With Compound Having Ether Group Patents (Class 508/182)
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Publication number: 20030073588Abstract: A composition that is or comprises a phosphorus-, perfluoropolyether-, and perfluoroalkyl-containing compound is provided. The compound comprises either (i) mono- or polyalkylene oxide linking groups between the phosphorus and the fluorocarbon group, or (ii) no linking group between the phosphorus and fluorocarbon group, or (iii) individual mixtures of (i) and (ii); and the fluorocarbon group can be the perfluoropolyether or perfluoroalkyl group. The compound can also be a partially esterified phosphate, a partially esterified phosphonate, a salt of a partially esterified phosphate, a salt of a partially esterified phosphonate, or mixtures of two or more thereof.Type: ApplicationFiled: August 6, 2001Publication date: April 17, 2003Inventors: Jon Lee Howell, Erik Williams Perez
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Patent number: 6548454Abstract: The present invention provides a rolling apparatus comprising a movable member which can undergo rotary or linear motion, a support member which carries the movable member, rolling elements which are interposed between the movable member and the support member and which roll with the movement of the movable member, and a lubricant composition which is disposed between the movable member on which the rolling elements roll and the support member, wherein the lubricant composition is a mixture of (1) a thickening agent which is at least one selected from the group consisting of a solid fluoropolymer, a lamellar mineral powder, an ultrafinely particulate organic material, an organic solid lubricant and an ultrafinely particulate inorganic material, and (2) a base oil comprising a liquid fluorinated polymer oil.Type: GrantFiled: August 28, 1998Date of Patent: April 15, 2003Assignee: NSK Ltd.Inventors: Toyohisa Yamamoto, Atsuhiro Yamamoto, Atsushi Yokouchi
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Publication number: 20030069144Abstract: A rolling bearing holding two or more rolling elements 13 between inner ring 10 and outer ring 11 in such a way that these rolling elements can freely roll, and packed with a grease is described, wherein the grease is a mixture of at least one of metal complex soap-based grease and urea-based grease, each incorporated with 8 to 35% by mass of thickening agent, and fluorine-based grease comprising perfluoropolyether oil as a base oil incorporated with 15 to 42.5% by mass of polytetrafluoroethylene as a thickening agent, ratio of said at least one of the metal complex soap-based grease and urea-based grease versus said fluorine-based grease being 40 to 80:60 to 20 by mass, and total content of the thickening agents being 20 to 30% by mass.Type: ApplicationFiled: May 10, 2002Publication date: April 10, 2003Applicant: NSK LTD.Inventor: Kenichi Iso
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Patent number: 6528457Abstract: A composition that can be used as lubricant for high electric field including spark plug boots is disclosed. The composition comprises, or is produced by combining, a halogenated oil such as a perfluoropolyether, a polytrichlorofluoroethylene, a fluorosilicone, or combinations of two or more thereof; a basic thickener; and optionally an additional thickener in which the basic thickener is a metal hydroxide, a metal salt, an ammonium salt, or combinations of two or more thereof. The optional additional thickener is polytetrafluoroethylene, talc, silica, clay, boron nitride, metal soaps, titanium dioxide, polydimethylsiloxane, polyurea, polyurethane, or combinations of two or more thereof. Also provided is a spark plug boot that comprises the composition applied thereto.Type: GrantFiled: June 28, 2001Date of Patent: March 4, 2003Assignee: E. I. du Pont de Nemours and CompanyInventors: Jon L. Howell, H. Carl Walther, Gregory A. Bell
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Publication number: 20030013617Abstract: A composition that can be used as lubricant for high electric field including spark plug boots is disclosed. The composition comprises, or is produced by combining, a halogenated oil such as a perfluoropolyether, a polytrichlorofluoroethylene, a fluorosilicone, or combinations of two or more thereof; a basic thickener; and optionally an additional thickener in which the basic thickener is a metal hydroxide, a metal salt, an ammonium salt, or combinations of two or more thereof. The optional additional thickener is polytetrafluoroethylene, talc, silica, clay, boron nitride, metal soaps, titanium dioxide, polydimethylsiloxane, polyurea, polyurethane, or combinations of two or more thereof. Also provided is a spark plug boot that comprises the composition applied thereto.Type: ApplicationFiled: June 28, 2001Publication date: January 16, 2003Inventors: Jon L. Howell, H. Carl Walther, Gregory A. Bell
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Patent number: 6461998Abstract: Use as lubricants having a low friction coefficient and an improved noise reduction among moving mechanical parts of dispersions comprising a fluorinated oil and a (per)fluoropolymer, said compositions dilutable with water and obtainable by mixing: a) a fluorinated oil having a (per)fluoropolyether structure, b) a concentrated aqueous dispersion of a (per)fluoropolymer (component b′), stabilized by a non ionic and non fluorinated surfactant, c) a fluorinated and/or hydrogenated surfactant, d) water.Type: GrantFiled: March 14, 2001Date of Patent: October 8, 2002Assignee: Ausimont S.p.A.Inventors: Daria Lenti, Gabriella Carignano
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Patent number: 6432887Abstract: The rolling device of the present invention utilizes any one of 1) a lubricant containing a liquid fluorinated polymer oil having a kinetic viscosity at −20° C. falling within a range of between 100 mm2/sec and 3,000 mm2/sec and a vapor pressure at 50° C. not higher than 2×10−4 Torr, 2) a lubricant containing a liquid fluorinated polymer oil having a kinetic viscosity at 40° C. falling within a range of between 10 mm2/sec and 400 mm2/sec and having a kinetic viscosity at 100° C. falling within a range of between 3 mm2/sec and 80 mm2/sec, and 3) a lubricant constituted by a grease composition containing a mixture of a liquid fluorinated polymer oil having a kinetic viscosity at 40° C. falling within a range of between 10 mm2/sec and 400 mm2/sec as a base oil and a thickening agent.Type: GrantFiled: October 4, 2000Date of Patent: August 13, 2002Assignee: NSK Ltd.Inventors: Toyohisa Yamamoto, Kenichi Iso, Atsushi Oda
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Publication number: 20020072477Abstract: A grease composition suitable for use with vehicle electrical equipment and vehicle engine starters is disclosed, which has excellent abrasion resistance and anti-seizure property, long service life, excellent lubricity at low temperatures, and has no adverse effect on electric contacts. The composition contains: (A) a silicon-free synthetic oil having a kinematic viscosity of 10 to 60 mm2/s at 40° C.; (B) a urea thickener; (C) melamine cyanurate; and (D) polytetrafluoroethylene.Type: ApplicationFiled: September 28, 2001Publication date: June 13, 2002Applicant: NIPPON MITSUBISHI OIL CORPORATIONInventors: Syouzou Ikejima, Yasuyuki Wakahara, Hirotugu Kinoshita, Kiyomi Sakamoto
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Patent number: 6358891Abstract: A lubricating/sealing composition is provided according to the present invention and finds particular use as a lubricating medium in internal combustion engines. According to the present invention, the lubricating/sealing composition comprises a base lubricating oil; a plurality of polytetrafluoroethylene particles; a plurality of metal particles; a plurality of molybdenum disulfide particles; an emulsifying agent and a predetermined volume of water. These ingredients are subjected to an elevated temperature, elevated pressure, agitation and shear conditions to produce the composition of the present invention. The composition of the present invention serves not only to provide lubricating properties but also serves as a sealant which seals any areas of the engine which are prone to leaks and the like.Type: GrantFiled: July 20, 2000Date of Patent: March 19, 2002Inventor: Leonard M. Andersen
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Patent number: 6329326Abstract: A rolling bearing has a grease filled therein. The grease contains a perfluoropolyether oil having a straight-chain structure having a dynamic viscosity of from 40 to 160 mm2/s, preferably from 40 to 100 mm2/s, at 40° C. as a base oil and a particulate fluororesin as a base oil, and a particulate polytetrafluoroethylene as a thickening agent.Type: GrantFiled: September 28, 1999Date of Patent: December 11, 2001Assignee: NSK Ltd.Inventors: Kenichi Iso, Atsushi Yokouchi, Hideki Koizumi, Kenji Okuma, Yasuhiro Hirayama
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Publication number: 20010031709Abstract: Use as lubricants having a low friction coefficient and an improved noise reduction among moving mechanical parts of dispersions comprising a fluorinated oil and a (per)fluoropolymer, said compositions dilutable with water and obtainable by mixing:Type: ApplicationFiled: March 14, 2001Publication date: October 18, 2001Inventors: Daria Lenti, Gabriella Carignano
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Patent number: 6288012Abstract: A process for lubrication a container, such as a beverage container, by applying to the container, a substantially non-aqueous lubricant. The process provides many advantages as compared to the use of an aqueous lubricant.Type: GrantFiled: November 17, 1999Date of Patent: September 11, 2001Assignee: Ecolab, Inc.Inventors: Minyu Li, Keith Darrell Lokkesmoe, Guang-Jong Jason Wei
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Patent number: 6211121Abstract: A lubricant contains a fire-resistant water/glycol mixture combined with polytetrafluoroethylene, and is useful in the hydraulic systems of die casting machines, for example. The addition of polytetrafluoroethylene enhances the lubricity of fire-resistant hydraulic fluids thereby reducing the associated equipment maintenance.Type: GrantFiled: December 31, 1998Date of Patent: April 3, 2001Inventor: John Dale Willis
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Patent number: 6025307Abstract: Fluorinated greases comprising (by weight):15%-50% polytetrafluoroethylene or tetrafluoroethylene copolymers with other ethylenically unsaturated monomers;30%-84.5% perfluoropolyether oil having a viscosity comprised between 20 and 4000 cSt at 20.degree. C.;0.5%-10% surfactant or dispersant having perfluoropolyether or perfluoroalkylic chain;0%-10% of an anticorrosion and/or antiwear additive, such that the (per)fluoropolymer particles based on TFE or their aggregates have average sizes lower than the micron and show improved diameter WEAR values.Type: GrantFiled: March 19, 1998Date of Patent: February 15, 2000Assignee: Ausimont S.p.A.Inventors: Alba Chittofrati, Paolo Lazzari, Luca Caluso
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Patent number: 5990054Abstract: A lubricant contains a fire-resistant water/glycol mixture combined with polytetrafluoroethylene, and is useful in the hydraulic systems of die casting machines, for example. The addition of polytetrafluoroethylene enhances the lubricity of fire-resistant hydraulic fluids thereby reducing the associated equipment maintenance. A preferred lubricant is formed by sequentially and homogeneously blending its constituents thereby prolonging the shelf life of the final product.Type: GrantFiled: December 31, 1998Date of Patent: November 23, 1999Inventor: John Dale Willis
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Patent number: 5851635Abstract: A device for transmitting motion comprises a flexible elastomeric element and at least one rigid element in surface contact with one another, wherein the surface of said flexible elastomeric element that comes into surface contact with said rigid element has been surface treated with a halogenated polyether.Type: GrantFiled: July 3, 1995Date of Patent: December 22, 1998Assignee: Dayco PTI, S.p.A.Inventors: Tommaso Di Giacomo, Mauro Piccirilli, Massimo Matricardi
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Patent number: 5839311Abstract: In one aspect, this invention provides a lubricating and colling composition for the forming of metals comprising a hydrofluoroether. In another aspect, the present invention provides a method of forming metals comprising applying to the metal and the workpiece a composition comprising a hydrofluoroether.Type: GrantFiled: September 17, 1996Date of Patent: November 24, 1998Assignee: Minnesota Mining and Manufacturing CompanyInventors: Mark W. Grenfell, Dean S. Milbrath, Daniel D. Krueger, Richard M. Flynn, Frederick E. Behr
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Patent number: 5633089Abstract: There is provided a lubricant which is produced by dissolving a sorbitan ester compound in a solvent such as hexane or toluene. In the sorbitan ester compound, at least one of hydroxyl groups of 1,5-sorbitan is linked by ester linkage to a perfluoro polyether having a terminal carboxyl group and at least an other hydroxyl group is linked by ester linkage to a hydrocarbon having a terminal carboxyl group. There is also provided a thin magnetic metal film type magnetic recording medium or a coated magnetic recording medium in which the above lubricant is held on the surface of a magnetic layer. The lubricant exhibits superior lubricating effects under all conditions and is capable of maintaining the lubricating effects for prolonged time. Consequently, the magnetic recording medium which has the lubricant held on the magnetic layer exhibits superior running durability and resistance against abrasion.Type: GrantFiled: September 22, 1995Date of Patent: May 27, 1997Assignee: Sony CorporationInventor: Hirofumi Kondo