Patents by Inventor Rohan A. Hule
Rohan A. Hule 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: 11629209Abstract: This invention relates to a catalyst system including the reaction product of a support (such as a fluorided silica support that preferably has not been calcined at a temperature of 400° C. or more), an activator and at least two different transition metal catalyst compounds; methods of making such catalyst systems, polymerization processes using such catalyst systems and polymers made therefrom.Type: GrantFiled: May 18, 2022Date of Patent: April 18, 2023Assignee: ExxonMobil Chemical Patents Inc.Inventors: Rohan A. Hule, Antonios K. Doufas, Derek W. Thurman, Crisita Carmen H. Atienza, Matthew W. Holtcamp, David F. Sanders, Matthew S. Bedoya
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Publication number: 20220289883Abstract: This invention relates to a catalyst system including the reaction product of a support (such as a fluorided silica support that preferably has not been calcined at a temperature of 400° C. or more), an activator and at least two different transition metal catalyst compounds; methods of making such catalyst systems, polymerization processes using such catalyst systems and polymers made therefrom.Type: ApplicationFiled: May 18, 2022Publication date: September 15, 2022Inventors: Rohan A. HULE, Antonios K. DOUFAS, Derek W. THURMAN, Crisita Carmen H. ATIENZA, Matthew W. HOLTCAMP, David F. SANDERS, Matthew S. BEDOYA
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Patent number: 11370860Abstract: This invention relates to a catalyst system including the reaction product of a support (such as a fluorided silica support that preferably has not been calcined at a temperature of 400° C. or more), an activator and at least two different transition metal catalyst compounds; methods of making such catalyst systems, polymerization processes using such catalyst systems and polymers made therefrom.Type: GrantFiled: October 4, 2017Date of Patent: June 28, 2022Assignee: ExxonMobil Chemical Patents Inc.Inventors: Rohan A. Hule, Antonios K. Doufas, Derek W. Thurman, Crisita Carmen H. Atienza, Matthew W. Holtcamp, David F. Sanders, Matthew S. Bedoya
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Patent number: 11104784Abstract: Disclosed is a thermoplastic polyolefin composition useful in automotive components comprising at least a polypropylene having a melting point temperature (Tm) of greater than 130° C. and a melt flow rate (230° C./2.16 kg) within the range from 10 g/10 min to 80 g/10 min; an amorphous ethylene-propylene copolymer comprising within the range from 40 wt % to 80 wt % ethylene derived units and having a melt flow rate (230° C./2.16 kg) within the range from 0.1 g/10 min to 20 g/10 min; and a propylene-based elastomer having within the range from 5 to 25 wt % ethylene derived units and having a Tm of less than 110° C. The composition only partially breaks or there is no break at ?29° C. (ASTM D256) with Notched Izod Force of between 10 to 40 ft-lb/in2 at 22° C. (533 to 2,132 J/m2), and between 1.0 to 12 ft-lb/in2 at ?29° C. (53 to 636 J/m2).Type: GrantFiled: February 18, 2020Date of Patent: August 31, 2021Assignee: ExxonMobil Chemical Patents Inc.Inventors: Sudhin Datta, Xin Chen, Abdul M. Jangda, Rohan A. Hule, Jan Kalfus
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Patent number: 10927203Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units and from 0 to 35 wt % of C3-C12 olefin comonomer derived units, based upon the total weight of the polyethylene composition are provided. The polyethylene compositions have a) an RCI,m of 100 kg/mol or greater and one or both of: b) a Tw1-Tw2 value of from ?16 to ?38° C.; and c) an Mw1/Mw2 value of at least 0.9. The polyethylene compositions may be used to manufacture articles such as films.Type: GrantFiled: October 5, 2018Date of Patent: February 23, 2021Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ching-Tai Lue, Adriana S. Silva, Matthew W. Holtcamp, David F. Sanders, Ryan W. Impelman, Richard E. Pequeno, Charles J. Harlan, Xuan Ye, Dongming Li, Rohan A. Hule, Matthew S. Bedoya
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Patent number: 10766981Abstract: Bimodal polypropylene compositions and a process to form melt blended bimodal polypropylene compositions comprising combining at least two polypropylenes in at least a two-pass process, and forming a bimodal polypropylene composition having a Flexural Modulus (190° C., 1% secant) of at least 1700 MPa, as well as one or more other selected properties. These compositions are suitable for thermoformed articles and injection molded articles, any of which may be foamed.Type: GrantFiled: August 4, 2015Date of Patent: September 8, 2020Assignee: ExxonMobil Chemical Patents Inc.Inventors: Rohan A. Hule, Sudhin Datta, Yi Ping Ni
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Publication number: 20200239677Abstract: Disclosed is a thermoplastic polyolefin composition useful in automotive components comprising at least a polypropylene having a melting point temperature (Tm) of greater than 130° C. and a melt flow rate (230° C./2.16 kg) within the range from 10 g/10 min to 80 g/10 min; an amorphous ethylene-propylene copolymer comprising within the range from 40 wt % to 80 wt % ethylene derived units and having a melt flow rate (230° C./2.16 kg) within the range from 0.1 g/10 min to 20 g/10 min; and a propylene-based elastomer having within the range from 5 to 25 wt % ethylene derived units and having a Tm of less than 110° C. The composition only partially breaks or there is no break at ?29° C. (ASTM D256) with Notched Izod Force of between 10 to 40 ft-lb/in2 at 22° C. (533 to 2,132 J/m2), and between 1.0 to 12 ft-lb/in2 at ?29° C. (53 to 636 J/m2).Type: ApplicationFiled: February 18, 2020Publication date: July 30, 2020Inventors: Sudhin Datta, Xin Chen, Abdul M. Jangda, Rohan A. Hule, Jan Kalfus
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Patent number: 10647841Abstract: Disclosed is a thermoplastic polyolefin composition useful in automotive components comprising at least a polypropylene having a melting point temperature (Tm) of greater than 130° C. and a melt flow rate (230° C./2.16 kg) within the range from 10 g/10 min to 80 g/10 min; an amorphous ethylene-propylene copolymer comprising within the range from 40 wt % to 80 wt % ethylene derived units and having a melt flow rate (230° C./2.16 kg) within the range from 0.1 g/10 min to 20 g/10 min; and a propylene-based elastomer having within the range from 5 to 25 wt % ethylene derived units and having a Tm of less than 110° C. The composition only partially breaks or there is no break at ?29° C. (ASTM D256) with Notched Izod Force of between 10 to 40 ft-lb/in2 at 22° C. (533 to 2,132 J/m2), and between 1.0 to 12 ft-lb/in2 at ?29° C. (53 to 636 J/m2).Type: GrantFiled: August 21, 2015Date of Patent: May 12, 2020Assignee: ExxonMobil Chemical Patents Inc.Inventors: Sudhin Datta, Xin Chen, Abdul M. Jangda, Rohan A. Hule, Jan Kalfus
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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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Publication number: 20200048382Abstract: Disclosed herein is a catalyst system including a first catalyst compound represented by Formula (I): and a second catalyst compound that is a bridged or unbridged metallocene. M is a group 4 metal. X1 and X2 are independently a univalent C1-C20 hydrocarbyl, C1-C20 substituted hydrocarbyl, a heteroatom or a heteroatom-containing group, or X1 and X2 join together to form a C4-C62 cyclic or polycyclic ring structure. R1, R2, R3, R4, R5, R6, R7, R8, R9, and R10 is independently hydrogen, C1-C40 hydrocarbyl, C1-C40 substituted hydrocarbyl, a heteroatom or a heteroatom-containing group, or two or more of R1, R2, R3, R4, R5, R6, R7, R8, R9, or R10 are joined together to form a C4-C62 cyclic or polycyclic ring structure, or a combination thereof. Q is a neutral donor group. Methods of polymerizing with the catalyst system to produce polyolefin polymers are also disclosed.Type: ApplicationFiled: October 4, 2017Publication date: February 13, 2020Inventors: Matthew W. Holtcamp, Crisita Carmen H. Atienza, Charles J. Harlan, Xuan Ye, Matthew S. Bedoya, David F. Sanders, David A. Cano, Subramaniam Kuppuswamy, Michelle E. Titone, Ching-Tai Lue, Laughlin G. McCullough, Rohan A. Hule
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Publication number: 20200048383Abstract: This invention relates to a catalyst system including the reaction product of a support (such as a fluorided silica support that preferably has not been calcined at a temperature of 400° C. or more), an activator and at least two different transition metal catalyst compounds; methods of making such catalyst systems, polymerization processes using such catalyst systems and polymers made therefrom.Type: ApplicationFiled: October 4, 2017Publication date: February 13, 2020Inventors: Rohan A. Hule, Antonios K. Doufas, Derek W. Thurman, Crlsita Carmen H. Atienza, Matthew W. Hoitcamp, David F. Sanders, Matthew S. Bedoya
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Patent number: 10513601Abstract: This invention relates to a polyolefin composition with (a) 80 to 90 wt % of an amorphous ethylene-propylene copolymer having either no crystallinity or crystallinity derived from ethylene, having about 30 wt % or more units derived from ethylene; (b) 5 to 15 wt % of a semi-crystalline ethylene-propylene copolymer having substantial crystallinity derived from ethylene and having 70 wt % or more units derived from ethylene; and (c) 1 to 5 wt % of a propylene-based elastomer having within the range from 5 to 25 wt % ethylene derived units and having a melting point temperature of less than 110° C. and a Mw/Mn within the range from 2.0 to 4.0.Type: GrantFiled: November 17, 2017Date of Patent: December 24, 2019Assignee: ExxonMobil Chemical Patents Inc.Inventors: Xin Chen, Sudhin Datta, Rohan A. Hule
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Publication number: 20190144576Abstract: Polyethylene compositions including at least 65 wt % ethylene derived units, based upon the total weight of the polyethylene composition, are provided.Type: ApplicationFiled: October 5, 2018Publication date: May 16, 2019Inventors: Ching-Tai Lue, Adriana S. Silva, Matthew W. Holtcamp, David F. Sanders, Ryan W. Impelman, Richard E. Pequeno, Charles J. Harlan, Xuan Ye, Dongming Li, Rohan A. Hule, Matthew S. Bedoya
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Patent number: 10266685Abstract: The present invention relates to a bimodal polypropylene composition comprising a blend of a HMW polypropylene component and a LMW polypropylene component, where the high molecular weight (HMW) component of the bimodal composition has a z-average molecular weight Mz of more than 400,000 g/mole, and a process to make such composition. The composition is suitable for thermoformed articles and injection molded articles.Type: GrantFiled: June 20, 2017Date of Patent: April 23, 2019Assignee: ExxonMobil Chemical Patents Inc.Inventors: Yi Ping Ni, Rohan A. Hule, Sudhin Datta
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Publication number: 20180258203Abstract: Bimodal polypropylene compositions and a process to form melt blended bimodal polypropylene compositions comprising combining at least two polypropylenes in at least a two-pass process, and forming a bimodal polypropylene composition having a Flexural Modulus (190° C., 1% secant) of at least 1700 MPa, as well as one or more other selected properties. These compositions are suitable for thermoformed articles and injection molded articles, any of which may be foamed.Type: ApplicationFiled: August 4, 2015Publication date: September 13, 2018Inventors: Rohan A. Hule, Sudhin Datta, Yi Ping Ni
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Publication number: 20180186986Abstract: This invention relates to a polyolefin composition with (a) 80 to 90 wt % of an amorphous ethylene-propylene copolymer having either no crystallinity or crystallinity derived from ethylene, having about 30 wt % or more units derived from ethylene; (b) 5 to 15 wt % of a semi-crystalline ethylene-propylene copolymer having substantial crystallinity derived from ethylene and having 70 wt % or more units derived from ethylene; and (c) 1 to 5 wt % of a propylene-based elastomer having within the range from 5 to 25 wt % ethylene derived units and having a melting point temperature of less than 110° C. and a Mw/Mn within the range from 2.0 to 4.0.Type: ApplicationFiled: November 17, 2017Publication date: July 5, 2018Inventors: Xin Chen, Sudhin Datta, Rohan A. Hule
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Patent number: 9994658Abstract: This invention relates to a process to polymerize olefins comprising: i) contacting one or more olefins with a catalyst system comprising: 1) a support comprising an organoaluminum treated layered silicate and an inorganic oxide; and 2) a bisphenolate compound; and ii) obtaining olefin polymer having high molecular weight and layered silicate dispersed therein. Preferably the support is in the form of spheroidal particles.Type: GrantFiled: August 19, 2016Date of Patent: June 12, 2018Assignee: ExxonMobil Chemical Patents Inc.Inventors: Crisita Carmen H. Atienza, Matthew W. Holtcamp, Xuan Ye, Gregory S. Day, David A. Cano, Machteld M. W. Mertens, Gerardo J. Majano Sanchez, Rohan A. Hule
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Patent number: 9982067Abstract: This invention relates to a process to polymerize olefins comprising: i) contacting one or more olefins with a catalyst system comprising: 1) a support comprising an organoaluminum treated layered silicate and an inorganic oxide; and 2) a pyridyldiamido compound; and ii) obtaining olefin polymer having high molecular weight and layered silicate dispersed therein. Preferably the support is in the form of spheroidal particles.Type: GrantFiled: August 17, 2016Date of Patent: May 29, 2018Assignee: ExxonMobil Chemical Patents Inc.Inventors: Matthew W. Holtcamp, John R. Hagadorn, Gregory S. Day, Machteld M. W. Mertens, Gerardo J. Majano Sanchez, Rohan A. Hule
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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