Polymer Patents (Class 585/10)
  • Patent number: 10240102
    Abstract: Disclosed herein are oligomerization processes using feedstocks containing 1-hexene to produce an oligomer product, and methods for recovering a heavy 1-hexene oligomer from the oligomer product and hydrogenating the heavy 1-hexene oligomer. The resultant hydrogenated heavy 1-hexene oligomer can be blended with other PAO's to form 100 cSt and 40 cSt lubricant compositions, which have viscosity index and pour point properties that are equivalent to or better than respective 100 cSt and 40 cSt 1-decene PAO's.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: March 26, 2019
    Assignee: Chevron Phillips Chemical Company, LP
    Inventors: Brooke L. Small, Yemi Oyerinde, Russell J. Bak, Jeff C. Gee
  • Patent number: 10151663
    Abstract: A leak detection system for a refrigerant circuit is provided. The refrigerant circuit is sealed and circulates a working fluid having a refrigerant (e.g., flammable refrigerant) and an oil. A reducing tag component is solubilized within the refrigerant. The leak detection system also includes a sensor for detecting the tag component if the refrigerant should leak from the refrigerant circuit. The sensor is highly sensitive to the tag component and thus enhanced detection is enabled. The tag component is stable in the working fluid and does not affect the flammability rating or performance of the refrigerant or oil. The tag component is present at a concentration of from about 50 ppm to about 35,000 ppm in the refrigerant. Methods of detecting leaks from refrigeration systems are also provided.
    Type: Grant
    Filed: September 14, 2016
    Date of Patent: December 11, 2018
    Assignee: Emerson Climate Technologies, Inc.
    Inventor: Marc Joseph Scancarello
  • Patent number: 9745230
    Abstract: Methods for making alpha olefin oligomers and polyalphaolefins include a step of contacting a C4 to C20 alpha olefin monomer and a catalyst system containing a metallocene, a first activator comprising a solid oxide chemically-treated with an electron withdrawing anion, and a second activator comprising an organoaluminum compound. The alpha olefin oligomers and polyalphaolefins prepared with these catalyst systems can have a high viscosity index combined with a low pour point, making them particularly useful in lubricant compositions and as viscosity modifiers.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: August 29, 2017
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Brooke L. Small, Kenneth D. Hope, Qing Yang, Albert P. Masino, Max P. McDaniel, Richard M. Buck, William B. Beaulieu, Eduardo J. Baralt, Eric J. Netemeyer, Bruce Kreischer
  • Patent number: 9023191
    Abstract: A lubricating oil composition for an internal combustion engine contains a component (A) of a polyalphaolefin having a kinematic viscosity at 100 degrees C. of 5.5 mm2/s or less, a CCS viscosity at ?35 degrees C. of 3000 mPA·s or less and a NOACK of 12 mass % or less, and a component (B) of a mineral oil having a viscosity index of 120 or more. The component (A) is contained at a content of 10 mass % or more of a total amount of the composition.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: May 5, 2015
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuhiro Teshima, Motoharu Ishikawa
  • Patent number: 9023190
    Abstract: A lubricating oil composition for an internal combustion engine contains: a base oil including a component (A) of a polyalphaolefin having a kinematic viscosity at 100 degrees C. of 5.5 mm2/s or less, a CCS viscosity at ?35 degrees C. of 3000 mPa·s or less and a NOACK of 12 mass % or less and a component (B) of a mineral oil having a viscosity index of 120 or more; and polyisobutylene having a mass average molecular weight of 500,000 or more. A content of the composition (A) is 25 mass % or more of a total amount of a lubricating oil.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: May 5, 2015
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuhiro Teshima, Motoharu Ishikawa
  • Patent number: 8992762
    Abstract: A lubricating oil composition for an internal combustion engine contains: a base oil including a component (A) of a polyalphaolefin having a kinematic viscosity at 100 degrees C. of 5.5 mm2/s or less, a CCS viscosity at ?35 degrees C. of 3000 mPa·s or less and a NOACK of 12 mass % or less and a component (B) of a mineral oil having a viscosity index of 120 or more; and polyisobutylene having a mass average molecular weight of 500,000 or more. A content of the composition (A) is 25 mass % or more of a total amount of a lubricating oil.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: March 31, 2015
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuhiro Teshima, Motoharu Ishikawa
  • Patent number: 8992763
    Abstract: A lubricating oil composition for an internal combustion engine contains a component (A) of a polyalphaolefin having a kinematic viscosity at 100 degrees C. of 5.5 mm2/s or less, a CCS viscosity at ?35 degrees C. of 3000 mPA·s or less and a NOACK of 12 mass % or less, and a component (B) of a mineral oil having a viscosity index of 120 or more. The component (A) is contained at a content of 10 mass % or more of a total amount of the composition.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: March 31, 2015
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Kazuhiro Teshima, Motoharu Ishikawa
  • Publication number: 20150011807
    Abstract: A highly efficient method for the conversion of a natural product into the high density fuel RJ-4 with concomitant evolution of isobutylene for conversion to fuels and polymers, more specifically, embodiments of the invention relate to efficient methods for the conversion of the renewable, linear terpene alcohol, linalool into a drop-in, high density fuel suitable for ramjet or missile propulsion.
    Type: Application
    Filed: September 5, 2012
    Publication date: January 8, 2015
    Inventors: Benjamin G. Harvey, Heather A. Meylemans, Roxanne L. Quintana
  • Patent number: 8846991
    Abstract: The subject invention pertains to homogeneous liquid low molecular weight ethylene/alpha-olefin polymers having a number average molecular weight (Mn) as determined by gel permeation chromatography, of less than 25,000, a total crystallinity, as measured by DSC, of less than 10%, and a pour point, as measured by ASTM D97, of less than 50° C. The subject invention also pertains to homogeneous gel-like low molecular weight ethylene/alpha-olefin polymers having a number average molecular weight (Mn) as determined by gel permeation chromatography, of less than 25,000, a total crystallinity, as measured by DSC, of less than 50%, and a pour point, as measured by ASTM D97, of less than 90° C.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: September 30, 2014
    Assignee: Dow Global Technologies LLC
    Inventors: Teresa P. Karjala, Selim Yalvac, Thomas Karjala, Daniel D. VanderLende, Brian W. Kolthammer, James C. Stevens, Charles F. Diehl
  • Patent number: 8795112
    Abstract: An oil-free chain is constructed by alternately connecting a pair of outer link plates connected using pins and a pair of inner link plates connected using oil-impregnated bushings into which the adjacent pins of the outer link plates adjacent to the inner link plates are fitted. The oil-impregnated bushings are impregnated with a lubricant having a kinematic viscosity in the range of ISO-VG grade 46 to 460, the weight % of an ingredient having the highest content among the elution ingredients obtained by the GPC method is 95 wt % or more, Mn is 800 or more and 2300 or less, and the ratio of Mw to Mn is 1.0 or more and 1.3 or less. Oil film breakage at the sliding portions of the bushings is suppressed from occurring and the oil film strength is high such that an oil-free chain has a sufficiently long abrasion elongation-resistant life.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: August 5, 2014
    Assignee: Tsubakimoto Chain Co.
    Inventor: Koji Tanaka
  • Patent number: 8642523
    Abstract: The present invention is directed to a method for improving the fuel efficiency of engine oil compositions by reducing the traction coefficient of the oil by formulating the oil using a blend of one or more first base stock(s) selected from Group II base stock, Group III base stock and Group IV base stock and a second base stock selected from polyisobutylene (PIB) and, preferably, additized with a detergent.
    Type: Grant
    Filed: January 28, 2011
    Date of Patent: February 4, 2014
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Kevin L. Crouthamel, Vincent M. Carey
  • Patent number: 8642524
    Abstract: The present invention is directed to a method for controlling soot induced viscosity increase in diesel engines, by using as the diesel engine lubricant an oil formulation comprising a base oil containing about 10 to 80 wt % GTL base stock and/or base oil and/or hydrodewaxed or hydroisomerized/catalytic (or solvent) dewaxed base stock and/or base oil in combination with 20 to 90 wt % conventional Group I petroleum derived base oil, said base oil being further combined with a polymeric viscosity modifier, and to the lubricating oil which effects such control over soot induced viscosity increase.
    Type: Grant
    Filed: October 11, 2012
    Date of Patent: February 4, 2014
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Heather M. Haigh, Brandon Thomas Weldon, Jason Zhisheng Gao
  • Publication number: 20130340325
    Abstract: Fouling components within a fluid may be prevented from accumulating when an additive contacts the fluid, e.g. by coating the wellbore with the additive prior to the production of the fluid or adding the additive directly to a produced fluid, etc. The additive may include, but is not limited to, a block copolymer having at least two components. The first component may be a charged monomer, and the second component may be a long chain fatty alcohol acrylate monomer. In one alternative embodiment, the fluid may be a hydrocarbon fluid, and the fouling components may be or include, but are not limited to wax, paraffins, asphaltene, resins, and combinations thereof.
    Type: Application
    Filed: June 17, 2013
    Publication date: December 26, 2013
    Inventor: Richard Duffy
  • Patent number: 8546306
    Abstract: The invention relates to an aqueous dispersion comprising microcapsules, the capsule wall of which is formed from radically polymerized monomers and the capsule core of which comprises at least one oil, in which the capsule core comprises at least one lipophilic surfactant and the continuous phase of the dispersion comprises at least one agrochemical. In addition, the invention relates to a process for the preparation of an aqueous dispersion by (i) providing an aqueous dispersion comprising microcapsules, the capsule wall of which is formed from radically polymerized monomers and the capsule core of which comprises at least one oil and at least one lipophilic surfactant (microcapsule crude dispersion), and (ii) mixing with at least one agrochemical.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: October 1, 2013
    Assignee: BASF SE
    Inventors: Tatjana Levy, Marc Rudolf Jung, Rainer Berghaus, Hans-Peter Hentze, Tobias Joachim Koplin, Jurith Montag, Anke Reinold, Christian Sowa
  • Publication number: 20130239465
    Abstract: The cold flow of middle distillate fuels may be improved by adding an effective improving amount of one or more alpha-olefin compositions. The compositions include, but are not necessarily limited to, polymers of alpha-olefins per se, copolymerized or grafted alpha-olefins with maleic anhydride, acrylic acid, vinyl acetate, alkyl acrylates, methacrylic acid, and/or alkyl methacrylates. These resulting copolymers or grafted polymers may be blended with alkylphenol-formaldehyde resins, which in turn may be blended with ethylene-vinyl acetate (EVA) copolymer. In a non-limiting example, the cold filter plugging point (CFPP) may be synergistically improved as compared with the expected additive effect of using the components separately.
    Type: Application
    Filed: March 6, 2013
    Publication date: September 19, 2013
    Applicant: Baker Hughes Incorporated
    Inventors: Ben Morgan, John A. Schield, Paul J. Biggerstaff, Kimchi T. Phan, Jack Bradford Ward
  • Patent number: 8530712
    Abstract: This disclosure relates to a liquid syndiotactic polyalphaolefin, sPAO, comprising one or more C4 to C24 monomers, said sPAO having: a) an rr triad content of 5 to 50% as measured by 13C NMR; b) an mr triad content of 25 to 60% as measured by 13C NMR, where the mr to mm triad ratio is at least 1.0; c) a pour point of Z ° C. or less, where Z=0.0648X?51.2, where X=kinematic viscosity at 100° C. as reported in centistokes (cSt); d) a kinematic viscosity at 100° C. of 100 cSt or more (alternatively 200 cSt or more); e) a ratio of mr triads to rr triad (as determined by 13C NMR) of less than 9; f) a ratio of vinylidene to 1,2-disubstituted olefins (as determined by 1H NMR) of less than 8; g) a viscosity index of 120 or more; and h) an Mn of 40,000 or less. This disclosure further relates to processes to make and use sPAOs, including those having any combination of characteristics a) to h).
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: September 10, 2013
    Assignee: Exxonmobil Chemical Patents Inc.
    Inventors: Margaret M. Wu, Steven P. Rucker, Jo Ann M. Canich
  • Publication number: 20130143782
    Abstract: Lubricating oil compositions, formulated to a preselected viscosity grade that demonstrate stay-in-grade capability in a diesel injector shear stability test, are provided. The compositions comprise a major amount of a base oil of lubricating viscosity and a minor amount of (i) a viscosity modifier (VM) or mixtures thereof having a low shear stability index (SSI) and (ii) a VM or mixtures thereof having an SSI greater than that of the VM from (i).
    Type: Application
    Filed: October 31, 2012
    Publication date: June 6, 2013
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventor: EXXONMOBIL RESEARCH AND ENGINEERING
  • Patent number: 8425630
    Abstract: The invention includes a method of improving the combustion efficiency of a fuel-burning device. The method includes the steps of adding a low molecular weight polymer to the fuel of the fuel-burning device and burning the fuel with the polymer in the fuel-burning device. The invention also includes fuel compositions containing such polymers.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: April 23, 2013
    Assignee: Himmelsbach Holdings, LLC
    Inventors: Paul F. Waters, John B. Waters
  • Patent number: 8426659
    Abstract: This invention relates to higher olefin vinyl terminated polymers having an Mn of at least 200 g/mol (measured by 1H NMR) including of one or more C4 to C40 higher olefin derived units, where the higher olefin vinyl terminated polymer comprises substantially no propylene derived units; and wherein the higher olefin polymer has at least 5% allyl chain ends and processes for the production thereof. These vinyl terminated higher olefin polymers may optionally include ethylene derived units.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: April 23, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Charles J. Ruff, Donna J. Crowther, John R. Hagadorn, Patrick Brant
  • Patent number: 8415284
    Abstract: A lubricating oil composition and methods of operating an internal combustion engine to provide improved engine operation. The lubricating composition includes a major amount of oil of lubricating viscosity and a minor amount of at least one olefin copolymer having a number average molecular weight greater than about 10,000 up to about 300,000. The olefin copolymer is grafted with (A) a vinyl-substituted aromatic compound, and (B) a compound selected from the group consisting of a C5-C30 olefin, a polyalkylene compound, and mixtures thereof. A mole ratio of A/B in the reaction mixture ranges from about 0.25:1 to about 5:1. The lubricating composition optionally includes a minor amount of at least one non-grafted olefin copolymer, styrene-isoprene copolymer, methacrylate copolymer, or styrene butadiene copolymer have number average molecular weight greater than about 50,000 up to about 300,000.
    Type: Grant
    Filed: November 5, 2009
    Date of Patent: April 9, 2013
    Assignee: Afton Chemical Corporation
    Inventor: Akhilesh Duggal
  • Patent number: 8399724
    Abstract: This invention relates to a vinyl terminated higher olefin copolymer having an Mn of 300 g/mol or more (measured by 1H NMR) comprising: (i) from about 20 to about 99.9 mol % of at least one C5 to C40 higher olefin monomer; and (ii) from about 0.1 to about 80 mol % of propylene; wherein the higher olefin copolymer has at least 40% allyl chain ends. The copolymer may also have an isobutyl chain end to allyl chain end ratio of less than 0.7:1 and/or an allyl chain end to vinylidene chain end ratio of greater than 2:1.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: March 19, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna J. Crowther, Matthew W. Holtcamp, John R. Hagadorn, Charles J. Ruff, George Rodriguez, Patrick Brant
  • Patent number: 8399390
    Abstract: The invention relates to industrial lubricant and grease compositions containing high viscosity index polyalphaolefins (HVI-PAO). The use of HVI-PAOs in industrial oils and greases application provides advantages in improved shear stability, wear property, foam property, energy efficiency and improved overall performance.
    Type: Grant
    Filed: June 29, 2005
    Date of Patent: March 19, 2013
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret May-Som Wu, Andrew Jackson, Walter David Vann, James Thomas Carey, Norman Yang, Suzzy Chen Hsi Ho
  • Patent number: 8389780
    Abstract: The invention is directed to polyalphaolefins (PAOs) and processes for forming PAOs. In one embodiment, the invention is to a process for forming a PAO comprising polymerizing C8-C12 ?-olefin monomers in the presence of hydrogen, a C8-C12 saturated hydrocarbon, e.g., a C8-C12 saturated straight-chain hydrocarbon, and a catalyst system in a reaction vessel, wherein the C8-C12 saturated straight-chain hydrocarbon has about the same number of carbon atoms as the C8-C12 ?-olefin monomers. The C8-C12 saturated straight-chain hydrocarbon optionally is derived from a crude PAO product formed by the process of the invention. The invention is also directed to reaction systems for performing the processes of the invention, to processes for controlling PAO viscosity based on residence time, and to the removal of spent catalyst using a solid adsorbent particles.
    Type: Grant
    Filed: December 17, 2010
    Date of Patent: March 5, 2013
    Assignee: Chemtura Corporation
    Inventors: Daniel C. Knowles, Jesus R. Fabian, Vilan Kosover, Susan Ferrarotti, E. Brian Fox, Frank DeBlase
  • Patent number: 8318846
    Abstract: An object of the present invention is to provide an olefin-based thermoplastic elastomer composition that has both weatherability and flexibility at low temperatures, is excellent in fluidity, and causes no stickiness even in the use at high temperatures; a process oil composition for elastomers that serves as the raw material of the thermoplastic elastomer composition and contributes to the above characteristics; and an oil-extended elastomer containing the process oil composition. The process oil composition for elastomers of the present invention has a property that, when 20 parts by weight of the process oil composition for elastomers are blended with respect to 100 parts by weight of a propylene homopolymer, the melting point of the propylene homopolymer is lowered by 2 to 4.5° C. compared to that of the propylene homopolymer without blending.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: November 27, 2012
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Yuichi Ito, Hidenari Nakahama, Kotaro Ichino
  • Publication number: 20120165580
    Abstract: A method for preparing a liquid polyolefin which includes contacting a feedstock comprising at least one olefin monomer with a catalyst system to produce a reactor effluent stream, filtering the reactor effluent stream, washing a created filter cake with a warm wash fluid comprising at least one hydrocarbon liquid, separating at least a portion of the wash fluid during the washing, sending said portion of the wash fluid through a distillation process, and recovering at least a portion of the liquid polyolefin that was in the filter cake. The catalyst system may be any conventional polyolefin catalyst system and, in any preferred embodiment of the invention, the catalyst system contains at least one activated metallocene catalyst. The reactor effluent stream comprises at least one liquid polyolefin, residual catalyst, and unreacted olefin monomer.
    Type: Application
    Filed: January 17, 2012
    Publication date: June 28, 2012
    Inventors: Kenneth A. Bahler, Aaron L. Wetterlind, Patrick R. Ford, Derrick L. Laton
  • Patent number: 8193135
    Abstract: Process for the preparation of viscosity index improver (V.I.I.) additives of lubricating oils which comprises a mixing treatment under high shear conditions of a composition comprising: (i) one or more EP(D)M polymers (ii) one or more polyvinylarene/conjugated hydrogenated polydiene/polyvinylarene block copolymers; and (iii) lubricating oil, (ii) being present in a concentration of 1.5 to 20% by weight whereas (iii) is present in a concentration ranging from 1.5 to 45% by weight.
    Type: Grant
    Filed: February 12, 2007
    Date of Patent: June 5, 2012
    Assignee: Polimeri Europa S.p.A.
    Inventor: Tiziano Tanaglia
  • Patent number: 8105992
    Abstract: The invention relates to viscosity modifier polymers, concentrate and lubricant formulations utilizing a diblock polymer having one block A and one block B, block A contributing from 15 to 30% of the total chain length and block B from 70 to 85% of the total chain length, wherein block A comprises at least 93 wt % of ethylene and at least one other alpha-olefin and block B comprises an ethylene content between 40 and 75 wt % and at least one other alpha-olefin and wherein the resulting block copolymer has an average ethylene content of between about 60 wt % to 80 wt % ethylene, a fast Gaussian NMR relaxation signal between 17 and 22% and a slow exponential NMR relaxation signal between 58 and 68% of the total NMR relaxation signal, a SSI of at least 35% and a TE of at least 3.5 in order to obtain improvements in fuel economy.
    Type: Grant
    Filed: May 7, 2007
    Date of Patent: January 31, 2012
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jean-Roch Schauder, Kirk Alan Nass, Periagaram Srinivasan Ravishankar, Karine Vincent
  • Publication number: 20110137091
    Abstract: In oligomerizing alpha-olefins to produce poly alpha-olefins, the feedstock consists of nonene, or a blend of alpha-olefins comprising nonene. The nonene comprising alpha-olefin feedstock and at least one catalyst are subjected to oligomerization or polymerization conditions in a reactor. Following reaction, the mixture may be subjected to distillations to removed unreacted alpha-olefins and dimers of the alpha-olefins. The resulting product may also be hydrogenated. The final product may also be fractioned to recover at least two fractions of poly alpha-olefins of differing nominal viscosities.
    Type: Application
    Filed: November 8, 2010
    Publication date: June 9, 2011
    Inventors: Norman Yang, Phillip T. Matsunaga, Maria C.B. Goze
  • Patent number: 7884256
    Abstract: Higher diamondoid derivatives capable of taking part in polymerization reactions are disclosed as well as intermediates to these derivatives, polymers formed from these derivatives and methods for preparing the polymers.
    Type: Grant
    Filed: December 17, 2004
    Date of Patent: February 8, 2011
    Assignee: Chevron U.S.A. Inc.
    Inventors: Shenggao Liu, Robert M. Carlson, Jeremy E. Dahl
  • Patent number: 7851422
    Abstract: A quenching oil for reduced pressure quenching which comprises a base oil having a kinematic viscosity at 40° C. of 40 mm2/s or more and a vapor blanket breaking agent; and a method for quenching wherein the quenching oil is used and quenching is carried out while adjusting the pressure on the surface of the oil. The method allows the achievement of cooling characteristics over a wide range from those conventionally achieved by a cold oil to those by a hot oil, by the use of a single quenching oil.
    Type: Grant
    Filed: March 9, 2005
    Date of Patent: December 14, 2010
    Assignee: Idemitsu Kosan Co., Ltd.
    Inventors: Katsumi Ichitani, Makoto Takeishi
  • Publication number: 20100286457
    Abstract: A gear oil composition is provided. The composition comprises a synergistic blend of mineral oil base stock and polyalphaolefin (PAO) base stock for the oil composition to have a traction coefficient at a slide to roll ratio of 40 percent at 15 mm2/s. of 0.030 or less and a pressure viscosity coefficient of at least 16.0 at 80° C., 20 Newton load, and 1.1 m/s rolling speed. In one embodiment, the synergistic amount of PAO base stock ranges from 5 to 48 wt. % based on the total weight of the gear oil composition.
    Type: Application
    Filed: June 23, 2010
    Publication date: November 11, 2010
    Inventors: Allan G. Hee, Trevor Miller
  • Patent number: 7795365
    Abstract: The subject invention pertains to homogeneous liquid low molecular weight ethylene/alpha-olefin polymers having a number average molecular weight (Mn) as determined by gel permeation chromatography, of less than 25,000, a total crystallinity, as measured by DSC, of less than 10%, and a pour point, as measured by ASTM D97, of less than 50° C. The subject invention also pertains to homogeneous gel-like low molecular weight ethylene/alpha-olefin polymers having a number average molecular weight (Mn) as determined by gel permeation chromatography, of less than 25,000, a total crystallinity, as measured by DSC, of less than 50%, and a pour point, as measured by ASTM D97, of less than 90° C.
    Type: Grant
    Filed: October 1, 2003
    Date of Patent: September 14, 2010
    Assignee: Dow Global Technologies Inc.
    Inventors: Teresa P. Karjala, Selim Yalvac, Thomas Karjala, Daniel D. Vanderlende, Brian W. Kolthammer, James C. Stevens, Charles F. Diehl
  • Patent number: 7741256
    Abstract: A lubricant composition contains poly-?-olefin oil having a kinematic viscosity of 1500 to 13000 mm 2/s (40° C.) as a base oil and from 45 to 50% by weight of a thickener composed of polytetrafluoroethylene. The lubricant composition may be used for lubricating an expandable shaft having a pair of shaft members filled with the lubricant composition to prevent stick-slip from occurring when a high surface pressure is applied thereto, thereby allowing consistent maintenance of good lubricating performance. Such an expandable shaft may be incorporated advantageously into a steering system as an intermediate shaft into an area between a steering shaft and a rack-and-pinion mechanism.
    Type: Grant
    Filed: March 8, 2007
    Date of Patent: June 22, 2010
    Assignee: JTEKT Corporation
    Inventors: Fumiaki Kasahara, Satoshi Kakutani, Kazuto Minagawa
  • Publication number: 20100062954
    Abstract: The invention provides a transmission fluid composition which has a kinematic viscosity as determined at 100° C. of 2 to 10 mm2/s and a viscosity index of 150 or higher and which satisfies a relationship between kinematic viscosity and NOACK evaporation loss amount represented by formula (I): X/3+Y?6.33??(I) (wherein X represents a kinematic viscosity (mm2/s) as determined at 100° C., and Y represents a NOACK evaporation loss amount (mass %) at 200° C. for one hour), and a transmission fluid composition containing, as a base oil, at least one species selected from among ?-olefin oligomers produced through oligomerization of an ?-olefin through a specific method and hydrogenation products of the oligomers. Such transmission fluid compositions exhibit a very small evaporation loss despite having low viscosity, and a long metal fatigue life (e.g.
    Type: Application
    Filed: November 15, 2006
    Publication date: March 11, 2010
    Applicant: Idemitsu Kosan Co., Ltd
    Inventor: Hiroshi FUJITA
  • Patent number: 7345017
    Abstract: An amphiphilic functional substance with lipophilicity, affinity for supercritical CO2, and if necessary hydrophilicity comprising an oligoolefin chain and a perfluoroalkyl group(s) at a single end thereof or at both ends thereof with or without the intervention of a poly(oxyalkylene) chain, which enables the utilization of supercritical CO2 as a reaction medium; a photopolymerizable functional substance comprising an oligoolefin chain and a reversible photopolymerization/dissociation group(s) at a single end thereof or at both ends thereof and a functional substance comprising a photo- and/or thermodissociable polymer obtained by photopolymerization of the aforementioned photopolymerizable functional substance, which can be utilized as recycle polymers; a hydrolyzable functional substance comprising a polymer obtained by chain-elongating plural oligoolefin chains through ester linkages, which can be utilized as a recycle polymer; and a functional substance capable of forming a microphase separation structure
    Type: Grant
    Filed: January 18, 2007
    Date of Patent: March 18, 2008
    Assignee: San-El Kougyou Corporation
    Inventor: Takashi Sawaguchi
  • Patent number: 7342143
    Abstract: A method for the processing of a polyalphaolefin feedstock having a concentration of organic halide to thereby yield a polyalphaolefin end-product having a low concentration of organic halide. The method includes a hydrogenation step whereby the polyalphaolefin feedstock is contacted under suitable reaction conditions with a specific hydrogenation catalyst composition that is resistant to halide deactivation. The hydrogenation catalyst comprises a noble metal on a support material comprising silica and alumina. The hydrogenated polyalphaolefin feedstock is further processed to remove the hydrogen halide produced during the hydrogenation step to yield the polyalphaolefin end-product.
    Type: Grant
    Filed: September 9, 2004
    Date of Patent: March 11, 2008
    Assignee: Shell Oil Company
    Inventors: Peter Birke, Kristi Ann Morris, Hans-Dieter Neubauer, Rainer Schoedel
  • Patent number: 7163913
    Abstract: A polymer suitable for use as a viscosity index improver for lubricating oil compositions, which is at least one, at least partially hydrogenated linear or star-shaped random copolymer of isoprene and butadiene, in which at least 70 wt. % of the butadiene is incorporated into the polymer as 1,4 units and the weight ratio of isoprene addition product to butadiene addition product in the copolymer is in a range of from about 90:10 to about 70:30.
    Type: Grant
    Filed: July 1, 2003
    Date of Patent: January 16, 2007
    Assignee: Infineum International Limited
    Inventors: Stuart Briggs, Chin Chu
  • Patent number: 7129197
    Abstract: One or more oligomers of an olefin are prepared in the presence of a single-site catalyst. Preferably, the olefin is an ?-olefin, and the oligomers are a poly-alpha-olefin (PAO). The PAO so prepared is completely or substantially free of tertiary hydrogen resulting from isomerization. Consequently, the PAO possesses improved biodegradability, improved oxidation resistance, and/or a relatively higher viscosity index. The PAO has many useful applications, such as a component of a lubricant.
    Type: Grant
    Filed: August 29, 2002
    Date of Patent: October 31, 2006
    Assignee: Shell Oil Company
    Inventors: Wei Song, William J. Heilman
  • Patent number: 7018962
    Abstract: A viscosity index (VI) improver concentrate containing at least one VI improver, from 0 to about 5 mass % of lubricating oil flow improver (LOFI) and diluent oil, wherein the diluent oil has a kv100 of at least about 3.0 cSt and a CCS at ?35° C. of less than 3700 cPs, and wherein at least about 98 mass % of the concentrate is composed of VI improver, LOFI and diluent oil.
    Type: Grant
    Filed: June 12, 2003
    Date of Patent: March 28, 2006
    Assignee: Infineum International Limited
    Inventors: Ricardo A. Bloch, Jai G. Bansal, Dean B. Clarke
  • Patent number: 7015255
    Abstract: (a) A medium oil wherein a main component is a hydrocarbon, and the number of paraffinic carbon atoms is 70% or more with respect to a total number of carbon atoms, (b) a medium oil wherein a main component is a polybutene, (c) a medium oil wherein a main component is a mixture of hydrocarbons of the formula (1): CH3—C(CH3)2—[—CH2—C(CH3)2—]n—CH2—R ??(1) wherein R is —CH(CH3)2 or —C(CH3)?CH2, and n is 1 to 10, (d) a medium oil wherein a main component is a hydrocarbon prepared by a Fischer-Tropsch synthesis, or (e) a medium oil wherein a main component is a branched paraffinic hydrocarbon prepared by hydrogenolysis of a hydrocarbon prepared by a Fischer-Tropsch synthesis, and a process of producing dimethyl ether using the medium oil, are disclosed.
    Type: Grant
    Filed: February 29, 2000
    Date of Patent: March 21, 2006
    Assignee: JFE Holdings, Inc.
    Inventors: Keiji Tomura, Takashi Ogawa, Masami Ono, Keiichi Okuyama, Seiji Aoki, Tsutomu Shikada, Masatsugu Mizuguchi, Yotaro Ohno
  • Patent number: 7012046
    Abstract: A composition including a polyalphaolefin and at least one alfol alcohol that function as drag reducing agent slurries and a process for the preparation of the drag reducing agent slurries are disclosed. The process includes contacting alpha olefin monomers with a catalyst in a reactant mixture to form a polyalphaolefin. The polyalphaolefin is combined with at least one alfol alcohol to form a drag reducing agent slurry. A process for reducing drag in a conduit is also disclosed.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: March 14, 2006
    Inventors: Gerald B. Eaton, Alan K. Ebert
  • Patent number: 6992049
    Abstract: The present invention provides a viscosity index improving lubricant additive which comprises an olefinic oligomer of about 2,000 to about 20,000 number average molecular weight having a viscosity of 75 to about 3,000 cSt at 100° C. and a hydrocarbyl aromatic which contains at least about 5% of its weight from aromatic moieties having a viscosity of about 3 to about 50 cSt at 100° C. where the weight ratio of hydrocarbyl aromatic component to olefin oligomer is from about 1:2 to about 50:1. In another aspect, the invention provides for a lubricating oil composition comprising a base oil and the instant viscosity index improving additive.
    Type: Grant
    Filed: January 28, 2003
    Date of Patent: January 31, 2006
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Douglas E. Deckman, William L. Maxwell, William H. Buck, Mark D. Winemiller, David J. Baillargeon
  • Patent number: 6989357
    Abstract: A composition including an alcohol absorbed polyalphaolefin that functions as a drag reducing agent and a process for the preparation of the drag reducing agent are disclosed. The process includes the steps of contacting alpha olefin monomers with at least one catalyst in a reactant mixture to form a polyalphaolefin. The polyalphaolefin is then contacted with at least one water insoluble alcohol for a period of time to provide an alcohol absorbed polyalphaolefin that is used as an improved drag reducing agent. Processes for reducing drag in a conduit are also disclosed.
    Type: Grant
    Filed: April 16, 2004
    Date of Patent: January 24, 2006
    Inventors: Gerald B. Eaton, Alan K. Ebert
  • Patent number: 6969744
    Abstract: Disclosed is a method of preparing terminally functionalized telechelic polymers using a cationic living polymer product or a terminal tert-chloride chain end of a carbocationic quasiliving polymer product, which comprises quenching the polymer product with an N-substituted pyrrole to thereby functionalize the N-substituted pyrrole at the terminal reactive polymer chain end(s). Also disclosed are the terminal functionalized polyisobuyl N-substituted pyrrole compounds where the polyisobutyl group is substituted at the 2 and 3 position of the N-substituted pyrrole.
    Type: Grant
    Filed: June 19, 2003
    Date of Patent: November 29, 2005
    Assignees: University of Southern Mississippi, Chevron Oronite Company LLC
    Inventors: Casey D. Stokes, Robson F. Storey, James J. Harrison
  • Patent number: 6869917
    Abstract: The present invention relates to a fully formulated lubicants comprising poly ?-olefins (PAOs), prepared from a mixed ?-olefin feed, which exhibit superior Noack volatility at low pour points, and methods for preparing the fully formulated lubricants. The fully formulated lubricants include PAOs that include mixtures of 1-decene and 1-dodecene. The PAOs may be prepared by polymerization/oligomerization using an alcohol promoted BF3 in conjunction with a combination of co-catalysts.
    Type: Grant
    Filed: August 16, 2002
    Date of Patent: March 22, 2005
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Douglas E. Deckman, Mark D. Winemiller, William L. Maxwell, David J. Baillargeon, Norman Yang, Maria Caridad B. Goze
  • Patent number: 6858765
    Abstract: A polyolefin wax for a coating material which includes an ethylene (co)polymer having a number-average molecular weight within the range of from 400 to 5000 as measured by gel permeation chromatography. The polyolefin wax has a volume average particle diameter in the range of from 0.3 ?m to 20 ?m wherein the relation between a particle diameter a (?m), in which the weight ratio of the large particle diameter side in weight particle-size distribution is 10%, and a particle diameter b (?m), in which the weight ratio of the small particle diameter side in weight particle size distribution is 10%, satisfies the a/b?4 and the relation between the crystallization temperature Tc (° C.), measured at a cooling rate of 2° C./min) as measured by differential scanning calorimetry (DSC) and the density D (kg/m3) as measured by the density gradient tube method satisfies the equation 0.501×D?366?Tc.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: February 22, 2005
    Assignee: Mitsui Chemicals, Inc.
    Inventor: Hideo Toyoda
  • Publication number: 20040250467
    Abstract: Aviation fuel, such as jet fuel, blends and methods for improving cold flow properties of such fuels at extremely low temperatures are disclosed. Cold flow properties of, for example, JP-8+100 jet fuel, are improved by addition to the fuel of a polymer formed from polymerization of an &agr;-olefin monomer or monomers. Demonstratable cold flow improvement of such fuels at temperatures of about −53° C. and lower is shown.
    Type: Application
    Filed: June 12, 2003
    Publication date: December 16, 2004
    Applicant: General Electric Company
    Inventors: Fang Deng, William S. Carey, Sherif Eldin, Alan E. Goliaszewski
  • Publication number: 20040254082
    Abstract: A viscosity index (VI) improver concentrate containing at least one VI improver, from 0 to about 5 mass % of lubricating oil flow improver (LOFI) and diluent oil, wherein the diluent oil has a kv100 of at least about 3.0 cSt and a CCS at −35° C. of less than 3700 cPs, and wherein at least about 98 mass % of the concentrate is composed of VI improver, LOFI and diluent oil.
    Type: Application
    Filed: June 12, 2003
    Publication date: December 16, 2004
    Inventors: Ricardo A. Bloch, Jai G. Bansal, Dean B. Clarke
  • Patent number: 6815462
    Abstract: The invention relates to new carbohydrate derivatives of paclitaxel and docetaxel with increased solubility in water as compared to the parent compounds, paclitaxel and docetaxel These derivatives are produced from naturally occurring precursor molecules which upon hydrolysis yield these natural precursors and the original paclitaxel and docetaxel molecules. The present invention also relates to the composition and the use of such derivatives for cancer therapy. These derivatives may also be used in antifungal or antiviral therapy.
    Type: Grant
    Filed: January 9, 2003
    Date of Patent: November 9, 2004
    Assignee: Bioxel Pharma Inc.
    Inventor: Michel Pagé
  • Patent number: 6812274
    Abstract: Pigment concentrates comprising at least one pigment, a polyethylene wax prepared from one ethylene and, if desired, one comonomer using a metallocene catalyst, if desired a thermoplastic polymer and, if desired, additives can be used to color plastic moldings and plastic sheets.
    Type: Grant
    Filed: June 5, 2002
    Date of Patent: November 2, 2004
    Assignee: BASF Aktiengesellschaft
    Inventors: Andreas Deckers, Wilhelm Weber, Stefan Weiss, Naria Edlu Keene von Koenig