Patents Examined by Fred M Teskin
  • Patent number: 11326004
    Abstract: Isobutylene copolymer includes repeat units derived from isobutylene and one or more comonomers selected from isoprene, butadiene, cyclopentadiene, dicyclopentadiene, limonene, substituted styrenes, and C4 to C10 dienes other than isoprene, butadiene, limonene, cyclopentadiene, or dicyclopentadiene, wherein the molar ratio of isobutylene derived repeat units to the comonomer derived repeat units is from 75:1 to 1.5:1. The copolymers have a molecular weight, Mn, of from 200 to 20,000 Daltons and typically have a high double bond content and a high vinylidene double bond content when diene monomers are utilized.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: May 10, 2022
    Assignee: TPC GROUP LLC
    Inventors: Rajeev Kumar, André M. Gobin, George Pappas, James A. Hopson, Michael O. Nutt, Peggy J. Macatangay, Randall V. Redd
  • Patent number: 11326003
    Abstract: Polymerization processes for producing ethylene-based plastomers and elastomers having densities less than 0.91 g/cm3 utilize a metallocene-based catalyst system containing a chemically-treated solid oxide. These polymerization processes can be conducted in a slurry reactor, a solution reactor, and/or a gas phase reactor. Ethylene polymers produced from the polymerization process can be characterized by a density of less than 0.91 g/cm3, a CY-a parameter of less than 0.2, and a ratio of HLMI/MI of at least 30, or a density less than 0.91 g/cm3, a CY-a parameter from 0.25 to 0.75, and a ratio of Mw/Mn from 2 to 3.
    Type: Grant
    Filed: September 21, 2021
    Date of Patent: May 10, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Scott E. Kufeld, Max P. McDaniel, Kenneth A. Dooley
  • Patent number: 11325999
    Abstract: Methods for producing polyethylene compositions having broader melt index ratio and narrower molecular weight distribution in high pressure multi-feed tubular reactors are provided. The methods are useful in multi-feed tubular reactors comprising three or more reaction zones. The first reaction zone or the first and second reaction zone having a peak temperature that is lower than standard peak temperatures for polymerization of ethylene monomer in a tubular reactor.
    Type: Grant
    Filed: September 8, 2020
    Date of Patent: May 10, 2022
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: William J. Zafian, Henri A. Lammens
  • Patent number: 11326002
    Abstract: A polymer composition may include a polymer produced from ethylene, one or more branched vinyl ester monomers, and optionally, vinyl acetate; wherein the polymer has a number average molecular weight ranging from 5 to 10,000 kDa, and a molecular weight distribution ranging from 1 to 60, obtained by GPC.
    Type: Grant
    Filed: October 5, 2020
    Date of Patent: May 10, 2022
    Assignee: Braskem S.A.
    Inventors: Ashley Hanlon, Hadi Mohammadi, Nei Sebastiao Domingues, Jr., Adriane Gomes Simanke, Manoela Ellwanger Cangussu, Markus Busch, Sascha Hintenlang
  • Patent number: 11325997
    Abstract: Supported chromium catalysts containing a solid oxide and 0.1 to 15 wt. % chromium, in which the solid oxide or the supported chromium catalyst has a particle size span from 0.5 to 1.4, less than 3 wt. % has a particle size greater than 100 ?m, and less than 10 wt. % has a particle size less than 10 ?m, can be contacted with an olefin monomer in a loop slurry reactor to produce an olefin polymer. Representative ethylene-based polymers produced using the chromium catalysts have a HLMI of 4 to 70 g/10 min, a density from 0.93 to 0.96 g/cm3, from 150 to 680 ppm solid oxide (such as silica), from 1.5 to 6.8 ppm chromium, and a film gel count of less than 15 catalyst particle gels per ft2 of 25 micron thick film and/or a gel count of less than or equal to 50 catalyst particles of greater than 100 ?m per five grams of the ethylene polymer.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: May 10, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Max P. McDaniel, Carlton E. Ash, Kathy S. Clear, Eric D. Schwerdtfeger, Carlos A. Cruz, Jeremy M. Praetorius, Youlu Yu
  • Patent number: 11325287
    Abstract: A shaping material contains a crystalline alicyclic structure-containing resin. More specifically, the crystalline alicyclic structure-containing resin in the shaping material has a melting point of 200° C. or higher, and content of chlorobenzene-soluble components in the shaping material is 1,000 ppm or less as an o-dichlorobenzene-equivalent value based on gas chromatography analysis with o-dichlorobenzene as a standard substance.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: May 10, 2022
    Assignee: ZEON CORPORATION
    Inventors: Shinsuke Miyazawa, Satoshi Yamada, Ayako Kato, Eito Ariura
  • Patent number: 11319386
    Abstract: The present invention relates to a modifier represented by Formula 1, a method for preparing the same, a modified conjugated diene-based polymer including a functional group derived from the modifier and having a high modification ratio, and a method for preparing the polymer.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: May 3, 2022
    Inventors: Ji Eun Kim, Eun Gyeong Lee, Dae June Joe, Won Mun Choi
  • Patent number: 11312792
    Abstract: The present invention relates to a reactor system for a multimodal polyethylene polymerization process, comprising; (a) a first reactor; (b) a hydrogen removal unit arranged between the first reactor and a second reactor comprising at least one vessel connected with a depressurization equipment, preferably selected from vacuum pump, compressor, blower, ejector or a combination thereof, the depressurization equipment allowing to adjust an operating pressure to a pressure in a range of 100-200 kPa (abs); (c) the second reactor; and (d) a third reactor and the use thereof as a container.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: April 26, 2022
    Assignees: Thai Polyethylene Co., Ltd., SCG Chemicals Co., Ltd.
    Inventors: Chatdao Suk-Em, Natthaporn Suchao-In, Watcharee Cheevasrirungruang, Warachad Klomkamol, Boonyakeat Thitisak
  • Patent number: 11312796
    Abstract: Disclosed are a novel metallocene catalyst and a method for preparing a polyolefin having a high molecular weight and a low melt index by using the same. The present invention provides a transition metal compound represented by formula 1.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: April 26, 2022
    Assignee: LOTTE CHEMICAL CORPORATION
    Inventors: Joon Keun Min, Su Jeong Jeong, Hyun Yul Woo, Rai Ha Lee, Eun Hye Shin, Byung Hun Chae
  • Patent number: 11306163
    Abstract: The invention relates to a solid catalyst system comprising a chromium compound, a metal compound, an aluminium compound and a silicon oxide support, wherein the silicon oxide support has an average particle diameter in the range between ?20 and ?50 ?m, a pore volume in the range between ?1.7 ml/g and ?3 ml/g, and a surface area in the range between ?400 m2/g and ?800 m2/g, and wherein the aluminium alkoxide compound has the formula R1—Al—OR2 wherein R1 is selected from (C1-C8) alkyl groups and OR2 is selected from (C1-C8) alkoxyl groups.
    Type: Grant
    Filed: January 10, 2018
    Date of Patent: April 19, 2022
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Orass M. Hamed, Vugar O. Aliyev, Moosa Husain Al-Harthe
  • Patent number: 11302459
    Abstract: A bimodal polyethylene is provided. The bimodal polyethylene may include a high molecular weight portion having a weight average molecular weight (Mw) of 100,000 g/mol to 1,000,000 g/mol and a low molecular weight portion having a Mw of 10,000 g/mol to 80,000 g/mol. Polymer extrudates, such as cable-coatings and/or wire-coatings and films, including the bimodal polyethylene as well as methods of making the polymer extrudates are also provided.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: April 12, 2022
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Antonios K. Doufas, James M. Farley, Bruce J. Savatsky, Richard E. Pequeno, Giriprasath Gururajan, Nicolas M. De Ketelaere
  • Patent number: 11299563
    Abstract: A method including a) polymerizing at least one monomer in a gas phase reactor in the presence of a supported multimodal catalyst system to form a multimodal polyethylene product having a reactor split equal to respective weight fractions of resin components in the polyethylene product; b) applying a predetermined formula for a product parameter of the multimodal polyethylene product; c) obtaining incorporation data and production rate data from the reaction based upon the predetermined formula; d) determining an actual hydrogen leading indicator; e) comparing the actual hydrogen leading indicator to a target value for a hydrogen leading indicator to determine a deviation of the actual hydrogen leading indicator from the target value; and f) adjusting an amount of a catalyst precursor being fed to the gas phase reactor to control reactor split and a product parameter.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: April 12, 2022
    Assignee: Univation Technologies, LLC
    Inventors: Timothy R. Lynn, Daniel N. Thomas, Jr., Bruce J. Savatsky, John F. Szul
  • Patent number: 11300501
    Abstract: Methods for determining the catalytic activity of an activated chemically-treated solid oxide using a color measurement technique are described, and these methods are integrated into transition metal-based catalyst preparation processes and systems, as well as into olefin polymerization processes and related polymerization reactor systems.
    Type: Grant
    Filed: July 19, 2021
    Date of Patent: April 12, 2022
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Qing Yang, Max P. McDaniel, Richard M. Buck, Tony R. Crain, Ryan N. Rose
  • Patent number: 11299609
    Abstract: A polyethylene blend comprising a uniform dispersion of constituents (A) and (B): (A) a Ziegler-Natta catalyst-made linear low density polyethylene and (B) a metallocene catalyst-made linear low density polyethylene, a composition comprising the polyethylene blend and at least one additive, methods of making and using same, and manufactured articles and films comprising or made from same.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: April 12, 2022
    Assignee: Univation Technologies, LLC
    Inventors: Swapnil B. Chandak, Nitin Borse
  • Patent number: 11299565
    Abstract: A method of preparing a conjugated diene-based polymer is provided including: a step of polymerizing a first conjugated diene-based monomer in solution in a first polymerization reactor to prepare a first polymer solution including a first conjugated diene-based polymer; a step of polymerizing a second conjugated diene-based monomer in solution in a second polymerization reactor to prepare a second polymer solution including a second conjugated diene-based polymer; a step of supplying a first fluid separated from the first polymer solution to a first purification unit and purifying the first fluid; and a step of supplying a second fluid separated from the second polymer solution to a second purification unit and purifying the second fluid. An apparatus for preparing a conjugated diene-based polymer is also provided.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: April 12, 2022
    Inventors: Hoi In Jeong, Jun Seok Ko, Woo Sung Hwang, Dong Min Kim, Jeong Seok Lee
  • Patent number: 11292935
    Abstract: Provided is a latex-based composition capable of being applied to a surface to form a strippable coating on the surface that can encapsulate substances. The composition may include a latex polymer component and an anti-freeze component, and have a viscosity of less than or equal to about 90 cP. The composition may be delivered as an aerosol spray or a misting agent.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: April 5, 2022
    Assignee: Tru BLOC LLC
    Inventors: Thomas J. Nachtman, John A. Kelton
  • Patent number: 11292854
    Abstract: The present invention relates to a continuous olefin polymerization process comprising polymerization of at least one olefin monomer in at least two serial vapor phase polymerization reactors containing an agitated bed of forming polymer particles, comprising a polymer particles transfer step wherein forming polymer particles are transferred from an upstream reactor to a downstream reactor comprising in a repeating sequence the steps of discharging at least one charge of polymer powder and reactive gases from the upstream reactor into a gas-solid separator; collecting the polymer powder separated in the gas-solid separator in a pressure transfer chamber; increasing the pressure in the pressure transfer chamber with a pressurizing gas to a pressure that is higher than the operating pressure of the downstream reactor; and discharging the polymer powder from the pressure transfer chamber into the downstream reactor, wherein said process reduces the carry-over of reactive gases from the upstream reactor to the do
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: April 5, 2022
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Arjen Van Miltenburg, Rita Ferreira Tavares, Andre Dehaan
  • Patent number: 11286319
    Abstract: Provided is a method of producing a multicomponent copolymer, in which ethylene, a non-conjugated olefin compound having 3 to 10 carbon atoms, and a conjugated diene compound are copolymerized to produce a multicomponent copolymer. The method of producing a multicomponent copolymer is a method in which ethylene, a non-conjugated olefin compound having 3 to 10 carbon atoms, and a conjugated diene compound are copolymerized to produce a multicomponent copolymer, including a step of copolymerizing the ethylene, the non-conjugated olefin compound, and the conjugated diene compound, in the presence of a polymerization catalyst composition containing a rare earth element compound (component (A)) represented by predetermined formula.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: March 29, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventor: Olivier Tardif
  • Patent number: 11279785
    Abstract: It is an object of the disclosure to provide a production method for a copolymer in which a copolymer with a high content of cis-1,4 bonds of a conjugated diene portion can be obtained at a high yield even when a cyclic olefin compound is used as a monomer. In order to achieve the object, the present disclosure includes a step of polymerizing a conjugated diene compound and a cyclic olefin compound in the presence of a catalyst composition containing a rare-earth element compound represented by the following formula (I), at least one compound selected from the group consisting of an ionic compound and a halogen compound, a compound represented by the following formula (II), and a coordination compound that can be a ligand: M-(AQ1)(AQ2)(AQ3)??(I) YR1aR2bR3c??(II).
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: March 22, 2022
    Assignee: BRIDGESTONE CORPORATION
    Inventors: Shigenaga Takano, Shojiro Kaita, Olivier Tardif
  • Patent number: 11267906
    Abstract: A method of preparing an aromatic vinyl compound-vinyl cyanide compound polymer includes polymerizing a reaction mixture containing an aromatic vinyl compound, a vinyl cyanide compound, and an organic solvent in a reactor and transferring the vaporized reaction mixture present in the upper space of the reactor to a heat exchanger via a pipe and condensing the vaporized reaction mixture. The condensed reaction mixture is transferred to one side of the pipe and sprayed into the pipe, the flow velocity of the reaction mixture vaporized in the reactor is reduced, and temperature is lowered. Accordingly, a phenomenon wherein polymer particles in a reactor are sucked into a heat exchanger is prevented, and occurrence of polymerization in the heat exchanger is suppressed. Therefore, productivity and quality may be improved.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: March 8, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Daeyoung Shin, Jeong A Hwang, Eun Jung Joo, Won Kyun Lee, Sungkeun Jang