Overbased Or Carbonated Sulfonates Patents (Class 508/391)
  • Publication number: 20020107152
    Abstract: A low-phosphorus lubricant comprises:
    Type: Application
    Filed: December 5, 2001
    Publication date: August 8, 2002
    Inventor: Robert Robson
  • Patent number: 6410491
    Abstract: Provided is a polyalkenyl sulfonic acid composition comprising a mixture of polyalkenyl sulfonic acids derived from a mixture of polyalkenes comprising greater than 20 mole percent alkyl vinylidene and 1,1-dialkyl isomers, and a method for making the composition. Also provided are low and high overbased sulfonates made from the mixture of polyalkenyl sulfonic acids, and lubricating oils containing the sulfonates.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: June 25, 2002
    Assignee: Chevron Chemical Company LLC
    Inventors: James J. Harrison, Curtis B. Campbell
  • Patent number: 6376434
    Abstract: A lube oil composition which is suitably used for diesel engines which exhaust large amounts of sulfur dioxides (Sox). The composition exhibit excellent corrosion/wear preventive properties against SOx. The lube oil composition of the invention for diesel engines includes a lube oil base having a kinematic viscosity of 8-35 mm2/s at 100° C.; a component (A) which is a compound selected from the group consisting of over based sulfonates of alkaline earth metals, over based phenates of alkaline earth metals, and over based salicylates of alkaline earth metals; and a component (B) which is a bis-type succinic imide compound having an absorption ratio, &agr;/&bgr; (wherein &agr; is the intensity of an absorption peak at 1550±10 cm−1 and &bgr; is the intensity of an absorption peak at 1700±10 cm−1), of absorption peaks in an IR spectrum of not more than 0.005.
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: April 23, 2002
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Tadashi Katafuchi
  • Patent number: 6372696
    Abstract: A traction fluid useful in automotive power transmitting equipment includes a base fluid of polymers of at least one olefin which contains 3 to 5 carbon atoms, hydrocarbon molecules containing non-aromatic cyclic moieties, or mixtures thereof; a low-temperature viscosity control agent selected from the group consisting of oligomers or polymers of linear alpha olefins of at least 8 carbon atoms, naphthenic oils, synthetic ester oils, polyether oils, and mixtures thereof, in an amount sufficient to reduce the low temperature viscosity of the traction fluid; and an additive package including dispersants, detergents, or mixtures thereof, along with other optional additive components.
    Type: Grant
    Filed: November 9, 1999
    Date of Patent: April 16, 2002
    Assignee: The Lubrizol Corporation
    Inventor: Craig D. Tipton
  • Publication number: 20020006878
    Abstract: A composition of an antioxidant of the formula 1
    Type: Application
    Filed: January 16, 2001
    Publication date: January 17, 2002
    Applicant: Lubrizol Corporation
    Inventors: William D. Abraham, Paul E. Adams, Gordon D. Lamb, Thomas J. Wolak, Richard A. Denis, Jody A. Kocsis, James P. Roski, Virginia A. Carrick, Susan V. Cowling
  • Patent number: 6339051
    Abstract: Diesel engine cylinder oils of improved cleanliness and load carrying ability and reduced port deposit characteristics for use in marine and stationary slow speed diesel engines are based on medium heavy Group I or Group II neutral base oils, typically from 300 to 500 SUS using a liquid, oil-miscible polyisobutylene (PIB) in combination with the neutral base stock and an additive package comprising a detergent component or components, an antioxidant, an antiwear agent, and a dispersant. The detergent component preferably comprises one or more overbased phenates, phenylates, salicylates or sulfonates in order to confer the desired alkalinity characteristics on the finished oil. The oils are produced in the viscosity range of 15 to 25 cS (100° C.), usually with a nominal viscosity of 20 or 24 cS, i.e., from 18.5 to 21.9 cS or 21.9 to 26.1 cS (100° C.). The viscosity index of the improved oils is at least 95, typically from 105 to 120. Total Base Number of the oils is in the range 40 to 100.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: January 15, 2002
    Assignee: Mobil Oil Corporation
    Inventors: Vincent M. Carey, John T. Fogarty
  • Patent number: 6337310
    Abstract: An alkylaryl composition wherein the aryl radical is other than phenol and wherein the alkyl radical is derived from an isomerized C14 to C40 normal alpha olefin and wherein either (1) the weight percent of the aryl radical fixed at position 1 or 2 of a linear alkyl chain is less than about 23, or (2) at least 28 weight percent of the alkyl radicals are branched chain alkyl radicals, or (3) both is useful for making alkaline earth alkylaryl sulfonates that can be used as lubricating oil additives.
    Type: Grant
    Filed: June 2, 2000
    Date of Patent: January 8, 2002
    Assignees: Chevron Oronite Company LLC, Chevron Oronite S.A.
    Inventors: Curtis B. Campbell, Jean-Louis Marie Le Coent
  • Patent number: 6337309
    Abstract: A zinc-free lubricating composition for lubricating a continuously variable transmission is disclosed, 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) an ashless polyisobutenyl succinimide dispersant; (b) at least one organic thioether phosphite; (c) a calcium phenate overbased detergent at a concentration such that the total amount of calcium in the fluid is less than about 500 ppm; (d) friction modifiers comprising one or more succinimides and one or more ethoxylated amines; and (e) a primary amide of a long chain carboxylic acid.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: January 8, 2002
    Assignee: Infineum International LTD
    Inventors: Raymond F. Watts, Yasuhiro Murakami, Katherine M. Richard, Makoto Maeda, Yukio Ueda, Yoshi Arakawa, Takao Ishikawa
  • Patent number: 6310010
    Abstract: Concentrates for lubricating oil compositions are prepared by mixing at elevated temperature: (i) at least one high molecular weight ashless dispersant; (ii) at least one oil-soluble overbased metal detergent; and (iii) at least one surface-active agent comprising a low molecular weight hydroxyl or amine group.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: October 30, 2001
    Assignee: Exxon Chemicals Patents INC
    Inventors: Gary Higton, Jacob Emert, Robert A. Wilkinson, Isabel P. MacDonald, Karl J. Van Driesen, Salvatore Rea, James P. Stokes, Andrew J. D. Ritchie
  • Publication number: 20010034307
    Abstract: Low overbased alkaline earth metal alkylaryl sulfonate having a Total Base Number of from about 2 to about 30, a dialkylate content of 0% to about 25% and a monoalkylate content of about 75% to about 90% or more, wherein the alkylaryl moiety is alkyltoluene or alkylbenzene in which the alkyl group is a C15-C21 branched chain alkyl group derived from a propylene oligomer are useful as lubricating oil additives.
    Type: Application
    Filed: November 20, 1998
    Publication date: October 25, 2001
    Inventors: WILLIAM FRANK KING, CURTIS BAY CAMPBELL, OLIVIER CLEMENT, JEAN-LOUIS LECOENT, STEVEN GALE LOCKETT, RICHARD JAMES NELSON, PIERRE TEQUI
  • Publication number: 20010034305
    Abstract: Lubricant compositions comprises a lubricant base oil blended with a boron-containing ashless dispersant (A) in an amount of 0.035 or more percent of boron by mass, and an alkaline earth metal sulfonate having a total base number of 50 to 500 mgKOH/g (B) in an amount of 0.01 or more percent of alkaline earth metal by mass, all the percentages being based on the total mass of the composition and if necessary a phosphorus additive. The lubricant compositions are superior in effect to enhance the dynamic- and static-friction coefficients in a wet clutch.
    Type: Application
    Filed: March 27, 2001
    Publication date: October 25, 2001
    Applicant: Nippon Mitsubishi Oil Corporation
    Inventor: Hitoshi Komatsubara
  • Patent number: 6306801
    Abstract: A lubricating oil composition having an excellent sludge formation inhibiting effect and being suitable for use as an engine oil is provided. The lubricating oil composition includes: a lubricating base oil, (A) 0.5 to 20% by mass of acylated bissuccinimide, (B) 0.05 to 0.3% by mass of zinc dithiophosphate in terms of the phosphorus content, and (C) 0.5 to 4.0% by mass of metallic detergent in terms of the sulfated ash content, based on the total mass of the composition.
    Type: Grant
    Filed: October 21, 1999
    Date of Patent: October 23, 2001
    Assignee: Nippon Mitsubishi Oil Corporation
    Inventors: Kazuhiro Yagishita, Yoko Matsuyama, Osamu Kurosawa
  • Patent number: 6300291
    Abstract: A lubricating oil composition exhibiting improved low temperature anti-wear performance and improved fuel economy and fuel economy retention properties, which comprises: (a) an oil of lubricating viscosity; (b) at least one calcium detergent; (c) at least one oil soluble molybdenum compound; (d) at least one nitrogen containing friction modifier; and (e) at least one zinc dihydrocarbyldithiophosphate compound, wherein the composition has a NOACK volatility of about 15.5 wt. % or less and contains from about 0.058 to 0.58 wt. % calcium from the calcium detergent, molybdenum in an amount up to about 350 ppm from a molybdenum compound, and phosphorus in an amount up to about 0.1 wt. % from a zinc dihydrocarbyldithiophosphate compound.
    Type: Grant
    Filed: May 19, 1999
    Date of Patent: October 9, 2001
    Assignee: Infineum USA L.P.
    Inventors: Rolfe J. Hartley, Malcolm Waddoups, Ian A. W. Bell, Thomas R. Bidwell, Gordon R. Farnsworth, Taisuke Miyoshi
  • Patent number: 6294506
    Abstract: A lubricating oil composition has a major amount of an oil of lubricating viscosity, a minor amount of a carbonated sulfurized metal alkyl phenate and, a minor amount of a carbonated metal alkyl aryl sulfonate. The total base equivalents donated by the phenate is more than 85% of the total base equivalents donated by the phenate and sulfonate. The composition also has alkenyl or alkyl succinimide additives that are the reaction product of a high molecular weight alkenyl- or alkyl-substituted succinic anhydride and a polyalkylene polyamine having an average of greater than four nitrogen atoms per mole, wherein the reaction product is post-treated with a cyclic carbonate.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: September 25, 2001
    Assignee: Chevron Chemical Company
    Inventors: Terry V. Friesen, James J. Harrison, William R. Ruhe, Jr.
  • Patent number: 6277794
    Abstract: A marine diesel engine lubricant composition having a TBN of at least 10 and preferably a VI of at least 90, comprises a major amount of oil of lubricating viscosity, and admixed therewith, minor amounts of an ashless antiwear additive and a metal detergent in the form of (i) an overbased metal detergent having a TBN at least 300, preferably at least 330, more preferably at least 400, and comprising a surfactant system derived from at least two surfactants, and/or (ii) a metal detergent other than (i); provided that, if detergent (ii) is present, the composition does not contain a minor amount of an extreme pressure additive, being up to 5.0 mass % based on the total mass of the composition.
    Type: Grant
    Filed: December 28, 1998
    Date of Patent: August 21, 2001
    Assignee: Infineum USA L.P.
    Inventor: Adrian Dunn
  • Publication number: 20010003734
    Abstract: A marine diesel engine lubricant composition having a TBN of at least 10 and preferably a VI of at least 90, comprises a major amount of oil of lubricating viscosity, and admixed therewith, minor amounts of an ashless antiwear additive and a metal detergent in the form of
    Type: Application
    Filed: December 15, 2000
    Publication date: June 14, 2001
    Applicant: Infineum USA L.P.
    Inventor: Adrian Dunn
  • Patent number: 6235688
    Abstract: Non-thixotropic, sodium-free lubricant additive having from 10% to 50% of a liquid organic diluent and from 30% to 90% of a substituted hydrocarbaryl metal salt. At least 30 mole percent of the metal in the metal salt is lithium, and the salt is essentially free of sodium. The BN of the non-thixotropic lubricant additive attributable to the lithium is less than 150. This additive is useful for decreasing black sludge deposits and piston deposits.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: May 22, 2001
    Assignee: Chevron Chemical Company LLC
    Inventors: Vernon R. Small, Jean-Louis Le Coent, Gerrit J. Polhaar, Ita Suharti Suwandi, William Woodford Willis, Jr.
  • Patent number: 6204226
    Abstract: Mixture of alkyl phenyl sulfonates of alkaline earth metals having: (a) from 20% to 70% by weight of a linear mono alkyl phenyl sulfonate in which the linear mono alkyl substituent contains from 14 to 40 carbon atoms, preferably from 20 to 24 carbon atoms, and the mole % of the phenyl sulfonate radical fixed on position 1 or 2 of the linear alkyl chain is between 10% and 25%, preferably between 13% and 20%, and (b) from 30% to 80% by weight of a branched mono alkyl phenyl sulfonate in which the branched mono alkyl substituent contains from 14 to 18 carbon atoms.
    Type: Grant
    Filed: June 3, 1999
    Date of Patent: March 20, 2001
    Assignees: Chevron Oronite S.A., Chevron Oronite Co. LLC
    Inventors: Jean-Louis Le Coent, Olivier Pascal Marie Clement, Amedee Guellec, William Frank King, Richard J. Nelson, Steven G. Lockett
  • Patent number: 6197075
    Abstract: An overbased magnesium composition deposit control additive for residual fuel oils and turbine fuels is an overbased magnesium sulfonate, carboxylate or phenate or mixtures thereof containing at least 14% and upwards to about 18% by weight of magnesium and containing a succinic anhydride and lower carboxylic acid co-promoter reaction product. The additive when added to fuel oils, such as residual fuel oils containing high asphaltenes, reduces, if not eliminates, magnesium/asphaltene deposits or sediment and the consequential plugging of filters. The additive also reduces, if not eliminates, vanadium caused corrosion in the turbine. The invention is also the process for preparing the overbased composition or deposit control additive, wherein the overbasing reaction incorporates the combination of a lower carboxylic acid, preferably acetic acid and a succinic anhydride, preferably dodecenyl succinic anhydride (DDSA), as the co-promoter.
    Type: Grant
    Filed: April 2, 1998
    Date of Patent: March 6, 2001
    Assignee: Crompton Corporation
    Inventors: Ronald J. Muir, Theo I. Eliades
  • Patent number: 6191081
    Abstract: A long life lubricating oil as evidenced by a reduction in viscosity increase, oxidation and nitration, comprises a major amount of a base oil of lubricating viscosity and a minor amount of a mixture of high TBN, medium TBN and low/neutral TBN detergents wherein metal salicylate detergent is at least one of the medium or low/neutral TBN detergents.
    Type: Grant
    Filed: December 15, 1999
    Date of Patent: February 20, 2001
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Stanley James Cartwright, James Walter Finch
  • Patent number: 6159911
    Abstract: Disclosed is a diesel engine oil composition containing a lube oil base and one or more metallic detergent-dispersants selected from among a perbasic alkaline earth metal sulfonate, phenolate, and salicylate. The total phosphorus content of the composition is suppressed to 100 ppm by weight or less, to thereby provide diesel engine oil compositions having excellent oxidation stability and wear resistance.
    Type: Grant
    Filed: April 15, 1998
    Date of Patent: December 12, 2000
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Tadashi Katafuchi
  • Patent number: 6159912
    Abstract: A low overbased alkyl phenyl sulfonate prepared by the neutralization of sulfonic acid with a sulfurized high TBN calcium alkylphenate in the absence of chloride and in the absence of additional carboxylic acid.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: December 12, 2000
    Assignee: Chevron Chemical Company LLC
    Inventor: John McDonald
  • Patent number: 6153565
    Abstract: Phenate overbased detergents and salicylate overbased detergents with TBN: % surfactant ratios of 11 or more are useful marine diesel lubricant additives.
    Type: Grant
    Filed: November 9, 1998
    Date of Patent: November 28, 2000
    Assignee: Exxon Chemical Patents INC
    Inventors: Philip Skinner, Alain Louis Pierre Lenack
  • Patent number: 6143701
    Abstract: A lubricating oil composition which exhibits improved fuel economy and fuel economy retention which contains the combination of an overbased oil soluble calcium detergent additive and an oil soluble trinuclear friction modifying molybdenum compound, the two components functioning to provide an improvement in the friction reducing properties of the composition.
    Type: Grant
    Filed: March 13, 1998
    Date of Patent: November 7, 2000
    Assignee: Exxon Chemical Patents Inc.
    Inventor: Alexander B. Boffa
  • Patent number: 6140279
    Abstract: Concentrates for lubricating oil compositions are prepared by mixing at elevated temperature:(i) at least one high molecular weight ashless dispersant;(ii) at least one oil-soluble overbased metal detergent; and (iii) at least one other concentrate additive provided that the additive is first mixed with the detergent or the dispersant.
    Type: Grant
    Filed: April 9, 1999
    Date of Patent: October 31, 2000
    Assignee: Exxon Chemical Patents Inc
    Inventors: Jacob Emert, Isabel P. MacDonald
  • Patent number: 6140280
    Abstract: Disclosed are novel succinimide compounds effective in diesel engine lubricating oil for protecting engine parts from being corroded or worn by SOx. An acid compound of formula (I) or (II) is reacted with a polyamine to produce the succinimide compounds, which give an absorption peak (.alpha.-peak) at 1640.+-.cm.sup.-1 and an absorption peak (.beta.-peak) at 1700.+-.10 cm.sup.-1 in the IR spectral pattern with the ratio, .alpha.-peak intensity/.beta.-peak intensity, of being 0.12 or more.[1] ##STR1## R is an alkenyl or alkyl group derived from a C2 to C15 olefinic polymer and having a number-average molecular weight of from 200 to 4000. The succinimide compound is added to base oil along with a metallic detergent-dispersant additives selected from over-based sulfonates, phenates and salicylates of alkaline earth metals to give a lubricating oil composition for diesel engines.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: October 31, 2000
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Takeshige Nakano, Tadashi Katafuchi
  • Patent number: 6103672
    Abstract: An improved polybutene-free lubricant composition for marine diesel engines, comprising a major amount of oil of lubricating viscosity and, provided by admixing therewith, minor amounts of a) at least one of a borated dispersant or oil-soluble or oil-dispersible boron compound; and b) one or more overbased metal compounds the or each compound having a TBN of at least 300, with the proviso that if an overbased metal salicylate is present then the TBN of said salicylate is at least 200; wherein the TBN of the composition is at least 10 and the viscosity index of the composition is at least 90.
    Type: Grant
    Filed: May 1, 1998
    Date of Patent: August 15, 2000
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Adrian Dunn, Alain Louis Pierre Lenack, Philip Skinner
  • Patent number: 6054419
    Abstract: Mixture of alkyl aryl sulfonates of superalkalinized alkaline earth metals comprising:(a) 50 to 85% by weight of a mono alkyl phenyl sulfonate with a C.sub.14 to C.sub.40 linear chain wherein the molar proportion of phenyl sulfonate substituent in position 1 or 2 is between 0 and 13%, and(b) 15 to 50% by weight of a heavy alkyl aryl sulfonate, wherein the aryl radical is phenyl or not, and the alkyl chains are either two linear alkyl chains with a total number of carbon atoms of 16 to 40, or one or a plurality of branched alkyl chains with on average a total number of carbon atoms of 15 to 48.Inasmuch as these mixtures contain less than 10% of linear mono alkyl phenyl sulfonate substituted in position 1 or 2 of the linear alkyl chain, they exhibit properties making them fit for use as detergent/dispersant additives for lubricating oils.
    Type: Grant
    Filed: May 29, 1998
    Date of Patent: April 25, 2000
    Assignee: Chevron Chemical Company LLC
    Inventor: Jean-Louis Le Coent
  • Patent number: 6037314
    Abstract: A grease composition for constant velocity joints comprises (a) a base oil; (b) a urea thickener; (c) at least one organic molybdenum compound selected from the group consisting of molybdenum dithiocarbamate and molybdenum dithiophosphate; and (d) at least one calcium salt selected from the group consisting of calcium salts of petroleum sulfonates, calcium salts of alkyl aryl sulfonates, calcium salts of salicylate, calcium salts of phenates, calcium salts of oxidized waxes, overbasic calcium salts of petroleum sulfonates, overbasic calcium salts of alkyl aryl sulfonates, overbasic calcium salts of salicylate, overbasic calcium salts of phenates, and overbasic calcium salts of oxidized waxes. The grease composition exhibits good performance for reducing vibration and effectively lubricates the constant velocity joints to effectively reduce frictional wear and to eliminate vibration.
    Type: Grant
    Filed: June 5, 1997
    Date of Patent: March 14, 2000
    Assignees: Kyodo Yushi Co., Ltd., Toyota Jidosha Kabushiki Kaisha
    Inventors: Shinya Kondo, Junichi Imai, Takashi Okaniwa, Kenji Ueno, Hitoshi Ishii, Fumio Ueda
  • Patent number: 6010986
    Abstract: Disclosed is a composition for reducing the copper-lead bearing corrosion of a formulation that includes a major amount of an oil of lubrication viscosity and a minor amount of a corrosion-reducing additive comprising:(A) a dispersant with a total base number of from 20 to 160 on an oil-free basis, with the proviso that the dispersant is substantially boron-free;(B) a metal salt of a phosphorus acid; and(C) a metal overbased composition comprising at least one carboxylate, phenate, or sulfonate wherein the metal is lithium, sodium, potassium, magnesium or calcium, and wherein the improvement comprises(D) a borate ester.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: January 4, 2000
    Assignee: The Lubrizol Corporation
    Inventors: Carl F. Stachew, James R. Shanklin
  • Patent number: 6008165
    Abstract: 1. A composition for reducing the copper-lead bearing corrosion of a formulation that includes a major amount of an oil of lubrication viscosity and a minor amount of a corrosion-reducing additive comprising(A) a borated dispersant with a total base number of from 20 to 160 on an oil-free basis;(B) a metal salt of a phosphorus acid; and(C) a metal overbased composition comprising at least one carboxylate, phenate, or sulfonate wherein the metal is lithium, sodium, potassium, magnesium or calcium, and wherein the improvement comprises(D) a borate ester.The borated ester and borated dispersant provide from 20 to about 800 parts per million (ppm) mass of boron in the composition.
    Type: Grant
    Filed: July 31, 1998
    Date of Patent: December 28, 1999
    Assignee: The Lubrizol Corporation
    Inventors: James R. Shanklin, Carl F. Stachew
  • Patent number: 5985805
    Abstract: Novel colloidal calcium thio-phosphorous products are described which can be obtained by a process comprising adding at least one phosphorus sulphide to colloidal lime in the presence of solvent, then heating the mixture, with stirring, then eliminating the solvent. These products can be used as anti-wear and extreme pressure additives in lubricating oils.
    Type: Grant
    Filed: November 6, 1997
    Date of Patent: November 16, 1999
    Assignee: Institut Francais du Petrole
    Inventors: Bruno Delfort, Maurice Born, Agnes Chive
  • Patent number: 5922655
    Abstract: Magnesium low base number (LBN) sulphonates derived from high molecular weight sulphonic acids have low viscosity and are chloride free. The magnesium low base number sulphonates are not skin sensitisers. In their preparation neutralisation of high molecular weight sulphonic acids or partially neutralised soaps of high molecular weight sulphonic acids is completed by the use of a high base number sulphonate in conjunction with a carboxylic acid. The process does not require the use of chloride containing promoters and produces low chloride products.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: July 13, 1999
    Assignee: Exxon Chemical Company
    Inventors: Dominique Moulin, John Arthur Cleverley, Charles Herbert Bovington
  • Patent number: 5908816
    Abstract: The present invention is directed to a metal working oil composition comprising the following components (A), (B), and (C), and optionally (D):(A): a lubrication base oil,(B): 0.1-30% by weight of an overbasic alkaline earth metal sulfonate with respect to the total weight of the composition,(C): 0.1-30% by weight of an overbasic alkali metal sulfonate with respect to the total weight of the composition, and(D): 0-30% by weight of a sulfur-containing extreme-pressure agent.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: June 1, 1999
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Masahiro Kobessho, Komei Matsumoto
  • Patent number: 5804537
    Abstract: A low phosphorus passenger car motor oil containing an oil of lubricating viscosity as the major component and a tri-metal detergent mixture as a minor component, wherein the tri-metal detergent mixture comprises at least one calcium overbased metal detergent, at least one magnesium overbased metal detergent and at least one sodium overbased metal detergent, wherein the tri-metal detergent mixture is present in the oil composition in an amount such that the total TBN contributed to the oil composition by the tri-metal detergent mixture is from about 2 to about 12, and wherein the calcium overbased detergent contributes from about 8 to about 42% of the total TBN contributed by the tri-metal detergent mixture, the magnesium overbased detergent contributes from about 29 to about 60% of the total TBN contributed by the tri-metal detergent mixture, and the sodium overbased detergent contributes from about 15 to about 64% of the total TBN contributed by the tri-metal detergent mixture.
    Type: Grant
    Filed: November 21, 1997
    Date of Patent: September 8, 1998
    Assignee: Exxon Chemical Patents, Inc.
    Inventors: Alexander Bowman Boffa, Thomas Richard Bidwell
  • Patent number: 5792732
    Abstract: Lubricants containing overbased detergents with linear, alkyl substituted, aromatic component have superior water shedding and engine performance properties.
    Type: Grant
    Filed: May 22, 1997
    Date of Patent: August 11, 1998
    Assignee: Ethyl Additives Corp.
    Inventors: Tze Chi Jao, Ingrid Christiane Denys, Leonard Anthony Matthews, Nancy Anne Morton
  • Patent number: 5756432
    Abstract: Novel colloidal products are described, containing calcium hydroxide in the center of micelles which are stabilised in an organic medium by a shell of a surfactant, in a reversed micelle. The products are obtained by reacting calcium oxide CaO, calcium hydride CaH.sub.2 or calcium metal with water in an organic medium in the present of a surfactant such as an alkine-earth or alkali metal alkylaryl sulphonate. They are used mainly as synthesis intermediates in reactions requiring lime to be introduced into an organic medium, or as detergent additives in lubricating oils.
    Type: Grant
    Filed: July 6, 1995
    Date of Patent: May 26, 1998
    Assignee: Institut Francais du Petrole
    Inventors: Maurice Born, Agnes Chive, Bruno Delfort
  • Patent number: 5750477
    Abstract: A shear stable composition for reducing noise in a push belt continuously variable transmission. The composition comprises an oil of lubricating viscosity, an overbased metal salt of an organic acid and a shear stable viscosity index improver.
    Type: Grant
    Filed: July 10, 1995
    Date of Patent: May 12, 1998
    Assignee: The Lubrizol Corporation
    Inventors: James L. Sumiejski, Roy Fewkes, Craig Daniel Tipton
  • Patent number: 5726133
    Abstract: The present invention is directed to a low ash natural gas engine oil which contains an additive package including a particular combination of detergents and also containing other standard additives such as dispersants, antioxidants, antiwear agents, metal deactivators, antifoamants and pour point depressants and viscosity index improvers. The low ash natural gas engine oil exhibits reduced deposit formation and enhanced resistance to oil oxidation and nitration.
    Type: Grant
    Filed: February 27, 1996
    Date of Patent: March 10, 1998
    Assignee: Exxon Research and Engineering Company
    Inventors: Alan G. Blahey, James W. Finch
  • Patent number: 5726134
    Abstract: Multigrade lubricating oils which have acceptable performance in the VWInTD and Sequence VE engine tests and which are based on an ashless dispersant comprising an oil-soluble polymeric backbone having functional groups in which the hydrocarbon backbone is derived from an ethylene alpha-olefin (EAO) copolymers or alpha-olefin homo- or copolymer having greater than 30% of terminal vinylidene unsaturation achieve this performance by use of a detergent combination which includes a phenate in the formulation of the oils.
    Type: Grant
    Filed: December 13, 1996
    Date of Patent: March 10, 1998
    Assignee: Exxon Chemical Patents Inc.
    Inventor: David Robert Adams
  • Patent number: 5691283
    Abstract: In a motor vehicle, especially a heavy duty motor vehicle, having a transmission equipped with at least one cone-type synchronizer and an axle or differential gearing, the same lubricant is used for both such mechanisms. The lubricant has a viscosity grade level of from SAE 75W90 to SAE 85W140 and comprises base oil containing at least (i) Mannich base ashless dispersant; (ii) metal-free, sulphur-containing antiwear and/or extreme pressure agent; (iii) metal-free, phosphorus-containing and nitrogen-containing antiwear and/or extreme pressure agent; and (iv) overbased alkali or alkaline earth metal carboxylate, sulphonate or sulphurized phenate having a TBN of at least 145. The lubricant contains at most, if any, 100 ppm of metal as one or more metal-containing additive components other than (iv).
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 25, 1997
    Assignee: Ethyl Petroleum Additives Limited
    Inventors: Julia C. Poat, Graeme M. Wallace, David Kenvyn Walters, Ian Macpherson
  • Patent number: 5614480
    Abstract: A lubricating oil composition is described which comprises a major amount of an oil of lubricating viscosity and(A) at least about 1% by weight of at least one carboxylic derivative composition produced by reacting(A-1) at least one substituted succinic acylating agent containing at least about 50 carbon atoms in the substituent with(A-2) from about 0.5 equivalent up to about 2 moles, per equivalent of acylating agent (A-1), of at least one amine compound characterized by the presence within its structure of at least one HN<group; and(B) at least one alkali metal overbased salt of a hydrocarbyl-substituted carboxylic acid or a mixture of a hydrocarbyl carboxylic acid and a hydrocarbyl-substituted sulfonic acid having a metal ratio of greater than 2 in an amount sufficient to provide at least about 0.
    Type: Grant
    Filed: July 25, 1994
    Date of Patent: March 25, 1997
    Assignee: The Lubrizol Corporation
    Inventors: Mary F. Salomon, Kirk E. Davis, Jack L. Karn, John Cahoon
  • Patent number: 5607906
    Abstract: A grease composition for constant velocity joints which consists essentially of: (a) a base oil; (b) an urea thickener; (c) molybdenum disulfide; and (d) a metal salt or an overbasic metal salt selected from the group consisting of metal salts or overbasic metal salts of oxidized waxes, petroleum sulfonates, alkyl aryl sulfonates, salicylate, and phenates. In addition to (a) to (d), it may further contain, (e) an extreme pressure agent selected from the group consisting of a metal-free sulfur-phosphorus extreme pressure agent and molybdenum dithiophosphate, or (f) molybdenum dithiocarbamate. The grease composition exhibits excellent wear-resistance and pitting-inhibitory effect.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: March 4, 1997
    Assignee: Kyodo Yushi Co., Ltd.
    Inventors: Takashi Okaniwa, Hisayuki Osawa
  • Patent number: 5602084
    Abstract: An additive concentrate preferably having a TBN greater than 300 suitable for incorporation in a finished lubricating oil composition, the additive concentrate comprising(a) a lubricating oil, and(b) a lubricating oil soluble detergent which is an overbased metal salt obtained by an overbasing process including a carbonation step and modified by reaction to incorporate from greater than 2 to less than 40% by weight based on the weight of the concentrate of either (i) at least one carboxylic acid having the formula (I): ##STR1## wherein R is a C.sub.10 to C.sub.24 alkyl or alkenyl group and R.sup.1 is hydrogen, a C.sub.1 to C.sub.4 alkyl group or a --CH.sub.2 --COOH group, or an anhydride or an ester derivative thereof, or (ii) a di- or polycarboxylic acid containing from 36 to 100 carbon atoms or an anhydride or an ester thereof, and further modified to incorporate by addition prior to carbonation a hindered phenol or naphthol having antioxidant activity.
    Type: Grant
    Filed: May 24, 1995
    Date of Patent: February 11, 1997
    Assignee: BP Chemicals (Additives) Limited
    Inventor: David J. Moreton
  • Patent number: 5599780
    Abstract: A metal working oil composition having a kinematic viscosity of 20 cSt or less at a temperature of 40.degree. C. is herein disclosed which comprises (A) 10% by weight or more of an n-.alpha.-olefin (e.g. 1-hexadecene) and (B) an overbased sulfonate having a total base number of 350 mg.multidot.KOH/g or more in such an amount that the total base number of the composition is 12.5 mg.multidot.KOH/g or more. The metal working oil composition is particularly suitable as a press lubricant for aluminum alloys, has an excellent mass workability, and is more excellent in coating workability, lubricity, degreasing properties, weldability, etc. than a conventional solid coating type lubricant.
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: February 4, 1997
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Sabro Koyama, Tahei Okada, Yoshiaki Aiki
  • Patent number: 5589444
    Abstract: A grease composition for constant velocity joints consists essentially of: (a) a base oil; (b) an urea thickener; (c) molybdenum disulfide; (d) a calcium salt or an overbasic calcium salt selected from the group consisting of calcium salts or overbasic calcium salts of oxidized waxes, petroleum sulfonates, alkyl aryl sulfonates, salicylate, and phenates; (e) a metal-free sulfur-phosphorus extreme pressure agent; and (f) molybdenum dithiocarbamate. The grease composition exhibits excellent wear-resistance and pitting-inhibitory effect.
    Type: Grant
    Filed: June 6, 1996
    Date of Patent: December 31, 1996
    Assignee: Kyodo Yushi Co., Ltd.
    Inventor: Ko Hatakeyama
  • Patent number: 5578235
    Abstract: A method of preparing a calcium sulfonate having at least a TBN of 500 where the method comprises reacting CaO, Ca(OH).sub.2 and H.sub.2 O, and synthetic monoalkylbenzene sulfonate and synthetic dialkylbenzene sulfonate in certain molar ratios, respectively, for a sufficient length of time to produce the overbased calcium sulfonate.
    Type: Grant
    Filed: October 5, 1994
    Date of Patent: November 26, 1996
    Assignee: Ethyl Additives Corporation
    Inventors: Tze-Chi Jao, Jayne M. Vaccaro, William J. Powers, III
  • Patent number: 5558802
    Abstract: The detergent inhibitor package has been found to influence the viscometric properties of SAE 5W lubricants that have less than 5 mass % of non-conventional basestock, use a basestock that has an average base stock neutral number not less than 105, a calibrated Noack volatility of not more than 22 wt. % loss, and a kinematic viscosity at 100.degree. C. (kV 100, measured by ASTM D445) less than 12.5 cSt. In particular, neutral and overbased calcium salts of organic acids have been found to increase low temperature high shear viscosity when measured in the CCS (ASTM D5293). These salts which are widely used for their detergency and acid neutralization properties should be avoided altogether or used at a level not exceeding 0.0007 moles of organic calcium salt per 100 grams of lubricant. Where diesel performance is required, for example to lubricate passenger car diesel engines, a calcium salt of an organic acid may be required to control piston deposits.
    Type: Grant
    Filed: September 14, 1995
    Date of Patent: September 24, 1996
    Assignee: Exxon Chemical Patents Inc
    Inventor: Michael Dowling