Patents by Inventor Pradeep Jain
Pradeep Jain 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: 20240059876Abstract: Irradiation of low-density polyethylene resins with an electron beam produces modified polyethylene resins that have significantly improved melt strength and retain useful melt-index and have few cross-linked gels, if the starting LDPE resin and the level of irradiation are properly selected.Type: ApplicationFiled: February 21, 2022Publication date: February 22, 2024Inventors: Yifan Dong, Santosh S. Bawiskar, Teresa P. Karjala, Pradeep Jain, Lori L. Kardos, Michael B. Biscoglio, John P. O'brien, Daniel W. Baugh, III
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Patent number: 11873393Abstract: A bimodal ethylene-based polymer, including a high density fraction (HDF) from 3.0% to 25.0%, wherein the high density fraction is measured by crystallization elution fractionation (CEF) integration at temperatures from 93° C. to 119° C., an I10/I2 ratio from 5.5 to 7.5, wherein I2 is the melt index when measured according to ASTM D 1238 at a load of 2.16 kg and temperature of 190° C. and I10 is the melt index when measured according to ASTM D 1238 at a load of 10 kg and temperature of 190° C., and a short chain branching distribution (SCBD) less than or equal to 10° C., wherein the short chain branching distribution is measured by CEF full width at half height.Type: GrantFiled: June 13, 2019Date of Patent: January 16, 2024Assignee: Dow Global Technologies LLCInventors: Kyle E. Hart, Mehmet Demirors, Timothy W. Gambrel, Philip P. Fontaine, Pradeep Jain
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Patent number: 11814456Abstract: A method of producing bimodal ethylene-based polymer includes reacting ethylene monomer and C3-C12 ?-olefin comonomer in the presence of a first catalyst in an agitated reactor to produce a first polymer fraction, and outputting effluent from the agitated reactor. A second catalyst is added to the effluent downstream of the agitated reactor and upstream from a non-agitated reactor, the second catalyst facilitates production of a second polymer fraction having a density and melt index (I2) different from the first polymer fraction. The second catalyst and effluent are mixed in at least one mixer. The second catalyst, second polymer fraction, and the first polymer fraction are passed to the non-agitated reactor; and additional ethylene monomer, additional C3-C12 ?-olefin comonomer, and solvent are passed to the non-agitated reactor to produce more second polymer fraction and thereby the bimodal ethylene-based polymer.Type: GrantFiled: June 13, 2019Date of Patent: November 14, 2023Assignee: Dow Global Technologies LLCInventors: Timothy W. Gambrel, Curvel Hypolite, Daniel S. Rynearson, Michael J. Zogg, Jr., Kyle E. Hart, Michael D. Turner, Jorge Rubalcaba, Pradeep Jain, Mehmet Demirors
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Patent number: 11680119Abstract: Embodiments of a method of producing a multimodal ethylene-based polymer comprising a first catalyst and a second catalyst in a first solution polymerization reactor and a third catalyst in a second solution polymerization reactor.Type: GrantFiled: December 19, 2018Date of Patent: June 20, 2023Assignee: Dow Global Technologies LLCInventors: Daniela Ferrari, Alec Y. Wang, Pradeep Jain, Yijian Lin
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Patent number: 11608390Abstract: Disclosed herein is a system for solution polymerization comprising a reactor system that is operative to receive a monomer and to react the monomer to form a polymer; a plurality of devolatilization vessels located downstream of the reactor system, where each devolatilization vessel operates at a lower pressure than the preceding devolatilization vessel; and a heat exchanger disposed between two devolatilization vessels and in fluid communication with them, where the heat exchanger has an inlet port temperature of 100° C. to 230° C., an outlet port temperature of 200° C. to 300° C., an inlet port pressure of 35 to 250 kgf/cm2 and an outlet port pressure of 20 to 200 kgf/cm2; and wherein the polymer solution remains in a single phase during its residence in the heat exchanger.Type: GrantFiled: May 30, 2019Date of Patent: March 21, 2023Assignee: DOW GLOBAL TECHNOLOGIES LLCInventors: Maria Pollard, Robert D. Swindoll, Pradeep Jain, Alec Y. Wang, Jorge Rubalcaba, Shrikant Dhodapkar, Sean W. Ewart, Bradley K. Blanchard, George W. Haun, Jr., Michael J. Zogg, Jr.
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Patent number: 11485802Abstract: A spray-dried zirconocene catalyst system comprising a zirconocene catalyst and a hydrophobic fumed silica, which supports the zirconocene catalyst. A spray-drying method of making same. Polyolefins; methods of making and using same; and articles containing same.Type: GrantFiled: March 22, 2019Date of Patent: November 1, 2022Assignee: Dow Global Technologies LLCInventors: Wesley R. Mariott, Roger L. Kuhlman, Phuong A. Cao, C. Dale Lester, Chuan He, Swapnil B. Chandak, Pradeep Jain, John F. Szul
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Publication number: 20220049027Abstract: Disclosed herein too is a method comprising charging to a reactor system a feed stream comprising a catalyst, a monomer and a solvent; reacting the monomer to form a polymer; where the polymer is contained in a single phase polymer solution; transporting the polymer solution to a pre-heater to increase the temperature of the polymer solution; charging the polymer solution to a liquid-liquid separator; reducing a pressure of the polymer solution in the liquid-liquid separator and separating a polymer-rich phase from a solvent-rich phase in the liquid-liquid separator; transporting the polymer-rich phase to a plurality of devolatilization vessels located downstream of the liquid-liquid separator, where each devolatilization vessel operates at a lower pressure than the preceding devolatilization vessel; and separating the polymer from volatiles present in the polymer rich phase.Type: ApplicationFiled: December 13, 2019Publication date: February 17, 2022Inventors: Alec Y. Wang, Jorge Rubalcaba, Michael D. Turner, Michael J. Zogg, Jr., Pradeep Jain
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Publication number: 20220017653Abstract: Disclosed herein is a system for solution polymerization comprising a reactor system that is operative to receive an anti-solvent, a monomer, and a solvent, and to react the monomer to form a polymer; where the anti-solvent is not a solvent for the polymer and is operative to reduce the lower critical solution temperature; a plurality of devolatilization vessels located downstream of the reactor system, where each devolatilization vessel operates at a lower pressure than the preceding devolatilization vessel and wherein the plurality of devolatilization vessels receives a polymer solution from the reactor system; and a liquid-liquid separator that is operative to receive a polymer solution from the reactor system and to facilitate a separation between the polymer and volatiles by reducing the pressure and temperature of the polymer solution in the liquid-liquid separator.Type: ApplicationFiled: December 13, 2019Publication date: January 20, 2022Inventors: Alec Y. Wang, Jorge Rubalcaba, Michael D. Turner, Michael J. Zogg, Jr., Pradeep Jain
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Patent number: 11174600Abstract: Artificial turf filaments formed from polyethylene are provided that can have desirable properties. In one aspect, an artificial turf filament comprises a composition comprising a first composition, wherein the first composition comprises at least one ethylene-based polymer and wherein the first composition comprises a MWCDI value greater than 0.9, and a melt index ratio (I10/I2) that meets the following equation: I10/I2?7.0?1.2×log (I2).Type: GrantFiled: June 26, 2015Date of Patent: November 16, 2021Assignee: Dow Global Technologies LLCInventors: Jian Wang, Pradeep Jain, Mehmet Demirors, Rajen M. Patel, Joseph L. Deavenport, David Lopez
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Publication number: 20210253757Abstract: A method of producing bimodal ethylene-based polymer includes reacting ethylene monomer and C3-C12 ?-olefin comonomer in the presence of a first catalyst in an agitated reactor to produce a first polymer fraction, and outputting effluent from the agitated reactor. A second catalyst is added to the effluent downstream of the agitated reactor and upstream from a non-agitated reactor, the second catalyst facilitates production of a second polymer fraction having a density and melt index (I2) different from the first polymer fraction. The second catalyst and effluent are mixed in at least one mixer. The second catalyst, second polymer fraction, and the first polymer fraction are passed to the non-agitated reactor; and additional ethylene monomer, additional C3-C12 ?-olefin comonomer, and solvent are passed to the non-agitated reactor to produce more second polymer fraction and thereby the bimodal ethylene-based polymer.Type: ApplicationFiled: June 13, 2019Publication date: August 19, 2021Applicant: Dow Global Technologies LLCInventors: Timothy W. Gambel, Curvel Hypolite, Daniel S. Rynearson, Michael J. Zogg, Jr., Kyle E. Hart, Michael D. Turner, Jorge Rubalcaba, Pradeep Jain, Mehmet Demirors
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Publication number: 20210246288Abstract: A bimodal ethylene-based polymer, including a high density fraction (HDF) from 3.0% to 25.0%, wherein the high density fraction is measured by crystallization elution fractionation (CEF) integration at temperatures from 93° C. to 119° C., an I10/I2 ratio from 5.5 to 7.5, wherein I2 is the melt index when measured according to ASTM D 1238 at a load of 2.16 kg and temperature of 190° C. and I10 is the melt index when measured according to ASTM D 1238 at a load of 10 kg and temperature of 190° C., and a short chain branching distribution (SCBD) less than or equal to 10° C., wherein the short chain branching distribution is measured by CEF full width at half height.Type: ApplicationFiled: June 13, 2019Publication date: August 12, 2021Applicant: Dow Global Technologies LLCInventors: Kyle E. Hart, Mehmet Demirors, Timothy W. Gambrel, Philip P. Fontaine, Pradeep Jain
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Publication number: 20210214470Abstract: Disclosed herein is a system for solution polymerization comprising a reactor system that is operative to receive a monomer and to react the monomer to form a polymer; a plurality of devolatilization vessels located downstream of the reactor system, where each devolatilization vessel operates at a lower pressure than the preceding devolatilization vessel; and a heat exchanger disposed between two devolatilization vessels and in fluid communication with them, where the heat exchanger has an inlet port temperature of 100° C. to 230° C., an outlet port temperature of 200° C. to 300° C., an inlet port pressure of 35 to 250 kgf/cm2 and an outlet port pressure of 20 to 200 kgf/cm2; and wherein the polymer solution remains in a single phase during its residence in the heat exchanger.Type: ApplicationFiled: May 30, 2019Publication date: July 15, 2021Inventors: Maria Pollard, Robert D. Swindoll, Pradeep Jain, Alec Y. Wang, Jorge Rubalcaba, Shrikant Dhodapkar, Sean W. Ewart, Bradley K. Blanchard, George W. Haun, Jr., Michael J. Zogg, Jr.
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Publication number: 20210032377Abstract: A spray-dried zirconocene catalyst system comprising a zirconocene catalyst and a hydrophobic fumed silica, which supports the zirconocene catalyst. A spray-drying method of making same. Polyolefins; methods of making and using same; and articles containing same.Type: ApplicationFiled: March 22, 2019Publication date: February 4, 2021Inventors: Wesley R. Mariott, Roger L. Kuhlman, Phuong A. Cao, C. Dale Lester, Chuan He, Swapnil B. Chandak, Pradeep Jain, John F. Szul
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Patent number: 10875947Abstract: New ethylene polymers having low levels of long chain branching are disclosed. Films and film layers made form these polymers have good hot tack strength over a wide range of temperatures, making them good materials for packaging applications.Type: GrantFiled: February 23, 2018Date of Patent: December 29, 2020Assignee: Dow Global Technologies LLCInventors: Rajen M. Patel, Robert N. Cotton, Sharon Baker, Pradeep Jain, Jian Wang, Jeffrey A. Sims, Tianzi Huang, Matthew Lehr
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Publication number: 20200392269Abstract: Embodiments of a method of producing a multimodal ethylene-based polymer comprising a first catalyst and a second catalyst in a first solution polymerization reactor and a third catalyst in a second solution polymerization reactor.Type: ApplicationFiled: December 19, 2018Publication date: December 17, 2020Applicant: Dow Global Technologies LLCInventors: Daniela Ferrari, Alec Y. Wang, Pradeep Jain, Yijian Lin
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Patent number: 10683398Abstract: A composition is provided that comprises at least the following: polymer particles comprising a coating on at least a portion of the total surface of the polymer particles, and wherein the coating is formed from a powder composition comprising at least one inorganic powder, and at least one organic powder selected from a metal stearate and/or a polymer powder, and wherein the weight ratio of the total amount of the inorganic powder to the total amount of the organic powder is from 3.0 to 50.0.Type: GrantFiled: September 16, 2016Date of Patent: June 16, 2020Assignee: Dow Global Technologies LLCInventors: Shrikant Dhodapkar, Remi A. Trottier, Robert Bellair, Konanur Manjunath, Pradeep Jain, Michael D. Turner
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Patent number: 10392450Abstract: A process to form a block copolymer comprising two or more regions or segments of differentiated polymer composition or properties, including feeding a first mixture that includes a chain shuttling agent, a solvent, the one or more monomers, and optionally hydrogen into a first reactor or reactor zone, feeding a second mixture that includes at least one olefin polymerization catalyst and at least one cocatalyst into the first reactor or reactor zone, contacting the first mixture and the second mixture under polymerization conditions in the first reactor or reactor zone to form a reaction mixture that is characterized by the formation of polymer chains from the monomers, allowing polymerization to occur in the first reactor or reactor zone and/or a second reactor or reactor zone to form polymer chains that are differentiated from the polymer chains, such that the resultant polymer has two or more chemically or physically distinguishable blocks.Type: GrantFiled: March 22, 2016Date of Patent: August 27, 2019Assignee: Dow Global Technologies LLCInventors: Thomas W. Karjala, Brandon Fails, Jacob Veldman, Curvel Hypolite, James B. Crim, Anthony J. Castelluccio, Ludovicus J C Sluijts, Pradeep Jain
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Patent number: 10370471Abstract: The invention provides a process to form a composition comprising at least one ethylene-based polymer and at least one oil, said process comprising the following: polymerizing a mixture comprising ethylene, and optionally one or more comonomers, in a reactor system, comprising at least one reactor and at least one mixer, located downstream from the reactor, to form the ethylene-based polymer; and wherein the oil is added to the ethylene-based polymer upstream of the mixer. The invention also provides a reactor system for a process to form a composition comprising at least one ethylene-based polymer and at least one oil, said reactor system comprising at least one reactor, at least one mixer, and an oil feed into the ethylene-based polymer, and wherein the oil feed is located after the reactor and before the mixer.Type: GrantFiled: December 18, 2015Date of Patent: August 6, 2019Assignee: Dow Global Technologies LLCInventors: Thomas W. Karjala, Jorge Rubalcaba, Edward O. Madenjian, Curvel Hypolite, Pradeep Jain
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Patent number: 10167383Abstract: The invention provides a process to form a “first composition comprising a first ethylene/?-olefin interpolymer and a second ethylene/?-olefin interpolymer,” said process comprising polymerizing a first mixture comprising ethylene, an ?-olefin, and optionally a polyene, in a stirred tank reactor to form a first ethylene/?-olefin interpolymer, and transferring at least some of the first ethylene/?-olefin interpolymer to a loop reactor, and polymerizing, therein, a second mixture comprising ethylene, an alpha-olefin, and optionally a polyene, in the presence of the first ethylene/?-olefin interpolymer, to form the “first composition comprising the first ethylene/?-olefin interpolymer and the second ethylene/?-olefin interpolymer.” The invention also provides a polymerization reactor configuration comprising at least the following: a stirred tank reactor followed by a loop reactor.Type: GrantFiled: December 18, 2015Date of Patent: January 1, 2019Assignee: Dow Global Technologies LLCInventors: Thomas W. Karjala, Jorge Rubalcaba, Edward O. Madenjian, Curvel Hypolite, Pradeep Jain
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Patent number: 10138362Abstract: The invention provides a composition comprising a first composition, comprising at least one ethylene-based polymer, and wherein the first composition comprises a MWCDI value greater than 0.9, and a melt index ratio I10/I2 that meets the following equation: I10/I2?7.0?1.2×log (I2). The invention also provides a process to form a composition comprising at least two ethylene-based polymers, said process comprising the following: polymerizing ethylene, and optionally at least one comonomer, in solution, in the presence of a catalyst system comprising a metal-ligand complex of Structure I, as described herein, to form a first ethylene-based polymer; and polymerizing ethylene, and optionally at least one comonomer, in the presence of a catalyst system comprising a Ziegler/Natta catalyst, to form a second ethylene-based polymer.Type: GrantFiled: June 26, 2015Date of Patent: November 27, 2018Assignee: Dow Global Technologies LLCInventors: Jian Wang, Pradeep Jain, Mehmet Demirors, Douglas S. Ginger, Anthony J. Castelluccio, Mridula Kapur