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).
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Publication number: 20240101725Abstract: 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: ApplicationFiled: August 21, 2019Publication date: March 28, 2024Inventors: Chuan He, Timothy R. Lynn, Robert N. Reib, Bo Liu
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Patent number: 11649305Abstract: 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: GrantFiled: July 29, 2019Date of Patent: May 16, 2023Assignee: Univation Technologies, LLCInventors: Bo Liu, Yi Zhang, Ayush A. Bafna, François Alexandre, Robert N. Reib
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Patent number: 11421051Abstract: 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: GrantFiled: December 13, 2018Date of Patent: August 23, 2022Assignee: DOW GLOBAL TECHNOLOGIES LLCInventors: Linfeng Chen, David M. Pearson, Michael W. Tilston, Mridula Kapur, Robert N. Reib, Stephanie M. Whited
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Publication number: 20220235155Abstract: 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: ApplicationFiled: April 14, 2022Publication date: July 28, 2022Inventors: Linfeng Chen, David M. Pearson, Michael W. Tilston, Mridula Kapur, Robert N. Reib, Stephanie M. Whited
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Publication number: 20210261703Abstract: 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: ApplicationFiled: July 29, 2019Publication date: August 26, 2021Inventors: Bo Liu, Yi Zhang, Ayush A. Bafna, François Alexandre, Robert N. Reib
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Publication number: 20210179753Abstract: 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: ApplicationFiled: July 29, 2019Publication date: June 17, 2021Inventors: Bo Liu, Yi Zhang, Ayush A. Bafna, François Alexandre, Robert N. Reib
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Publication number: 20210079129Abstract: 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: ApplicationFiled: December 13, 2018Publication date: March 18, 2021Inventors: Linfeng Chen, David M. Pearson, Michael W. Tilston, Mridula Babli Kapur, Robert N. Reib, Stephanie M. Whited
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Publication number: 20210079130Abstract: 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: ApplicationFiled: December 13, 2018Publication date: March 18, 2021Inventors: Linfeng Chen, David M. Pearson, Micchael W. Tilston, Mridula Babli Kapur, Robert N. Reib, Stephanie M. Whited
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Patent number: 9765164Abstract: 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: GrantFiled: June 27, 2014Date of Patent: September 19, 2017Assignee: Dow Global Technologies LLCInventors: David W. Kababik, Kathleen E. Pletcher, Jian Wang, Jason C. Brodil, Troy M. Tambling, Robert N. Reib, Mridula Kapur
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Publication number: 20150376311Abstract: 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: ApplicationFiled: June 27, 2014Publication date: December 31, 2015Inventors: David W. Kababik, Kathleen E. Pletcher, Jian Wang, Jason C. Brodil, Troy M. Tambling, Robert N. Reib, Mridula Kapur
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Publication number: 20150284523Abstract: 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: ApplicationFiled: November 19, 2013Publication date: October 8, 2015Inventors: Mridula Kapur, Jian Wang, Yijian Lin, Troy M. Tambling, Robert N. Reib
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Publication number: 20150259445Abstract: 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: ApplicationFiled: October 1, 2013Publication date: September 17, 2015Applicant: Dow Global Technologies LLCInventors: Mridula Kapur, Jian Wang, Ayush A. Bafna, Troy M. Tambling, Robert N. Reib
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Publication number: 20150240000Abstract: 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: ApplicationFiled: October 1, 2013Publication date: August 27, 2015Inventors: Jian Wang, Mridula Kapur, Yijian Lin, Lawrence J. Effler, JR., Troy M. Tambling, Robert N. Reib
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Publication number: 20150232711Abstract: 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: ApplicationFiled: October 1, 2013Publication date: August 20, 2015Inventors: Mridula Kapur, Jian Wang, Gagan Saini, Mustafa Bilgen, Troy M. Tambling, Robert N. Reib
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Patent number: 7393910Abstract: 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: GrantFiled: August 18, 2004Date of Patent: July 1, 2008Assignee: Dow Global Technologies Inc.Inventors: Richard E. Campbell, Jr., Linfeng Chen, Roger B. Painter, Robert N. Reib, Michael W. Tilston