Patents by Inventor Robert N. Reib

Robert N. Reib 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).

  • Publication number: 20240101725
    Abstract: A method of independently changing a melt rheology property value of a bimodal polyethylene polymer being made using a bimodal catalyst system in a single gas phase polymerization reactor. The method comprises process conditions comprising alkane(s) in the reactor. The method comprises a bimodal catalyst system that is characterized by an inverse response to alkane(s) concentration. The method comprises changing concentration of the alkane(s) in the reactor by an amount sufficient to effect a measurable change in the melt rheology property value; wherein the bimodal catalyst system is characterized by an inverse response to alkane(s) concentration such that when the alkane(s) concentration is increased, the melt rheology property value of the resulting bimodal polyethylene polymer is decreased, and when the alkane(s) concentration is decreased, the melt rheology property value of the resulting bimodal polyethylene polymer is increased.
    Type: Application
    Filed: August 21, 2019
    Publication date: March 28, 2024
    Inventors: Chuan He, Timothy R. Lynn, Robert N. Reib, Bo Liu
  • Patent number: 11649305
    Abstract: A unimodal ethylene-co-1-hexene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of melt elasticity and complex viscosity ratio (shear thinning)properties. A blown film consisting essentially of the unimodal ethylene-co-1-hexene copolymer. A method of synthesizing the unimodal ethylene-co-1-hexene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-hexene copolymer.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: May 16, 2023
    Assignee: Univation Technologies, LLC
    Inventors: Bo Liu, Yi Zhang, Ayush A. Bafna, François Alexandre, Robert N. Reib
  • Patent number: 11421051
    Abstract: A zirconocene-titanocene catalyst system comprising a zirconocene catalyst and a titanocene catalyst; polyolefins; methods of making and using same; and articles containing same.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: August 23, 2022
    Assignee: DOW GLOBAL TECHNOLOGIES LLC
    Inventors: Linfeng Chen, David M. Pearson, Michael W. Tilston, Mridula Kapur, Robert N. Reib, Stephanie M. Whited
  • Publication number: 20220235155
    Abstract: A hafnocene-titanocene catalyst system comprising a hafnocene catalyst and a titanocene catalyst; polyolefins; methods of making and using same; and articles containing same.
    Type: Application
    Filed: April 14, 2022
    Publication date: July 28, 2022
    Inventors: Linfeng Chen, David M. Pearson, Michael W. Tilston, Mridula Kapur, Robert N. Reib, Stephanie M. Whited
  • Publication number: 20210261703
    Abstract: A unimodal ethylene-co-1-hexene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of melt elasticity and complex viscosity ratio (shear thinning) properties. A blown film consisting essentially of the unimodal ethylene-co-1-hexene copolymer. A method of synthesizing the unimodal ethylene-co-1-hexene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-hexene copolymer.
    Type: Application
    Filed: July 29, 2019
    Publication date: August 26, 2021
    Inventors: Bo Liu, Yi Zhang, Ayush A. Bafna, François Alexandre, Robert N. Reib
  • Publication number: 20210179753
    Abstract: A unimodal ethylene-co-1-hexene copolymer that, when in melted form at 190 degrees Celsius, is characterized by a unique melt property space defined by combination of melt elasticity and complex viscosity ratio (shear thinning) properties. A blown film consisting essentially of the unimodal ethylene-co-1-hexene copolymer. A method of synthesizing the unimodal ethylene-co-hexene copolymer. A method of making the blown film. A manufactured article comprising the unimodal ethylene-co-1-hexene copolymer.
    Type: Application
    Filed: July 29, 2019
    Publication date: June 17, 2021
    Inventors: Bo Liu, Yi Zhang, Ayush A. Bafna, François Alexandre, Robert N. Reib
  • Publication number: 20210079129
    Abstract: A hafnocene-titanocene catalyst system comprising a hafnocene catalyst and a titanocene catalyst; polyolefins; methods of making and using same; and articles containing same.
    Type: Application
    Filed: December 13, 2018
    Publication date: March 18, 2021
    Inventors: Linfeng Chen, David M. Pearson, Michael W. Tilston, Mridula Babli Kapur, Robert N. Reib, Stephanie M. Whited
  • Publication number: 20210079130
    Abstract: A zirconocene-titanocene catalyst system comprising a zirconocene catalyst and a titanocene catalyst; polyolefins; methods of making and using same; and articles containing same.
    Type: Application
    Filed: December 13, 2018
    Publication date: March 18, 2021
    Inventors: Linfeng Chen, David M. Pearson, Micchael W. Tilston, Mridula Babli Kapur, Robert N. Reib, Stephanie M. Whited
  • Patent number: 9765164
    Abstract: A linear low density polyethylene composition suitable for injection molding applications comprising less than or equal to 100 percent by weight of the units derived from ethylene, less than 35 percent by weight of units derived from one or more ?-olefin comonomers, and characterized by its density, molecular weight distribution (Mw/Mn), a melt index (I2), a molecular weight distribution (Mz/Mw), vinyl unsaturation, and zero shear viscosity ratio (ZSVR). The linear low density polyethylene composition exhibits low hexane extractable levels.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: September 19, 2017
    Assignee: Dow Global Technologies LLC
    Inventors: David W. Kababik, Kathleen E. Pletcher, Jian Wang, Jason C. Brodil, Troy M. Tambling, Robert N. Reib, Mridula Kapur
  • Publication number: 20150376311
    Abstract: A linear low density polyethylene composition suitable for injection molding applications comprising less than or equal to 100 percent by weight of the units derived from ethylene, less than 35 percent by weight of units derived from one or more ?-olefin comonomers, and characterized by its density, molecular weight distribution (Mw/Mn), a melt index (I2), a molecular weight distribution (Mz/Mw), vinyl unsaturation, and zero shear viscosity ratio (ZSVR). The linear low density polyethylene composition exhibits low hexane extractable levels.
    Type: Application
    Filed: June 27, 2014
    Publication date: December 31, 2015
    Inventors: David W. Kababik, Kathleen E. Pletcher, Jian Wang, Jason C. Brodil, Troy M. Tambling, Robert N. Reib, Mridula Kapur
  • Publication number: 20150284523
    Abstract: The instant invention provides a polyethylene composition suitable for film applications and film made therefrom. The linear low density polyethylene composition suitable for film applications according to the present invention comprises: less than or equal to 100 percent by weight of the units derived from ethylene; and less than 35 percent by weight of units derived from one or more ?-olefin comonomers; wherein said linear low density polyethylene composition has a density in the range of from 0.890 to 0.915 g/cm3, a molecular weight distribution (Mw/Mn) in the range of from 2.5 to 4.5, a melt index (12) in the range of from 2 to 10 g/10 minutes, a molecular weight distribution (Mz/Mw) in the range of from 2.2 to 3, vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of said composition, and a zero shear viscosity ratio (ZSVR) in the range from 1 to 1.2.
    Type: Application
    Filed: November 19, 2013
    Publication date: October 8, 2015
    Inventors: Mridula Kapur, Jian Wang, Yijian Lin, Troy M. Tambling, Robert N. Reib
  • Publication number: 20150259445
    Abstract: The instant invention provides a linear low density polyethylene composition suitable for film applications, and films made therefrom. The linear low density polyethylene composition suitable for film applications comprises: (a) less than or equal to 100 percent by weight of the units derived from ethylene; and (b) less than 35 percent by weight of units derived from one or more ?-olefin comonomers; wherein said linear low density polyethylene composition has a density in the range of 0.905 to 0.925 g/cm3, a molecular weight distribution (Mw/Mn) in the range of 2.5 to 4.5, a melt index (I2) in the range of 0.1 to 3 g/10 minutes, a molecular weight distribution (Mz/Mw) in the range of from 2.2 to 3, vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of said composition, and a zero shear viscosity ratio (ZSVR) in the range from 1 to 1.2.
    Type: Application
    Filed: October 1, 2013
    Publication date: September 17, 2015
    Applicant: Dow Global Technologies LLC
    Inventors: Mridula Kapur, Jian Wang, Ayush A. Bafna, Troy M. Tambling, Robert N. Reib
  • Publication number: 20150240000
    Abstract: The instant invention provides a polyethylene composition suitable for stretch film applications and, method of producing the same, and cast film made therefrom. The linear low density polyethylene composition suitable for stretch film applications according to the present invention comprises: less than or equal to 100 percent by weight of the units derived from ethylene; and less than 35 percent by weight of units derived from one or more ?-olefin comonomers; wherein said linear low density polyethylene composition has a density in the range of from 0.900 to 0.930 g/cm3, a molecular weight distribution (Mw/Mn) in the range of from 2.5 to 4.5, a melt index (I2) in the range of from 0.3 to 10 g/10 minutes, a molecular weight distribution (Mz/Mw) in the range of from 2.2 to 3, vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of said composition, and a zero shear viscosity ratio (ZSVR) in the range from 1 to 1.2.
    Type: Application
    Filed: October 1, 2013
    Publication date: August 27, 2015
    Inventors: Jian Wang, Mridula Kapur, Yijian Lin, Lawrence J. Effler, JR., Troy M. Tambling, Robert N. Reib
  • Publication number: 20150232711
    Abstract: The instant invention provides a sealant composition, method of producing the same, film layers and multilayer structures made therefrom. The linear low density polyethylene composition suitable for sealant applications according to the present invention comprises: less than or equal to 100 percent by weight of the units derived from ethylene; less than 35 percent by weight of units derived from one or more ?-olefin comonomers; wherein said linear low density polyethylene composition has a density in the range of 0.900 to 0.920 g/cm3, a molecular weight distribution (Mw/Mn) in the range of 2.5 to 4.5, a melt index (I2) in the range of 0.5 to 3 g/10 minutes, a molecular weight distribution (Mz/Mw) in the range of from 2.2 to 3, vinyl unsaturation of less than 0.1 vinyls per one thousand carbon atoms present in the backbone of said composition, and a zero shear viscosity ratio (ZSVR) in the range from 1.0 to 1.2.
    Type: Application
    Filed: October 1, 2013
    Publication date: August 20, 2015
    Inventors: Mridula Kapur, Jian Wang, Gagan Saini, Mustafa Bilgen, Troy M. Tambling, Robert N. Reib
  • Patent number: 7393910
    Abstract: A process for the polymerization of olefin monomers comprising contacting ethylene or a mixture of ethylene and one or more C4-8 ? olefins with a catalyst composition comprising one or more Group 3-10 transition metal containing, Ziegler-Natta, procatalyst compounds; one or more alkylaluminum cocatalyts; and one or more polymerization control agents, said process being characterized in that at least one such polymerization control agent is an alkyl or aryl, ester of an aliphatic or aromatic (poly)carboxylic acid optionally containing one or more substituents comprising a Group 13, 14, 15, or 16 heteroatom.
    Type: Grant
    Filed: August 18, 2004
    Date of Patent: July 1, 2008
    Assignee: Dow Global Technologies Inc.
    Inventors: Richard E. Campbell, Jr., Linfeng Chen, Roger B. Painter, Robert N. Reib, Michael W. Tilston