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).
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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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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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Patent number: 10858504Abstract: 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: GrantFiled: April 27, 2018Date of Patent: December 8, 2020Assignee: ExxonMobil Chemical Patents Inc.Inventors: Yong Yang, Alexander I. Norman, Andy H. Tsou, Kimari T. M. Slaughter, Bethany M. Welke, Dinara R. Sunagatullina
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Patent number: 10633527Abstract: 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: GrantFiled: July 17, 2017Date of Patent: April 28, 2020Assignee: 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
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Patent number: 10633526Abstract: 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: GrantFiled: July 17, 2017Date of Patent: April 28, 2020Assignee: ExxonMobil Chemical Patents Inc.Inventors: Andy H. Tsou, Alexander I. Norman, John R. Hagadorn, Gabor Kiss, Peijun Jiang, Sarah J. Mattler
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Patent number: 10618989Abstract: 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: GrantFiled: April 19, 2016Date of Patent: April 14, 2020Assignee: ExxonMobil Chemical Patents Inc.Inventors: Antonios K. Doufas, David F. Sanders, Matthew W. Holtcamp, Xuan Ye, Alexander I. Norman, Rohan A. Hule, Hasnain Rangwalla
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Patent number: 10590212Abstract: 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: GrantFiled: April 20, 2016Date of Patent: March 17, 2020Assignee: 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
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Patent number: 10563027Abstract: 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: GrantFiled: August 3, 2018Date of Patent: February 18, 2020Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jianya Cheng, Adriana S. Silva, Peijun Jiang, Wen Li, Alexander I. Norman
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Patent number: 10562219Abstract: 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: GrantFiled: August 24, 2018Date of Patent: February 18, 2020Assignee: ExxonMobil Chemical Patents Inc.Inventors: Periagaram S. Ravishankar, Jianya Cheng, Adriana S. Silva, Wen Li, Abdelhadi Sahnoune, Arturo Leyva, Alexander I. Norman
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Publication number: 20190135996Abstract: 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: ApplicationFiled: August 3, 2018Publication date: May 9, 2019Inventors: Jianya Cheng, Adriana S. Silva, Peijun Jiang, Wen Li, Alexander I. Norman
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Publication number: 20190134876Abstract: 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: ApplicationFiled: August 24, 2018Publication date: May 9, 2019Inventors: Periagaram S. Ravishankar, Jianya Cheng, Adriana S. Silva, Wen Li, Abelhadi Sahnoune, Arturo Leyva, Alexander I. Norman
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Publication number: 20190010314Abstract: 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: ApplicationFiled: April 27, 2018Publication date: January 10, 2019Inventors: Yong Yang, Alexander I. Norman, Andy H. Tsou, Kimari T.M. Slaughter, Bethany M. Weike, Dinara R. Sunagatullina
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Patent number: 10124528Abstract: 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: GrantFiled: May 14, 2015Date of Patent: November 13, 2018Assignee: ExxonMobil Chemical Patents Inc.Inventors: Periagaram S. Ravishankar, Jianya Cheng, Adriana S. Silva, Wen Li, Abdelhadi Sahnoune, Arturo Leyva, Alexander I. Norman
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Patent number: 10077344Abstract: 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: GrantFiled: May 14, 2015Date of Patent: September 18, 2018Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jianya Cheng, Adriana S. Silva, Peijun Jiang, Wen Li, Alexander I. Norman
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Publication number: 20180134828Abstract: 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: ApplicationFiled: April 19, 2016Publication date: May 17, 2018Inventors: Antonios K. DOUFAS, David F. SANDERS, Matthew W. HOLTCAMP, Xuan YE, Alexander I. NORMAN, Rohan A. HULE, Hasnain RANGWALLA
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Publication number: 20180079845Abstract: 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: ApplicationFiled: April 20, 2016Publication date: March 22, 2018Inventors: Antonios K. Doufas, David F. Sanders, Alexander I. Norman, Matthew W. Holtcamp, Keith R. Green, Rohan A. Hule, Derek W. Thurman
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Publication number: 20180044514Abstract: 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: ApplicationFiled: July 17, 2017Publication date: February 15, 2018Inventors: Alexander I. Norman, Gregory K. Hall, John R. Hagadorn, Andy H. Tsou, Peijun Jiang, Ying Ying Sun, Sarah J. Mattler, Arturo Leyva
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Publication number: 20180044513Abstract: 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: ApplicationFiled: July 17, 2017Publication date: February 15, 2018Inventors: Andy H. Tsou, Alexander I. Norman, John R. Hagadorn, Gabor Kiss, Peijun Jiang, Sarah J. Mattler
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Publication number: 20170028605Abstract: 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: ApplicationFiled: May 14, 2015Publication date: February 2, 2017Inventors: Periagaram S. Ravishankar, Jianya Cheng, Adriana S. Silva, Wen Li, Abdelhadi Sahnoune, Arturo Leyva, Alexander I. Norman
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Publication number: 20170029584Abstract: 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: ApplicationFiled: May 14, 2015Publication date: February 2, 2017Applicant: ExxonMobil Chemcial Company-Law TechnologyInventors: Jianya Cheng, Adriana S. Silva, Peijun Jiang, Wen Li, Alexander I. Norman