Patents by Inventor Alexander I. Norman

Alexander I. Norman 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: 11952480
    Abstract: 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: Grant
    Filed: February 5, 2019
    Date of Patent: April 9, 2024
    Assignee: 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
  • Publication number: 20210371632
    Abstract: 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: Application
    Filed: February 5, 2019
    Publication date: December 2, 2021
    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
  • Patent number: 10858504
    Abstract: A composite comprising a polyethylene and within a range from 1 wt % to 25 wt % of at least one cyclic-olefin copolymer by weight of the composition, where the polyethylene may have a density of at least 0.90 g/cm3, and where the cyclic-olefin copolymer has a glass transition temperature (Tg) of at least 30° C. Disclosed also is the feature of orienting the composite to form an oriented article, wherein the article comprises rods having an average length of at least 1 ?m, and at least 5 nm in average diameter.
    Type: Grant
    Filed: April 27, 2018
    Date of Patent: December 8, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Yong Yang, Alexander I. Norman, Andy H. Tsou, Kimari T. M. Slaughter, Bethany M. Welke, Dinara R. Sunagatullina
  • Patent number: 10633527
    Abstract: Provided is a composition having 70 wt % to 90 wt % of a first propylene-olefin copolymer component having an ethylene content of 15 to 21 wt %; and 10 wt % to 30 wt % of a second propylene-olefin copolymer component having an ethylene content of 6 to 10 wt %; wherein the weight average molecular weight of the first component is 250,000 to 1,780,000 g/mol higher than the weight average molecular weight of the second component; wherein the reactivity ratio product of the first component is less than 0.75; wherein the reactivity ratio product of the second component is greater than or equal to 0.75.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: April 28, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Alexander I. Norman, Gregory K. Hall, John R. Hagadorn, Andy H. Tsou, Peijun Jiang, Ying Ying Sun, Sarah J. Mattler, Arturo Leyva
  • Patent number: 10633526
    Abstract: Provided is a composition having 60 wt % to 95 wt % of a first propylene alpha-olefin copolymer component having a reactivity ratio product of less than 0.75 and a weight average molecular weight of greater than about 450,000 g/mol; and 5 wt % to 40 wt % of a second propylene alpha-olefin copolymer component having a reactivity ratio of greater than 1.5 and a weight average molecular weight of less than about 215,000 g/mol.
    Type: Grant
    Filed: July 17, 2017
    Date of Patent: April 28, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Andy H. Tsou, Alexander I. Norman, John R. Hagadorn, Gabor Kiss, Peijun Jiang, Sarah J. Mattler
  • Patent number: 10618989
    Abstract: This invention relates to ethylene polymers obtained using a catalyst system comprising fluorided silica, alkylalumoxane activator and at least two metallocene catalyst compounds (a bridged monocyclopentadienyl group 4 transition metal compound and a biscyclopentadientyl group 4 transition metal compound), where the fluorided support has not been calcined at a temperature of 400° C. or more, and is preferably produced using a wet mixing method, such as an aqueous method. The ethylene polymers have: 1) at least 50 mol % ethylene; 2) a reversed comonomer index, mol %, (RCI,m) of 85 or more; 3) a Comonomer Distribution Ratio-2 (CDR-2,m) of the percent comonomer at the z average molecular weight divided by the percent comonomer at the weight average molecular weight plus the number average molecular weight divided by 2 ([% comonomer at Mz]/[% comonomer at ((Mw+Mn)/2)] as determined by GPC of 2.3 or more; and 4) a density of 0.91 g/cc or more.
    Type: Grant
    Filed: April 19, 2016
    Date of Patent: April 14, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Antonios K. Doufas, David F. Sanders, Matthew W. Holtcamp, Xuan Ye, Alexander I. Norman, Rohan A. Hule, Hasnain Rangwalla
  • Patent number: 10590212
    Abstract: This invention relates to new multimodal and/or broad molecular weight high density polyethylene polymers. The polymers may be made in a single reactor, preferably a gas phase reactor using a dual catalyst system comprising a pyridyldiamido transition metal compound, a metallocene compound, a support, and optionally an activator.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: March 17, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Antonios K. Doufas, David F. Sanders, Alexander I. Norman, Matthew W. Holtcamp, Keith R. Green, Rohan A. Hule, Derek W. Thurman
  • Patent number: 10563027
    Abstract: A method of forming a finished film comprising extruding a molten polyethylene comprising a diene terpolymer modifier through a die opening to form a film, wherein the diene-terpolymer modifier is a terpolymer comprising ethylene-derived units, C3 to C10 ?-olefin derived units, and diene-derived units; causing the film to progress in a direction away from the die opening; cooling the film at a distance from the die opening, the distance adjusted to allow relaxation of the molten polyethylene prior to solidification and/or crystallization upon cooling; and isolating a finished film therefrom. Desirably, the polyethylene is a linear low density polyethylene, and the die and cooling is suitable for forming a blown film.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: February 18, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jianya Cheng, Adriana S. Silva, Peijun Jiang, Wen Li, Alexander I. Norman
  • Patent number: 10562219
    Abstract: A method of forming a blown film comprising extruding a molten composition through a die opening to form a film; wherein the molten composition comprises at least one polyethylene and within the range from 0.10 wt % to 10 wt % of a cyclic-diene terpolymer by weight of the composition; causing the film to progress in a direction away from the die opening; cooling the film at a distance from the die opening, the distance adjusted to effect the properties of the film; and isolating a blown film therefrom.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: February 18, 2020
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Periagaram S. Ravishankar, Jianya Cheng, Adriana S. Silva, Wen Li, Abdelhadi Sahnoune, Arturo Leyva, Alexander I. Norman
  • Publication number: 20190135996
    Abstract: A method of forming a finished film comprising extruding a molten polyethylene comprising a diene terpolymer modifier through a die opening to form a film, wherein the diene-terpolymer modifier is a terpolymer comprising ethylene-derived units, C3 to C10 ?-olefin derived units, and diene-derived units; causing the film to progress in a direction away from the die opening; cooling the film at a distance from the die opening, the distance adjusted to allow relaxation of the molten polyethylene prior to solidification and/or crystallization upon cooling; and isolating a finished film therefrom. Desirably, the polyethylene is a linear low density polyethylene, and the die and cooling is suitable for forming a blown film.
    Type: Application
    Filed: August 3, 2018
    Publication date: May 9, 2019
    Inventors: Jianya Cheng, Adriana S. Silva, Peijun Jiang, Wen Li, Alexander I. Norman
  • Publication number: 20190134876
    Abstract: A method of forming a blown film comprising extruding a molten composition through a die opening to form a film; wherein the molten composition comprises at least one polyethylene and within the range from 0.10 wt % to 10 wt % of a cyclic-diene terpolymer by weight of the composition; causing the film to progress in a direction away from the die opening; cooling the film at a distance from the die opening, the distance adjusted to effect the properties of the film; and isolating a blown film therefrom.
    Type: Application
    Filed: August 24, 2018
    Publication date: May 9, 2019
    Inventors: Periagaram S. Ravishankar, Jianya Cheng, Adriana S. Silva, Wen Li, Abelhadi Sahnoune, Arturo Leyva, Alexander I. Norman
  • Publication number: 20190010314
    Abstract: A composite comprising a polyethylene and within a range from 1 wt % to 25 wt % of at least one cyclic-olefin copolymer by weight of the composition, where the polyethylene may have a density of at least 0.90 g/cm3, and where the cyclic-olefin copolymer has a glass transition temperature (Tg) of at least 30° C. Disclosed also is the feature of orienting the composite to form an oriented article, wherein the article comprises rods having an average length of at least 1 ?m, and at least 5 nm in average diameter.
    Type: Application
    Filed: April 27, 2018
    Publication date: January 10, 2019
    Inventors: Yong Yang, Alexander I. Norman, Andy H. Tsou, Kimari T.M. Slaughter, Bethany M. Weike, Dinara R. Sunagatullina
  • Patent number: 10124528
    Abstract: A method of forming a blown film comprising extruding a molten composition through a die opening to form a film; wherein the molten composition comprises at least one polyethylene and within the range from 0.10 wt % to 10 wt % of a cyclic-diene terpolymer by weight of the composition; causing the film to progress in a direction away from the die opening; cooling the film at a distance from the die opening, the distance adjusted to effect the properties of the film; and isolating a blown film therefrom.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: November 13, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Periagaram S. Ravishankar, Jianya Cheng, Adriana S. Silva, Wen Li, Abdelhadi Sahnoune, Arturo Leyva, Alexander I. Norman
  • Patent number: 10077344
    Abstract: A method of forming a finished film comprising extruding a molten polyethylene comprising a diene terpolymer modifier through a die opening to form a film, wherein the diene-terpolymer modifier is a terpolymer comprising ethylene-derived units, C3 to C10 ?-olefin derived units, and diene-derived units; causing the film to progress in a direction away from the die opening; cooling the film at a distance from the die opening, the distance adjusted to allow relaxation of the molten polyethylene prior to solidification and/or crystallization upon cooling; and isolating a finished film therefrom. Desirably, the polyethylene is a linear low density polyethylene, and the die and cooling is suitable for forming a blown film.
    Type: Grant
    Filed: May 14, 2015
    Date of Patent: September 18, 2018
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jianya Cheng, Adriana S. Silva, Peijun Jiang, Wen Li, Alexander I. Norman
  • Publication number: 20180134828
    Abstract: This invention relates to ethylene polymers obtained using a catalyst system comprising fluorided silica, alkylalumoxane activator and at least two metallocene catalyst compounds (a bridged monocyclopentadienyl group 4 transition metal compound and a biscyclopentadientyl group 4 transition metal compound), where the fluorided support has not been calcined at a temperature of 400° C. or more, and is preferably produced using a wet mixing method, such as an aqueous method. The ethylene polymers have: 1) at least 50 mol % ethylene; 2) a reversed comonomer index, mol %, (RCI,m) of 85 or more; 3) a Comonomer Distribution Ratio-2 (CDR-2,m) of the percent comonomer at the z average molecular weight divided by the percent comonomer at the weight average molecular weight plus the number average molecular weight divided by 2 ([% comonomer at Mz]/[% comonomer at ((Mw+Mn)/2)] as determined by GPC of 2.3 or more; and 4) a density of 0.91 g/cc or more.
    Type: Application
    Filed: April 19, 2016
    Publication date: May 17, 2018
    Inventors: Antonios K. DOUFAS, David F. SANDERS, Matthew W. HOLTCAMP, Xuan YE, Alexander I. NORMAN, Rohan A. HULE, Hasnain RANGWALLA
  • Publication number: 20180079845
    Abstract: This invention relates to new multimodal and/or broad molecular weight high density polyethylene polymers. The polymers may be made in a single reactor, preferably a gas phase reactor using a dual catalyst system comprising a pyridyldiamido transition metal compound, a metallocene compound, a support, and optionally an activator.
    Type: Application
    Filed: April 20, 2016
    Publication date: March 22, 2018
    Inventors: Antonios K. Doufas, David F. Sanders, Alexander I. Norman, Matthew W. Holtcamp, Keith R. Green, Rohan A. Hule, Derek W. Thurman
  • Publication number: 20180044514
    Abstract: Provided is a composition having 70 wt % to 90 wt % of a first propylene-olefin copolymer component having an ethylene content of 15 to 21 wt %; and 10 wt % to 30 wt % of a second propylene-olefin copolymer component having an ethylene content of 6 to 10 wt %; wherein the weight average molecular weight of the first component is 250,000 to 1,780,000 g/mol higher than the weight average molecular weight of the second component; wherein the reactivity ratio product of the first component is less than 0.75; wherein the reactivity ratio product of the second component is greater than or equal to 0.75.
    Type: Application
    Filed: July 17, 2017
    Publication date: February 15, 2018
    Inventors: Alexander I. Norman, Gregory K. Hall, John R. Hagadorn, Andy H. Tsou, Peijun Jiang, Ying Ying Sun, Sarah J. Mattler, Arturo Leyva
  • Publication number: 20180044513
    Abstract: Provided is a composition having 60 wt % to 95 wt % of a first propylene alpha-olefin copolymer component having a reactivity ratio product of less than 0.75 and a weight average molecular weight of greater than about 450,000 g/mol; and 5 wt % to 40 wt % of a second propylene alpha-olefin copolymer component having a reactivity ratio of greater than 1.5 and a weight average molecular weight of less than about 215,000 g/mol.
    Type: Application
    Filed: July 17, 2017
    Publication date: February 15, 2018
    Inventors: Andy H. Tsou, Alexander I. Norman, John R. Hagadorn, Gabor Kiss, Peijun Jiang, Sarah J. Mattler
  • Publication number: 20170028605
    Abstract: A method of forming a blown film comprising extruding a molten composition through a die opening to form a film; wherein the molten composition comprises at least one polyethylene and within the range from 0.10 wt % to 10 wt % of a cyclic-diene terpolymer by weight of the composition; causing the film to progress in a direction away from the die opening; cooling the film at a distance from the die opening, the distance adjusted to effect the properties of the film; and isolating a blown film therefrom.
    Type: Application
    Filed: May 14, 2015
    Publication date: February 2, 2017
    Inventors: Periagaram S. Ravishankar, Jianya Cheng, Adriana S. Silva, Wen Li, Abdelhadi Sahnoune, Arturo Leyva, Alexander I. Norman
  • Publication number: 20170029584
    Abstract: A method of forming a finished film comprising extruding a molten polyethylene comprising a diene terpolymer modifier through a die opening to form a film, wherein the diene-terpolymer modifier is a terpolymer comprising ethylene-derived units, C3 to C10 ?-olefin derived units, and diene-derived units; causing the film to progress in a direction away from the die opening; cooling the film at a distance from the die opening, the distance adjusted to allow relaxation of the molten polyethylene prior to solidification and/or crystallization upon cooling; and isolating a finished film therefrom. Desirably, the polyethylene is a linear low density polyethylene, and the die and cooling is suitable for forming a blown film.
    Type: Application
    Filed: May 14, 2015
    Publication date: February 2, 2017
    Applicant: ExxonMobil Chemcial Company-Law Technology
    Inventors: Jianya Cheng, Adriana S. Silva, Peijun Jiang, Wen Li, Alexander I. Norman