized, overbased calcium phenate detergent derived from distilled, hydrogenated cashew nut shell liquid; and from 0.1 to 10.Type: GrantFiled: June 30, 2000Date of Patent: January 15, 2002Assignee: Indian Oil Corporation LimitedInventors: Khem Chand Dohhen, Krishan Kumar Swami, Pankaj Kumar Mondal, Shanti Parkash, Rakesh Sarin, Deepak Kumar Tuli, Akhilesh Kumar Bhatnagar
-
Patent number: 6303546Abstract: There is disclosed a traction drive fluid which comprises a base oil blended with (A) an active phosphate ester base compound, (B) a boron-containing imide base dispersant (e.g. polyalkenyl succinimide treated with a boron compound) and (C) a boron-free imide base dispersant (e.g. polyalkenyl succinimide) in such blending amounts that the phosphorus content derived from the component (A) and the boron content derived from the component (B) are each 100 to 600 ppm, preferably 60 to 300 ppm by weight, and at least 60 ppm by weight, respectively based on the base oil, and the boron-free imide base dispersant (C) is blended so that the ratio by weight of the nitrogen in the component(C) to the boron in the component (B) is at least 1, preferably 1 to 6.Type: GrantFiled: June 2, 2000Date of Patent: October 16, 2001Assignees: Idemitsu Kosan Co., Ltd., NSK Co., Ltd., Nissan Motor Co., Ltd.Inventors: Hitoshi Hata, Tomomi Miyaji, Nobuo Goto, Yoshie Arakawa, Yasuhiro Murakami
-
Patent number: 6300293Abstract: The lubricant composition comprises (a) a paraffinic base oil of defined viscosity and evaporation rate characteristics, (b) a polyhydric alcohol/aliphatic acid ester, and (c) an antiwear agent. The lubricant composition is especially suitable for use in punching and staged-drawing operations on a metal/alloy, e.g. steel.Type: GrantFiled: April 3, 2000Date of Patent: October 9, 2001Assignee: ExxonMobil Research and Engineering CompanyInventor: Curt Lamberth
-
Patent number: 6262000Abstract: The antiwear performance of power transmitting fluids, particularly continuously variable transmission fluids, is improved by incorporating an additive combination of amine phosphates, organic polysulfides, zinc salts of phosphorothioic acid esters and optionally a friction modifier.Type: GrantFiled: March 9, 1998Date of Patent: July 17, 2001Assignee: Exxon Chemical Patents IncInventors: Philip Reeve, Neville J Carter, Robert Walter Humphrey, Donald Glenn Young
-
Patent number: 6165950Abstract: Concentrated lubricant compositions, dilutable for use in high temperature metal forming processes and containing a triaryl phosphate ester; a non-ionic and/or amphoteric surfactant, an organic sulfur-containing extreme pressure additive, an amine salt of an organic acid, and, optionally, sodium thiosulfate, exhibit improved performance in forming operations and produce parts with less part to part variation.Type: GrantFiled: November 20, 1998Date of Patent: December 26, 2000Assignee: PABU Services, Inc.Inventors: Arvind M. Rao, Douglas G. Placek
-
Patent number: 6136759Abstract: Provided is a novel additive composition containing (a) a compound having, in the molecule, a group of a general formula (I): ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 each represent a hydrogen atom or a methyl group, but at least one of R.sup.2 and R.sup.3 is a hydrogen atom,and (b) an extreme-pressure improver containing sulfur and/or phosphorus, and optionally, as an additional component (c), an extreme-pressure improver containing neither sulfur nor phosphorus. Lubricating oil compositions comprising the additive composition have high load carrying capacity, and are effectively used as metal working oils and hydraulic oils, such as forging oil, pressing oil, drawing oil, rolling oil, cutting oil, grinding oil, etc.Type: GrantFiled: March 29, 1999Date of Patent: October 24, 2000Assignee: Idemitsu Kosan Co., Ltd.Inventors: Fumiaki Takagi, Kazuaki Abe, Masami Yamanaka, Norihito Kanno, Katsumi Ichitani
-
Patent number: 6133207Abstract: Sulfurized phosphorous compounds, which are effective anti-wear, extreme pressure agents, may be formed without odor by reacting phosphorous compounds with other reactive sulfur sources, including elemental sulfur, before addition of polysulfides. The process of the present invention yields a lubricant additive package which is odor free or very low odor, thermally stable, and which contains polysulfides. Particularly useful embodiments of this invention include low odor gear lubricant additive packages.Type: GrantFiled: December 22, 1999Date of Patent: October 17, 2000Assignee: Ethyl CorporationInventors: Jeffrey Lynn Milner, Ronald Lee Phillips, Nubar Ozbalik, Anthony J. Rollin
-
Patent number: 6103675Abstract: The invention relates to the use of mixtures of one or more phosphoric esters of the formula (I) with one or more amines of the formula (II) as extreme pressure additives in water-immiscible cooling lubricants ##STR1## in which the substituents have the meaning defined in the description.Type: GrantFiled: March 11, 1998Date of Patent: August 15, 2000Assignee: Clariant GmbHInventors: Peter Pyka, Barbara Vollnhals, Bernd Pomrehn
-
Patent number: 6074994Abstract: Non-aqueous solvent-free lamellar liquid crystalline lubricant compositions containing an organic acid component or a salt thereof and an organic acid component are disclosed.Type: GrantFiled: February 4, 1997Date of Patent: June 13, 2000Assignee: Pennzoil Products CompanyInventors: Selda Gunsel, Fran Lockwood
-
Patent number: 6066602Abstract: The lubricant of this invention is a combination of a PLURONIC.RTM. polyol and a phospholipid. The lubricant is applied to the surface to be lubricated by forming a solution of water and the lubricant. This solution may also include Vitamin E or its derivative. In addition, a solution stabilizer and an antimicrobial agent may be used to clarify the solution and to inhibit microbial growth in the solution.Type: GrantFiled: August 7, 1997Date of Patent: May 23, 2000Assignee: Becton Dickinson and CompanyInventors: Mohammad A. Khan, Azhar J. Khan
-
Patent number: 5997761Abstract: A refrigerating machine oil composition which comprises, in the form of a blend, a base oil comprising a mineral oil or a synthetic oil and at least one species of an amine salt of an organic phosphoric acid, e.g. monooctylamine dioleyl phosphate.Type: GrantFiled: October 28, 1998Date of Patent: December 7, 1999Assignee: Idemitsu Kosan Co., Ltd.Inventor: Masato Kaneko
-
Patent number: 5972854Abstract: Disclosed is a lubricating oil composition for automatic transmissions, which comprises a base oil and additives of (A) a sulfur-containing antioxidant or an amine-type antioxidant, (B) a phosphate or its amine salt, and (C) a reaction product of a carboxylic acid and an amine. The composition has an excellent ability to prevent the brake lining of the clutch of automatic transmissions from shuddering, and can maintain the shudder-preventing ability for a long period of time.Type: GrantFiled: June 6, 1997Date of Patent: October 26, 1999Assignee: Idemitsu Kosan Co., Ltd.Inventors: Toshihiko Ichihashi, Hideo Igarashi, Junichi Deshimaru, Toshiki Ikeda
-
Patent number: 5968880Abstract: This invention relates to a lubricating composition comprising a major amount of an oil of lubricating viscosity and at least one metal-free thiophosphorus acid ester, at least one amine salt of the thiophosphorus acid ester, or a mixture thereof, wherein the thiophosphorus acid ester contains at least one hydrocarbyl terminated oxyalkylene group, at least one hydrocarbyl terminated polyoxyalkylene group, or a mixture thereof. In one embodiment, the thiophosphorus acid ester is a thiophosphorus acid ester represented by the following formula ##STR1## wherein X.sub.1, X.sub.2, and X.sub.3 are oxygen or sulfur, provided that at least one of X.sub.1, X.sub.2, and X.sub.3 is sulfur; R.sub.1 is a hydrocarbyl group; R.sub.2 is an alkylene group; R.sub.3 is hydrogen or a hydrocarbyl group; x is a number from 1 to about 40; and a is 0, 1, or 2, or at least one salt of the thiophosphorus acid ester.Type: GrantFiled: October 23, 1997Date of Patent: October 19, 1999Assignee: The Lubrizol CorporationInventors: Naresh Chand Mathur, Mary Galic Raguz
-
Patent number: 5942470Abstract: Gear oils and gear oil additive concentrates of enhanced positraction performance are described. They comprise: (i) at least one oil-soluble sulfur-containing extreme pressure or antiwear agent; (ii) at least one oil-soluble amine salt of a partial ester of an acid of phosphorus; and (iii) at least one oil-soluble succinimide of the formula ##STR1## where R.sub.1 is an alkyl or alkenyl group having an average of 8 to 50 carbon atoms, and each of R.sub.2, R.sub.3 and R.sub.4 is a hydrogen atom or an alkyl or alkenyl group having an average of up to about 4 carbon atoms. These compositions preferably contain one, more preferably two, and most preferably all three of the following additional components: (iv) at least one amine salt of a carboxylic acid; (v) at least one nitrogen-containing ashless dispersant; and (vi) at least one trihydrocarbyl ester of a pentavalent acid of phosphorus.Type: GrantFiled: May 19, 1998Date of Patent: August 24, 1999Assignee: Ethyl Petroleum Additives, Inc.Inventors: Stephen Norman, Donald G. Campbell, Gregory S. Conary
-
Patent number: 5919740Abstract: There are disclosed antioxidant additives for lubricating oils which exhibit reduced phosphorus volatility, the additives being sodium, potassium, lithium or oil soluble amine salts of a dialkyldithiophosphoric acid prepared by reacting P.sub.2 S.sub.5 with a mixture of alcohols consisting of (a) a polyol of the formula R(OH).sub.n where R is a C.sub.2 -C.sub.20 hydrocarbyl group and n is 2-10 and (b) an aliphatic monohydric alcohol having 3-18 carbon atoms, the mixture containing relative amounts of polyol and monohydric alcohol such that 50 mole % of the total OH groups are OH groups of the polyol.Type: GrantFiled: May 29, 1998Date of Patent: July 6, 1999Assignee: Exxon Chemical Patents IncInventors: Ricardo A. Bloch, Alexander B. Boffa
-
Patent number: 5916850Abstract: A process for the preparation of amino di(alkylaryl) phosphorodithioate for use as an additive in a lubricant composition so as to impart improved coefficient of friction, wear reduction, antioxidant and extreme pressure properties, including the steps of(a) reacting a starting material selected from the group consisting of distilled cashew nut shell liquid and distilled hydrogenated cashew nut shell liquid with phosphorus pentasulfide to obtain unpolymerized cashew nut shell liquid phosphorodithioic acid, the reacting being carried out at a temperature ranging from 40 to 80.degree. C. when the starting material is distilled cashew nut shell liquid and at a temperature ranging up to 140.degree. C. and above when the starting material is distilled hydrogenated cashew nut shell liquid; and(b) condensing the unpolymerized cashew nut shell liquid phosphorodithioic acid with at least one amine to obtain the amino di(alkylaryl) phosphorodithioate.Type: GrantFiled: November 6, 1997Date of Patent: June 29, 1999Assignee: Indian Oil Corporaton LimitedInventors: Deepak Kumar Tuli, Rakesh Sarin, Madan Mohan Rai, Akhilesh Kumar Bhatnagar
-
Patent number: 5866520Abstract: A lubricant composition is disclosed that is suitable for direct fuel injected, crankcase-scavenged two-stroke cycle engines. That lubricant composition has a major amount of at least one oil of lubricating viscosity, a minor amount of a lubricity additive, a polyalkyl amide, an imidazoline, a polyisobutylene, and a functionalized polyisobutylene. The lubricity additive contains glycerol monooleate, an acid aliphatic aromatic amine-phosphate, and sodium sulfonate. The acid aliphatic aromatic amine-phosphate has a phosphorus/oxygen atom ratio of from 4.0:1 to 4.5:1, and at least 1.2 equivalents of acid to 1.0 equivalents of base.Type: GrantFiled: January 29, 1997Date of Patent: February 2, 1999Assignee: Chevron Chemical CompanyInventors: Sumanth Addagarla, Glenn E. Callis
-
Patent number: 5858266Abstract: A refrigerating machine oil composition which comprises, in the form of a blend, a base oil comprising a mineral oil or a synthetic oil and at least one species selected from the group consisting of a metallic salt of an inorganic phosphoric acid, e.g. potassium phosphate, an amine salt of an inorganic phosphoric acid, e.g. octylamine phosphate, a metallic salt of an organic phosphoric acid, e.g. dipotassium lauryl phosphate, an amine salt of an organic phosphoric acid, e.g. monooctylamine dioleyl phosphate, a metallic salt of an organic phosphonic acid, e.g. dipotassium oleyl phosphonate, an amine salt of an organic phosphonic acid, e.g. octylamine dilauryl phosphonate, a metallic salt of an organic phosphorous acid, e.g. sodium dioleyl phoshite, and an amine salt of an organic phosphorous acid, e.g. octylamene dioleyl phosphate.Type: GrantFiled: April 7, 1997Date of Patent: January 12, 1999Assignee: Idemitsu Kosan Co., Ltd.Inventor: Masato Kaneko
-
Patent number: 5801130Abstract: This invention relates to synthetic based turbo oils, preferably polyol ester-based turbo oils which exhibit exceptional load-carrying capacity by use of a synergistic combination of sulfur (S)-based and phosphorous (P)-based load additives. The S-containing additives of the present invention are DMTD and its derivative including the capped DMTD and the DMTD dimer, and the P-containing component is one or more amine phosphates. The turbo oil composition consisting of the dual P/S additives of the present invention achieves an excellent load-carrying capacity, which is better than that obtained when each additive was used alone at a treat rate higher than or comparable to the total combination additive treat rate, and the lower concentration requirement of the P-based additive allows the turbo oil composition to meet US Navy MIL-L-23699 requirement on the Si seal compatibility.Type: GrantFiled: March 7, 1997Date of Patent: September 1, 1998Assignee: Exxon Research and Engineering CompanyInventors: Manual A. Francisco, Paul Joseph Berlowitz, Jeenok T. Kim
-
Patent number: 5789358Abstract: This invention relates to synthetic based turbo oils, preferably polyol ester-based turbo oils which exhibit exceptional load-carrying capacity by use of a synergistic combination of sulfur (S)-based and phosphorous (P)-based load additives. The S-containing additives of the present invention are thiosemicarbazide and its derivative, and the P-containing component is one or more amine phosphates. The turbo oil composition consisting of the dual P/S additives of the present invention achieves an excellent load-carrying capacity, which is better than that obtained when each additive was used alone at a treat rate higher than or comparable to the total combination additive treat rate, and the lower concentration requirement of the P-based additive allows the turbo oil composition to meet U.S. Navy MIL-L-23699 requirement on the Si seal compatibility.Type: GrantFiled: February 7, 1997Date of Patent: August 4, 1998Assignee: Exxon Research and Engineering CompanyInventors: Paul Joseph Berlowitz, Morton Beltzer
-
Patent number: 5763372Abstract: The present invention relates to a clean gear boron-free gear additive employing a boron-free ashless dispersant, a sulfur source and a phosphorus source. More particularly, the preferred boron-free ashless dispersant is a hydrocarbyl succinimide. This additive composition when blended with a suitable base oil meets MT-1 and MIL-PRF-2105E requirements without the need for boron. MT-1 is a requirement for a clean gear manual transmission oil. MIL-PRF-2105E is a requirement for a rear axle oil.Type: GrantFiled: December 13, 1996Date of Patent: June 9, 1998Assignee: Ethyl CorporationInventors: Samuel H. Tersigni, Marsha J. Lester, Lee D. Saathoff
-
Patent number: 5700764Abstract: Lubricants and additive packages that give exceptional performance as heavy duty gear lubricants are described. Four essential oil-soluble additive components are used in combination, viz., a metal-free sulfur-containing antiwear and/or extreme pressure agent having a copper corrosion test activity of not more than 65; a metal-free phosphorus- and nitrogen-containing antiwear and/or extreme pressure agent; an organic carboxylic acid; and an organic amine. Tests comparing the performance of the invention against a commercial premium API GL-5 gear oil additive package selected as the best available package by a well-known OEM have shown the superiority of the present compositions under a number of test conditions.Type: GrantFiled: May 8, 1996Date of Patent: December 23, 1997Assignee: Ethyl Petroleum Additives LimitedInventors: David Kenvyn Walters, Ian Macpherson
-
Patent number: 5681797Abstract: An oxidatively stable, biodegradable lubricant composition is disclosed which comprises(A) a hydrogenated polyisoprene prepared by polymerizing isoprene such that polyisoprene is obtained wherein there are from 4 to 1000 isoprene units and hydrogenating the polyisoprene to obtain a hydrogenated polysoprene containing a residual olefinic unsaturation of not more than 10 percent based upon the unsaturation content prior to hydrogenation; and(B) at least one performance additive selected from the group consisting of(1) an alkyl phenol;(2) an ether;(3) a mono- or di-substituted glyceride;(4) a phosphorus derivative;(5) a benzotriazole;(6) a phosphorus amine salt;(7) a trihydrocarbyl phosphorothionate;(8) an aromatic amine;(9) a zinc salt;(10) a pour point depressant ester;(11) a hydrogenated block copolymer; and(12) an acrylate polymer.Type: GrantFiled: February 29, 1996Date of Patent: October 28, 1997Assignee: The Lubrizol CorporationInventor: Saurabh S. Lawate
-
Patent number: 5665685Abstract: A gear or transmission lubricant composition, comprising a major portion of mineral base oil, containing added thereto (A) a phosphorus-containing metal-free organic compound, such as a phosphate ester or amine salt thereof, and (B) an oil-soluble copolymer of (a) an alkyl (meth)acrylate and (b) a N,N-dialkylaminoalkyl (meth)acrylate, shows improved sludge dispersibility, and is useful as automatic transmission fluid.Type: GrantFiled: November 30, 1995Date of Patent: September 9, 1997Assignee: Sanyo Chemical Industries, Ltd.Inventor: Shoji Takigawa