With Hydrocarbon Polymer, Organic Halogen Compound, Or Organic Non-carboxylic Acid Ester Chalcogen Compound Patents (Class 508/499)
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Patent number: 11584896Abstract: A lubricant composition that comprises a hydrocarbon base oil, a polar viscosity improver; and an esterified polyalkylene glycol: R1[O(R2O)n(R3O)m(C?O)R4]p, wherein R1 is a linear alkyl having 1 to 18 carbon atoms, a branched alkyl having 4 to 18 carbon atoms or an aryl with 6 to 30 carbon atoms; R2O is an oxypropylene moiety derived from 1, 2-propylene oxide; R3O is an oxybutylene moiety derived from butylene oxide, wherein R2O and R3O are in a block or a random distribution; R4 is a linear alkyl with 1 to 18 carbon atoms, a branched alkyl with 4 to 18 carbon atoms or an aryl with 6 to 18 carbon atoms; n and m are each independently integers ranging from 0 to 20 wherein n+m is greater than 0, and p is an integer from 1 to 4. The lubricant composition may have a viscosity index of at least 150, a kinematic viscosity at 100° C. from 2 to 5 centistokes and a kinematic viscosity at ?20° C. of at most 600 centistokes.Type: GrantFiled: March 5, 2019Date of Patent: February 21, 2023Assignee: DOW GLOBAL TECHNOLOGIES LLCInventors: Yaokun Han, Martin R. Greaves, Yong Zhao, Cheng Shen, Tao Wang, Jieying Chen
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Patent number: 11566200Abstract: The present disclosure provides A lubricant composition comprises an antioxidant; and an esterified polyalkylene glycol: R1[O(R2O)n(R3O)m(C?O)R4]p, wherein R1 is a linear alkyl having 1 to 18 carbon atoms, a branched alkyl having 4 to 18 carbon atoms or an aryl with 6 to 30 carbon atoms; R2O is an oxypropylene moiety derived from 1,2-propylene oxide; R3O is an oxybutylene moiety derived from butylene oxide, wherein R2O and R3O are in a block or a random distribution; R4 is a linear alkyl with 1 to 18 carbon atoms, a branched alkyl with 4 to 18 carbon atoms or an aryl with 6 to 18 carbon atoms; n and m are each independently integers ranging from 0 to 20 wherein n+m is greater than 0, and p is an integer from 1 to 4, wherein the antioxidant is present in an amount by weight of at least 0.5% to 20% based upon the weight of the antioxidant and the esterified polyalkylene glycol and the antioxidant is soluble in the esterified polyalkylene glycol in an amount of at least 0.5% by weight.Type: GrantFiled: March 5, 2019Date of Patent: January 31, 2023Assignee: DOW GLOBAL TECHNOLOGIES LLCInventors: Yaokun Han, Martin R. Greaves, Yong Zhao, Cheng Shen, Tao Wang, Jieying Chen
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Patent number: 11326121Abstract: Lubricating compositions are described, the lubricating compositions comprising a base oil component and an additive component, wherein the additive component comprises a non-silicone anti-foaming agent.Type: GrantFiled: July 6, 2021Date of Patent: May 10, 2022Assignee: METSS Corp.Inventors: Brian R. Collett, Angela Theys, Michelle Docter, Joseph Sanders, Kenneth J. Heater
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Patent number: 11254890Abstract: The purpose of the present invention is to provide a lubricant composition which can be applied as a gear oil for a high-output and high-speed gear mechanism, and whereby fuel saving as well as further wear resistance in a bearing of a pinion gear can be realized while maintaining excellent durability, seizure resistance, and stability are maintained. A lubricant composition containing a Fischer-Tropsch-derived base oil, a poly alpha-olefin, and an ester compound, and further containing an unsaturated fatty acid and/or a partial ester compound of an unsaturated fatty acid and a polyol, wherein the partial ester compound of an unsaturated fatty acid includes a monoester compound of an unsaturated fatty acid and a polyol in a ratio of 50% by mass with respect to the total amount of the partial ester compound, and the SAE viscosity grade of the lubricant composition is 75W-85 or lower.Type: GrantFiled: April 18, 2019Date of Patent: February 22, 2022Assignees: TOYOTA JIDOSHA KABUSHIKI KAISHA, SHELL LUBRICANTS JAPAN K.K.Inventors: Ryuji Maruyama, Kenji Ohara, Keiichi Moriki, Mitsuhiro Nagakari, Misato Kishi, Kotaro Hiraga, Takatoshi Shinyoshi
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Patent number: 10731102Abstract: In the field of lubricating compositions for motor vehicles, there is disclosed a lubricating composition of a grade according to the SAEJ300 classification defined by the formula (X) W (Y) wherein X represents 0 or 5 and Y represents an integer ranging from 4 to 20. This lubricating composition includes at least one polyalphaolefinic oil (PAO), from 10 to 80% by weight of the composition of at least one oil of group V and at least one comb polymer. Also isclosed is the use of this lubricating composition for improving the Fuel Eco (FE) of a lubricant or for reducing the fuel consumption of an engine, in particular a motor vehicle engine, notably a motor of a hybrid vehicle.Type: GrantFiled: April 29, 2016Date of Patent: August 4, 2020Assignee: TOTAL MARKETING SERVICESInventors: Laura Broutin, Nicolas Obrecht
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Patent number: 8906836Abstract: Disclosed is a lubricating oil composition which includes a diester-based base oil having an asymmetric structure in which the number of carbons of the alkyl chain bound to one ester group with respect to a central atom is two more than that of the alkyl group bound to the other ester group, and which has low viscosity and a comparatively small amount of evaporation at high temperature. When this composition is used for a motor of a small hard disk, power consumption can be reduced and stability at high temperature can be enhanced.Type: GrantFiled: October 12, 2011Date of Patent: December 9, 2014Assignee: Samsung Electro-Machanics Co., Ltd.Inventors: Ha Yong Jung, Myung Hwa Choi, Wang Hyun Kwon, Hyung Kyu Kim, Kun Kim
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Publication number: 20140296118Abstract: Disclosed is a lubricant composition for use in association with a device involving metal-to-metal contact of moving parts, the composition comprising (a) a base stock comprising at least one low viscosity poly-alpha-olefin; (b) a viscosity improver comprising at least one high viscosity poly-alpha-olefin; and (c) a performance additive comprising at least one compound effective to improve at least one property of the lubricant and/or the performance of the equipment in which the lubricant is to be used.Type: ApplicationFiled: March 27, 2014Publication date: October 2, 2014Applicant: Cognis IP Management GmbHInventors: Michael Costello, Mark Witschger
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Patent number: 8772562Abstract: A process for converting feedstock triglycerides to lube basestocks. The process has the steps of (a) metathesizing the feedstock triglycerides with ethylene in the presence of a metathesis catalyst to form alpha olefins and medium-chain triglycerides and (b) hydroisomerizing the medium-chain triglycerides in the presence of a hydroisomerization catalyst and hydrogen to form methyl-branched triglycerides. The alpha olefins may be oligomerized in the presence of an oligomerization catalyst to form poly(alpha olefins).Type: GrantFiled: November 10, 2010Date of Patent: July 8, 2014Assignee: ExxonMobil Research and Engineering CompanyInventors: Kun Wang, Margaret May-Som Wu, Alan Anthony Galuska, David Lawrence Stern
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Publication number: 20140039229Abstract: A drag reducing composition and method of use wherein the drag reducing composition comprises a polyolefin, drag reducing polymer, a carrier or suspending medium, and a polycarboxylate dispersion agent.Type: ApplicationFiled: August 23, 2011Publication date: February 6, 2014Applicant: FlowChem, Ltd.Inventors: Brad A. Bucher, Tom M. Weatherford
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Patent number: 8633143Abstract: Provided herein are compositions comprising at least one estolide compound of formula: in which n is an integer equal to or greater than 0; m is an integer equal to or greater than 1; R1, independently for each occurrence, is selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; R2 is selected from hydrogen and optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; and R3 and R4, independently for each occurrence, are selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched. Also provided are uses of the compositions described herein.Type: GrantFiled: January 30, 2013Date of Patent: January 21, 2014Assignee: Biosynthetic Technologies, LLCInventors: Travis Thompson, Jakob Bredsguard, Jeremy Forest
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Patent number: 8476205Abstract: The invention relates to oil compositions containing chromium catalyzed high viscosity index polyalphaolefins (HVI-PAO). In one embodiment the oil formulation comprises a chromium catalyzed HVI-PAO with a viscosity greater than 125 cSt kv 100° C. and a viscosity index greater than 100, a second base stock with a viscosity of at least 2 cSt kv 100° C. and less than 60 cSt kv 100° C. wherein the second base stock is at least 120 cSt kv 100° C. less than the chromium HVI-PAO, an ester with a viscosity of at least 2 and less than 6, the ester chosen from the group consisting of monoester, di-octyl sebacate and any combination thereof comprising more than 10 weight percent and less than 30 weight percent of the oil formulation, the oil formulation having a viscosity index of greater than 180.Type: GrantFiled: October 1, 2009Date of Patent: July 2, 2013Assignee: ExxonMobil Research and Engineering CompanyInventors: Gordon H. Lee, Kevin J. Kelly, Marcia G. Rogers, Kevin A. Chinn
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Publication number: 20130157909Abstract: Lubricant compositions including a random or block copolymer first high-EO content polyalkylene glycol, a random copolymer second polyalkylene glycol based on propylene oxide and butylene oxide or a second polyalkylene homopolymer having propylene oxide or butylenes oxide units and at least one corrosion inhibitor selected from the group of sarcosines, amine phosphates, and calcium dinonylnaphthalenesulfonate/carboxylates are provided. Lubricant compositions for extreme conditions are also provided.Type: ApplicationFiled: August 17, 2011Publication date: June 20, 2013Applicant: Dow Global Technologies LLCInventors: Martin R. Greaves, Daniel Zweifel, Evelyn A. Zaugg-Hoozemans
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Patent number: 8399389Abstract: Provided herein are compositions comprising at least one estolide compound of formula: in which n is an integer equal to or greater than 0; m is an integer equal to or greater than 1; R1, independently for each occurrence, is selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; R2 is selected from hydrogen and optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; and R3 and R4, independently for each occurrence, are selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched. Also provided are uses of the compositions described herein.Type: GrantFiled: August 16, 2012Date of Patent: March 19, 2013Assignee: Biosynthetic Technologies, LLCInventors: Jakob Bredsguard, Jeremy Forest, Travis Thompson
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Publication number: 20120322897Abstract: Provided herein are estolide compositions having high oxidative stability, said compositions comprising at least one compound of formula: in which n is an integer equal to or greater than 0; m is an integer equal to or greater than 1; R1, independently for each occurrence, is selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; R2 is selected from hydrogen and optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; and R3 and R4, independently for each occurrence, are selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched. Also provided herein are uses for the compositions and methods of preparing the same.Type: ApplicationFiled: May 30, 2012Publication date: December 20, 2012Inventors: Jakob BREDSGUARD, Jeremy FOREST, Travis THOMPSON
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Publication number: 20120289445Abstract: A lubricant composition characterized as having a viscosity of less than about 150,000 cP at ?40° C., a kinematic viscosity of less than about 150,000 cSt at ?40° C., and a kinematic viscosity of at least about 18.5 cSt at 100° C. for use in association with a device involving metal to metal contact of moving parts comprising: (a) base-stock comprising (i) at least one relatively low viscosity polyalphaolefin, (ii) at least one ester, and at least one Group III base oil; (b) viscosity improver comprising (i) at least one relatively high viscosity polyalphaolefin, and (ii) a least one olefin copolymer; (c) a performance additive comprising at least one additive effective to improve at least one property of the lubricant and/or the performance of the equipment in which the lubricant is to be used; (d) at least one pour-point depressant; and, optionally, (e) at least one antifoam agent.Type: ApplicationFiled: March 8, 2012Publication date: November 15, 2012Applicant: Cognis IP Management GmbHInventors: Vasudevan Balasubramaniam, Mark Witschger, Uwe Förster
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Patent number: 8293692Abstract: The present invention provides a lubricating oil composition comprising at least one type of base oil selected from mineral oils and synthetic oils, and a succinate ester and a sarcosinic acid as rust prevention agents. The succinate ester content is preferably set at 0.01 to 0.1 wt. %, and the sarcosinic acid content is preferably set at 0.001 to 0.01 wt. %. Further, they are preferably set such that the resulting weight ratio of the succinate ester content and sarcosinic acid content is 1:0.01 to 0.7. The lubricating oil composition according to the present invention shows excellent rust prevention properties and a satisfactorily long oxidation lifetime. Further it allows to attain a high level of anti-sludge performance and extreme pressure performance and lubrication performance, even when it is used for example in turbine bearings in combined cycle generators having multiplier gears operated under severe high temperature and high pressure conditions.Type: GrantFiled: July 18, 2007Date of Patent: October 23, 2012Assignee: Shell Oil CompanyInventor: Tohru Ikai
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Patent number: 8287754Abstract: Provided herein are compostions comprising at least one estolide compound of formula: in which n is an integer equal to or greater than 0; m is an integer equal to or greater than 1; R1, independently for each occurrence, is selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; R2 is selected from hydrogen and optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched; and R3 and R4, independently for each occurrence, are selected from optionally substituted alkyl that is saturated or unsaturated, and branched or unbranched. Also provided are uses of the compositions described herein.Type: GrantFiled: June 25, 2012Date of Patent: October 16, 2012Assignee: LubriGreen Biosynthetics, L.L.C.Inventors: Jakob Bredsguard, Jeremy Forest, Travis Thompson
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Patent number: 8247358Abstract: The invention relates to oil compositions containing metallocene catalyzed high viscosity index polyalphaolefins (HVI-PAO). In one embodiment the oil formulation comprises a metallocene catalyzed HVI-PAO with a viscosity greater than 125 cSt kv 100° C. and a viscosity index greater than 100, a second base stock with a viscosity of at least 2 cSt kv 100° C. and less than 60 cSt kv 100° C. wherein the second base stock is at least 60 cSt kv 100° C. less than the metallocene HVI-PAO, an ester with a viscosity of at least 2 and less than 6, the ester comprising more than 10 weight percent and less than 30 weight percent of the oil formulation, the oil formulation having a viscosity index of greater than 195. The use of metallocene catalyzed HVI-PAOs in a bimodal blend provides advantages in improved shear stability, and other properties related to shear stability.Type: GrantFiled: October 1, 2009Date of Patent: August 21, 2012Assignee: ExxonMobil Research and Engineering CompanyInventors: Gordon H. Lee, Kevin A. Chinn
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Publication number: 20120115762Abstract: A process for converting feedstock triglycerides to lube basestocks. The process has the steps of (a) metathesizing the feedstock triglycerides with ethylene in the presence of a metathesis catalyst to form alpha olefins and medium-chain triglycerides and (b) hydroisomerizing the medium-chain triglycerides in the presence of a hydroisomerization catalyst and hydrogen to form methyl-branched triglycerides. The alpha olefins may be oligomerized in the presence of an oligomerization catalyst to form poly(alpha olefins).Type: ApplicationFiled: November 10, 2010Publication date: May 10, 2012Applicant: ExxonMobil Research and Engineering CompanyInventors: Kun Wang, Margaret May-Som Wu, Alan Anthony Galuska, David Lawrence Stern
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Patent number: 8168573Abstract: The present invention provides a lubricating oil composition comprising a mixture of both a poly-alpha-olefin and an ester compound, the lubricating oil composition having an SAE viscosity grade of 75W-85, satisfying GL-5 in terms of API gear oil designation and having a viscosity index of 160 or more. The above mixture of the poly-alpha-olefin and ester compound is preferably contained in an amount of from 75 to 90 wt % with reference to the total amount of the lubricating oil composition. The poly-alpha-olefin is preferably a mixture of a poly-alpha-olefin having low viscosity of from about 3 to 6 mm2/s at 100° C. and a poly-alpha-olefin having high viscosity of from about 35 to 45 mm2/s at 100° C.Type: GrantFiled: December 24, 2007Date of Patent: May 1, 2012Assignee: Shell Oil CompanyInventors: Keiichi Moriki, Eiji Nagatomi, Kenji Ueno, Koji Saito, Kiyonari Ishikawa, Hiroshi Fujito
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Publication number: 20110247578Abstract: Disclosed is a lubricant base stock, exhibiting a combination of high flash point, low evaporation loss, high viscosity and unexpectedly exceptionally low pour point and high viscosity index value. Said lubricant base stock comprises at least one ester between 2-propylheptanoic acid and at least one 2,2-substituted 1,3-propanediol and/or at least one dimer, trimer or polymer thereof and/or at least one alkoxylated species of a said 2,2-substituted 1,3-propanediol or a said dimer, trimer or polymer thereof.Type: ApplicationFiled: October 16, 2009Publication date: October 13, 2011Applicant: PERSTORP SPECIALTY CHEMICALS ABInventors: Robert Jansson, Irma Auvinen
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Publication number: 20110237478Abstract: Disclosed is a lubricant composition for use in association with a device involving metal-to-metal contact of moving parts, the composition comprising (a) a base stock comprising at least one low viscosity poly-alpha-olefin; (b) a viscosity improver comprising at least one high viscosity poly-alpha-olefin; and (c) a performance additive comprising at least one compound effective to improve at least one property of the lubricant and/or the performance of the equipment in which the lubricant is to be used.Type: ApplicationFiled: September 16, 2009Publication date: September 29, 2011Applicant: COGNIS IP MANAGEMENT GMBHInventors: Michael T. Costello, Mark Witschger
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Publication number: 20110082063Abstract: A method of improving air release is disclosed. The method comprises obtaining a lubricant comprising two base stocks. The first base stock comprises a viscosity greater than 100 cSt, Kv100° C. The second base stock comprises a viscosity less than 10 cSt, Kv100° C. In addition, a lubricant formulation and method of blending a lubricant formulation is also disclosed. The lubricant formulation comprises at least two base stocks. At least 5 percent and no more than 90 percent of a first base stock comprising oil with a viscosity greater than 300 cSt, Kv100° C. At least 5 percent and no more than 90 percent of a second base stock comprising oil with a viscosity less than 10 cSt, Kv100° C.Type: ApplicationFiled: October 28, 2010Publication date: April 7, 2011Applicant: ExxonMobil Research and Engineering CompanyInventors: James T. Carey, Angela S. Galiano-Roth, Thomas G. Dietz
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Publication number: 20100160199Abstract: The present invention relates to metal processing lubricant compositions that are based on polyhydrocarbyl esters of aliphatic polyols, in particular tetrahydrocarbyl esters of pentaerythritol, wherein at least one hydrocarbyl group of the tetrahydrocarbyl ester comprises 6-14 carbon atoms and the other hydrocarbyl groups comprise 6-20 carbon atoms. The compositions are in particular suitable for metal forming operations, e.g. a cold rolling operation, a hot rolling operation or a drawing operation, and metal removing operations, e.g. grinding, milling, cutting, turning and honing.Type: ApplicationFiled: November 8, 2007Publication date: June 24, 2010Inventors: Hendrik Laurens Mulder, Jan Baptist Andreas Felix Smeulders, Robert Alexander Herrendorf
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Publication number: 20100105589Abstract: The invention relates to oil compositions containing chromium catalyzed high viscosity index polyalphaolefins (HVI-PAO). In one embodiment the oil formulation comprises a chromium catalyzed HVI-PAO with a viscosity greater than 125 cSt kv 100° C. and a viscosity index greater than 100, a second base stock with a viscosity of at least 2 cSt kv 100° C. and less than 60 cSt kv 100° C. wherein the second base stock is at least 120 cSt kv 100° C. less than the chromium HVI-PAO, an ester with a viscosity of at least 2 and less than 6, the ester chosen from the group consisting of monoester, di-octyl sebacate and any combination thereof comprising more than 10 weight percent and less than 30 weight percent of the oil formulation, the oil formulation having a viscosity index of greater than 180.Type: ApplicationFiled: October 1, 2009Publication date: April 29, 2010Inventors: Gordon H. Lee, Kevin J. Kelly, Marcia G. Rogers, Kevin A. Chinn
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Publication number: 20100087349Abstract: The invention relates to oil compositions containing metallocene catalyzed high viscosity index polyalphaolefins (HVI-PAO). In one embodiment the oil formulation comprises a metallocene catalyzed HVI-PAO with a viscosity greater than 125 cSt kv 100° C. and a viscosity index greater than 100, a second base stock with a viscosity of at least 2 cSt kv 100° C. and less than 60 cSt kv 100° C. wherein the second base stock is at least 60 cSt kv 100° C. less than the metallocene HVI-PAO, an ester with a viscosity of at least 2 and less than 6, the ester comprising more than 10 weight percent and less than 30 weight percent of the oil formulation, the oil formulation having a viscosity index of greater than 195. The use of metallocene catalyzed HVI-PAOs in a bimodal blend provides advantages in improved shear stability, and other properties related to shear stability.Type: ApplicationFiled: October 1, 2009Publication date: April 8, 2010Inventors: Gordon H. Lee, Kevin A. Chinn
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Publication number: 20100087348Abstract: The present invention provides a lubricating oil composition comprising a mixture of both a poly-alpha-olefin and an ester compound, the lubricating oil composition having an SAE viscosity grade of 75 W-85, satisfying GL-5 in terms of API gear oil designation and having a viscosity index of 160 or more. The above mixture of the poly-alpha-olefin and ester compound is preferably contained in an amount of from 75 to 90 wt % with reference to the total amount of the lubricating oil composition. The poly-alpha-olefin is preferably a mixture of a poly-alpha-olefin having low viscosity of from about 3 to 6 mm2/s at 100° C. and a poly-alpha-olefin having high viscosity of from about 35 to 45 mm2/s at 100° C.Type: ApplicationFiled: December 24, 2007Publication date: April 8, 2010Inventors: Keiichi Moriki, Eiji Nagatomi, Kenji Ueno, Koji Saito, Kiyonari Ishikawa, Hiroshi Fujito
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Publication number: 20090312209Abstract: The present invention provides a lubricating oil composition comprising at least one type of base oil selected from mineral oils and synthetic oils, and a succinate ester and a sarcosinic acid as rust prevention agents. The succinate ester content is preferably set at 0.01 to 0.1 wt. %, and the sarcosinic acid content is preferably set at 0.001 to 0.01 wt. %. Further, they are preferably set such that the resulting weight ratio of the succinate ester content and sarcosinic acid content is 1:0.01 to 0.7. The lubricating oil composition according to the present invention shows excellent rust prevention properties and a satisfactorily long oxidation lifetime. Further it allows to attain a high level of anti-sludge performance and extreme pressure performance and lubrication performance, even when it is used for example in turbine bearings in combined cycle generators having multiplier gears operated under severe high temperature and high pressure conditions.Type: ApplicationFiled: July 18, 2007Publication date: December 17, 2009Applicant: SHELL INTERNATIONAL RESEARCH MAATSCHAPPIJ B.V.Inventor: Tohru Ikai
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Patent number: 7135441Abstract: A grease composition is disclosed, wherein a metallic soap-base thickener containing a long-fiber material having a major axis part length of at least 3 ?m is blended with a base oil obtained by mixing a lubricating oil having a polar group within the molecule structure and a non-polar lubricating oil, which can improve the initial sound (cage sound) of bearing at the starting of operation in a low-temperature environment and is effective on the reduction of fretting damage (abrasion) or torque, and also a rolling bearing and a linear acting apparatus each obtained by packing the grease composition are disclosed, which exhibit excellent low-temperature acoustic property and are reduced in the fretting damage (abrasion) or torque.Type: GrantFiled: November 1, 2001Date of Patent: November 14, 2006Assignee: NSK Ltd.Inventors: Youichiro Sugimori, Atsushi Yokouchi, Hisao Sumiya, Michiharu Naka
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Patent number: 6841522Abstract: This invention relates to lubricant compositions comprising a polyalkylene glycol and an ester wherein the polyalkylene glycol has the formula (I): RO—(CH2CH(CH3)O)n—CH3 where R is an alkyl group with 1 to 15 carbon atoms and n=1 to 35. The lubricant compositions of the invention do not readily form stable emulsions with water. This feature makes the lubricant compositions of the invention particularly suitable for use with air compressors where it is very difficult to exclude moisture.Type: GrantFiled: April 27, 2001Date of Patent: January 11, 2005Assignee: Imperial Chemical Industries PLCInventors: Mitchell Corner, Peter Timothy Gibb, Steven James Randles, Robert Ian George Thompson
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Patent number: 6794342Abstract: In a grease composition which essentially comprises a base oil and a thickener, a mixture of a urea compound and lithium soap is blended as the thickener. The content of the urea compound in the thickener is preferably set to 20 to 80 wt %. As the urea compound, an alkyl group- or cyclohexyl group-terminated diurea compound, or, particularly, a diurea compound in which the diisocyanate component is 4,4′-diphenylmethane diisocyanate is preferably used. In a rolling bearing which is lubricated by the grease composition, the acoustic performance is largely improved by a synergistic action of the lithium soap and the urea compound, and simultaneously also the anti-fretting property is enhanced by an action of the urea compound.Type: GrantFiled: March 14, 2002Date of Patent: September 21, 2004Assignee: Koyo Seiko Co., Ltd.Inventors: Hiroshi Komiya, Atsushi Yao, Nao Ito, Youzou Taniguchi
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Patent number: 6774091Abstract: A lubricant additive formulation for increasing the performance of conventional engine lubricants for use as an engine treatment oil additive formulated for addition to conventional motor oil to improve the lubricating properties of the engine oil and enhance the performance of the engine. A preferred embodiment of the engine treatment oil additive comprises a blend of chemical constituents including a base stock selected from a synthetic base stock, a mineral oil base stock, and a severely hydrocracked base stock or combinations thereof, an oil soluble molybdenum additive, dispersant inhibitor, and selected additives such as polytetrafluoroethylene, viscosity index improvers, and extreme pressure wear agent used in combination with a conventional crankcase lubricant at about a 20 to about a 25% volume/percent or as a complete motor oil. Additional components may be added to the engine treatment oil additive formulation to enhance specific properties for special applications.Type: GrantFiled: July 26, 2002Date of Patent: August 10, 2004Assignee: Ashland Inc.Inventors: Michael A. Dituro, Richard J. Baumgart, Frances E. Lockwood
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Patent number: 6713438Abstract: High performance engine oils and other liquid lubricants comprise a liquid lubricant basestock of low viscosity from 1.5 to 12 cSt (100C) with two dissolved polymer components of differing molecular weights. The basestock is preferably a single PAO or blend of PAOs with a co-basestock component which is preferably an ester or an alkylated aromatic of comparable viscosity. The lower molecular weight polymer is highly viscoelastic in character and is preferably an HVI-PAO; this component in the lubricant which provides unexpectedly high film thickness and unexpectedly good wear protection under conditions where the second, higher molecular weight polymer may lose some or all of its thickening power. The use of the highly viscoelastic low molecular weight polymer in combination with the higher molecular weight thickener enables the production of very widely cross-graded engine oils, especially oils with a low temperature grading of 0W or better.Type: GrantFiled: March 24, 1999Date of Patent: March 30, 2004Assignee: Mobil Oil CorporationInventors: David J. Baillargeon, Raymond J. Bergstra, Andrew Jackson, William L. Maxwell, G. James Johnston, Robert A. Pache
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Patent number: 6638417Abstract: A traction drive fluid is provided containing a naphthenic compound represented by the formula: wherein R1 is an alkyl group having 1 to 8 carbon atoms, R2 through R4 are each independently hydrogen or an alkyl group having 1 to 8 carbon atoms, and A is a naphthenic hydrocarbon group, a saturated polycyclic hydrocarbon group, a naphthenic ester group, or a naphthenic carbonate group.Type: GrantFiled: December 15, 2000Date of Patent: October 28, 2003Assignee: Nippon Mitsubishi Oil CorporationInventors: Noboru Ishida, Shinichi Shirahama, Tetsuo Okawa, Shigeki Matsui
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Publication number: 20020002122Abstract: This invention relates to lubricant compositions comprising a polyalkylene glycol and an ester wherein the polyalkylene glycol has the formula:Type: ApplicationFiled: April 27, 2001Publication date: January 3, 2002Inventors: Mitchell Corner, Peter Timothy Gibb, Steven James Randles, Robert Ian George Thompson
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Patent number: 6242393Abstract: A traction drive fluid comprises a tractant selected from the specific types of hydrocarbons, carboxylates and carbonate, optionally an effective amount of a base oil selected from a mineral oil and a synthetic oil and additives selected from a viscosity index improver, a ashless dispersant, a phosphorus-containing additive, a friction adjusting agent, a metallic detergent, an oxidation inhibitor, a polar additive, a corrosion inhibitor, a rubber swelling agent, a antifoamer and a colorant.Type: GrantFiled: April 8, 1999Date of Patent: June 5, 2001Assignee: Nippon Mitsubishi Oil CorporationInventors: Noboru Ishida, Junya Kohno, Shinichi Shirahama, Tetsuo Okawa
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Patent number: 6172013Abstract: Lubricating oil compositions having enhanced friction coefficient and wear properties are provided by compositions of an oil of lubricating viscosity with additives of molybdenum and diesters of aliphatic or aromatic dicarboxylic acids.Type: GrantFiled: September 17, 1997Date of Patent: January 9, 2001Assignee: Exxon Chemical Patents IncInventors: David G. L. Holt, Daniel P. Leta
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Patent number: 5994279Abstract: A lubricant composition especially useful for saw guide use comprises a base oil composed of at least one synthetic ester and a thickener composed of a styrene-olefin copolymer dissolved in a vegetable oil. The thickener is present in an amount sufficient to provide the lubricant with a viscosity at 40.degree. C. of greater than about 100 cSt.Type: GrantFiled: January 15, 1999Date of Patent: November 30, 1999Assignee: Exxon Research and Engineering CompanyInventors: Gerald Felsky, Chung-Lai Wong, Todd Timothy Nadasdi
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Patent number: 5985804Abstract: It is disclosed that succinic acid and its derivatives that contain a branched aliphatic group on the 2 or alpha position of succinic acid form surfactants that exhibit a high order of or bioresistance to bacteriological degradation. Further, it has been discovered that these novel surfactants can be employed to prepare novel oil-in-water emulsions with lube oils such as mineral oil that are effective as cutting fluids for machining operations but provide an improved resistance to biodegradation to the cutting oil so formulated, without resorting to the inclusion of conventional biocides in the formulation. It has also been discovered that the bioresistance of the cutting fluid emulsion formulation can be further enhanced by using a branched aliphatic hydrocarbon oligomer or polymer as the lubricative component in the formulation. Cutting fluid emulsions so formulated are effective fluids in prolonging tool life and facilitating machining operations.Type: GrantFiled: March 18, 1992Date of Patent: November 16, 1999Assignee: Mobil Oil CorporationInventors: Henry Ashjian, Thomas J. Giacobbe, Frederick C. Loveless, Carl R. Mackerer, Norman J. Novick, Thomas P. O'Brien
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Patent number: 5962377Abstract: A lubricant additive formulation for increasing the performance of conventional engine lubricants for use as an engine treatment oil additive formulated for addition to conventional motor oil to improve the lubricating properties of the engine oil and enhance the performance of the engine. The preferred embodiment of the engine treatment oil additive comprises a synergistic blend of chemical constituents including an oil soluble molybdenum additive, polyalphaolefin, ester such as a polyolester or diester, polytetrafluoroethylene, dispersant inhibitor containing zinc dithiophosphate, mineral oil base stock, viscosity index improvers, and borate ester used in combination with a conventional crankcase lubricant at about a 20 to about a 25% volume/percent.Type: GrantFiled: June 24, 1997Date of Patent: October 5, 1999Assignee: Ashland Inc.Inventors: Richard J. Baumgart, Frances E. Lockwood, Michael A. Dituro
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Patent number: 5942474Abstract: A two-cycle oil which is 10 to 20% of an ester of technical grade pentaerythriol with a mixture of (a) branched C8 and (b) mixed linear C8 and C10 monocarboxylic acids, having a viscosity of 6 to 8 cSt at 100.degree. C., 18 to 30% of an oxo alcohol ester of a dicarboxylic acid having a viscosity of 3 to 10 cSt at 100.degree. C., 30 to 40% of a polybutene having an Mn of 300-1500, 15 to 35% of a normally liquid solvent having a boiling point up to 300.degree. C., 0 to 5% of other lubricating oil additives.Type: GrantFiled: May 19, 1998Date of Patent: August 24, 1999Assignee: Exxon Chemical Patents IncInventors: George Mortimer Tiffany, Eric Lewis, George C L'Heureux
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Patent number: 5756430Abstract: Mist oil lubricants are disclosed based on polycarboxylic acid esters as the base oil which have added 1 to 5% of polyisobutylene Mn 400-2500 as stray mist suppressants.Type: GrantFiled: May 13, 1997Date of Patent: May 26, 1998Assignee: Exxon Chemical Patents IncInventor: James Zielinski
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Patent number: 5648018Abstract: Hydrogenated oligomers of C.sub.4 -C.sub.20 .alpha.-olefins are used in minor amounts to improve the lubricity of ester oils corresponding to the formula ROOC--CH.sub.2 CH.sub.2 --(ROOC--CHCH.sub.2).sub.m --C(COOR).sub.2 --(CH.sub.2 CHCOOR).sub.n --CH.sub.2 CH.sub.2 COOR in which the R's represent alkyl groups of 1-30 carbons, each of m and n is zero or a positive integer, and the sum of m and n in the molecules is an average of 0-30. The improved ester oils are particularly valuable for use as lubricants in refrigeration compositions containing fluorohydrocarbon refrigerants.Type: GrantFiled: November 13, 1995Date of Patent: July 15, 1997Assignee: Albemarle CorporationInventor: Mahmood Sabahi