Patents Examined by Caixia Lu
  • Patent number: 12291593
    Abstract: The present invention relates to compounds according to formula I: wherein: each R1-R10 may individually be H, a halogen, an alkoxy moiety, a siloxy moiety, a nitrogen-containing moiety, an alkyl moiety, an aryl moiety, or an aralkyl moiety, wherein each R1-R10 comprises ?10 carbon atoms, wherein each of R1-R10 may form a cyclic moiety with an adjacent R1-R10 moiety; Y is O or N—R11, wherein R11 is an alkyl, cycloalkyl, aryl or aralkyl moiety comprising 1-12 carbon atoms; M is a group 3 or 4 transition metal; X is a sigma-bonded ligand, or a diene; z is the number of ligands X that are bonded to M. Such compounds may be used in a catalyst system for olefin polymerisation.
    Type: Grant
    Filed: September 7, 2020
    Date of Patent: May 6, 2025
    Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
    Inventors: Nicolaas Hendrika Friederichs, Alexander Voskoboynikov, Dmitry Uborsky, Vincenzo Busico, Roberta Cipullo, Antonio Vittoria, Mikhail Sharikov, Pavel Kulyabin, Daniil Nosov
  • Patent number: 12275805
    Abstract: Provided is a method that enables industrially efficient production of an esterified polysaccharide product. A method for producing an esterified polysaccharide product, the method including reacting a polysaccharide-containing biomass, a basic ionic liquid with a pKa of a conjugate acid of an anion from 2 to 19 as a calculated value in a vacuum, and an esterifying agent using a kneader equipped with a shear force application mechanism. A cation constituting the basic ionic liquid is preferably one selected from the group consisting of an imidazolium cation, a pyridinium cation, and a tetraalkylammonium cation.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: April 15, 2025
    Assignees: NATIONAL UNIVERSITY CORPORATION KANAZAWA UNIVERSITY, DAICEL CORPORATION
    Inventors: Daisuke Hirose, Masashi Genda, Naoki Wada, Kentaro Taki, Kenji Takahashi, Hiroyuki Matsumura
  • Patent number: 12275809
    Abstract: Ethylene-based polymers having a density of 0.952 to 0.968 g/cm3, a ratio of HLMI/MI from 185 to 550, an IB parameter from 1.46 to 1.80, a tan ? at 0.1 sec?1 from 1.05 to 1.75 degrees, and a slope of a plot of viscosity versus shear rate at 100 sec?1 from 0.18 to 0.28 are described, with low melt flow versions having a HLMI from 10 to 30 g/10 min and a Mw from 250,000 to 450,000 g/mol, and high melt flow versions having a HLMI from 30 to 55 g/10 min and a Mw from 200,000 to 300,000 g/mol. These polymers have the processability of chromium-based resins, but with improved stress crack resistance and topload strength for bottles and other blow molded products.
    Type: Grant
    Filed: October 16, 2023
    Date of Patent: April 15, 2025
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Jeremy M. Praetorius, Yongwoo Inn, Alfred E. Brown, Jr., Brandy Rutledge-Ryal, Carlos A. Cruz, Jay M. Chaffin
  • Patent number: 12258433
    Abstract: The present invention relates to a transition metal compound for a catalyst for olefin polymerization and to a catalyst for olefin polymerization comprising the same. Specifically, the present invention relates to a transition metal compound for a catalyst for olefin polymerization in which an allyltrimethylsilane substituent is introduced into the carbon-bridged cyclopentadienyl fluorenyl backbone and to a catalyst for olefin polymerization comprising the same.
    Type: Grant
    Filed: July 17, 2020
    Date of Patent: March 25, 2025
    Assignee: HANWHA SOLUTIONS CORPORATION
    Inventors: Seongyeon Park, Ranwha Park, Won Jong Lee, Hyunseung Lee, Wook Jeong, Taeho Jeong
  • Patent number: 12258432
    Abstract: The hybrid supported metallocene catalyst according to the present disclosure comprises at least one first metallocene compound selected from compounds represented by the following Chemical Formula 1; and at least one second metallocene compound selected from compounds represented by the following Chemical Formula 3, and exhibits high activity in propylene polymerization and is useful for preparing polypropylene having high melt tension through the introduction of long chain branches (LCB) into polypropylene molecules, and a method for preparing a polypropylene using the same, wherein all the variables are described herein.
    Type: Grant
    Filed: August 14, 2020
    Date of Patent: March 25, 2025
    Assignee: LG Chem, Ltd.
    Inventors: Sanghoon Lee, Sangeun An, Seok Hwan Kim, Daesik Hong, Donghyeon Gwon
  • Patent number: 12252576
    Abstract: The present disclosure relates to a process for producing linear alpha olefins in high yield carried out by oligomerization of ethylene in the presence of a novel catalyst composition. The catalyst composition includes Zirconium compound, an organoaluminum compound, and at least one Lewis base selected from cyclic and acyclic ethers (i.e., di-n-butyl ether and diethyl ether). The process for oligomerization of ethylene is carried out in an inert organic solvent in the presence of said catalyst composition. The process as disclosed herein provides significantly high activity of the said catalyst composition resulting in high yield of the alpha olefins (>95 wt. %) as the product and significantly minimum polymer as by-product. The process provides higher yield of C6-C10 fraction with >60 wt. %.
    Type: Grant
    Filed: November 23, 2022
    Date of Patent: March 18, 2025
    Assignee: Indian Oil Corporation Limited
    Inventors: Sukhdeep Kaur, Rashmi Rani, Gurmeet Singh, Dheer Singh, Anju Chopra, Gurpreet Singh Kapur, Sankara Sri Venkata Ramakumar
  • Patent number: 12252574
    Abstract: Embodiments of this disclosure are directed to catalyst systems comprising a metal-ligand complex according to formula (I):
    Type: Grant
    Filed: October 10, 2023
    Date of Patent: March 18, 2025
    Assignee: Dow Global Technologies LLC
    Inventors: Ruth Figueroa, Robert D. Grigg, Jerzy Klosin, Tulaza Vaidya, Carl N. Iverson
  • Patent number: 12252562
    Abstract: A method for producing an ethylene-acrylic acid copolymer may minimize the neck-in phenomenon of the strand by discharging the copolymer strand by controlling the discharging temperature of the produced copolymer to be 200 to 300° C., has excellent workability, processability, and moldability, and melt index (MI) is easy to control. In addition, the ethylene-acrylic acid copolymer produced by this method has the effect of having high melt tension.
    Type: Grant
    Filed: March 15, 2022
    Date of Patent: March 18, 2025
    Assignees: SK Innovation Co., Ltd., SK Geo Centric Co., Ltd.
    Inventors: Sang Ha Son, Wan Ju Jeong, Doh Yeon Park
  • Patent number: 12252573
    Abstract: The polymerization process of this disclosure includes includes polymerizing ethylene and one or more olefins in the presence of a catalyst system under olefin polymerization conditions to form an ethylene-based polymer. The catalyst system comprising a metal-ligand complex according to formula (I).
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: March 18, 2025
    Assignee: Dow Global Technologies LLC
    Inventors: David Koenigs, David D. Devore, Brad C. Bailey, Endre Szuromi, Robert D. Grigg, David M. Pearson, Nolan T. McDougal, John B. Etienne, Sukrit Mukhopadhyay
  • Patent number: 12240923
    Abstract: A process for preparing an ethylene polymer in a suspension polymerization including the steps of separating the formed suspension of ethylene polymer particles in a solid-liquid separator into wet ethylene polymer particles and mother liquor, transferring a part of the mother liquor into a work-up section including an evaporator for producing a wax-depleted portion of the mother liquor, a diluent distillation unit for producing isolated diluent from the wax-depleted portion of the mother liquor, and a wax removal unit operated by direct steam distillation for producing a gaseous hydrocarbon/steam mixture which is condensed and then separated into an aqueous phase and a hydrocarbon phase, wherein a first part of the hydrocarbon phase is transferred to the diluent distillation unit without passing the evaporator for producing the wax-depleted portion of the mother liquor.
    Type: Grant
    Filed: May 28, 2020
    Date of Patent: March 4, 2025
    Assignee: Basell Polyolefine GmbH
    Inventors: Peter Rohrbach, Jürgen Perzlmeier, Elke Damm, Harald Prang
  • Patent number: 12221509
    Abstract: Provided is a novel tetraarylborate compound, a catalyst composition including the same, and a method for preparing an ethylene homopolymer or an ethylene-?-olefin copolymer using the same. Specifically, the teraarylborate compound having excellent thermal stability, able to be completely dissolved in an aliphatic hydrocarbon-based solvent to facilitate the operation of commercial processes and effectively inducing the activation of a single active site catalyst, may be used as a catalyst activator to provide an ethylene-based copolymer selected from a high molecular weight ethylene homopolymer and ethylene-?-olefin copolymer having high catalyst activity.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: February 11, 2025
    Assignee: Sabic SK Nexlene Company Pte. Ltd.
    Inventors: Dongcheol Shin, Yeonock Oh, Miji Kim
  • Patent number: 12221508
    Abstract: Catalyst systems for olefin polymerization include a metal-ligand complex of a general formula (I). The metal-ligand complex of formula (I) is a transition metal complex of titanium, zirconium, or hafnium, in which the transition metal is coordinated with a biaryl phenoxy ligand structure. Olefin polymerization processes include contacting ethylene and optionally one or more (C3-C12) alpha-olefins in the presence of the catalyst system to produce an ethylene-based polymer or copolymer.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: February 11, 2025
    Assignee: Dow Global Technologies LLC
    Inventors: Andrew M. Camelio, Brad C. Bailey, Robert D J Froese, Sukrit Mukhopadhyay, David D. Devore, Jerzy Klosin
  • Patent number: 12221499
    Abstract: The present invention relates to a catalyst for olefin polymerization. Specifically, the present invention relates to a hybrid catalyst, which is capable of preparing a polyolefin, particularly a linear low-density polyethylene, which has excellent processability and is capable of providing a film having good mechanical and optical properties.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: February 11, 2025
    Assignee: HANWHA SOLUTIONS CORPORATION
    Inventors: Yujeong Jeong, Ahreum Kim, Junho Seo, Munhee Lee
  • Patent number: 12215181
    Abstract: Embodiments include activators having a structure according to formula (I).
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: February 4, 2025
    Assignee: Dow Global Technologies LLC
    Inventors: Todd D. Senecal, Sukrit Mukhopadhyay, Richard J. Keaton, Jerzy Klosin, Rafael Huacuja, David M. Pearson, William H. H. Woodward
  • Patent number: 12209176
    Abstract: The copolymerization of ethylene with a cyclic mono olefin (such as norbornene) is conducted in the presence of a catalyst system comprising a bridged hafnocene catalyst and a three part activator. The catalyst system provides excellent activity at high polymerization temperatures. Copolymers produced according to this invention have unique microstructure (with methyl branching being observed) and unique rheology.
    Type: Grant
    Filed: October 9, 2023
    Date of Patent: January 28, 2025
    Assignee: NOVA Chemicals (International) S.A.
    Inventors: Qinyan Wang, XiaoChuan Wang, Peter Zoricak, Steven Clemens, Brian Molloy
  • Patent number: 12161987
    Abstract: A system and method including providing a feed having alkyl-bridged multi-aromatic compounds to a tubular reactor, heating the tubular reactor, and cleaving an alkyl bridge of the alkyl-bridged multi-aromatic compounds.
    Type: Grant
    Filed: August 17, 2021
    Date of Patent: December 10, 2024
    Assignee: Saudi Arabian Oil Company
    Inventors: Omer Refa Koseoglu, Robert Peter Hodgkins
  • Patent number: 12162968
    Abstract: A process for making a poly alpha-olefin (PAO) having a relatively high vinylidene content (or combined vinylidene and tri-substituted vinylene content) and a relatively low vinyl and/or di-substituted vinylene content, as well as a relatively low molecular weight. The process includes: contacting a feed containing a C2-C32 alpha-olefin with a catalyst system comprising activator and a bis-cyclopentadienyl metallocene compound, typically a cyclopentadienyl-benzindenyl group 4 transition metal compound.
    Type: Grant
    Filed: May 4, 2023
    Date of Patent: December 10, 2024
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Jian Yang, Jo Ann M. Canich, Hua Zhou, Jennifer L Rapp
  • Patent number: 12152101
    Abstract: Disclosed are support-activators and catalyst compositions comprising the support-activators for polymerizing olefins in which the support-activator includes clay heteroadduct, prepare from a colloidal phyllosilicate such as a colloidal smectite clay, which is chemically-modified with a heterocoagulation agent. By limiting the amount of heterocoagulation reagent relative to the colloidal smectite clay as described herein, the smectite heteroadduct support-activator is a porous and amorphous solid which can be readily isolated from the resulting slurry by a conventional filtration process, and which can activate metallocenes and related catalysts toward olefin polymerization. Related compositions and processes are disclosed.
    Type: Grant
    Filed: October 11, 2023
    Date of Patent: November 26, 2024
    Assignee: FORMOSA PLASTICS CORPORATION, U.S.A.
    Inventors: Michael D Jensen, Kevin Chung, Daoyong Wang, Wei-Chun Shih, Guangxue Xu, Chih-Jian Chen, Charles R. Johnson, II, Mary Lou Cowen
  • Patent number: 12139646
    Abstract: Provided is a compound represented by Formula (1) given below. (In the formula, R1 represents a hydrogen atom or a methyl group, R2 represents a hydrogen atom, a phenyl group, a C1 to 8 alkyl group, or a C1 to 4 perfluoroalkyl group, X1 represents a hydrogen atom or a hydroxy group, Y1 represents a C1 to 9 alkylene group containing a fluorine atom or a C1 to 9 alkylene group containing no fluorine atom, and n1 is an integer from 0 to 3.).
    Type: Grant
    Filed: May 7, 2021
    Date of Patent: November 12, 2024
    Assignee: NIKON CORPORATION
    Inventors: Yoshihiro Someya, Masayuki Shijo
  • Patent number: 12139564
    Abstract: A process or apparatus for producing polyethylene with improved film thinning and handleability involves polymerizing high-pressure ethylene using an autoclave-type reactor in the presence of a polymerization initiator. The reaction zone of the reactor has at least two different temperature sections; the polymerization initiator and the ethylene are supplied to the upstream temperature section in the reaction zone and the ethylene is polymerized to generate polyethylene; unreacted ethylene and the polyethylene generated at the upstream temperature section in the reactor flow into the downstream temperature section in communication with the upstream temperature section, so that additional polyethylene is generated at the downstream temperature section. A difference (?T [° C.]) between a temperature (T1 [° C.]) of the temperature section positioned upstream and a temperature (T2 [° C.
    Type: Grant
    Filed: November 14, 2023
    Date of Patent: November 12, 2024
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Kensuke Naraki, Toshihiko Manami