Patents by Inventor Donna Jean Crowther

Donna Jean Crowther 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).

  • Patent number: 10017708
    Abstract: This disclosure relates to a composition for use as an additive for fuels and lubricants including a reductive amination product of a vinyl terminated macromonomer (VTM) based aldehyde. Optionally aldehyde is reacted with the amino compound under condensation conditions sufficient to give an imine intermediate, and the imine intermediate is reacted under hydrogenation conditions sufficient to give the composition. The aldehyde is formed by reacting a VTM under hydroformylation conditions sufficient to form the aldehyde. A reductive amination method for making a composition for use as an additive for fuels and lubricants. The method includes reacting a VTM based aldehyde with an amino compound containing at least one —NH— group under condensation conditions sufficient to give an imine intermediate, and reacting the imine intermediate under hydrogenation conditions sufficient to give said composition. The aldehyde is formed by reacting a VTM under hydroformylation conditions sufficient to form the aldehyde.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: July 10, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Abhimanyu Onkar Patil, John W. Chu, Satish Bodige, Liehpao Oscar Farng, Donna Jean Crowther, Man Kit Ng, Patrick Brant, Kathryn L. Peretti
  • Patent number: 9487729
    Abstract: Provided are lubricant compositions and hydrocarbon fluids including one or more lubricant base stocks and an effective amount of one more zero SAP antiwear additives and/or corrosion inhibitor additives, wherein the one more antiwear and/or corrosion inhibitor additives include one or more functionalized polyolefins having one or more pyridazine moieties. Such compositions exhibit improved anti-wear, friction reduction and anti-corrosion properties.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: November 8, 2016
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Tabassumul Haque, Andy Haishung Tsou, Peter W. Jacobs, Rahul Ravindra Kulkarni, Donna Jean Crowther
  • Patent number: 9359484
    Abstract: A process for making a silica-polyolefin composite. The process has the steps of (a) reacting silica particles and an alkyl halosilane in the presence of a solvent and a catalyst to form silane-functionalized silica particles and (b) reacting the silane-functionalized silica particles with a vinyl-terminated polyolefin. There are other processes for making a silica-polyolefin composites. There are other processes for making metal phosphate-polyolefin composites.
    Type: Grant
    Filed: May 15, 2014
    Date of Patent: June 7, 2016
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Andy Haishung Tsou, Shuji Luo, Donna Jean Crowther, Victor DeFlorio
  • Patent number: 9266812
    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: Grant
    Filed: December 21, 2011
    Date of Patent: February 23, 2016
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Yong Yang, Andy Haishung Tsou, Donna Jean Crowther
  • Publication number: 20140336324
    Abstract: A process for making a silica-polyolefin composite. The process has the steps of (a) reacting silica particles and an alkyl halosilane in the presence of a solvent and a catalyst to form silane-functionalized silica particles and (b) reacting the silane-functionalized silica particles with a vinyl-terminated polyolefin. There are other processes for making a silica-polyolefin composites. There are other processes for making metal phosphate-polyolefin composites.
    Type: Application
    Filed: May 15, 2014
    Publication date: November 13, 2014
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Andy Haishung Tsou, Shuji Luo, Donna Jean Crowther, Victor DeFlorio
  • Patent number: 8840996
    Abstract: A process for making a silica-polyolefin composite. The process has the steps of (a) reacting silica particles and an alkyl halosilane in the presence of a solvent and a catalyst to form silane-functionalized silica particles and (b) reacting the silane-functionalized silica particles with a vinyl-terminated polyolefin. There are other processes for making a silica-polyolefin composites. There are other processes for making metal phosphate-polyolefin composites.
    Type: Grant
    Filed: December 19, 2011
    Date of Patent: September 23, 2014
    Assignee: ExxonMobil Research and Engineering Company
    Inventors: Andy Haishung Tsou, Shuji Luo, Donna Jean Crowther, Victor DeFlorio
  • Publication number: 20140179578
    Abstract: Provided is an alternating block copolymer. The alternating block copolymer has an olefin polymer block and an poly(alkyl methacrylate) block. The olefin polymer block has monomeric units of one or more alpha olefins of 2 to 12 carbon atoms that make up 90 wt % or more of the total weight of the olefin polymer block. The olefin polymer block exhibits a number average molecular weight of the olefin polymer block is 1000 to 500,000. The poly(alkyl methacrylate) block has monomeric units of one or more alkyl methacrylates with alkyl side chains of 1 to 100 carbon atoms that make up 90 wt % or more of the total weight of the poly(alkyl methacrylate) block. The poly(alkyl methacrylate) block exhibits a number average molecular weight of 1000 to 500,000. There is also provided a lubricant composition containing the alternating block copolymer and a process for making the alternating block copolymer.
    Type: Application
    Filed: December 24, 2012
    Publication date: June 26, 2014
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Andy Haishung Tsou, Yong Yang, Martin N. Webster, Thomas Sun, Johannes Mattieu Soulages, Donna Jean Crowther, C. Rebecca Locker
  • Publication number: 20140113844
    Abstract: Provided are lubricant compositions and hydrocarbon fluids including one or more lubricant base stocks and an effective amount of one more zero SAP antiwear additives and/or corrosion inhibitor additives, wherein the one more antiwear and/or corrosion inhibitor additives include one or more functionalized polyolefins having one or more pyridazine moieties. Such compositions exhibit improved anti-wear, friction reduction and anti-corrosion properties.
    Type: Application
    Filed: October 22, 2013
    Publication date: April 24, 2014
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Tabassumul Haque, Andy Haishung Tsou, Peter W. Jacobs, Rahul Ravindra Kulkarni, Donna Jean Crowther
  • Publication number: 20140087985
    Abstract: This disclosure relates to a composition for use as an additive for fuels and lubricants including a reductive amination product of a vinyl terminated macromonomer (VTM) based aldehyde. Optionally aldehyde is reacted with the amino compound under condensation conditions sufficient to give an imine intermediate, and the imine intermediate is reacted under hydrogenation conditions sufficient to give the composition. The aldehyde is formed by reacting a VTM under hydroformylation conditions sufficient to form the aldehyde. A reductive amination method for making a composition for use as an additive for fuels and lubricants. The method includes reacting a VTM based aldehyde with an amino compound containing at least one —NH— group under condensation conditions sufficient to give an imine intermediate, and reacting the imine intermediate under hydrogenation conditions sufficient to give said composition. The aldehyde is formed by reacting a VTM under hydroformylation conditions sufficient to form the aldehyde.
    Type: Application
    Filed: September 4, 2013
    Publication date: March 27, 2014
    Applicant: ExxonMobil Research and Engineering Company
    Inventors: Abhimanyu Onkar Patil, John W. Chu, Satish Bodige, Liehpao Oscar Farng, Donna Jean Crowther, Man Kit Ng, Patrick Brant, Kathryn L. Peretti
  • 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: 20130158180
    Abstract: A process for making a silica-polyolefin composite. The process has the steps of (a) reacting silica particles and an alkyl halosilane in the presence of a solvent and a catalyst to form silane-functionalized silica particles and (b) reacting the silane-functionalized silica particles with a vinyl-terminated polyolefin. There are other processes for making a silica-polyolefin composites. There are other processes for making metal phosphate-polyolefin composites.
    Type: Application
    Filed: December 19, 2011
    Publication date: June 20, 2013
    Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANY
    Inventors: Andy Haishung Tsou, Shuji Luo, Donna Jean Crowther, Victor DeFlorio
  • Patent number: 7943700
    Abstract: Disclosed are polyethylene (“PE”) compositions, articles comprising PE compositions, and methods of making blended PE compositions, wherein the blended composition comprises from about 80 to about 95 weight % of a first PE and from about 5 to about 20 weight % of a second PE. The first PE has a density greater than or equal to about 0.945 g/cc and a MWD greater than about 5. The second PE has a density less than about 0.945 g/cc, a melt index less than about 0.70 g/10 minutes and less than or equal to the melt index of the first PE, a MWD ranging from about 1 to about 5, a weight average molecular weight less than about 400,000, and a CDBI greater than about 50%. The PE composition has an ESCR greater than the ESCR of the first PE.
    Type: Grant
    Filed: June 1, 2006
    Date of Patent: May 17, 2011
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna Jean Crowther, Stanley J. Katzen, Zerong Lin, Arnold Lustiger, Jeanne Marie MacDonald, Thomas T. Sun
  • Patent number: 7829495
    Abstract: The invention comprises an olefin polymerization process comprising contacting ethylene alone or with one or more olefinically unsaturated comonomers with a Group 3-6 metallocene catalyst compound comprising one ?-bonded ring having a C3 or greater hydrocarbyl, hydrocarbylsilyl or hydrocarbylgermyl substituent said substituent bonded to the ring through a primary carbon atom; and, where the compound contains two ?-bonded rings, the total number of substituents on the rings is equal to a number from 3 to 10, said rings being asymmetrically substituted where the number of substituents is 3 or 4. The invention process is particularly suitable for preparing ethylene copolymers having an MIR less than about 35, while retaining narrow CD even at high comonomer incorporation rates, and with certain embodiments providing ethylene copolymers having improved melt strength with the low MIR.
    Type: Grant
    Filed: August 31, 2004
    Date of Patent: November 9, 2010
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Joseph C. Floyd, Moses Olukayode Jejelowo, Donna Jean Crowther, George Alan Vaughan, Ching Tai Lue
  • Publication number: 20070282071
    Abstract: Disclosed are polyethylene (“PE”) compositions, articles comprising PE compositions, and methods of making blended PE compositions, wherein the blended composition comprises from about 80 to about 95 weight % of a first PE and from about 5 to about 20 weight % of a second PE. The first PE has a density greater than or equal to about 0.945 g/cc and a MWD greater than about 5. The second PE has a density less than about 0.945 g/cc, a melt index less than about 0.70 g/10 minutes and less than or equal to the melt index of the first PE, a MWD ranging from about 1 to about 5, a weight average molecular weight less than about 400,000, and a CDBI greater than about 50%. The PE composition has an ESCR greater than the ESCR of the first PE.
    Type: Application
    Filed: June 1, 2006
    Publication date: December 6, 2007
    Inventors: Donna Jean Crowther, Stanley J. Katzen, Zerong Lin, Arnold Lustiger, Jeanne Marie MacDonald, Thomas T. Sun
  • Patent number: 7199072
    Abstract: A process for preparing a mixed catalyst compound used in the polymerization of polyolefins to produce bimodal polyethylenes is disclosed. In an embodiment, a process of preparing the mixed catalyst system includes: mixing a first catalyst and an activator in a first liquid medium to form a first mixture, combining a support with the first mixture to form a first support slurry, drying the first support slurry in an extent sufficient to provide a dried supported first catalyst, mixing the dried supported first catalyst in a second liquid medium to form a second support slurry, and combining one or more additional catalysts with the second support slurry to provide the mixed catalyst compound.
    Type: Grant
    Filed: September 16, 2003
    Date of Patent: April 3, 2007
    Assignee: Univation Technologies, LLC
    Inventors: Donna Jean Crowther, John Francis Szul
  • Patent number: 6960634
    Abstract: The melt strength and the melt index ratio of ethylene-based polyolefins are controlled by the lower alkyl substitution pattern of the bridged cyclopentadienyl ligands of metallocene polymerization catalyst precursor compounds.
    Type: Grant
    Filed: October 31, 2001
    Date of Patent: November 1, 2005
    Assignee: Univation Technologies, LLC
    Inventors: Donna Jean Crowther, Ching-Tai Lue, Phillip Thomas Matsunaga
  • Patent number: 6890876
    Abstract: Processes of producing fluorided catalyst compounds and process of producing polyolefins using these catalyst compounds are disclosed. An embodiment of the process includes contacting a nitrogenous metallocene compound with a fluoriding agent, which preferably includes a fluorided anhydrous acid, for a time sufficient to form a fluorided metallocene catalyst compound. An example of the process to produce a fluorided metallocene is: wherein N is nitrogen, R and R? are groups selected from hydrogen, hydrocarbons, heteroatom-containing hydrocarbons and halides, p can be 0 (if no substituent groups are present on the Cp rings) or an integer from 1 to 5; adjacent R groups can form another ring system (e.g., to form a tetrahydroindenyl or indenyl group); and the other groups are defined as herein; wherein “Eq.” are the equivalents of fluoriding agent combined with the nitrogenous metallocene compound ranging from 1 to 10 in one embodiment.
    Type: Grant
    Filed: August 25, 2003
    Date of Patent: May 10, 2005
    Assignee: Univation Technologies, LLC
    Inventors: Laughlin G. McCullough, Donna Jean Crowther
  • Patent number: 6806220
    Abstract: This application discloses triphenyl carbenium NCA's as catalyst activators for a class of asymmetrically bridged hafnocene catalyst precursors. These catalyst precursors are activated into olefin polymerization catalysts and are suitable for gas, solution, and slurry-phase polymerization reactions. The disclosed bridge is methylenyl- or silanylenyl-based and is optionally, alkyl or aryl substituted. The catalytic activity of the disclosed hafnocene catalyst precursors is substantially enhanced over identical catalysts that are activated with other activators.
    Type: Grant
    Filed: June 27, 2002
    Date of Patent: October 19, 2004
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Donna Jean Crowther, Bernard Jean Folie
  • Patent number: 6800704
    Abstract: The invention comprises an olefin polymerization process comprising contacting ethylene alone or with one or more olefinically unsaturated comonomers with a Group 3-6 metallocene catalyst compound comprising one &pgr;-bonded ring having a C3 or greater hydrocarbyl, hydrocarbylsilyl or hydrocarbylgermyl substituent said substituent bonded to the ring through a primary carbon atom; and, where the compound contains two &pgr;-bonded rings, the total number of substituents on the rings is equal to a number from 3 to 10, said rings being asymmetrically substituted where the number of substituents is 3 or 4. The invention process is particularly suitable for preparing ethylene copolymers having an MIR less than about 35, while retaining narrow CD even at high comonomer incorporation rates, and with certain embodiments providing ethylene copolymers having improved melt strength with the low MIR.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: October 5, 2004
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Joseph C. Floyd, Moses Olukayode Jejelowo, Donna Jean Crowther, George Alan Vaughan, Ching Tai Lue
  • Patent number: 6767856
    Abstract: This invention is directed to cationic polymerization of olefins using catalysts comprising a Group 6 or 10 neutral transition metal cation composition having a cyclopropenyl ring, a pi-bonded cyclopentadienyl ligand or cyclopentadienyl group-containing ligand and an amido or imido ligand. The precursor of the neutral transition metal composition is activated to a catalytic state by exposure to an activator composition that may be any of the heretofore known activator compositions such as an alumoxane or a compatible non-coordinating anion (NCA).
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: July 27, 2004
    Assignee: Univation Technologies, LLC
    Inventor: Donna Jean Crowther