Abstract: The present disclosure relates to a one-pot process for synthesizing functional compounds or functional polymers by reacting an aldehyde with an alkyl-zinc or polymeryl-zinc composition in the presence of a specific Lewis acid, wherein the reaction is rapid and facile at high temperatures.
Abstract: A propylene-?-olefin-diene (PEDM) terpolymer may comprise 75 to 95 wt % propylene, 5 to 20 wt % ?-olefin, and 0.5 to 5 wt % diene, said wt % based on the weight of the PEDM terpolymer. The propylene-?-olefin-diene terpolymer may be blended with an ethylene-based copolymer and optionally a variety of additives to form an elastomeric composition. An exemplary elastomeric composition includes 5 to 40 parts by weight per hundred parts by weight rubber (phr) of the PEDM terpolymer, 60 to 95 phr of the ethylene-based copolymer, and optionally additives like carbon black, zinc dimethacrylate, paraffinic oil, zinc oxide, and/or zinc stearate.
Type:
Grant
Filed:
March 18, 2019
Date of Patent:
August 22, 2023
Assignee:
ExxonMobil Chemical Patents Inc.
Inventors:
Scott H. Loyd, Rainer Kolb, Narayanaswami Dharmarajan, Andy H. Tsou, Zhifeng Bai, James N. Coffey
Abstract: The present disclosure relates to Lewis base catalysts. Catalysts, catalyst systems, and processes of the present disclosure can provide high temperature ethylene polymerization, propylene polymerization, or copolymerization. In at least one embodiment, the catalyst compounds belong to a family of compounds comprising amido-phenolate-heterocyclic ligands coordinated to group 4 transition metals. The tridendate ligand may include a central neutral hetrocyclic donor group, an anionic phenolate donor, and an anionic amido donor. In some embodiments, the present disclosure provides a catalyst system comprising an activator and a catalyst of the present disclosure. In some embodiments, the present disclosure provides a polymerization process comprising a) contacting one or more olefin monomers with a catalyst system comprising: i) an activator and ii) a catalyst of the present disclosure.
Type:
Grant
Filed:
February 11, 2021
Date of Patent:
August 22, 2023
Assignee:
ExxonMobil Chemical Patents Inc.
Inventors:
Georgy P. Goryunov, Mikhail I. Sharikov, Vladislav A. Popov, Dmitry V. Uborsky, Alexander Z. Voskoboynikov, John R. Hagadorn, Jo Ann M. Canich
Abstract: An olefin-based copolymer and method of making the same are disclosed herein. In some embodiments, the olefin-based copolymer includes a repeating unit derived from an alpha-olefin, wherein the alphas-olefin is present in the copolymer at 15 wt % to 45 wt %, wherein the copolymer has a density (d) of 0.85 to 0.89 g/cc, a melt index (MI), measured at 190° C. and 2.16 kg load, of 15 g/10 min to 100 g/10 min, and a hardness defined by Equation 1. The olefin-based copolymer has improved hardness and is highly flowable, and may show improved physical properties of tensile strength, elongation rate and flexural modulus.
Type:
Grant
Filed:
May 3, 2019
Date of Patent:
August 22, 2023
Inventors:
Sang Eun Park, Eun Jung Lee, Hyun Jin Ju, In Sung Park, Choong Hoon Lee, Jin Sam Gong, Jung Ho Jun, Rae Keun Gwak
Abstract: The present invention provides an ethylene/alpha-olefin copolymer having narrow molecular weight distribution together with a low density and an ultra low molecular weight, minimized number of unsaturated functional groups, and particularly a small amount of vinylidene among the unsaturated functional groups to show excellent physical properties, and a method for preparing the same.
Type:
Grant
Filed:
May 3, 2019
Date of Patent:
August 8, 2023
Inventors:
Jung Ho Jun, Seung Hwan Jung, Jin Sam Gong, Rae Keun Gwak, Choong Hoon Lee, Eun Jung Lee, Hyun Jin Ju, In Sung Park, Sang Eun Park
Abstract: A method of light-promoted frontal ring-opening metathesis polymerization includes providing a monomer solution including dicyclopentadiene, a ruthenium-based catalyst and a phosphite inhibitor, and exposing the monomer solution to ultraviolet light having a wavelength in a range from 315 nm to 400 nm, thereby initiating an exothermic polymerization reaction and generating a self-propagating polymerization front. The polymerization front moves through the monomer solution and polymerizes the dicyclopentadiene.
Type:
Grant
Filed:
October 13, 2021
Date of Patent:
August 8, 2023
Assignee:
THE BOARD OF TRUSTEES OF THE UNIVERSITY OF ILLINOIS
Inventors:
Jeffrey S. Moore, Nancy R. Sottos, Kevin J. Schwarz, Katherine J. Stawiasz, Justine E. Paul
Abstract: The present invention provides an ethylene/alpha-olefin copolymer having narrow molecular weight distribution together with a low density and an ultra low molecular weight, having minimized number of unsaturated functional groups, and having uniform crystallinity, thereby showing excellent physical properties, and a method for preparing the same.
Type:
Grant
Filed:
May 3, 2019
Date of Patent:
August 8, 2023
Inventors:
Rae Keun Gwak, Seung Hwan Jung, Jin Sam Gong, Jung Ho Jun, Choong Hoon Lee, Eun Jung Lee, Hyun Jin Ju, In Sung Park, Sang Eun Park
Abstract: The present invention provides an adhesive composition including an ethylene/alpha-olefin copolymer; and a tackifier, wherein the ethylene/alpha-olefin copolymer has narrow molecular weight distribution together with a low density and an ultra low molecular weight, minimized number of unsaturated functional groups, and particularly a small amount of vinylidene among the unsaturated functional groups, thereby showing excellent physical properties.
Type:
Grant
Filed:
May 3, 2019
Date of Patent:
August 8, 2023
Inventors:
Jung Ho Jun, Eun Jung Lee, Jin Sam Gong, Rae Keun Gwak, Tae Su Kim
Abstract: The present disclosure related to iron-containing compounds including a 2,6-diiminoaryl ligand and one or more substituted hydrocarbyl substituents. Catalysts, catalyst systems, and processes of the present disclosure can provide polyolefins with high or low molecular weight, low comonomer content, narrow polydispersity indices, and broad orthogonal composition distribution. The present disclosure provides new and improved iron-containing catalysts with enhanced solubility in hydrophobic (nonpolar) solvents.
Type:
Grant
Filed:
December 11, 2020
Date of Patent:
August 8, 2023
Assignee:
ExxonMobil Chemical Patents Inc.
Inventors:
Matthew W. Holtcamp, Robert L. Halbach, Subramaniam Kuppuswamy, Matthew S. Bedoya
Abstract: The present invention relates to a method for preparing superabsorbent polymer. The method for preparing superabsorbent polymer according to the present invention enables providing superabsorbent polymer having excellent absorption ratio, absorption speed and permeability.
Type:
Grant
Filed:
December 26, 2017
Date of Patent:
August 1, 2023
Inventors:
Dong Hyun Kim, Tae Bin Ahn, Jun Wye Lee, Chang Sun Han
Abstract: The invention relates to a polymer composition comprising a polyethylene and a crosslinking agent, wherein the polymer composition contains a total amount of vinyl groups which is B vinyl groups per 1000 carbon atoms, and B1?B, wherein B1 is 0.88, when measured prior to crosslinking according to method ASTM D624898; and wherein the crosslinking agent is present in an amount which Z wt %, based on the total amount (100 wt %) of the polymer composition, and Z?Z2, wherein Z2 is 0.60, an article being e.g. a cable, e.g. a power cable, and processes for producing a polymer composition and an article; useful in different end applications, such as wire and cable (W&C) applications.
Type:
Grant
Filed:
December 18, 2018
Date of Patent:
July 25, 2023
Assignee:
BOREALIS AG
Inventors:
Villgot Englund, Virginie Eriksson, Daniel Nilsson, Annika Smedberg
Abstract: Embodiments are directed to catalyst systems comprising at least one metal ligand complex and to processes for polyolefin polymerization incorporating the catalyst systems.
Abstract: This disclosure describes polymerization processes and processes for quenching polymerization reactions using reactive particulates, such as amorphous silica, as quenching agents, typically in solution or bulk polymerization processes.
Type:
Grant
Filed:
May 24, 2021
Date of Patent:
July 25, 2023
Assignee:
ExxonMobil Chemical Patents Inc.
Inventors:
Jay L. Reimers, Yifeng Hong, John R. Hagadorn
Abstract: Provided herein are polymer compositions comprising a polymer and polymer processing aid (PPA) comprising a blend of at least two of: (i) a polyethylene glycol; (ii) a surfactant comprising a sorbitan ester or a polysorbate; and (iii) a metal salt of a fatty acid. The polymer can be a C2-C6 olefin homopolymer or a copolymer of two or more C2-C20 ?-olefins, and the polymer composition can take the form of polymer pellets; a polymer melt; reactor-grade polymer granules and/or polymer slurries; or other form of polymer composition containing the PPA and optionally one or more other additives. The polymer composition is preferably free or substantially free of fluorine, including fluoropolymer-based PPAs.
Type:
Grant
Filed:
September 23, 2022
Date of Patent:
July 18, 2023
Assignee:
ExxonMobil Chemical Patents Inc.
Inventors:
Nino Ruocco, Michael A. Leaf, Danny Van Hoyweghen
Abstract: A method capable of stably performing continuous production of a propylene polymer with high productivity while reducing generation of agglomerates is described. In the method, a monomer(s) containing propylene is/are (co)polymerized in a presence of an olefin polymerization catalyst with a polymerization system containing two or more gas phase polymerization reactors or a polymerization system containing a liquid phase polymerization reactor(s) and a gas phase polymerization reactor(s) such that that the total number of liquid phase polymerization reactor(s) and gas phase polymerization reactor(s) is three or more. In at least one gas phase polymerization reactor, an average retention time ?G [hour] in the gas phase polymerization, an average particle diameter Dpi [?m] of fed powder, and a total amount Co [wt %] of an ethylene-derived structural unit and C4-C12 ?-olefin-derived structural units in a polymer in discharged powder are in a predetermined relationship.
Abstract: The present invention pertains to a method for producing a copolymer of ethylene and an allyl monomer having a polar group represented by general formula (1), or a copolymer of ethylene, an allyl monomer having a polar group represented by general formula (1), and other monomers, wherein the copolymer is produced in the presence of a boron compound having a boron-hydrogen bond or a boron-carbon bond (for example, a compound represented by general formula (2)) by using a metal complex represented by general formula (C1) as a polymerization catalyst (the symbols in the formulas are as described in the description). According to the present invention, a copolymer of ethylene and an allyl monomer can be efficiently produced with high catalytic activity, wherein the copolymer has a polar group and can be used in various applications.
Type:
Grant
Filed:
March 7, 2019
Date of Patent:
July 11, 2023
Assignees:
THE UNIVERSITY OF TOKYO, SHOWA DENKO K.K., JAPAN POLYETHYLENE CORPORATION
Abstract: In various embodiments, a polyethylene formulation has a density of greater than 0.940 g/cm3 when measured according to ASTM D792, and a high load melt index (I21) of 1.0 g/10 min to 10.0 g/10 min when measured according to ASTM D1238 at 190° C. and a 21.6 kg load. Moreover, the polyethylene formulation has a peak molecular weight (Mp(GPC)) of less than 50,000 g/mol, a number average molecular weight (Mn(GPC)) of less than 30,000 g/mol, and a weight fraction (w1) of molecular weight (MW) less than 10,000 g/mol of less than or equal to 10.5 wt %, as determined by Gel Permeation Chromatography (GPC). Articles made from the polyethylene formulation, such as articles made by blow molding processes are also provided.
Type:
Grant
Filed:
July 18, 2019
Date of Patent:
June 27, 2023
Assignee:
Dow Global Technologies LLC
Inventors:
Peter S. Martin, Yijian Lin, Angela I. Padilla-Acevedo, Roger L. Kuhlman, Shadid Askar, Mridula Kapur, Todd A. Hogan, Joel D. Wieliczko, Chuan C. He
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
Abstract: New C2C3 random copolymer composition, which shows improved sealing behaviour due to low sealing initiation temperature (SIT) and high hot tack force. In addition, the inventive composition shows an excellent sterilization behaviour, i.e. retention of low haze level after sterilization. The present invention is furthermore related to the manufacture of said copolymer composition and to its use.
Type:
Grant
Filed:
June 25, 2019
Date of Patent:
June 20, 2023
Assignee:
Borealis AG
Inventors:
Jingbo Wang, Markus Gahleitner, Klaus Bernreitner, Pauli Leskinen, Cornelia Tranninger
Abstract: 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:
Grant
Filed:
December 19, 2018
Date of Patent:
June 20, 2023
Assignee:
Dow Global Technologies LLC
Inventors:
Daniela Ferrari, Alec Y. Wang, Pradeep Jain, Yijian Lin