Patents by Inventor Margaret May-Som Wu

Margaret May-Som Wu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20120115762
    Abstract: A process for converting feedstock triglycerides to lube basestocks. The process has the steps of (a) metathesizing the feedstock triglycerides with ethylene in the presence of a metathesis catalyst to form alpha olefins and medium-chain triglycerides and (b) hydroisomerizing the medium-chain triglycerides in the presence of a hydroisomerization catalyst and hydrogen to form methyl-branched triglycerides. The alpha olefins may be oligomerized in the presence of an oligomerization catalyst to form poly(alpha olefins).
    Type: Application
    Filed: November 10, 2010
    Publication date: May 10, 2012
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Kun Wang, Margaret May-Som Wu, Alan Anthony Galuska, David Lawrence Stern
  • Patent number: 8071835
    Abstract: The invention is directed to a process for producing polyolefins by one or more homogeneous or colloidal polymerization catalyst wherein residual catalyst is removed by using a solid sorbent.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: December 6, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret May-Som Wu, Norman Yang, Mark Paul Hagemeister, Shakeel Tirmizi
  • Patent number: 7989670
    Abstract: This invention relates to processes to produce liquid poly-alpha-olefins (PAOs) having a kinematic viscosity at 100° C. of more than 20 cSt in the presence of a metallocene catalyst with a non-coordinating anion activator and hydrogen.
    Type: Grant
    Filed: January 22, 2007
    Date of Patent: August 2, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret May-Som Wu, Catalina L. Coker, John F. Walzer, Jr., Peijun Jiang, Steven P. Rucker
  • Publication number: 20110160107
    Abstract: Provided is a block copolymer having an “A” block of a functionalized hydrocarbon moiety including one or more functional end groups selected from the group consisting of: epoxides, amines, acids, acid chlorides, acid anhydrides, halogens, vinyl or vinylidene double bond, aromatic rings and thiols, and a “B” block of a functionalized polyether moiety including one or more functional end groups selected from the group consisting: epoxides, amines, acids, acid chlorides, acid anhydrides, halogens, vinyl or vinylidene double bond, aromatic rings and thiols. The end group of the polyether moiety is different than the end group of the hydrocarbon moiety, and the hydrocarbon moiety and the polyether moiety are copolymerizable therewith. Preferably, the hydrocarbon moiety is a poly-?-olefin and the polyether moiety is a polyalkylene glycol.
    Type: Application
    Filed: December 21, 2010
    Publication date: June 30, 2011
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Abhimanyu Onkar Patil, Margaret May-Som Wu, Satish Bodige, Man Kit Ng
  • Publication number: 20110098204
    Abstract: A poly(alpha-olefin/alkylene glycol) copolymer of the following formula: wherein R3, R4, Ra, and Rb are, independently, any of H, a C1 to C18 normal or branched alkyl radical, or a C1 to C18 aromatic radical or aromatic-containing alkyl radicals; wherein n and m, are, independently, integers from 1 to 1000; and wherein x is an integer from 0 to 10. There is also a process for making the copolymer. There is also a lubricant formulation having the copolymer.
    Type: Application
    Filed: October 23, 2009
    Publication date: April 28, 2011
    Inventors: Abhimanyu Onkar Patil, Satish Bodige, Suzzy Chen Hsi Ho, Thomas Francis Degnan, David Joseph Baillargeon, Margaret May-Som Wu
  • Publication number: 20100256026
    Abstract: Provided are lubricant compositions containing ethylene/?-olefin copolymer viscosity modifiers which impart unique viscometrics in high VI/low aromatics base stocks for engine oil applications. In one form, the lubricant compositions include a blend of Group I to Group V base stocks, or mixtures thereof, and an ethylene/?-olefin copolymer made from ethylene with one or more ?-olefin, wherein the ?-olefin has from 3 to 18 carbon atoms and the ethylene/?-olefin copolymer has a number average molecular weight between 800 and 20,000 and a molecular weight distribution of less than 3.0.
    Type: Application
    Filed: April 3, 2009
    Publication date: October 7, 2010
    Inventors: Margaret May-Som Wu, Willie Allan Givens, JR.
  • Publication number: 20100234654
    Abstract: Provided are processes for making one or more unsaturated oligomeric acids and one or more saturated hydrocarbons. In one form, a process for making one or more saturated hydrocarbons includes oligomerizing one or more unsaturated carboxylic acids having from 4 to 38 carbon atoms in the presence of a molecular sieve catalyst to form one or more unsaturated oligomeric acids including less than 90% by weight of cyclic oligomers, and hydrogenating the one or more unsaturated oligomeric acids via contact with hydrogen in the presence of a hydrogenation catalyst to form one or more saturated hydrocarbons. The oligomerizing of unsaturated fatty acids is from renewable biological sources to form dimer acids. The one or more saturated hydrocarbons are useful as lubricant base oils.
    Type: Application
    Filed: March 4, 2010
    Publication date: September 16, 2010
    Inventors: Kun Wang, Margaret May-Som Wu, David Lawrence Stern
  • Publication number: 20100216678
    Abstract: A lubricant composition comprising a Group I-IV or Group VI lube base stock and a glycerol tri-ester of the formula: wherein R1, R2 and R3 are independently selected from linear or branched C4 to C14 alkyl groups.
    Type: Application
    Filed: February 24, 2009
    Publication date: August 26, 2010
    Inventors: Abhimanyu Onkar Patil, Margaret May-Som Wu, Suzz Chen Hsi Ho
  • Publication number: 20100160506
    Abstract: This disclosure is directed to an integrated method for making synthetic hydrocarbon fluids, plasticizers and polar synthetic lubricant base stocks from a renewable feedstock. More particularly, the disclosure is directed to a metathesis reaction of natural oil or its derivative ester and ethylene in the presence of an effective amount of a metathesis catalyst to form linear alpha-olefins, internal olefins and reduced chain length triglycerides. The linear alpha-olefins and/or internal olefins are polymerized to produce synthetic hydrocarbon fluids in the presence of a suitable catalyst. The reduced chain length triglycerides are converted into polar synthetic lubricant base stocks or plasticizers by hydrogenation, isomerization, followed by hydrogenations, or by hydroisomerization processes. Alternatively, the reduced chain length triglycerides can also be epoxidized to form epoxidized triglyceride plasticizers, optionally followed by carbonation, to form carbonated triglyceride plasticizers.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 24, 2010
    Inventors: Margaret May-Som Wu, Karla Schall Colle, Ramzi Yanni Saleh, Allen D. Godwin, John Edmond Randolph Stanat
  • Publication number: 20100144572
    Abstract: Provided is a lubricant having a first base stock of one or more alkyl cyclohexyl 1,2-dicarboxylate esters at 1 wt % to 50 wt % based on the total weight of the blend, and a second base stock at 99 wt % to 50 wt % based on the total weight of the blend, wherein the second base stock is chosen from (a) one or more C6 to C16 poly-?-olefins, (b) one or more gas-to-liquid materials, and (c) one or more Group I, II, and III oils. Also provided are methods of making such lubricant blends.
    Type: Application
    Filed: December 5, 2008
    Publication date: June 10, 2010
    Inventors: Abhimanyu Onkar Patil, Margaret May-Som Wu
  • Publication number: 20090270296
    Abstract: This invention relates to a hydroxyaromatic functionalized polyalpha-olefin comprising the product of the combination of: a) a polyalpha-olefin comprising one or more C3 to C20 linear alpha-olefins and having at least 10% vinylidene unsaturation, a viscosity index of 80 to 400, an Mn of 300 to about 20,000, and a pour point of 0° C. or less; and b) a hydroxyaromatic moiety; wherein the analine point of the functionalized polyalpha-olefin is at least 10° C. lower than the analine point of the polyalpha-olefin.
    Type: Application
    Filed: April 23, 2008
    Publication date: October 29, 2009
    Inventors: Abhimanyu Onkar Patil, Margaret May-Som Wu, Stephen Zushma, Anura Abhimanyu Patil
  • Publication number: 20090240012
    Abstract: A process for the preparation of oligomeric poly alpha-olefins includes oligomerizing low molecular weight PAO oligomer in the presence of a Lewis acid catalyst such as promoted aluminum trichloride or boron trifluoride under oligomerization conditions. The low molecular weight PAO oligomers used as a feed or feed component of the present process are the light olefinic by-product fractions including the dimers and light fractions from the metallocene-catalyzed PAO oligomerization process which are characterized by a molecular weight of 150 to 600 and a terminal olefin (vinylidene) content of at least 25%.
    Type: Application
    Filed: March 4, 2009
    Publication date: September 24, 2009
    Inventors: Abhimanyu Onkar Patil, Margaret May-Som Wu, Norman Yang
  • Publication number: 20090221775
    Abstract: The invention is directed to a process for the preparation of lubricant base stocks by contacting alphaolefin feedstocks with single-site metallocene catalysts and recycling unconverted monomers, characterized by a purge step in the recycle.
    Type: Application
    Filed: December 22, 2008
    Publication date: September 3, 2009
    Inventors: Mark Hagemeister, Anatoly Ilich Kramer, Pramod Jayant Nandapurkar, Shakeel Tirmizi, Margaret May-Som Wu
  • Publication number: 20090005279
    Abstract: This invention relates to a polyalpha-olefin (and hydrogenated analogs thereof) comprising more than 50 mole % of one or more C5 to C24 alpha-olefin monomers where the polyalpha-olefin has: a) 40 mole % or more of mm triads, b) a Bromine number of Y or greater, where Y is equal to 89.92*(V)?°5863, where V is the Kinematic Viscosity of the polyalpha-olefin measured at 100° C. in cSt, and c) 1,2 disubstituted olefins present at 7 mole % or more, preferably having Z mole % or more of units represented by the formula: where j, k and m are each, independently, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, or 22, n is an integer from 1 to 350, and where Z=8.420*Log(V)?4.048, where V is the kinematic viscosity of the polyalpha-olefin measured at 1000 C in cSt This invention also relates to process to produce such polyalpha-olefins.
    Type: Application
    Filed: June 2, 2006
    Publication date: January 1, 2009
    Inventors: Margaret May-Som Wu, Lisa Saunders Baugh, Jo Ann Canich, Chia Shian Chee, Mark Paul Hagemeister, Andrew Jackson, Peijun Jiang, Gordon H. Lee, Frederick Yip-Kwai Lo, Steven P. Rucker, Shakeel Tirmizi, John F. Walzer, JR., Norman Yang
  • Patent number: 7456329
    Abstract: Polyolefins made in accordance with the present invention are produced by polymerizing an unsaturated olefin or combination of unsaturated olefins to produce an unsaturated polyolefin, isomerizing the unsaturated polyolefin in the presence of an acid catalyst under conditions to produce a substantially unsaturated-isomerized polyolefin, and hydrogenating the unsaturated-isomerized polyolefin to produce a saturated isomerized polyolefin. A lube oil comprising the inventive saturated isomerized polyolefin is also disclosed.
    Type: Grant
    Filed: November 30, 2005
    Date of Patent: November 25, 2008
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Margaret May-Som Wu, Norman Yang, Anatoly Ilich Kramer
  • Publication number: 20080177121
    Abstract: This invention relates to processes to produce liquid poly-alpha-olefins (PAOs) having a kinematic viscosity at 100° C. of more than 20 cSt in the presence of a metallocene catalyst with a non-coordinating anion activator and hydrogen.
    Type: Application
    Filed: January 22, 2007
    Publication date: July 24, 2008
    Inventors: Margaret May-Som Wu, Cataline L. Coker, John F. Walzer, Peijun Jiang, Steven P. Rucker
  • Publication number: 20080020928
    Abstract: The invention is directed to a process for producing polyolefins by one or more homogeneous or colloidal polymerization catalyst wherein residual catalyst is removed by using a solid sorbent
    Type: Application
    Filed: April 26, 2007
    Publication date: January 24, 2008
    Inventors: Margaret May-Som Wu, Norman Yang, Mark Paul Hagemeister, Shakeel Tirmizi
  • Patent number: 7022784
    Abstract: A liquid polymer suitable for use as a lubricant base oil is produced by polymerizing ethylene and at least one alpha-olefin using a metallocene catalyst to provide a polymer which is then isomerized and hydrogenated to produce the liquid polymer.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: April 4, 2006
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Margaret May-Som Wu, Steven P. Rucker, Richard T. Spissell, Steven Edward Donnachie
  • Patent number: 6872692
    Abstract: A synthetic lubricant base stock is provided having a kinematic viscosity at 100° C. of from 5 to about 300 cS and a VI greater than 100. The base stock comprises random co-oligomers of an alpha olefin or mixtures thereof and an olefinic substituted aromatic compound which co-oligomers are prepared in the presence of a Friedel-Crafts catalyst.
    Type: Grant
    Filed: September 10, 2002
    Date of Patent: March 29, 2005
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Margaret May-Som Wu, Steven Edward Donnachie, James Thomas Carey, Walter David Vann, Norman Yang, Dilip Surana
  • Publication number: 20040082728
    Abstract: A liquid polymer suitable for use as a lubricant base oil is produced by polymerizing ethylene and at least one alpha-olefin using a metallocene catalyst to provide a polymer which is then isomerized and hydrogenated to produce the liquid polymer.
    Type: Application
    Filed: September 16, 2003
    Publication date: April 29, 2004
    Inventors: Margaret May-Som Wu, Steven P. Rucker, Richard T. Spissell, Steven Edward Donnachie