Patents by Inventor Sarat Munjal

Sarat Munjal 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).

  • Patent number: 12077618
    Abstract: A copolymer of ethylene and hydrolysable silane includes from 0.1 wt % to 5.0 wt % hydrolysable silane groups and has a Mz(abs)/Mw(abs) of less than or equal to 9.5; a ratio of Mz(abs)/Mw(abs) to polydispersity of less than or equal to 1.5; a polydispersity of 6.6 or greater; a Density×Polydispersity of 6.0 or greater; or an Amorphous Content at Room Temperature×Polydispersity of 360 or greater. Methods for forming a moisture-crosslinkable polymer composition include forming a copolymer of ethylene and hydrolysable silane at a polymerization temperature of greater than or equal to 180° C. to less than or equal to 400° C. at a pressure from 5,000 psi to 50,000 psi; and adding a silanol condensation catalyst to the copolymer of ethylene and hydrolysable silane.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: September 3, 2024
    Assignee: Dow Global Technologies LLC
    Inventors: Bharat I. Chaudhary, Bruce Michael Hasch, Sarat Munjal, Christopher Eddy, Kevin Paul Rogers, Rajesh P. Paradkar, Arkady Krasovskiy, Manish Talreja, Saurav S. Sengupta
  • Patent number: 11981798
    Abstract: A moisture-curable polyethylene formulation comprising a (hydrolyzable silyl group)-functional polyethylene copolymer and a condensation cure catalyst. The formulation is designed to be rapidly moisture curable under ambient conditions. Also methods of making and using same; cured polymer products made therefrom; and articles containing or made from same.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: May 14, 2024
    Assignee: Dow Global Technologies LLC
    Inventors: Bharat I. Chaudhary, Sarat Munjal, Rajesh P. Paradkar, Arkady L. Krasovskiy, Manish Talreja, Manish K. Mundra, Kevin P. Rogers, Bruce M. Hasch
  • Patent number: 11912852
    Abstract: An insulated wire or cable is made by a process comprising the steps of: (A) extruding onto a covered or uncovered metal conductor or optical fiber a composition having a DF measured at 130° C. (60 Hz, 2 kV) or 120° C. (60 Hz, 8 kV) or 100° C. (60 Hz, 8 kV) of ?0.5% and comprising: (1) a high melt strength ethylene-based polymer made in a tubular reactor, and (2) a peroxide, and (B) crosslinking the high melt strength ethylene-based polymer.
    Type: Grant
    Filed: May 10, 2023
    Date of Patent: February 27, 2024
    Assignee: Dow Global Technologies LLC
    Inventors: Bharat I. Chaudhary, Christopher R. Eddy, Sarat Munjal, Kalyan Sehanobish, Hayley Brown, John O. Osby, Jose Ortega
  • Publication number: 20230303815
    Abstract: An insulated wire or cable is made by a process comprising the steps of: (A) extruding onto a covered or uncovered metal conductor or optical fiber a composition having a DF measured at 130° C. (60 Hz, 2 kV) or 120° C. (60 Hz, 8 kV) or 100° C. (60 Hz, 8 kV) of ?0.5% and comprising: (1) a high melt strength ethylene-based polymer made in a tubular reactor, and (2) a peroxide, and (B) crosslinking the high melt strength ethylene-based polymer.
    Type: Application
    Filed: May 10, 2023
    Publication date: September 28, 2023
    Inventors: Bharat I. Chaudhary, Christopher R. Eddy, Sarat Munjal, Kalyan Sehanobish, Hayley Brown, John O. Osby, Jose Ortega
  • Publication number: 20230287157
    Abstract: The present disclosure provides a process. In an embodiment, the process includes providing a multifunctional branching agent (MFBA). The MFBA has A) three or more carbon-carbon double bonds with the provisos (1) that the MFBA is not a polymer of butadiene, and (2) the MFBA does not contain an acrylate group or a methacrylate group. The MFBA has B) a total reactivity, R, greater than 3 and less than 40, (3<R<40) wherein R is determined with the following formula (I): wherein j=index of summation, p=the number of different types of carbon-carbon double bonds j in the molecule, nj=the number of each carbon-carbon double bond of type j in the molecule, and r1,j=the relative reactivity ratio (RRR) of ethylene to the carbon-carbon double bond j. The process includes reacting the MFBA with ethylene under polymerization conditions and forming an ethylene-based polymer composition composed of units of ethylene and units of the MFBA.
    Type: Application
    Filed: July 27, 2021
    Publication date: September 14, 2023
    Inventors: Ivan A. Konstantinov, Arkady L. Krasovskiy, Sean W. Ewart, Sarat Munjal, Michael W. Tilston
  • Publication number: 20230220127
    Abstract: Embodiments of a method for reducing unreacted ethylene monomer in a low density polyethylene (LDPE) polymerization process comprises: delivering a monomer feedstock comprising ethylene monomer to a compressor system to produce a pressurized feedstock having a pressure of at least 2000 bar; passing the pressurized feedstock to at least one free radical polymerization reactor to produce a reactor effluent comprising the LDPE and unreacted ethylene monomer; and delivering the reactor effluent to a separation system comprising a first separation vessel, a second separation vessel, and a third separation vessel in series, the third separation vessel having an operating pressure of less than or equal to 0.05 bar, wherein the third separation vessel produces a separation product comprising LDPE and less than or equal to 50 ppm of the unreacted ethylene monomer, wherein there is no stripping agent added upstream of the third separation vessel.
    Type: Application
    Filed: June 3, 2021
    Publication date: July 13, 2023
    Applicant: Dow Global Technologies LLC
    Inventors: Jose Ortega, Sarat Munjal, Sergio E. Goncalves
  • Patent number: 11680120
    Abstract: Embodiments of a method for producing a multimodal ethylene-based polymer having a first, second, and third ethylene-based component, wherein the multimodal ethylene based polymer results when ethylene monomer, at least one C3-C12 comonomer, solvent, and optionally hydrogen pass through a first solution, and subsequently, a second solution polymerization reactor. The first solution polymerization reactor or the second solution polymerization reactor receives both a first catalyst and a second catalyst, and a third catalyst passes through either the first or second solution polymerization reactors where the first and second catalysts are not already present. Each ethylene-based component is a polymerized reaction product of ethylene monomer and C3-C12 comonomer catalyzed by one of the three catalysts.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: June 20, 2023
    Assignee: Dow Global Technologies LLC
    Inventors: Alec Y. Wang, Johnathan E. DeLorbe, Joshua B. Gaubert, Sarat Munjal, Mehmet Demirors, Yijian Lin
  • Patent number: 11674028
    Abstract: An insulated wire or cable is made by a process comprising the steps of: (A) extruding onto a covered or uncovered metal conductor or optical fiber a composition having a DF measured at 130° C. (60 Hz, 2 kV) or 120° C. (60 Hz, 8 kV) or 100° C. (60 Hz, 8 kV) of ?0.5% and comprising: (1) a high melt strength ethylene-based polymer made in a tubular reactor, and (2) a peroxide, and (B) crosslinking the high melt strength ethylene-based polymer.
    Type: Grant
    Filed: November 6, 2020
    Date of Patent: June 13, 2023
    Assignee: Dow Global Technologies LLC
    Inventors: Bharat I. Chaudhary, Christopher R. Eddy, Sarat Munjal, Kalyan Sehanobish, Hayley Brown, John O. Osby, Jose Ortega
  • Publication number: 20230121509
    Abstract: The present disclosure provides a process. In an embodiment, the process includes introducing an antifoulant into an ethylene feed of a reactor system. The reactor system includes the ethylene feed, a hyper-compressor, a preheater and a polymerization reactor. The ethylene feed is located upstream of the hyper-compressor. The antifoulant consists of an inhibitor, molecular oxygen, and optionally a solvent. As the ethylene feed is located upstream of the hyper-compressor, the process includes introducing the antifoulant into the ethylene feed upstream of the hyper-compressor. The process further includes adding a free radical initiator to the polymerization reactor. The process further includes polymerizing the ethylene in the polymerization reactor under high pressure free-radical polymerization conditions, and forming an ethylene-based polymer.
    Type: Application
    Filed: March 26, 2021
    Publication date: April 20, 2023
    Inventors: Sean W. Ewart, Sarat Munjal, Alexandra E. Frankel, Henk Hagen
  • Publication number: 20230056229
    Abstract: The present disclosure provides an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The ethylene-based polymer composition includes ethylene monomer and a mixture of hydrocarbon-based molecules, each hydrocarbon-based molecule comprising three or more terminal alkene groups. The ethylene-based polymer has a melt index (MI) from 0.1 to 1.0 g/10 min.
    Type: Application
    Filed: November 11, 2020
    Publication date: February 23, 2023
    Inventors: Arkady L. Krasovskiy, Ivan A. Konstantinov, Sarat Munjal, Sean W. Ewart
  • Publication number: 20230047114
    Abstract: The present disclosure provides a composition. In an embodiment, the composition is an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The composition includes ethylene monomer and a mixture of hydrocarbon-based molecules. Each hydrocarbon-based molecule includes three or more internal alkene groups.
    Type: Application
    Filed: November 11, 2020
    Publication date: February 16, 2023
    Inventors: Arkady L. Krasovskiy, Ivan A. Konstantinov, Sarat Munjal, Sean W. Ewart
  • Patent number: 11555084
    Abstract: Embodiments of methods for producing a trimodal polymer in a solution polymerization process comprise three solution polymerization reactors organized in parallel or in series.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: January 17, 2023
    Assignee: Dow Global Technologies LLC
    Inventors: Sarat Munjal, Brian W. Kolthammer, Mehmet Demirors, Michael D. Turner, Joshua B. Gaubert, Yijian Lin
  • Publication number: 20220411614
    Abstract: The present disclosure provides a composition. In an embodiment, the composition is an ethylene-based polymer composition formed by high pressure (greater or equal to 100 MPa) free radical polymerization. The ethylene-based polymer composition includes ethylene monomer and a mixture of hydroxyl-terminated polybutadiene molecules (PB-OH). Each PB-OH molecule includes internal alkene groups and terminal alkene groups. Each PB-OH molecule has more internal alkene groups than terminal alkene groups.
    Type: Application
    Filed: November 11, 2020
    Publication date: December 29, 2022
    Inventors: Arkady L. Krasovskiy, Ivan A. Konstantinov, Sarat Munjal, Sean W. Ewart
  • Publication number: 20220259341
    Abstract: The present disclosure provides an ethylene-based polymer. The ethylene-based polymer is formed from reacting, under polymerization conditions, ethylene monomer and bisallyl maleate (“BAIIM”). The present ethylene-based polymer with ethylene monomer and bisallyl maleate branching agent is interchangeably referred to as “BAIIM-PE.
    Type: Application
    Filed: July 27, 2020
    Publication date: August 18, 2022
    Inventors: Arkady L. Krasovskiy, Yifan Y. Dong, Alexandra E. Frankel, Ivan A. Konstantinov, Sarat Munjal, Sean W. Ewart, Rajesh P. Paradkar, Daniel W. Baugh
  • Publication number: 20220153973
    Abstract: A moisture-curable polyethylene formulation comprising a (hydrolyzable silyl group)-functional polyethylene copolymer and a condensation cure catalyst. The formulation is designed to be rapidly moisture curable under ambient conditions. Also methods of making and using same; cured polymer products made therefrom; and articles containing or made from same.
    Type: Application
    Filed: February 11, 2020
    Publication date: May 19, 2022
    Applicant: Dow Global Technologies LLC
    Inventors: Bharat I. Chaudhary, Sarat Munjal, Rajesh P. Paradkar, Arkady L. Krasovskiy, Manish Talreja, Manish K. Mundra, Kevin P. Rogers, Bruce M. Hasch
  • Publication number: 20220017666
    Abstract: The present disclosure provides a polymer composition. In an embodiment, an ethylene-based polymer composition is provided and is formed by high pressure (greater than or equal to 100 MPa), free-radical polymerization, by reacting: ethylene monomer and a mixture of hydrocarbon-based molecules, with each hydrocarbon-based molecule comprising three or more terminal alkene groups.
    Type: Application
    Filed: November 26, 2019
    Publication date: January 20, 2022
    Inventors: Hayley A. Brown, Carmelo Declet Perez, John O. Osby, Sean W. Ewart, Sarat Munjal, Christopher R. Eddy, Mehmet Demirors, Jonathan D. Mendenhall, Ivan A. Konstantinov, Arkady L. Krasovskiy
  • Publication number: 20210363277
    Abstract: A copolymer of ethylene and hydrolysable silane includes from 0.1 wt % to 5.0 wt % hydrolysable silane groups and has a Mz(abs)/Mw(abs) of less than or equal to 9.5; a ratio of Mz(abs)/Mw(abs) to polydispersity of less than or equal to 1.5; a polydispersity of 6.6 or greater; a Density×Polydispersity of 6.0 or greater; or an Amorphous Content at Room Temperature×Polydispersity of 360 or greater. Methods for forming a moisture-crosslinkable polymer composition include forming a copolymer of ethylene and hydrolysable silane at a polymerization temperature of greater than or equal to 180° C. to less than or equal to 400° C. at a pressure from 5,000 psi to 50,000 psi; and adding a silanol condensation catalyst to the copolymer of ethylene and hydrolysable silane.
    Type: Application
    Filed: November 11, 2019
    Publication date: November 25, 2021
    Applicants: Dow Global Technologies LLC, Performance Materials NA, Inc.
    Inventors: Bharat I. Chaudhary, Bruce Michael Hasch, Sarat Munjal, Christopher Eddy, Kevin Paul Rogers, Rajesh P. Paradkar, Arkady Krasovskiy, Manish Talreja, Saurav S. Sengupta
  • Patent number: 11078441
    Abstract: A process to prepare an ethylene-based polymer, said process comprising polymerizing a mixture comprising ethylene, at a pressure greater than, or equal to, 100 MPa, in the presence of at least one free-radical initiator; and in a reactor system comprising at least one reactor and at least one Hyper-compressor, and wherein at least one oil formulation, optionally comprising one or more lubrication agents, is added to the Hyper-compressor; and wherein at least one of the following steps takes place: A) thermally treating the one or more lubrication agents, in an oxygen-free atmosphere, to achieve a peroxide level ?10 ppm, based on the weight of the lubrication agent(s), and then adding said agent(s) to the oil formulation, prior to adding the oil formulation to the Hyper-compressor; or B) thermally treating the oil formulation, in an oxygen-free atmosphere, to achieve a peroxide level ?10 ppm, based on the weight of the oil formulation, prior to adding the oil formulation to the Hyper-compressor; C) a combinat
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: August 3, 2021
    Assignee: Dow Global Technologies LLC
    Inventors: Sean W. Ewart, Sarat Munjal, Kefu Sun
  • Publication number: 20210079138
    Abstract: Embodiments of a method for producing a multimodal ethylene-based polymer having a first, second, and third ethylene-based component, wherein the multimodal ethylene based polymer results when ethylene monomer, at least one C3-C12 comonomer, solvent, and optionally hydrogen pass through a first solution, and subsequently, a second solution polymerization reactor. The first solution polymerization reactor or the second solution polymerization reactor receives both a first catalyst and a second catalyst, and a third catalyst passes through either the first or second solution polymerization reactors where the first and second catalysts are not already present. Each ethylene-based component is a polymerized reaction product of ethylene monomer and C3-C12 comonomer catalyzed by one of the three catalysts.
    Type: Application
    Filed: December 19, 2018
    Publication date: March 18, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Alec Y. Wang, Johnathan E. DeLorbe, Joshua B. Gaubert, Sarat Munjal, Mehmet Demirors, Yijian Lin
  • Publication number: 20210079139
    Abstract: Embodiments of methods for producing a trimodal polymer in a solution polymerization process comprise three solution polymerization reactors organized in parallel or in series.
    Type: Application
    Filed: December 19, 2018
    Publication date: March 18, 2021
    Applicant: Dow Global Technologies LLC
    Inventors: Sarat Munjal, Brian W. Kolthammer, Mehmet Demirors, Michael D. Turner, Joshua B. Gaubert, Yijian Lin