With Organic Non-carboxylic Acid Ester Chalcogen Compound, Nitrogen Compound, Or Halogen Compound Patents (Class 508/493)
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Patent number: 10662389Abstract: A lithium-based thickener is contained in an amount of 6 to 14 wt % based on a total weight of a grease composition. The amount of the lithium-based thickener contained in the grease composition can be reduced by about half compared to a conventional thickener, thus effectively increasing viscosity of base oil and reducing fluidity.Type: GrantFiled: October 16, 2018Date of Patent: May 26, 2020Assignees: Hyundai Motor Company, Kia Motors CorporationInventor: Jae Hyeon Kim
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Publication number: 20140336090Abstract: The invention provides a grease composition which contains (a) a base oil, (b) a thickener, (c) a compound having an alkylthiocarbamoyl group, represented by the formula (1), (d) a hindered phenol antioxidant, and (e) a metal deactivator; wherein R1, R2, R3 and R4 are each independently an alkyl group having 1 to 20 carbon groups, and X represents S, S—S, S—CH2—S, S—CH2CH2—S or S—CH2CH2CH2—S.Type: ApplicationFiled: January 18, 2013Publication date: November 13, 2014Inventors: Osamu Saita, Yuji Onuki, Masamichi Yamamoto
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Publication number: 20140254968Abstract: The present invention provides: a grease composition for rolling bearings which includes a base oil and a diurea compound incorporated therein as a thickener, the base oil including at least one oil selected from trimethylolpropane fatty acid ester oils and pentaerythritol fatty acid esters or a mixed oil which includes the at least one oil and another lubricating oil and having a kinematic viscosity at 40° C. of 19-35 mm2/s and an amount of evaporation through 250-hour holding at 150° C. of 10-15% by mass; and a rolling bearing packed with the grease composition.Type: ApplicationFiled: September 28, 2012Publication date: September 11, 2014Applicant: NSK LTD.Inventors: Kazunori Nakagawa, Yuujiro Toda, Koichi Hachiya
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Patent number: 8299004Abstract: A hydraulic fluid of the present invention contains, as a base oil, an ester having two or more ring structures, the two or more ring structures being at least one selected from an aromatic ring and a saturated naphthenic ring. Particularly, the hydraulic fluid contains an ester having two or more aromatic rings as the base oil. The hydraulic fluid has low energy loss due to compression and exhibits excellent responsiveness when being used in a hydraulic circuit. Consequently, the hydraulic fluid realizes energy-saving, high-speed operation and high precision of control in the hydraulic circuit.Type: GrantFiled: April 21, 2008Date of Patent: October 30, 2012Assignee: Idemitsu Kosan Co., Ltd.Inventor: Toshiyuki Tsubouchi
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Patent number: 8183190Abstract: A biodegradable lubricant composition containing a complex polyol ester having a polyfunctional alcohol residue and a saturated or unsaturated dicarboxylic acid residue having from about 9 to about 22 carbon atoms.Type: GrantFiled: July 29, 2004Date of Patent: May 22, 2012Assignee: Cognis IP Management GmbHInventors: Eugene Zehler, Christopher Costello
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Patent number: 6649574Abstract: A biodegradable lubricating oil composition especially useful as a gear oil employs a synthetic alcohol ester basestock formed from mono- and dipentaerythritol with certain mono- and dicarboxylic acids or dicarboxylic acid anhydrides and an effective amount of a polyoxyalkylene alcohol demulsifying agent, a combination of alkylated organic acid and ashless succinimide rust inhibitors and an ashless dithiocarbamate antiwear and extreme pressure agent.Type: GrantFiled: October 8, 2002Date of Patent: November 18, 2003Assignee: ExxonMobil Research and Engineering CompanyInventors: Angeline Baird Cardis, Susan Ardito
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Publication number: 20030125218Abstract: A biodegradable lubricating oil composition especially useful as a gear oil employs a synthetic alcohol ester basestock formed from mono- and dipentaerythritol with certain mono- and dicarboxylic acids or dicarboxylic acid anhydrides and an effective amount of a polyoxyalkylene alcohol demulsifying agent, a combination of alkylated organic acid and ashless succinimide rust inhibitors and an ashless dithiocarbamate antiwear and extreme pressure agent.Type: ApplicationFiled: October 8, 2002Publication date: July 3, 2003Inventors: Angeline Baird Cardis, Susan Ardito
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Patent number: 6268319Abstract: A slide way lubricant composition includes at least (a) a hydrotreated petroleum having a viscosity of from about 10 cSt to about 250 cSt as measured at 40° C. and consisting predominately of hydrocarbons having from about 15 to about 50 carbon atoms per molecule and (b) a polymeric synthetic ester having an average molecular weight of at least about 200,000. The hydrotreated petroleum may be employed in an amount of from about 97.8 to about 99.4 weight percent and the ester may be employed in the composition in an amount of from about 0.6 to about 2.2 weight percent. The ester may be derived from the reaction between a dicarboxylic acid and a polyhydric alcohol. The composition may further include an adhesion additive having an average molecular weight of at least about 1,000,000 and a high pressure agent, such as a trisulfide. A demulsibility agent may also be employed.Type: GrantFiled: March 28, 2000Date of Patent: July 31, 2001Assignee: General Oil CompanyInventor: Anthony G. Junga
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Patent number: 6258293Abstract: A refrigerating apparatus comprising a refrigeration cycle comprising at least a compressor, a condenser, a dryer, an expansion mechanism and an evaporator, a refrigerant composed mainly of a fluorocarbon type refrigerant containing no chlorine and having a critical temperature of 40° C. or higher, and a refrigerating machine oil comprising as base oil an ester oil of one or more fatty acids which contains at least two ester linkages in the molecule and has a viscosity at 40° C. of 2 to 70 cSt and a viscosity at 100° C. of 1 to 9 cSt.Type: GrantFiled: December 2, 1999Date of Patent: July 10, 2001Assignee: Hitachi, Ltd.Inventors: Tadashi Iizuka, Reishi Naka, Katsumi Fukuda, Makoto Tanaka, Yoshiharu Homma, Hiroaki Hata, Hirokatsu Kousokabe, Koji Nariyoshi, Hiroshi Iwata
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Patent number: 6201053Abstract: Homogeneous partially saponified triglycerides are made consisting essentially of metal salts or fatty acid and mono-, di- and tri-glycerides without the need for a compatibilizing additive. The PSTs are useful as lubricants, antistats, stabilizers, coupling agents, waterproofing agents and neutralizers for polymers. The PSTs are formed in situ by reacting a fat or oil under controlled conditions with a catalyst and at a sufficiently high temperature to achieve a homogeneous composition. The PSTs also have a variety of end-uses other than as polymer additives, for example, as external lubricants, coupling agents, viscosity controllers, thickening agents, surfactants and waterproofing agents.Type: GrantFiled: May 19, 2000Date of Patent: March 13, 2001Assignee: American Ingredients CompanyInventors: Dale J. Dieckmann, Wayne H. Nyberg
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Patent number: 6194502Abstract: Homogeneous partially saponified triglycerides are made consisting essentially of metal salts or fatty acid and mono-, di- and triglycerides without the need for a compatibilizing additive. The PSTs are useful as lubricants, antistats and neutralizers for polymers. The PSTs are formed in situ by reacting a fat or oil under controlled conditions with a catalyst and at a sufficiently high temperature to achieve a homogeneous composition.Type: GrantFiled: March 30, 2000Date of Patent: February 27, 2001Assignee: American Ingredients CompanyInventors: Dale J. Dieckmann, Wayne H. Nyberg
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Patent number: 6127326Abstract: Homogeneous partially saponified triglycerides are made consisting essentially of metal salts or fatty acid and mono-, di- and triglycerides without the need for a compatibilizing additive. The PSTs are useful as lubricants, antistats and neutralizers for polymers. The PSTs are formed in situ by reacting a fat or oil under controlled conditions with a catalyst and at a sufficiently high temperature to achieve a homogeneous composition.Type: GrantFiled: July 31, 1998Date of Patent: October 3, 2000Assignee: American Ingredients CompanyInventors: Dale J. Dieckmann, Wayne H. Nyberg
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Patent number: 5994278Abstract: A lubricating oil comprising an add mixture of the following components: (A) a complex alcohol ester basestock which comprises the reaction product of an add mixture of the following: (1) a polyhydroxyl compound represented by the general formula:R(OH).sub.nwherein R is any aliphatic or cyclo-aliphatic hydrocarbyl group and n is at least 2, provided that the hydrocarbyl group contains from about 2 to 20 carbon atoms; (2) a polybasic acid or an anhydride of a polybasic acid, provided that the ratio of equivalents of the polybasic acid to equivalents of alcohol from the polyhydroxyl compound is in the range between about 1.6:1 to 2:1; and (3) a monohydric alcohol, provided that the ratio of equivalents of the monohydric alcohol to equivalents of the polybasic acid is in the range between about 0.84:1 to 1.2:1; wherein the complex alcohol ester exhibits a viscosity in the range between about 100-700 cSt at 40.degree. C. and having a polybasic acid ester concentration of less than or equal to 70 wt.Type: GrantFiled: February 7, 1997Date of Patent: November 30, 1999Assignee: Exxon Chemical Patents Inc.Inventors: Carolyn Boggus Duncan, David Wayne Turner
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Patent number: 5798322Abstract: A friction-modifying additive composition for a slideway lubricant comprising a mixture of at least one polymeric ester of certain dibasic and monobasic acids with selected organo phosphorus compounds.Type: GrantFiled: August 30, 1996Date of Patent: August 25, 1998Assignee: Gateway Additive CompanyInventors: William Brannen, Aaron Myers, Harish Patel, Philip R. Miller
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Patent number: 5620950Abstract: The objective of the present invention resides in providing a lubricant for refrigerators that reacts rapidly with free acids and contains a stabilizer that has good compatibility with a chlorine-free Flon-thpe coolant such as Flon 134a and the like whose molecules do not contain chlorine. The lubricant for refrigerators employing a chlorine-free Flon-type coolant in accordance with the present invention 100 parts by weight of a synthetic oil and is compounded with 0.05 to 15 parts by weight of an alicyclic epoxy compound having one or more functional groups represented by the following formula: ##STR1## (wherein R.sub.1 and R.sub.2 independently represent a hydrogen or methyl group, and may be the same or different).Type: GrantFiled: August 8, 1995Date of Patent: April 15, 1997Assignee: Asahi Denka Kogyo K.K.Inventors: Tamiji Kamakura, Noriyoshi Tanaka, Kimiyoshi Namiwa, Yukio Tatsumi, Masato Namiki