Abstract: A method comprising synthesizing a cyclic organic compound (3) via reaction of an substituted alkene (1) with an unsubstituted or substituted acrylic acid (2) in the presence of a sulfonic acid reagent to make the cyclic organic compound (3) R1(H)C?C(H)R2 (1)
Abstract: Catalyst systems and methods for making and using the same are disclosed. A catalyst composition is provided that includes a catalyst compound supported to form a supported catalyst system, the catalyst compound including: where each of R1, R2, R3, R4, R5, R6, R7 and X are as discussed herein.
Type:
Grant
Filed:
July 30, 2019
Date of Patent:
April 13, 2021
Assignee:
Univation Technologies, LLC
Inventors:
Donna J. Crowther, C. Jeff Harlan, Jackie Lovell, Haiqing Peng
Abstract: A catalyst system including two or more metallocene catalysts and processes for using the same to produce polyolefin polymer compositions are provided. The polyolefin polymer compositions have a good balance of a melt index ratio and normalized melt strength.
Type:
Grant
Filed:
April 11, 2018
Date of Patent:
March 16, 2021
Assignee:
Univation Technologies, LLC
Inventors:
Ching-Tai Lue, Phillip T. Matsunaga, Donna J. Crowther
Abstract: A polymerization catalyst system, a method of using the polymerization catalyst system, and a polymer produced with the catalyst system. The polymerization catalyst system has a non-metallocene catalyst and a metallocene catalyst. The metallocene catalyst has the formula: wherein R1 and R2 are each independently, phenyl, methyl, chloro, fluoro, or a hydrocarbyl group.
Type:
Application
Filed:
November 10, 2020
Publication date:
February 25, 2021
Applicant:
Univation Technologies, LLC
Inventors:
C. Jeff Harlan, Timothy R. Lynn, Fathi David Hussein, Timothy M. Boller
Abstract: A system and method for charging a chromium-based catalyst to a mix vessel; introducing a reducing agent through an entrance arrangement into the mix vessel, and agitating a mixture of the chromium-based catalyst, the reducing agent, and a solvent in the mix vessel to promote contact of the reducing agent with the chromium-based catalyst to give a reduced chromium-based catalyst.
Type:
Application
Filed:
November 10, 2020
Publication date:
February 25, 2021
Applicant:
Univation Technologies, LLC
Inventors:
John H. Moorhouse, Kevin J. Cann, Mark G. Goode, Kevin R. Gross
Abstract: Embodiments of the present disclosure are directed towards methods of adjusting melt index and/or density utilizing a metallocene complex represented by Formula (I): wherein each n-Pr is n-propyl, and each X is independently CH3, CI, Br, or F.
Type:
Application
Filed:
March 20, 2019
Publication date:
February 18, 2021
Applicant:
Univation Technologies, LLC
Inventors:
John F. Szul, E.J. Markel, R. Eric Pequeno, Bruce J. Savatsky
Abstract: Embodiments of the present disclosure are directed towards methods for controlling a polymerization reaction including determining an instantaneous density model for a gas-phase polymerization, and utilizing the instantaneous density model to monitor the polymerization reaction to determine if a threshold instantaneous density is reached.
Type:
Application
Filed:
March 20, 2019
Publication date:
February 18, 2021
Applicant:
Univation Technologies, LLC
Inventors:
John F. Szul, Daniel Thomas, E.J. Markel, R. Eric Pequeno, Bruce J. Savatsky
Abstract: The present disclosure provides for a system and method for producing a polyethylene polymer (PE) that includes measuring a melt flow index (MFI) of the PE, comparing the measured value of the MFI to a predetermined desired range for the MFI, changing a catalyst feed rate to the polymerization reactor based on the compared values of the MFI, where changes in the catalyst feed rate preemptively compensate for subsequent changes in an oxygen flow rate to the polymerization reactor that maintain a predetermined residence time and bring the MFI of the PE into the predetermined desired range for the MFI; and changing the oxygen flow rate to the polymerization reactor thereby maintaining both the predetermined residence time and bringing the MFI of the PE into the predetermined desired range for the MFI. The measuring and comparing steps are repeated to ensure the measured value of the MFI is within the predetermined desired range of the MFI at the predetermined residence time.
Type:
Application
Filed:
October 23, 2020
Publication date:
February 18, 2021
Applicant:
Univation Technologies, LLC
Inventors:
Samuel Bernal, Mark G. Goode, Francois Alexandre, William A. Matthews
Abstract: A film formed from a polyethylene copolymer using a reduced chromium oxide catalyst, ethylene monomers and a co-monomer selected from butene monomers or 1-hexene, where the polyethylene copolymer has a density in the range of from about 0.935 to about 0.950 g/cm3 and an I21/I5 in a range of about 18.0 to about 30.0. The film formed from the polyethylene copolymer has a dart drop impact (g/?m) that significantly greater as compared to a film of the polyethylene copolymer formed using a silyl chromate catalyst in place of the reduced chromium oxide catalyst. A method of making such films is also provided.
Type:
Grant
Filed:
January 23, 2017
Date of Patent:
February 9, 2021
Assignee:
Univation Technologies, LLC
Inventors:
Cliff R. Mure, Dongming Li, Barbara J. Kopp, Mark G. Goode
Abstract: Catalyst systems and methods for making and using the same. A method of polymerizing olefins to produce a polyolefin polymer with a multimodal composition distribution, includes contacting ethylene and a comonomer with a catalyst system. The catalyst system includes a first catalyst compound and a second catalyst compound that are co-supported to form a commonly supported catalyst system. The first catalyst compound includes a compound with the general formula (C5HaR1b)(C5HcR2d)HfX2. The second catalyst compound includes at least one of the following general formulas: In both catalyst systems, the R groups can be independently selected from any number of substituents, including, for example, H, a hydrocarbyl group, a substituted hydrocarbyl group, or a heteroatom group, among others.
Type:
Application
Filed:
October 9, 2020
Publication date:
January 28, 2021
Applicant:
Univation Technologies, LLC
Inventors:
Francis C. Rix, Ching-Tai Lue, C. Jeff Harlan, Laughlin G. McCullough
Abstract: A method including contacting a chromium-based catalyst with a reducing agent in a solvent to lower an oxidation state of at least some chromium in the chromium-based catalyst to give a reduced chromium-based catalyst, drying the reduced chromium-based catalyst at a temperature, and adjusting the temperature to affect the flow index response of the reduced chromium-based catalyst.
Type:
Application
Filed:
October 7, 2020
Publication date:
January 21, 2021
Applicant:
Univation Technologies, LLC
Inventors:
Kevin J. Cann, Mark G. Goode, Kevin R. Gross, John H. Moorhouse
Abstract: Embodiments of the present disclosure are directed towards method for modifying a polymer flow index. As an example, a method for modifying a polymer flow index can include providing monomers to a polymerization reactor, providing a chromium catalyst to the polymerization reactor, and providing an active amount of a flow index modifier to the polymerization reactor, wherein the flow index modifier is selected from carbon dioxide, carbon monoxide, 2,4-hexadiene, and combinations thereof.
Type:
Grant
Filed:
April 17, 2017
Date of Patent:
December 22, 2020
Assignee:
Univation Technologies, LLC
Inventors:
Charles D. Lester, Mark G. Goode, Timothy R. Lynn, Kevin J. Cann, John H. Moorhouse, William Albert Matthews, Kefu Sun, Francois Alexandre
Abstract: A system and method for charging a chromium-based catalyst to a mix vessel; introducing a reducing agent through an entrance arrangement into the mix vessel, and agitating a mixture of the chromium-based catalyst, the reducing agent, and a solvent in the mix vessel to promote contact of the reducing agent with the chromium-based catalyst to give a reduced chromium-based catalyst.
Type:
Grant
Filed:
September 20, 2019
Date of Patent:
December 22, 2020
Assignee:
Univation Technologies, LLC
Inventors:
John H. Moorhouse, Kevin J. Cann, Mark G. Goode, Kevin R. Gross
Abstract: A polymerization catalyst system, a method of using the polymerization catalyst system, and a polymer produced with the catalyst system. The polymerization catalyst system has a non-metallocene catalyst and a metallocene catalyst. The metallocene catalyst has the formula: wherein R1 and R2 are each independently, phenyl, methyl, chloro, fluoro, or a hydrocarbyl group.
Type:
Grant
Filed:
April 15, 2016
Date of Patent:
December 15, 2020
Assignee:
Univation Technologies, LLC
Inventors:
C. Jeff Harlan, Timothy R. Lynn, Fathi David Hussein, Timothy M. Boller
Abstract: Methods for producing polyolefin polymers may use a predictive melt index regression to estimate the melt index of the polyolefin during production based on the composition of the gas phase and, optionally, the concentration of catalyst in the reactor or reactor operating conditions. Such predictive melt index regression may include multiple terms to account for concentration of ICA in the reactor, optionally concentration of hydrogen in the reactor, optionally concentration of comonomer in the reactor, optionally the catalyst composition, and optionally reactor operating conditions. One or more terms may independently be represented by a smoothing function that incorporates a time constant.
Type:
Grant
Filed:
May 13, 2019
Date of Patent:
December 15, 2020
Assignee:
Univation Technologies, LLC
Inventors:
Bruce J. Savatsky, Daniel N. Thomas, Jr., Timothy R. Lynn
Abstract: The present disclosure provides a method of measuring a percent solids content (PSC) of solids by mass in a slurry catalyst composition, where the solids include a catalyst. The method includes obtaining a first time domain (TD) 1H-nuclear magnetic resonance (NMR) spectrum using a time domain (TD)-NMR spectrometer and a test sample of the slurry catalyst composition from which a value of a voltage signal (a) that represents the slurry catalyst composition is determined. A second TD 1H-NMR spectrum using the TD NMR spectrometer is obtained for a neat sample of the suspension liquid for the solids of the slurry catalyst composition, where a value of a voltage signal (b) from the second TD 1H-NMR spectrum that represents the suspension liquid for the solids of the slurry catalyst composition is determined.
Type:
Grant
Filed:
November 15, 2017
Date of Patent:
December 8, 2020
Assignee:
Univation Technologies, LLC
Inventors:
Kishori Deshpande, Gian C. Gobbi, Nathan Rau
Abstract: A method including contacting a chromium-based catalyst with a reducing agent in a solvent to lower an oxidation state of at least some chromium in the chromium-based catalyst to give a reduced chromium-based catalyst, drying the reduced chromium-based catalyst at a temperature, and adjusting the temperature to affect the flow index response of the reduced chromium-based catalyst.
Type:
Grant
Filed:
September 1, 2015
Date of Patent:
November 17, 2020
Assignee:
Univation Technologies, LLC
Inventors:
Kevin J. Cann, Mark G. Goode, Kevin R. Gross, John H. Moorhouse