587 patents
Utility
Ethylene oligomerization processes
16 Jan 24
Process for producing alpha olefins comprising contacting ethylene, a zirconium based catalyst system comprising, a hydrocarbylmetal compound, a chain transfer agent, and optionally an organic reaction medium.
Brooke L. Small, Orson L. Sydora, Ronald D. Knudsen
Filed: 29 Nov 22
Utility
Flexible Production of Benzene and Derivatives Thereof Via Oligomerization of Ethylene
11 Jan 24
Disclosed is oligomerization of ethylene to form 1-hexene in combination with aromatization of the 1-hexene formed by oligomerization, to form benzene.
Ryan W. Snell, Xianghong Hao, Brook L. Small, Bruce E. Kreisher, Scott G. Morrison, Gregory G. Hendrickson
Filed: 5 Jul 23
Utility
Aqueous methods for titanating a chromium/silica catalyst
9 Jan 24
Methods for synthesizing a water-soluble titanium-silicon complex are disclosed herein.
Max P. McDaniel, Kathy S. Clear, Jeremy M. Praetorius
Filed: 31 Jan 22
Utility
Modified supported chromium catalysts and ethylene-based polymers produced therefrom
9 Jan 24
Supported chromium catalysts with an average valence less than +6 and having a hydrocarbon-containing or halogenated hydrocarbon-containing ligand attached to at least one bonding site on the chromium are disclosed, as well as ethylene-based polymers with terminal alkane, aromatic, or halogenated hydrocarbon chain ends.
Masud M. Monwar, Carlos A. Cruz, Jared L. Barr, Max P. McDaniel
Filed: 17 Jul 23
Utility
Dual metallocene polyethylene with improved processability for lightweight blow molded products
9 Jan 24
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 δ 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.
Jeremy M. Praetorius, Yongwoo Inn, Alfred E. Brown, Jr., Brandy Rutledge-Ryal, Carlos A. Cruz, Jay M. Chaffin
Filed: 6 Dec 22
Utility
Methods for Making Supported Chromium Catalysts with Increased Polymerization Activity
4 Jan 24
Methods for making a supported chromium catalyst are disclosed, and can comprise contacting a silica-coated alumina containing at least 30 wt. % silica with a chromium-containing compound in a liquid, drying, and calcining in an oxidizing atmosphere at a peak temperature of at least 650° C. to form the supported chromium catalyst.
Max P. McDaniel, Kathy S. Clear
Filed: 15 Aug 23
Utility
Emission Free Fluff Transfer System and Integrated Nitrogen Cycle
4 Jan 24
A hydrocarbon recovery system is integrated with a fluff transfer system.
Reza KHANKAL, Enrique MANCILLAS, Kamaljeet KAUR, Hetian LI
Filed: 15 Sep 23
Utility
Dual catalyst system for producing polyethylene with long chain branching for blow molding applications
2 Jan 24
Ethylene-based polymers are characterized by a melt index less than 1 g/10 min, a density from 0.94 to 0.965 g/cm3, a Mw from 100,000 to 250,000 g/mol, a relaxation time from 0.5 to 3 sec, and an average number of long chain branches (LCBs) per 1,000,000 total carbon atoms in a molecular weight range of 300,000 to 900,000 g/mol that is greater than that in a molecular weight range of 1,000,000 to 2,000,000 g/mol, or an average number of LCBs per 1,000,000 total carbon atoms in a molecular weight range of 1,000,000 to 2,000,000 g/mol of less than or equal to about 5 and a maximum ratio of ηE/3η at an extensional rate of 0.1 sec−1 from 1.2 to 10.
Jeremy M. Praetorius, Alfred E. Brown, Jr., Yongwoo Inn, Youlu Yu, Qing Yang, Ashish M. Sukhadia
Filed: 10 Jan 22
Utility
Modulating co-monomer selectivity using non-covalent dispersion interactions in group 4 olefin polymerization catalysts
2 Jan 24
This disclosure provides new methods for the design and development of ethylene polymerization catalysts, including Group 4 metallocene catalysts such as zirconocenes, which are based on an improved ability to adjust co-monomer incorporation into the polymer.
Steven M. Bischof, Qing Yang, Orson L. Sydora, Graham R. Lief, Richard M Buck, Daniel H. Ess, Steven M. Maley
Filed: 16 Aug 21
Utility
Oligomerization catalyst system activation and related ethylene oligomerization processes and reaction systems
2 Jan 24
Disclosed herein are oligomerization processes in which ethylene and a catalyst system are first combined for a suitable residence time in an activation vessel, prior to introduction into a reaction zone to oligomerize ethylene to form a desired oligomer product, such as 1-hexene and/or 1-octene.
Steven M. Bischof, James L. Hillier, Uriah J. Kilgore, Steve R. Hutchison, Bruce E. Kreischer, Orson L. Sydora
Filed: 7 Sep 21
Utility
Particle Size Control of Supported Chromium Catalysts In Loop Slurry Polymerization Reactors
28 Dec 23
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 μm, and less than 10 wt. % has a particle size less than 10 μm, can be contacted with an olefin monomer in a loop slurry reactor to produce an olefin polymer.
Max P. McDaniel, Carlton E. Ash, Kathy S. Clear, Eric D. Schwerdtfeger, Carlos A. Cruz, Jeremy M. Praetorius, Youlu Yu
Filed: 8 Sep 23
Utility
Methods of Preparing a Catalyst
28 Dec 23
A method comprising a) drying a support material comprising silica at temperature in the range of from about 150° C. to about 220° C. to form a dried support; b) contacting the dried support with methanol to form a slurried support; c) subsequent to b), cooling the slurried support to a temperature of less than about 60° C. to form a cooled slurried support; d) subsequent to c), contacting the cooled slurried support with a titanium alkoxide to form a titanated support; and e) thermally treating the titanated support by heating to a temperature of equal to or greater than about 150° C. for a time period of from about 5 hours to about 30 hours to remove the methanol and yield a dried titanated support.
Jeremy M. PRAETORIUS, Eric D. SCHWERDTFEGER, Max P. MCDANIEL, Ted H. CYMBALUK, Connor D. BOXELL, Alan L. SOLENBERGER, Kathy S. CLEAR
Filed: 6 Sep 23
Utility
Transition Metal-Catalyzed Production of Alcohol and Carbonyl Compounds From Hydrocarbons
28 Dec 23
Processes for converting a hydrocarbon reactant into an alcohol compound and/or a carbonyl compound are disclosed in which the hydrocarbon reactant and a supported transition metal catalyst—containing molybdenum, tungsten, or vanadium—are irradiated with a light beam at a wavelength in the UV-visible spectrum, optionally in an oxidizing atmosphere, to form a reduced transition metal catalyst, followed by hydrolyzing the reduced transition metal catalyst to form a reaction product containing the alcohol compound and/or the carbonyl compound.
Masud M. Monwar, Jared Barr, Carlos A. Cruz, Kathy S. Clear, Max P. McDaniel, William C. Ellis
Filed: 1 Sep 23
Utility
Processes for Preparing Metallocene-based Catalyst Systems with an Alcohol Compound
28 Dec 23
Methods for preparing metallocene-based catalyst compositions include the steps of contacting an alcohol compound and an organoaluminum compound for a first period of time to form a precontacted mixture, and contacting the precontacted mixture with an activator-support and a metallocene compound for a second period of time to form the catalyst composition.
Qing Yang, Ryan N. Rose, Max P. McDaniel, Zhihui Gu
Filed: 24 Jul 23
Utility
Circular Chemicals or Polymers from Pyrolyzed Plastic Waste and the Use of Mass Balance Accounting to Allow for Crediting the Resultant Products As Circular
21 Dec 23
This disclosure relates to the production of chemicals and plastics using pyrolysis oil from the pyrolysis of plastic waste as a co-feedstock along with a petroleum-based, fossil fuel-based, or bio-based feedstock.
Ronald G. ABBOTT, Scott G. MORRISON, Steven R. HORLACHER, Jamie N. SUTHERLAND, Bruce D. MURRAY, Jacob M. HILBRICH, Charles T. POLITO
Filed: 15 Aug 23
Utility
Use of High Halide-containing Catalyst In Front Reactors to Extend the Life and Selectivity of Reforming Catalyst
21 Dec 23
This disclosure provides processes for reforming hydrocarbons by using a series of adiabatic reactors and catalysts, in which the catalyst(s) in at least one front or upstream catalyst bed or reactor includes a higher fluoride concentration, higher chloride concentration, or both than the respective halide concentrations in the catalysts in one or more downstream catalyst beds or reactors, which has been unexpectedly discovered to extend the useful life and/or the selectivity of the catalyst system.
Cori A. Demmelmaier-Chang, Joseph Bergmeister, III, Vincent D. McGahee, Gabriela D. Alvez-Manoli
Filed: 23 May 23
Utility
Rotary feeder with cleaning nozzles
19 Dec 23
A rotary feeder having a stationary, cylindrical housing having disposed therein a number of injection nozzles, and within which rotate a plurality of vanes about a central axis, wherein pairs of adjacent vanes of the plurality of vanes define wedge volumes, wherein the housing extends a width along the central axis, wherein each of the vanes has a length along the central axis, and wherein the injection nozzles are positioned across the width of the housing, such that a spray pattern of a gas injected via the number of injection nozzles spans substantially the entire length of the vanes.
Andrea L. Hoener, Elena Mathopoullos, Jorge Garza
Filed: 11 Sep 20
Utility
Isomerization of linear olefins with solid acid catalysts and primary esters
19 Dec 23
Isomerized olefin products are produced by contacting an olefin feed containing a C10 to C20 normal alpha olefin, a solid acid catalyst, and a C2 to C15 primary ester to form the isomerized olefin product.
Jeffery C. Gee
Filed: 24 Aug 22
Utility
Ethylene polymerization processes and reactor systems for the production of multimodal polymers using combinations of a loop reactor and a fluidized bed reactor
19 Dec 23
Polymerization processes and reactor systems for producing multimodal ethylene polymers are disclosed in which at least one loop reactor and at least one fluidized bed reactor are utilized.
Joel A. Mutchler, Eric J. Netemeyer, Joseph A. Curren, Michael H. Treptau, Kenneth A. Dooley, Jeffrey S. Lowell, Jeffrey S. Fodor, Scott E. Kufeld
Filed: 1 Feb 22
Utility
Processes for removing carbon disulfide from symmetrical and asymmetrical sulfide product streams
19 Dec 23
Processes for removing carbon disulfide from product streams containing a sulfide compound are performed by contacting the product stream with an alkanolamine and converting the carbon disulfide to a higher boiling point product, thereby reducing or eliminating carbon disulfide from the product stream.
Kenneth M. Lassen, Michael S. Matson, Daniel M. Hasenberg, Dave C. Schwierman
Filed: 18 Jun 20