Additional Chalcogen Bonded Directly To The Carbon Or The Oxy Of The -c(=o) O- Group (i.e., Carbonates, Percarboxylates) Patents (Class 508/462)
  • Patent number: 10781396
    Abstract: Disclosed herein is a mixed composition for a refrigerator, which contains: a refrigerant containing at least one unsaturated fluorinated hydrocarbon compound selected from compounds represented by the following molecular formula (1): CpFrHs, and a refrigerator lubricating oil containing, as a major component, a polyoxyalkylene glycol compound represented by the following general formula (2), and containing an amine compound in an amount of 1.0% by mass or more based on the total amount of the refrigerator lubricating oil: R1—[(OR2)m—OR3]n (2). According to the present disclosure, a mixed composition for a refrigerator can be provided that has a less possibility of autoignition under a high temperature environment even in an unexpected leakage thereof in a refrigerator using a refrigerant containing a slightly flammable refrigerant, and a refrigerator lubricating oil can be provided that is capable of being applied to the mixed composition for a refrigerator.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: September 22, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventor: Masato Kaneko
  • Patent number: 10443015
    Abstract: Disclosed herein is a mixed composition for a refrigerator, which contains: a refrigerant containing at least one unsaturated fluorinated hydrocarbon compound selected from compounds represented by the following molecular formula (1): CpFrHs, and a refrigerator lubricating oil containing, as a major component, a polyoxyalkylene glycol compound represented by the following general formula (2), and containing an amine compound in an amount of 1.0% by mass or more based on the total amount of the refrigerator lubricating oil: R1—[(OR2)m—OR3]n (2). According to the present disclosure, a mixed composition for a refrigerator can be provided that has a less possibility of autoignition under a high temperature environment even in an unexpected leakage thereof in a refrigerator using a refrigerant containing a slightly flammable refrigerant, and a refrigerator lubricating oil can be provided that is capable of being applied to the mixed composition for a refrigerator.
    Type: Grant
    Filed: March 23, 2016
    Date of Patent: October 15, 2019
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventor: Masato Kaneko
  • Patent number: 10377961
    Abstract: A lubricating oil including a lubricating oil base stock as a major component; and a mixture of (i) one or more protected lubricating oil additives having a first performance function, and (ii) one or more unprotected lubricating oil additives having a second performance function, as a minor component. The first performance function and the second performance function are the same. The one or more protected lubricating oil additives are inactive with respect to their performance function. The one or more protected lubricating oil additives are converted into one or more unprotected lubricating oil additives in the lubricating oil in-service in an engine or other mechanical component. A method for controlled release of one or more lubricating oil additives into a lubricating oil. A method for improving oxidative stability of a lubricating oil and extending performance life of one or more lubricating oil additives.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: August 13, 2019
    Assignee: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Man Kit Ng, Anne Marie Shough, Hong Cheng, Joseph R. Pellettiere, Peter Calcavecchio, Shane Deighton
  • Patent number: 9951292
    Abstract: The disclosure includes a grease composition comprising providing at least one polyol-ester base oil, at least one fatty-acid metal soap, at least one dimercaptothiadiazole derivative, and at least one sulfurous fatty-acid ester, the amount of active sulfur provided by the sulfurous fatty-acid ester at 150° C. according to the ASTM D1662 standard being greater than or equal to 0.18 wt % with respect to the total weight of the grease composition.
    Type: Grant
    Filed: December 14, 2012
    Date of Patent: April 24, 2018
    Assignee: Total Marketing Services
    Inventors: Nicole Genet, Xavier Barc
  • Patent number: 9695376
    Abstract: The present disclosure provides a dialkyl carbonate prepared from a methyl branched primary C16-C17 alcohol. The dialkyl carbonate is prepared by transesterifying a reactant dialkyl carbonate with the methyl branched primary C16-C17 alcohol under transesterification reaction conditions. The subsequently produced dialkyl carbonate may be used in various applications, including, but not limited to, in lubricating, cosmetic and textile products and applications.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: July 4, 2017
    Assignee: Huntsman Petrochemical LLC
    Inventor: Haibo Zhao
  • Patent number: 9632300
    Abstract: An image processing apparatus includes an image input unit configured to input a plurality of images acquired by imaging a specimen stained with non-fluorescent dye at a plurality of wavelength bands that are different from one another and a characteristic amount calculation unit configured to calculate a characteristic amount representing auto-fluorescence emitted by the specimen based on the plurality of images.
    Type: Grant
    Filed: May 28, 2014
    Date of Patent: April 25, 2017
    Assignee: OLYMPUS CORPORATION
    Inventor: Yoshioki Kaneko
  • Patent number: 9023775
    Abstract: A lubricating oil composition comprising a Group II basestock and a neutral or overbased metal hydrocarbyl-substituted hydroxybenzoate detergent having a basicity index of less than 2.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: May 5, 2015
    Assignee: Infineum International Limited
    Inventors: Richard D. Bertram, Peter J. Dowding, Peter D. Watts
  • Publication number: 20140227333
    Abstract: Active oxygen compounds, such as equilibrium peroxycarboxylic acid compositions are incorporated within an adsorbed outer layer of hydrophobic particulate component that remains undissolved from the active oxygen component. The dry powder compositions containing the active oxygen compounds provide a stable, controlled release composition having various applications of use. Beneficially, the dry powders delivering active oxygen compounds are low or no odor compositions and do not require the use of personal protective equipment for persons handling the compositions.
    Type: Application
    Filed: February 12, 2013
    Publication date: August 14, 2014
    Applicant: ECOLAB USA INC.
    Inventors: Kim R. Smith, Steven E. Lentsch
  • Publication number: 20140107004
    Abstract: A lubricant composition comprising (a) from 0.1 to 10 percent by weight of one or more polyalkylene glycols (PAG); and (2) one or more ester base oils selected from the group of natural esters, synthetic esters and combinations thereof; wherein the one or more PAG has a molecular weight in the range 1500 to 5000 g/mole, comprises from 10 to 40 percent by weight of units derived from ethylene oxide and from 90 to 60 percent by weight of units derived from propylene oxide; and wherein the one or more PAGs are in the form of block copolymer, reverse block copolymer or combinations thereof is provided. Also provided is a method of enhancing the hydrolytic stability of an ester base oil.
    Type: Application
    Filed: June 8, 2012
    Publication date: April 17, 2014
    Applicant: Dow Global Techologies LLC
    Inventors: Nadjet Khelidj, Martin R. Greaves, Evelyn A. Zaugg-Hoozemans
  • Publication number: 20130274163
    Abstract: It is to provide a lubricating oil composition for a compression refrigerator, which is excellent in the thermal/chemical stability even when used in a compression refrigerator that uses a saturated fluorinated hydrocarbon refrigerant having a lower global warming potential and a fewer carbon atoms, by including in a base oil an organic compound having a double bond in a molecule, which is at least one kind selected from an organic compound having at least two non-conjugated double bonds in the molecule, a terpene compound having a double bond in the molecule, and C12 to C30 aliphatic unsaturated hydrocarbon having one double bond in the molecule.
    Type: Application
    Filed: September 28, 2011
    Publication date: October 17, 2013
    Inventor: Tomoya Matsumoto
  • Publication number: 20130165358
    Abstract: Provided is a comb polyolefin. The comb polyolefin has a copolymer of a multifunctional acrylate monomer and a ?,?-diene monomer terminated with a polyolefin substituent. There is also a process for making a comb polyolefin. There is also a polymer backbone. There is also a polyolefin blend. There is also a lubricant composition including the comb polyolefin.
    Type: Application
    Filed: December 21, 2011
    Publication date: June 27, 2013
    Applicant: ExxonMobil Research and Egineering Company
    Inventors: Yong Yang, Andy Haishung Tsou, Donna Jean Crowther
  • Publication number: 20130123155
    Abstract: A functional fluid comprising a major amount of an oil of lubricating viscosity, and an oil soluble amount of glycerol carbonate or an oil soluble amount of a borated glycerol.
    Type: Application
    Filed: November 15, 2011
    Publication date: May 16, 2013
    Applicant: Chevron Oronite Company LLC
    Inventors: Yue-Rong Li, Frank Plavac, Rawls Frazier
  • Publication number: 20130053289
    Abstract: There is provided a fluid dynamic bearing oil composition for a hard disk drive motor. The fluid dynamic bearing oil composition includes 0.5 to 1.0 parts by weight of a defoaming agent based on 100 parts by weight of the total composition. The bubbles in the fluid dynamic bearing oil may be removed by adding a small amount of defoaming agent to the fluid dynamic bearing oil composition for a hard disk drive motor.
    Type: Application
    Filed: June 7, 2012
    Publication date: February 28, 2013
    Inventors: Hyung Kyu KIM, Sang Hyun Kwon, Ha Yong Jung
  • Patent number: 8324140
    Abstract: The invention relates to a refrigerator oil composition for compression refrigerators with carbon dioxide refrigerant therein, such as car air conditioners, refrigerators, freezers, air conditioners, heat pumps, etc. The base oil of the composition comprises an oxygen-containing organic compound as the essential component and has a kinematic viscosity at 100° C. of from 5 to 50 mm2/sec, a viscosity index of at least 60, and a water content of at most 300 ppm.
    Type: Grant
    Filed: January 25, 2006
    Date of Patent: December 4, 2012
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Toshinori Tazaki
  • Publication number: 20110269656
    Abstract: In accordance with the present invention, it has been discovered that free standing lubricant additive gels can “provide additives to a functional fluid over time, wherein the free standing gel comprises at least two of the following components: a basic component, an acidic component, a polyolefin mixture, and optionally at least one additional additive and wherein these free standing gels have tan delta values of less than 0.330 and cone pen value of less than 75. These free standing gels release at least one desired additive into a functional fluid over time when the gel is contacted with the functional fluid and also can be removed from its forming container while retaining its shape and dimensional integrity, and can be inserted into a delivery device without the need for a containment device.
    Type: Application
    Filed: July 27, 2009
    Publication date: November 3, 2011
    Applicant: THE LUBRIZOL CORPORATION
    Inventors: James D. Burrington, Barbara L. Soukup
  • Patent number: 8012918
    Abstract: An overbased metal hydrocarbyl-substituted hydroxybenzoate detergent having a basicity index of less than 2 and a degree of carbonation of 80% or greater is disclosed. The overbased metal hydrocarbyl-substituted hydroxybenzoate detergent reduces asphaltene precipitation or ‘black paint’ in a marine diesel engine.
    Type: Grant
    Filed: April 10, 2008
    Date of Patent: September 6, 2011
    Assignee: Infineum International Limited
    Inventors: Richard D. Bertram, Peter J. Dowding, Peter D. Watts
  • Publication number: 20100247971
    Abstract: An aspect of the present invention relates to a lubricant composition comprising a polyether compound comprising an alkylene oxide residue and a carbonic acid ester residue.
    Type: Application
    Filed: March 29, 2010
    Publication date: September 30, 2010
    Applicant: FUJIFILM CORPORATION
    Inventors: Kazufumi OMURA, Yasushi KOMORI
  • Publication number: 20100029522
    Abstract: A refrigerator oil composition includes: a synthetic base oil; and a partial hydrocarbyl ether of an aliphatic polyhydric alcohol condensate, in which the aliphatic polyhydric alcohol condensate includes a condensate of 4 to 20 molecules of a hindered glycol and/or an aliphatic polyhydric alcohol having 3 to 6 hydroxyl groups. The refrigerator oil composition is preferably used in a compression refrigerator that uses a hydrofluorocarbon, a natural refrigerant such as a hydrocarbon, carbon dioxide, or ammonia, a mixed refrigerant of fluoroiodomethane and propene, an unsaturated fluorinated hydrocarbon, a fluorinated ether, a fluorinated alcohol, a fluorinated ketone, or a mixture thereof as a refrigerant, has a low coefficient of friction, and is excellent in energy-saving property.
    Type: Application
    Filed: November 5, 2007
    Publication date: February 4, 2010
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Takeo Tokiai, Masato Kaneko, Hiroaki Koshima
  • Publication number: 20090105103
    Abstract: A lubricating oil composition for use in oil-impregnated sintered bearings together with a resin member having C?C bonds or C?O groups in the molecules, which comprises a base oil comprising a synthetic hydrocarbon oil as the main component, and 0.1-30% by weight of an ester-based oil on the basis of total composition, and free from zinc dialkyldithiophosphate and molybdenum dialkyldithiocarbamate, where the synthetic hydrocarbon oil as the main component of the base oil has substantially no adverse effect on resin, can minimize an adverse effect on various metal species of sintered materials by suppressing a mixing amount of a wear inhibitor or an extreme pressure agent to a minimum, without deteriorating a good lubricability required for the lubricating oil in oil-impregnated sintered bearings.
    Type: Application
    Filed: April 18, 2007
    Publication date: April 23, 2009
    Inventors: Miyuki Hashida, Wataru Sawaguchi, Toshio Nitta
  • Publication number: 20090093383
    Abstract: The present invention relates to compositions and methods for improving the melt processing of polymeric materials, and more particularly to the use of compatibilized polymer processing additives to enhance the melt processing of polymeric matrices.
    Type: Application
    Filed: May 9, 2007
    Publication date: April 9, 2009
    Inventor: Jeffrey Jacob Cernohous
  • Publication number: 20080026970
    Abstract: Methods for achieving favorable air release properties, methods for blending a lubricant composition and lubricant compositions are disclosed. In one embodiment, the method comprises the steps of obtaining at least one base stock and at least one thickener, blending the base stock(s) and the thickener wherein the treat rates of the base stock and thickener are chosen to achieve a favorable air release property using a relationship between the thickener, lubricant viscosity, and viscosity of at least one base stock.
    Type: Application
    Filed: July 24, 2007
    Publication date: January 31, 2008
    Inventors: Kelli H. Wright, David G. L. Holt, Angela S. Galiano-Roth, Kevin Buzdygon
  • Patent number: 7256163
    Abstract: The grease composition of the present invention contains, in a lubricant base oil, 0.01 to 10% by mass of a fatty acid salt, 0.01 to 10% by mass of carbonate, 2 to 30% by mass of a thickener, and 0.1 to 20% by mass of a sulfur type extreme-pressure agent on the basis of the total amount of composition.
    Type: Grant
    Filed: November 21, 2002
    Date of Patent: August 14, 2007
    Assignee: Nippon Oil Corporation
    Inventors: Tamio Akada, Akihiko Kominami, Mitsuru Kishimoto, Akira Kohno, Hirotsugu Kinoshita, Souichi Nomura, Takashi Arai, Kiyomi Sakamoto
  • Patent number: 7247606
    Abstract: A compound of formula: wherein each R group independently is C6-C10 arylene group, a straight or branched chain C2-C°alkylene group optionally containing an arylene group, or a C4-C20 straight chain alkylene group containing one or more —NH— groups in the alkylene chain, each X is —O—, —S—, or —NR5— where R5 is hydrogen or C1-C6 alkyl, each AO group is independently ethyleneoxy, 1,2-propyleneoxy, or 1,2-butyleneoxy, n, m and p is from 1 to 50 and the sum of n, m and p is from 4 to 50, and the R4 is independently —CH2-CH(OH)—R9, wherein each R9 independently represents a C4-C18 saturated or unsaturated, substituted or unsubstituted hydrocarbon group. The compound has surfactant and defoaming properties and is useful in latex paint, an ink, an adhesive, or a metal working compositions.
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: July 24, 2007
    Assignee: Cognis Corporation
    Inventors: Stephen F. Gross, Norman Milstein
  • Patent number: 7176167
    Abstract: According to the invention, a self contained vibration resistant bearing is provided. The bearing is coated with a film formed from a rust preventive oil having an extreme-pressure additive content of 0.5 to 10% by weight. Desirably the extreme-pressure additive is an organometallic compound, an organofatty acid compound, organofatty acid derivative, an organophosphoric acid compound or a combination of two(2) or more of such compounds. When a rust preventive film that contains an extreme-pressure additive is formed all over bearing components during the assembling process, the bearing components are fully protected even from sudden vibrations from transportation.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: February 13, 2007
    Inventors: Motoharu Akiyama, Noriyuki Yoshimura
  • Patent number: 7018961
    Abstract: The invention relates to a refrigerator oil composition for compression refrigerators with carbon dioxide refrigerant therein, such as car air conditioners, refrigerators, freezers, air conditioners, heat pumps, etc. The base oil of the composition comprises an oxygen-containing organic compound as the essential component and has a kinematic viscosity at 100° C. of from 5 to 50 mm2/sec, a viscosity index of at least 60, and a water content of at most 300 ppm.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: March 28, 2006
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Toshinori Tazaki
  • Patent number: 6815402
    Abstract: A lubricating oil composition which comprises at least one compound selected from specific cyclic organic phosphorus compounds is disclosed. The lubricating oil composition exhibits excellent extreme pressure property, seizure resistance and wear resistance and is advantageously used as bearing oil, gear oil, hydraulic oil and refrigerator oil.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: November 9, 2004
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Toshinori Tazaki, Hideto Kamimura, Shuichi Sakanoue
  • Publication number: 20040167042
    Abstract: A lubricating oil for refrigerators which comprises a compound having oxygen as a base oil and is miscible with a refrigerant having no chlorine atoms and one carbon atom at a temperature of −10° C. or lower when the lubricating oil is comprised at least in one content within the range of 3 to 50% by weight based on the entire amount of a mixture comprising the lubricating oil and the refrigerant; and a hydraulic fluid composition for refrigerators which comprises a refrigerant having no chlorine atoms and one carbon atom and the lubricating oil described above. The hydraulic fluid composition exhibits excellent miscibility of the lubricating oil with the above refrigerant and, in particular, with difluoromethane and also exhibits excellent antiwear, lubricity and stability.
    Type: Application
    Filed: November 24, 2003
    Publication date: August 26, 2004
    Inventors: Hirotaka Yamazaki, Toshinori Tazaki, Naoko Tazaki, Kenji Mogami
  • Publication number: 20040157753
    Abstract: The present invention proposes a lubricating oil for refrigerators comprising, as the base oil, a polyester-based derivative or a polyvinyl ether derivative and a polycarbonate-based oxygenated compound; a polyoxyalkylene glycol derivative; or a polyester-based derivative or a polyvinyl ether derivative and a polyoxyalkylene glycol derivative. The lubricating oil exhibits excellent miscibility with a refrigerant having one carbon atom and no chlorine atoms and, in particular, with difluoromethane and provides a hydraulic fluid composition exhibiting excellent antiwear, lubricity and stability.
    Type: Application
    Filed: November 24, 2003
    Publication date: August 12, 2004
    Inventors: Toshinori Tazaki, Naoko Tazaki, Kenji Mogami, Hirotaka Yamazaki
  • Patent number: 6759373
    Abstract: The present invention describes a refrigerating oil composition for a carbon dioxide refrigerant comprising a base oil composition which comprises (A) a polyoxyalkylene glycol having a kinematic viscosity of 3 to 50 mm2/s at 100° C. and at least one component selected from (B) a carbonate-based carbonyl derivative having a kinematic viscosity of 3 to 50 mm2/s at 100° C. and (C) a polyol ester having a kinematic viscosity of 3 to 50 mm2/s at 100° C., wherein an amount of (B) and/or (C) is 0.1 to 40% by weight of the total base oil composition. The composition exhibits sufficient antiwear, excellent lubricity and miscibility with carbon dioxide refrigerants and can be used for a long time with stability in the refrigerating cycle using a refrigerant comprising carbon dioxide in the supercritical condition of a high temperature and a high pressure as the main component.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: July 6, 2004
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventor: Toshinori Tazaki
  • Patent number: 6730639
    Abstract: A grease composition for bearings of information devices comprising a carbonate base oil, a lithium soap, and at least one organomolybdenum compound selected from molybdenum dithiophosphates and molybdenum dithiocarbanates.
    Type: Grant
    Filed: July 25, 2000
    Date of Patent: May 4, 2004
    Assignee: Minebea Co., Ltd.
    Inventors: Yasuhiro Miyamoto, Motoharu Akiyama, Seiji Okamura
  • Publication number: 20030220207
    Abstract: According to the invention, a self contained vibration resistant bearing is provided. The bearing is coated with a film formed from a rust preventive oil having an extreme-pressure additive content of 0.5 to 10% by weight. Desirably the extreme-pressure additive is an organometallic compound, an organofatty acid compound, organofatty acid derivative, an organophosphoric acid compound or a combination of two(2) or more of such compounds. When a rust preventive film that contains an extreme-pressure additive is formed all over bearing components during the assembling process, the bearing components are fully protected even from sudden vibrations from transportation.
    Type: Application
    Filed: May 16, 2003
    Publication date: November 27, 2003
    Inventors: Motoharu Akiyama, Noriyuki Yoshimura
  • Patent number: 6638417
    Abstract: 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: Grant
    Filed: December 15, 2000
    Date of Patent: October 28, 2003
    Assignee: Nippon Mitsubishi Oil Corporation
    Inventors: Noboru Ishida, Shinichi Shirahama, Tetsuo Okawa, Shigeki Matsui
  • Publication number: 20030199401
    Abstract: The invention relates to a refrigerator oil composition for compression refrigerators with carbon dioxide refrigerant therein, such as car air conditioners, refrigerators, freezers, air conditioners, heat pumps, etc. The base oil of the composition comprises an oxygen-containing organic compound as the essential component and has a kinematic viscosity at 100° C. of from 5 to 50 mm2/sec, a viscosity index of at least 60, and a water content of at most 300 ppm.
    Type: Application
    Filed: April 4, 2003
    Publication date: October 23, 2003
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: Toshinori Tazaki
  • Publication number: 20030144159
    Abstract: The invention provides a fluorescent grease which enables monitoring of behaviors of the grease for elucidation of the mechanism of grease lubrication, and a rolling element bearing or a condition monitoring rolling element bearing, both charged with the fluorescent grease. The fluorescent grease contains, as its essential components, a base oil, a thickener agent, and a fluorescent substance.
    Type: Application
    Filed: September 26, 2002
    Publication date: July 31, 2003
    Inventors: Motoharu Akiyama, Joichi Sugimura
  • Publication number: 20030139302
    Abstract: The grease composition of the present invention contains, in a lubricant base oil, 0.01 to 10% by mass of a fatty acid salt, 0.01 to 10% by mass of carbonate, 2 to 30% by mass of a thickener, and 0.1 to 20% by mass of a sulfur type extreme-pressure agent on the basis of the total amount of composition.
    Type: Application
    Filed: November 21, 2002
    Publication date: July 24, 2003
    Applicant: NIPPON OIL CORPORATION
    Inventors: Tamio Akada, Akihiko Kominami, Mitsuru Kishimoto, Akira Kohno, Hirotsugu Kinoshita, Souichi Nomura, Takashi Arai, Kiyomi Sakamoto
  • Publication number: 20030013622
    Abstract: A bearing grease composition used under clean atmosphere, as in a bearing of hard disc drive, which has small dust generation (scatter), a long life, excellent acoustic performance and low torque.
    Type: Application
    Filed: July 30, 2002
    Publication date: January 16, 2003
    Applicant: Minebea Co., Ltd.
    Inventors: Yasuhiro Miyamoto, Motoharu Akiyama, Seiji Okamura
  • Patent number: 6500788
    Abstract: An improved lubricating grease composition is herein disclosed, which comprises a base oil and a thickening agent, wherein the base oil comprises 50 to 100% by weight of a carbonate ester compound represented by the following general formula (I): R1O—CO—OR2  (I) wherein R1 and R2 each independently represents a saturated or unsaturated, linear or branched alkyl group having 6 to 30 carbon atoms, on the basis of the total weight of the base oil. The lubricating grease composition shows remarkably improved acoustic life and an improved frictional coefficient, as compared with those observed for conventional grease compositions.
    Type: Grant
    Filed: January 22, 2001
    Date of Patent: December 31, 2002
    Assignees: Kyodo Yushi Co., Ltd., NSK Ltd.
    Inventors: Atushi Shibayama, Hiroshi Kimura, Youichiro Sugimori, Masao Yamamoto
  • Patent number: 6482779
    Abstract: A lubricating grease composition having a basic grease composition containing a synthetic oil as a base oil, and a lithium soap as a thickener. 0.5 to 10% by weight with respect to the basic grease composition total amount of at least one additive selected from the group consisting of an organic molybdenum compound, an organic fatty acid compound or an derivative thereof, and an organic phosphorus compound is added is provided. Accordingly, the present invention can provide a lubricating grease composition capable of providing excellent lubricating characteristics, fretting wear resistance property, and impact resistance property.
    Type: Grant
    Filed: March 21, 2001
    Date of Patent: November 19, 2002
    Assignees: NSK Ltd., Kyodo Yushi Co., Ltd.
    Inventors: Michiharu Naka, Atsushi Yokouchi, Koichi Hachiya, Toru Takamizawa, Jun Kuraishi, Yasunobu Fujita, Hiroshi Kimura, Akimi Kimura, Yuji Onuki
  • Patent number: 6475961
    Abstract: A lubricant composition is provided. The lubricant composition includes a machinery lubricant and an antimicrobially effective amount of an antimicrobial agent. The antimicrobial agent exhibits a partition coefficient between water and the machinery lubricant of between about 0.01 and about 1,000, and the lubricant composition provides at least a two log reduction in bacteria in water in about two weeks or at least a two log reduction in mold and yeast in water in about one month from a concentration of bacteria of between 105 and 106 CFU/ml and a mold and yeast concentration of between about 105 and 106 CFU/ml. Methods for manufacturing and using a lubricant composition are provided. A method for manufacturing a lubricant composition is provided.
    Type: Grant
    Filed: August 23, 2001
    Date of Patent: November 5, 2002
    Assignee: Ecolab Inc.
    Inventors: Keith D. Lokkesmoe, Joel James Schilling, Robert D. P. Hei
  • Publication number: 20020123436
    Abstract: Refrigerating machine oils comprising an ester oil for use with a refrigerant containing carbon dioxide are described. The refrigerating machine oils have excellent lubricity, miscibility with a refrigerant, stability and electric insulation.
    Type: Application
    Filed: February 28, 2002
    Publication date: September 5, 2002
    Applicant: Nippon Mitsubishi Oil Corporation
    Inventors: Tomomasa Osumi, Hiroyuki Hirano, Yasuyuki Watanabe
  • Patent number: 6423126
    Abstract: There is provided an anticorrosive composition for a memory unit bearing so as to control outgas generation which would cause magnetic head crushing or memory error. The anticorrosive composition for a memory unit bearing contains a carbonic ester represented by the following formula: wherein R and R′ are branched alkyl groups of 13 to 15 carbon atoms and may either be the same or different.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: July 23, 2002
    Assignee: Minebea Co., Ltd.
    Inventor: Motoharu Akiyama
  • Publication number: 20020028751
    Abstract: A lubricant composition is provided. The lubricant composition includes a machinery lubricant and an antimicrobially effective amount of an antimicrobial agent. The antimicrobial agent exhibits a partition coefficient between water and the machinery lubricant of between about 0.01 and about 1,000, and the lubricant composition provides at least a two log reduction in bacteria in water in about two weeks or at least a two log reduction in mold and yeast in water in about one month from a concentration of bacteria of between 105 and 106 CFU/ml and a mold and yeast concentration of between about 105 and 106 CFU/ml. Methods for manufacturing and using a lubricant composition are provided. A method for manufacturing a lubricant composition is provided.
    Type: Application
    Filed: August 23, 2001
    Publication date: March 7, 2002
    Applicant: Ecolab Inc.
    Inventors: Keith D. Lokkesmoe, Joel James Schilling, Robert D. P. Hei
  • Publication number: 20020002119
    Abstract: A lubricating grease composition having a basic grease composition containing a synthetic oil as a base oil, and a lithium soap as a thickener. 0.5 to 10% by weight with respect to the basic grease composition total amount of at least one additive selected from the group consisting of an organic molybdenum compound, an organic fatty acid compound or an derivative thereof, and an organic phosphorus compound is added is provided. Accordingly, the present invention can provide a lubricating grease composition capable of providing excellent lubricating characteristics, fretting wear resistance property, and impact resistance property.
    Type: Application
    Filed: March 21, 2001
    Publication date: January 3, 2002
    Inventors: Michiharu Naka, Atsushi Yokouchi, Koichi Hachiya, Toru Takamizawa, Jun Kuraishi, Yasunobu Fujita, Hiroshi Kimura, Akimi Kimura, Yuji Onuki
  • Publication number: 20020002121
    Abstract: The invention provides a fluorescent grease which enables monitoring of behaviors of the grease for elucidation of the mechanism of grease lubrication, and a rolling element bearing or a condition monitoring rolling element bearing, both charged with the fluorescent grease. The fluorescent grease comprises, as its essential components, a base oil, a thickener agent, and a fluorescent substance.
    Type: Application
    Filed: January 5, 2001
    Publication date: January 3, 2002
    Inventors: Motoharu Akiyama, Joichi Sugimura
  • Patent number: 6271182
    Abstract: A rolling device is made up of a plurality of rolling bodies provided between an outer member having a first contact face with each of the plurality of rolling bodies and an inner member having a second contact face with each of the plurality of rolling bodies wherein the plurality of rolling bodies individually are able to roll relative to the first and second faces. A grease composition is sealedly filled in between the outer member and the inner member and contains a carbonate compound serving as a base oil, a lithium soap serving as a thickener, and at least one organomolybdenum compound selected from the group consisting of a molybdenum dithiophosphate and a molybdenum dithiocarbamate.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: August 7, 2001
    Assignee: Minebea Co., Ltd
    Inventor: Motoharu Akiyama
  • Patent number: 6268317
    Abstract: A working fluid which demonstrates a preferable performance even with a small filling amount of the refrigerant of hydrocarbons containing no halogen atom such as ethane, propane, butane, iso-butane and the like into the refrigerating cycle equipment is disclosed. There is also disclosed a refrigerating cycle equipment excellent in the safety against the worst case of the refrigerant leakage, brought by the use of the above-mentioned working fluid. The working fluid comprises the refrigerant of hydrocarbons containing 2 to 4 carbon atoms and no halogen atom, and a lubricating oil for a refrigerator containing, as its main component, an ester compound which is incompatible with the above-mentioned refrigerant.
    Type: Grant
    Filed: October 27, 1998
    Date of Patent: July 31, 2001
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tetsuji Kawakami, Keizo Nakajima, Kiyoshi Sawai, Takayoshi Ueno
  • Patent number: 6265361
    Abstract: A grease composition with which low torque property, low noise property and low volatilization property can be maintained, is provided.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: July 24, 2001
    Assignee: Minebea Co., Ltd.
    Inventors: Motoharu Akiyama, Seiji Okamura, Yasuhiro Miyamoto
  • Patent number: 6261999
    Abstract: A bearing with which low torque property, low noise property and low volatilization property can be maintained, is provided.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: July 17, 2001
    Assignee: Minebea Co., Ltd.
    Inventor: Motoharu Akiyama
  • Patent number: 6258762
    Abstract: A bearing for high efficiency electric motor with which low torque property, low noise property and low volatilization property can be maintained, is provided.
    Type: Grant
    Filed: February 23, 2000
    Date of Patent: July 10, 2001
    Assignee: Minebea Co., Ltd.
    Inventor: Motoharu Akiyama
  • Patent number: 6242393
    Abstract: 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: Grant
    Filed: April 8, 1999
    Date of Patent: June 5, 2001
    Assignee: Nippon Mitsubishi Oil Corporation
    Inventors: Noboru Ishida, Junya Kohno, Shinichi Shirahama, Tetsuo Okawa