Patents by Inventor Thomas T. Sun
Thomas T. Sun 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).
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Patent number: 11952480Abstract: In some embodiments, the present disclosure provides a composition comprising 1) about 97.5 wt % to about 99.9 wt % of a first polyethylene having a density of about 0.91 g/cm3 to about 0.94 g/cm3, and a melt strength of about 10 mN or greater; and 2) about 0.1 wt % to about 2.5 wt % of a second polyethylene having an Mw of about 500,000 g/mol or more. In some embodiments, the composition is a film. In some embodiments, the present disclosure provides a method of making a composition comprising blending a first polyethylene of any embodiment described herein and a second polyethylene of any embodiment described herein.Type: GrantFiled: February 5, 2019Date of Patent: April 9, 2024Assignee: ExxonMobil Chemical Patents Inc.Inventors: Johannes M. Soulages, Arnold Lustiger, Thomas T. Sun, Pamela J. Wright, Madhavi Vadlamudi, Alexander I. Norman, Adriana S. Silva, David M. Fiscus, Timothy D. Shaffer
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Patent number: 11299561Abstract: A continuous process for preparing an ethylene-based polyolefin, the process comprising maintaining a polymerization mixture at a temperature at or above the lower critical phase separation temperature of the polymerization mixture, while, during said step of maintaining, maintaining the polymerization mixture at steady state, where the polymerization mixture is substantially uniform in temperature, pressure, and concentration, where the polymerization mixture includes solvent, monomer including ethylene and optionally monomer copolymerizable with ethylene, a single-site catalyst system, and polymer resulting from the polymerization of the monomer, where the monomer and the polymer are dissolved in the solvent, and where the polymer is an ethylene-based polyolefin having a molecular weight distribution (Mw/Mn) of less than 2.30.Type: GrantFiled: January 15, 2020Date of Patent: April 12, 2022Assignee: ExxonMobil Chemical Patents Inc.Inventors: Gabor Kiss, Thomas T. Sun
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Publication number: 20210371632Abstract: In some embodiments, the present disclosure provides a composition comprising 1) about 97.5 wt % to about 99.9 wt % of a first polyethylene having a density of about 0.91 g/cm3 to about 0.94 g/cm3, and a melt strength of about 10 mN or greater; and 2) about 0.1 wt % to about 2.5 wt % of a second polyethylene having an Mw of about 500,000 g/mol or more. In some embodiments, the composition is a film. In some embodiments, the present disclosure provides a method of making a composition comprising blending a first polyethylene of any embodiment described herein and a second polyethylene of any embodiment described herein.Type: ApplicationFiled: February 5, 2019Publication date: December 2, 2021Inventors: Johannes M. Soulages, Arnold Lustiger, Thomas T. Sun, Pamela J. Wright, Madhavi Vadlamudi, Alexander I. Norman, Adriana S. Silva, David M. Fiscus, Timothy D. Shaffer
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Publication number: 20210107202Abstract: Methods for forming polyolefin films using a model including a multivariate adaptive regression splines (MARS)-derived algorithm are provided. Related computing devices are also provided.Type: ApplicationFiled: May 22, 2019Publication date: April 15, 2021Inventors: George Rodriguez, Donald A. Winesett, Liezhong Gong, Thomas T. Sun
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Publication number: 20200255549Abstract: A continuous process for preparing an ethylene-based polyolefin, the process comprising maintaining a polymerization mixture at a temperature at or above the lower critical phase separation temperature of the polymerization mixture, while, during said step of maintaining, maintaining the polymerization mixture at steady state, where the polymerization mixture is substantially uniform in temperature, pressure, and concentration, where the polymerization mixture includes solvent, monomer including ethylene and optionally monomer copolymerizable with ethylene, a single-site catalyst system, and polymer resulting from the polymerization of the monomer, where the monomer and the polymer are dissolved in the solvent, and where the polymer is an ethylene-based polyolefin having a molecular weight distribution (Mw/Mn) of less than 2.30.Type: ApplicationFiled: January 15, 2020Publication date: August 13, 2020Inventors: Gabor Kiss, Thomas T. Sun
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Patent number: 9279047Abstract: Propylene-based polymer compositions are provided comprising propylene and from about 5 wt % to about 20 wt % of one or more C2 and/or C4-C12 ?-olefins. The polymer compositions have a triad tacticity greater than about 90%, a heat of fusion less than about 75 J/g, and a melt flow rate (MFR) greater than or equal to about 25 g/10 min (230° C., 2.16 kg). Further, the polymer compositions are reactor grade compositions comprising a reactor blend of a first polymer and a second polymer, preferably where both of the first and second polymers are prepared using the same catalyst system. Meltspun nonwoven fabrics, such as meltblown or spunbond fabrics, comprising such polymer compositions are also provided, as well as processes for forming the nonwoven fabrics.Type: GrantFiled: March 10, 2014Date of Patent: March 8, 2016Assignee: ExxonMobil Chemical Patents Inc.Inventors: Galen C. Richeson, Rainer Kolb, Jean-Roch H. Schauder, Thomas T. Sun
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Patent number: 9175240Abstract: Provided are ethylene-based copolymers, methods of preparing the same, lubricating oil compositions including the same, methods for preparing such lubricating oil compositions, and end uses for such ethylene-based copolymers and lubricating oil compositions. The ethylene-based copolymers may include from about 35 wt. % to about 60 wt. % of units derived from ethylene and at least 1.0 wt. % of one or more alpha-olefin comonomers having 3 to 20 carbon atoms. The ethylene-based copolymers are substantially amorphous and have a polydispersity index of about 2.8 or less.Type: GrantFiled: October 12, 2012Date of Patent: November 3, 2015Assignee: ExxonMobil Chemical Patents Inc.Inventors: Rainer Kolb, Sudhin Datta, Liehpao O. Farng, Vera Minak-Bernero, Eric B. Sirota, Thomas T. Sun, Mun-Fu Tse
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Patent number: 9006161Abstract: Disclosed are rheology modifiers comprising compositionally disperse polymeric compositions and/or crystallinity disperse polymeric compositions that may be useful in modifying the rheological properties of lubrication fluids, and methods for making such compositions. The compositionally disperse polymeric composition are formed from at least two discrete compositions of ethylene copolymers. The crystallinity disperse polymeric composition are formed from ethylene copolymers having at least two discrete values of residual crystallinity.Type: GrantFiled: January 18, 2013Date of Patent: April 14, 2015Assignee: ExxonMobil Chemical Patents Inc.Inventors: Sudhin Datta, JoAnn M. Canich, Liehpao O. Farng, Rainer Kolb, Vera Minak-Bernero, Eric B. Sirota, Thomas T. Sun, Mun F. Tse, Manika Varma-Nair
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Publication number: 20140194845Abstract: Propylene-based polymer compositions are provided comprising propylene and from about 5 wt % to about 20 wt % of one or more C2 and/or C4-C12 ?-olefins. The polymer compositions have a triad tacticity greater than about 90%, a heat of fusion less than about 75 J/g, and a melt flow rate (MFR) greater than or equal to about 25 g/10 min (230° C., 2.16 kg). Further, the polymer compositions are reactor grade compositions comprising a reactor blend of a first polymer and a second polymer, preferably where both of the first and second polymers are prepared using the same catalyst system. Meltspun nonwoven fabrics, such as meltblown or spunbond fabrics, comprising such polymer compositions are also provided, as well as processes for forming the nonwoven fabrics.Type: ApplicationFiled: March 10, 2014Publication date: July 10, 2014Inventors: Galen C. Richeson, Rainer Kolb, Jean-Roch H. Schauder, Thomas T. Sun
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Patent number: 8710148Abstract: Propylene-based polymer compositions are provided comprising propylene and from about 5 wt % to about 20 wt % of one or more C2 and/or C4-C12 ?-olefins. The polymer compositions have a triad tacticity greater than about 90%, a heat of fusion less than about 75 J/g, and a melt flow rate (MFR) greater than or equal to about 25 g/10 min (230° C., 2.16 kg). Further, the polymer compositions are reactor grade compositions comprising a reactor blend of a first polymer and a second polymer, preferably where both of the first and second polymers are prepared using the same catalyst system. Meltspun nonwoven fabrics, such as meltblown or spunbond fabrics, comprising such polymer compositions are also provided, as well as processes for forming the nonwoven fabrics.Type: GrantFiled: December 2, 2011Date of Patent: April 29, 2014Assignee: ExxonMobil Chemical Patents Inc.Inventors: Galen C. Richeson, Rainer Kolb, Jean-Roch Schauder, Thomas T. Sun
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Publication number: 20130281339Abstract: Provided are ethylene-based copolymers, methods of preparing the same, lubricating oil compositions including the same, methods for preparing such lubricating oil compositions, and end uses for such ethylene-based copolymers and lubricating oil compositions. The ethylene-based copolymers may include from about 35 wt. % to about 60 wt. % of units derived from ethylene and at least 1.0 wt. % of one or more alpha-olefin comonomers having 3 to 20 carbon atoms. The ethylene-based copolymers are substantially amorphous and have a polydispersity index of about 2.8 or less.Type: ApplicationFiled: October 12, 2012Publication date: October 24, 2013Applicant: ExxonMobil Chemical CompanyInventors: Rainer KOLB, Sudhin DATTA, Liehpao O. FARNG, Vera MINAK-BERNERO, Eric B. SIROTA, Thomas T. SUN, Mun Fu TSE
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Publication number: 20130143461Abstract: Propylene-based polymer compositions are provided comprising propylene and from about 5 wt % to about 20 wt % of one or more C2 and/or C4-C12 ?-olefins. The polymer compositions have a triad tacticity greater than about 90%, a heat of fusion less than about 75 J/g, and a melt flow rate (MFR) greater than or equal to about 25 g/10 min (230° C., 2.16 kg). Further, the polymer compositions are reactor grade compositions comprising a reactor blend of a first polymer and a second polymer, preferably where both of the first and second polymers are prepared using the same catalyst system. Meltspun nonwoven fabrics, such as meltblown or spunbond fabrics, comprising such polymer compositions are also provided, as well as processes for forming the nonwoven fabrics.Type: ApplicationFiled: December 2, 2011Publication date: June 6, 2013Inventors: Galen C. Richeson, Rainer Kolb, Jean-Roch Schauder, Thomas T. Sun
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Publication number: 20130131256Abstract: Disclosed are rheology modifiers comprising compositionally disperse polymeric compositions and/or crystallinity disperse polymeric compositions that may be useful in modifying the rheological properties of lubrication fluids, and methods for making such compositions. The compositionally disperse polymeric composition are formed from at least two discrete compositions of ethylene copolymers. The crystallinity disperse polymeric composition are formed from ethylene copolymers having at least two discrete values of residual crystallinity.Type: ApplicationFiled: January 18, 2013Publication date: May 23, 2013Applicant: ExxonMobil Chemical Patents Inc.Inventors: Sudhin Datta, Jo Ann M. Canich, Liehpao O. Farng, Rainer Kolb, Vera Minak-Bernero, Eric B. Sirota, Thomas T. Sun, Mun-Fu Tse, Manika Varma-Nair
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Patent number: 8247495Abstract: Elastomeric polymer blends and processes for their production are described. Specifically, the polymer blends comprise a first polymer and a second polymer, where the first polymer comprises from about 70 wt % to about 90 wt % units derived from propylene and from about 10 wt % to about 30 wt % units derived from ethylene and/or a C4-C10 alpha-olefin, and the second polymer comprises from about 88 wt % to about 98 wt % units derived from propylene and from about 2 wt % to about 12 wt % units derived from ethylene and/or a C4-C10 alpha-olefin. The elastomeric polymer blends are further characterized by having two or more of the following properties: an overall propylene content of between about 75 wt % and about 90 wt %, a melting point between about 110° C. and about 145° C., a Vicat softening point greater than about 45° C.Type: GrantFiled: January 27, 2011Date of Patent: August 21, 2012Assignee: ExxonMobil Chemical Patents Inc.Inventors: Rainer Kolb, John W. Chu, Gabor Kiss, Robert P. Reynolds, Jr., Jean-Roch Schauder, Thomas T. Sun
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Publication number: 20110207888Abstract: Elastomeric polymer blends and processes for their production are described. Specifically, the polymer blends comprise a first polymer and a second polymer, where the first polymer comprises from about 70 wt % to about 90 wt % units derived from propylene and from about 10 wt % to about 30 wt % units derived from ethylene and/or a C4-C10 alpha-olefin, and the second polymer comprises from about 88 wt % to about 98 wt % units derived from propylene and from about 2 wt % to about 12 wt % units derived from ethylene and/or a C4-C10 alpha-olefin. The elastomeric polymer blends are further characterized by having two or more of the following properties: an overall propylene content of between about 75 wt % and about 90 wt %, a melting point between about 110° C. and about 145° C., a Vicat softening point greater than about 45° C.Type: ApplicationFiled: January 27, 2011Publication date: August 25, 2011Inventors: Rainer Kolb, John W. Chu, Gabor Kiss, Robert P. Reynolds, JR., Jean-Roch Schauder, Thomas T. Sun
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Publication number: 20110207637Abstract: This invention relates to an ethylene copolymer for lubricating oil, comprising: ethylene; at least one alpha-olefin having 3 or more carbon atoms; and at least one vicinally substituted olefin having 2 to 40 carbon atoms, wherein: the copolymer has a weight-average molecular weight (Mw) of about 50,000 to about 500,000; and an intensity ratio of S?? to S?? insertions, as determined by a 13C-NMR spectrum of less than 0.5.Type: ApplicationFiled: December 29, 2010Publication date: August 25, 2011Inventors: Sudhin Datta, Smita Kacker, Mun F. Tse, Thomas T. Sun, Eric B. Sirota, Vera Minak-Bernero, Liehpao O. Farng
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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
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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