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: 10017708Abstract: 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: GrantFiled: September 4, 2013Date of Patent: July 10, 2018Assignee: 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: 9487729Abstract: 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: GrantFiled: October 22, 2013Date of Patent: November 8, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Tabassumul Haque, Andy Haishung Tsou, Peter W. Jacobs, Rahul Ravindra Kulkarni, Donna Jean Crowther
-
Patent number: 9359484Abstract: 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: GrantFiled: May 15, 2014Date of Patent: June 7, 2016Assignee: ExxonMobil Research and Engineering CompanyInventors: Andy Haishung Tsou, Shuji Luo, Donna Jean Crowther, Victor DeFlorio
-
Patent number: 9266812Abstract: 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: GrantFiled: December 21, 2011Date of Patent: February 23, 2016Assignee: ExxonMobil Research and Engineering CompanyInventors: Yong Yang, Andy Haishung Tsou, Donna Jean Crowther
-
Publication number: 20140336324Abstract: 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: ApplicationFiled: May 15, 2014Publication date: November 13, 2014Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Andy Haishung Tsou, Shuji Luo, Donna Jean Crowther, Victor DeFlorio
-
Patent number: 8840996Abstract: 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: GrantFiled: December 19, 2011Date of Patent: September 23, 2014Assignee: ExxonMobil Research and Engineering CompanyInventors: Andy Haishung Tsou, Shuji Luo, Donna Jean Crowther, Victor DeFlorio
-
Publication number: 20140179578Abstract: 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: ApplicationFiled: December 24, 2012Publication date: June 26, 2014Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Andy Haishung Tsou, Yong Yang, Martin N. Webster, Thomas Sun, Johannes Mattieu Soulages, Donna Jean Crowther, C. Rebecca Locker
-
Publication number: 20140113844Abstract: 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: ApplicationFiled: October 22, 2013Publication date: April 24, 2014Applicant: ExxonMobil Research and Engineering CompanyInventors: Tabassumul Haque, Andy Haishung Tsou, Peter W. Jacobs, Rahul Ravindra Kulkarni, Donna Jean Crowther
-
Publication number: 20140087985Abstract: 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: ApplicationFiled: September 4, 2013Publication date: March 27, 2014Applicant: ExxonMobil Research and Engineering CompanyInventors: Abhimanyu Onkar Patil, John W. Chu, Satish Bodige, Liehpao Oscar Farng, Donna Jean Crowther, Man Kit Ng, Patrick Brant, Kathryn L. Peretti
-
Publication number: 20130165358Abstract: 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: ApplicationFiled: December 21, 2011Publication date: June 27, 2013Applicant: ExxonMobil Research and Egineering CompanyInventors: Yong Yang, Andy Haishung Tsou, Donna Jean Crowther
-
Publication number: 20130158180Abstract: 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: ApplicationFiled: December 19, 2011Publication date: June 20, 2013Applicant: EXXONMOBIL RESEARCH AND ENGINEERING COMPANYInventors: Andy Haishung Tsou, Shuji Luo, Donna Jean Crowther, Victor DeFlorio
-
Patent number: 7943700Abstract: 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: GrantFiled: June 1, 2006Date of Patent: May 17, 2011Assignee: ExxonMobil Chemical Patents Inc.Inventors: Donna Jean Crowther, Stanley J. Katzen, Zerong Lin, Arnold Lustiger, Jeanne Marie MacDonald, Thomas T. Sun
-
Patent number: 7829495Abstract: 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: GrantFiled: August 31, 2004Date of Patent: November 9, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Joseph C. Floyd, Moses Olukayode Jejelowo, Donna Jean Crowther, George Alan Vaughan, Ching Tai Lue
-
Publication number: 20070282071Abstract: 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: ApplicationFiled: June 1, 2006Publication date: December 6, 2007Inventors: Donna Jean Crowther, Stanley J. Katzen, Zerong Lin, Arnold Lustiger, Jeanne Marie MacDonald, Thomas T. Sun
-
Patent number: 7199072Abstract: 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: GrantFiled: September 16, 2003Date of Patent: April 3, 2007Assignee: Univation Technologies, LLCInventors: Donna Jean Crowther, John Francis Szul
-
Patent number: 6960634Abstract: 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: GrantFiled: October 31, 2001Date of Patent: November 1, 2005Assignee: Univation Technologies, LLCInventors: Donna Jean Crowther, Ching-Tai Lue, Phillip Thomas Matsunaga
-
Patent number: 6890876Abstract: 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: GrantFiled: August 25, 2003Date of Patent: May 10, 2005Assignee: Univation Technologies, LLCInventors: Laughlin G. McCullough, Donna Jean Crowther
-
Patent number: 6806220Abstract: 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: GrantFiled: June 27, 2002Date of Patent: October 19, 2004Assignee: ExxonMobil Chemical Patents Inc.Inventors: Donna Jean Crowther, Bernard Jean Folie
-
Patent number: 6800704Abstract: 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: GrantFiled: April 22, 2002Date of Patent: October 5, 2004Assignee: ExxonMobil Chemical Patents Inc.Inventors: Joseph C. Floyd, Moses Olukayode Jejelowo, Donna Jean Crowther, George Alan Vaughan, Ching Tai Lue
-
Patent number: 6767856Abstract: 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: GrantFiled: August 9, 2000Date of Patent: July 27, 2004Assignee: Univation Technologies, LLCInventor: Donna Jean Crowther