Patents Examined by Yun Qian
  • Patent number: 10933409
    Abstract: Disclosed is a novel transition metal complex containing N-heterocyclic carbene and a sulfonamide group, or N-heterocyclic carbene and an amide group, and application thereof, the traquesnsition metal complex having a wider range of general purposes in olefin metathesis and being able to be variably controlled in reactivity.
    Type: Grant
    Filed: January 25, 2017
    Date of Patent: March 2, 2021
    Inventors: Soon Hyeok Hong, Gunsoon Kim, Gitaek Song
  • Patent number: 10926248
    Abstract: An especially robust compound and its derivative metal complexes that are approximately one hundred-fold superior in catalytic performance to the previously invented TAML analogs is provided having the formula: wherein Y1, Y2, Y3 and Y4 are oxidation resistant groups which are the same or different and which form 5- or 6-membered rings with a metal, M, when bound to D; at least one Y incorporates a group that is significantly more stable towards nucleophilic attack than the organic amides of TAML activators; D is a metal complexing donor atom, preferably N; each X is a position for addition of a labile Lewis acidic substituent such as (i) H, deuterium, (ii) Li, Na, K, alkali metals, (iii) alkaline earth metals, transition metals, rare earth metals, which may be bound to one or more than one D, (iv) or is unoccupied with the resulting negative charge being balanced by a nonbonded countercation; at least one Y may contain a site that is labile to acid dissociation, providing a mechanism for shortening co
    Type: Grant
    Filed: September 22, 2016
    Date of Patent: February 23, 2021
    Inventors: Terrence James Collins, Matthew Alan DeNardo, Genoa Rose Warner, Scott Wallace Gordon-Wylie, William Chadwick Ellis, Yogesh Somasundar
  • Patent number: 10926249
    Abstract: The invention describes phospho-amino pincer-type ligands, metal complexes thereof, and catalytic methods comprising such metal complexes for conversion of carbon dioxide to methanol, conversion of aldehydes into alcohols, conversion of aldehydes in the presence of a trifluoromethylation agent into trifluorinated secondary alcohols, cycloaddition of carbon dioxide to an epoxide to provide cyclic carbonates or preparation of an amide from the combination of an alcohol and an amine.
    Type: Grant
    Filed: July 31, 2019
    Date of Patent: February 23, 2021
    Inventors: Kuo-Wei Huang, Qianyi Zhao
  • Patent number: 10927195
    Abstract: The present invention provides an olefin coordination polymerization catalyst and use thereof. The composition of the raw materials of the olefin coordination polymerization catalyst comprises: a main catalyst and a cocatalyst, wherein a molar ratio of the transition metal halide in the main catalyst to the cocatalyst is 1:10-500; and the composition of the raw materials of the main catalyst comprises a magnesium compound, a transition metal halide, an alcohol having 2 to 15 carbon atoms, and a star-shaped organosiloxane compound in a molar ratio of 1:1-40:0.01-10:0.001-10; and the cocatalyst comprises an organoaluminum compound. The above olefin coordination polymerization catalyst is used as a catalyst for ethylene polymerization, propylene polymerization, and copolymerization of ethylene or propylene with an ?-olefin. The olefin polymerization catalyst of the present invention has good catalytic activity.
    Type: Grant
    Filed: October 12, 2018
    Date of Patent: February 23, 2021
    Assignee: PetroChina Company Limited
    Inventors: Jianjun Yi, Mingge Zhang, Hongming Li, Tianxu Sun, Yuan Yuan, Yisen Wang, Qigu Huang, Runcong Zhang, Jing Wang, Yanpei Nie
  • Patent number: 10913808
    Abstract: The present disclosure provides a supported catalyst system and process for use thereof. In particular, the catalyst system includes an unbridged metallocene compound, an additional unbridged metallocene compound having a structure different than the first unbridged metallocene compound, a support material and an activator. The catalyst system may be used for preparing polyolefins.
    Type: Grant
    Filed: June 22, 2018
    Date of Patent: February 9, 2021
    Assignee: ExxonMobil Chemical Patents Inc.
    Inventors: Matthew W. Holtcamp, Laughlin G. McCullough, Matthew S. Bedoya, David F. Sanders, Charles J. Harlan, Ching-Tai Lue, Subramaniam Kuppuswamy
  • Patent number: 10913055
    Abstract: A hydroformylation catalyst having excellent catalytic activity and stability, a composition including the hydroformylation catalyst, and a method of preparing an aldehyde using the hydroformylation catalyst, wherein, when hydroformylation of an olefin compound is performed in the presence of the hydroformylation catalyst to prepare an aldehyde, the normal/iso (n/i) ratio of the prepared aldehyde is lowered, and synthesis gas yield is increased.
    Type: Grant
    Filed: July 4, 2017
    Date of Patent: February 9, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Mi Young Kim, Sung Shik Eom, Dong Hyun Ko, Da Won Jung, Tae Yun Kim, Min Ji Choi
  • Patent number: 10894802
    Abstract: The present invention provides novel transition-metal precatalysts that are useful in preparing active coupling catalysts. In certain embodiments, the precatalysts of the invention are air-stable and moisture-stable. The present invention further provides methods of making and using the precatalysts of the invention.
    Type: Grant
    Filed: October 7, 2015
    Date of Patent: January 19, 2021
    Assignee: Yale University
    Inventors: Nilay Hazari, Patrick Melvin, Damian Hruszkewycz
  • Patent number: 10888854
    Abstract: Catalytic compositions comprising permethylpentalene based metallocene complexes supported on solid methylaluminoxane are disclosed. The compositions are effective catalysts/initiators in the polymerisation of olefins. Also disclosed are uses of the compositions in olefin polymerisation.
    Type: Grant
    Filed: October 4, 2016
    Date of Patent: January 12, 2021
    Assignee: Oxford University Innovation Limited
    Inventors: Dermot O'Hare, Jean-Charles Buffet, Zoe Turner, Duncan Fraser
  • Patent number: 10889662
    Abstract: Provided are a novel metallocene-supported catalyst and a method of preparing a polyolefin using the same. The metallocene-supported catalyst according to the present disclosure may be used in the preparation of polyolefins, it may have excellent activity and excellent reactivity with comonomers, and it may prepare olefinic polymers having a high molecular weight and a low molecular weight.
    Type: Grant
    Filed: December 14, 2015
    Date of Patent: January 12, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Eun Young Shin, Heon Yong Kwon, Se Young Kim, Hyun Jee Kwon, Dae Sik Hong, Sung Min Lee, Ki Soo Lee
  • Patent number: 10882926
    Abstract: The present invention relates to a method for preparing a catalyst composition for the oligomerization of ethylene and a respective catalyst composition pre-formation unit.
    Type: Grant
    Filed: January 11, 2012
    Date of Patent: January 5, 2021
    Assignee: SABIC Global Technologies B.V.
    Inventors: Anina Wohl, Wolfgang Muller, Heinz Bolt, Andreas Meiswinkel, Uwe Rosenthal, Bernd Muller, Normen Peulecke, Christian Thaller, Marco Harff, Stephan Peitz, Fuad Mosa, Mohammed H. Al-Hazmi, Shahid Azam
  • Patent number: 10882924
    Abstract: The present invention relates to a procatalyst comprising the compound represented by formula A as an internal electron donor, Formula A wherein R is hydrogen or a methyl group, N is nitrogen atom; O is oxygen atom; and C is carbon atom. The present invention also relates to a process for preparing said polymerization procatalyst and to a polymerization catalyst system comprising said procatalyst, a co-catalyst and optionally an external electron donor. Furthermore, the present invention relates to a polyolefin obtainable by the process according to the present invention and to the use of the compound of formula A as in internal electron donor in catalysts for polymerization of olefins.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: January 5, 2021
    Inventors: Jaiprakash Brijlal Sainani, Akhlaq Moman
  • Patent number: 10882035
    Abstract: Provided herein are palladium (Pd) catalysts with improved performance in biological environments. In particular, formulations, methods of preparations, and storage conditions are provided that provide improved performance of Pd catalysts under protein-rich conditions.
    Type: Grant
    Filed: May 10, 2017
    Date of Patent: January 5, 2021
    Assignee: Promega Corporation
    Inventors: Sergiy Levin, Rachel Friedman Ohana, Thomas Kirkland, Keith Wood
  • Patent number: 10875818
    Abstract: Disclosed herein are a chromium compound represented by Formula 1a or 1c and a catalyst system including the same, exhibiting superior catalytic activity in an olefin trimerization reaction: [{CH3(CH2)3CH(CH2CH3)CO2}2Cr(OH)]??[Formula 1a] [{CH3(CH2)3CH(CH2CH3)CO2}2Cr(OH)]4.2H2O.
    Type: Grant
    Filed: August 22, 2019
    Date of Patent: December 29, 2020
    Inventors: Bun Yeoul Lee, Jong Yeob Jeon, Dong Sik Park
  • Patent number: 10870105
    Abstract: Metatitanic acid particles have absorption at wavelengths of 450 nm and 750 nm in a visible absorption spectrum, have a surface to which a metal compound having a metal atom and a carbon atom is bonded through an oxygen atom, and satisfy the following inequality: 0.03?A?0.3, wherein A represents a value of {(peak intensity of C—O bond+peak intensity of C?O bond)/(peak intensity of C—C bond+peak intensity of C?C bond} in a C 1s XPS spectrum.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: December 22, 2020
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Takeshi Iwanaga, Hideaki Yoshikawa, Hiroyoshi Okuno, Yasunobu Kashima, Sakae Takeuchi
  • Patent number: 10870103
    Abstract: Disclosed herein is a class of chiral binuclear metal complexes for stereoselective hydrolysis of saccharides and glycosides, and more particular chiral binuclear transition metal complex catalysts that discriminate epimeric glycosides and ?- and ?-glycosidic bonds of saccharides in aqueous solutions at near physiological pHs. The chiral binuclear metal complexes include a Schiff-base-type ligand derived from a chiral diamino building block, and a binuclear transition metal core, each which can be varied for selectivity. The metal core is a Lewis-acidic metal ion, such as copper, zinc, lanthanum, iron and nickel. The Schiff-base may be a reduced or non-reduced Schiff-base derived from aliphatic linear, aliphatic cyclic diamino alcohols or aromatic aldehydes. The ligand can be a penta- or heptadentate ligand derived from pyridinecarbaldehydes, benzaldehydes, linear or cyclic diamines or diamino alcohols.
    Type: Grant
    Filed: March 7, 2017
    Date of Patent: December 22, 2020
    Assignee: Board of Trustees of the University of Arkansas
    Inventor: Susanne Striegler
  • Patent number: 10857530
    Abstract: This invention relates generally to metathesis catalysts and the use of such catalysts in the metathesis of olefins and olefin compounds, more particularly, in the use of such catalysts in Z and E selective olefin metathesis reactions. The invention has utility in the fields of organometallics and organic synthesis.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: December 8, 2020
    Assignees: Umicore AG & Co. KG, California Institute of Technology
    Inventors: Adam M. Johns, T. Patrick Montgomery, Tonia S. Ahmed, Robert H. Grubbs, Richard L. Pederson
  • Patent number: 10843178
    Abstract: Polydentate macrocyclic NHCs (NHC ligands) and related methods are disclosed. Such ligands advantageously facilitate a variety of ligand coordination modes and stabilize oxidation states of metal complexes with a number of coordination environments and shapes. The NHC ligands described herein comprise pendant groups configured to facilitate a variety of reactions including: cis-trans isomerization, proton shuttling and facilitating changes in coordination environments as a result of redox reactions.
    Type: Grant
    Filed: August 20, 2018
    Date of Patent: November 24, 2020
    Assignee: The Board of Trustees of the University of Arkansas
    Inventors: Stefan M. Kilyanek, Rajesh Thapa
  • Patent number: 10843179
    Abstract: The present invention relates to a self assembled catalyst. More particularly, the present invention relates to a self-assembled catalyst of formula (I) comprising supramolecular phosphine and carboxylate ligands, process for preparation thereof and use of said catalyst of formula (I) in olefin polymerization.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: November 24, 2020
    Inventors: Samir Hujur Chikkali, Nilesh Rajesh Mote
  • Patent number: 10836867
    Abstract: The invention provides for a composition comprising elemental platinum and/or at least one platinum-containing compound, where said platinum has a positive oxidation state, and one or more organic compounds comprising carbon atoms, hydrogen atoms and at least two oxygen atoms, wherein at least one of said compounds comprises at least one olefinic unsaturation, characterized in that said composition comprises a proportion of organic compounds comprising carbon atoms, hydrogen atoms and at least two oxygen atoms of from 50.0 to 99.9 wt % and a proportion of the sum of elemental platinum and platinum-containing compounds of from 0.1 to 50.0 wt % in each case based on the composition, with the proviso that the proportions of organic compounds comprising carbon atoms, hydrogen atoms and at least two oxygen atoms and of elemental platinum and platinum-containing compounds sum to at least 90 wt % based on the composition and the proviso that the olefinic unsaturation content is at least 0.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: November 17, 2020
    Assignee: Evonik Operations GmbH
    Inventor: Wilfried Knott
  • Patent number: 10807921
    Abstract: Disclosed herein is a catalyst system comprising (i) a heterocyclic 2-[(phosphinyl)aminyl]imine transition metal compound complex having Structure I wherein T is oxygen or sulfur, R1 and R2 are each independently a C1 to C20 organyl group consisting essentially of inert functional groups, R3 is hydrogen or a C1 to C20 organyl group, L is a C1 to C20 organylene group consisting essentially of inert functional groups, MXp represents a transition metal compound where M is a transition metal, X is a monoanion, and p is an integer from 1 to 6, Q is a neutral ligand, and q ranges from 0 to 6, and (ii) an organoaluminum compound. Also disclosed herein is a process comprising contacting (i) ethylene, (ii) a catalyst system comprising (a) a heterocyclic transition metal compound complex having Structure I as described herein and (b) an organoaluminum compound, and (iii) optionally hydrogen to form an oligomer product.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: October 20, 2020
    Assignee: Chevron Phillips Chemical Company LP
    Inventors: Uriah J. Kilgore, Steven M. Bischof