Patents by Inventor Sun-Chueh Kao
Sun-Chueh Kao has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230250204Abstract: 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 comprises the following formula: wherein each R3 or R4 is independently H, a hydrocarbyl group, a substituted hydrocarbyl group, or a heteroatom group, wherein each R3 or R4 may be the same or different, and each X is independently a leaving group selected from a labile hydrocarbyl, a substituted hydrocarbyl, a heteroatom group, or a divalent radical that links to an R3 group.Type: ApplicationFiled: April 14, 2023Publication date: August 10, 2023Applicant: Univation Technologies, LLCInventors: Sun-Chueh Kao, Francis C. Rix, Ching-Tai Lue, Mark G. Goode, Dongming Li
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Patent number: 10604605Abstract: Catalyst systems and methods for making and using the same are described herein. A catalyst system can include at least three catalysts. The three catalysts include a metallocene catalyst, a first non-metallocene including a ligand complexed to a metal through two or more nitrogen atoms, and a second non-metallocene including a ligand complexed to a metal through one or more nitrogen atoms and an oxygen atom.Type: GrantFiled: December 11, 2018Date of Patent: March 31, 2020Assignee: Univation Technologies, LLCInventors: Juliet Bauer Wagner, Garth R. Giesbrecht, Sun-Chueh Kao, Stephen P. Jaker
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Patent number: 10308742Abstract: Polymers, and systems and methods for making and using the same are described herein. A polymer includes ethylene and at least one alpha olefin having from 4 to 20 carbon atoms. The polymer is formed by a trimmed catalyst system including a supported catalyst including bis(n-propylcyclopentadienyl) hafnium (R1)(R2) and a trim catalyst comprising meso-O(SiMe2Ind)2Zr(R1)(R2), wherein R1 and R2 are each, independently, methyl, chloro, fluoro, or a hydrocarbyl group.Type: GrantFiled: February 10, 2015Date of Patent: June 4, 2019Assignee: Univation Technologies, LLCInventors: Ching-Tai Lue, Francis C. Rix, Timothy M. Boller, Garth R. Giesbrecht, Mark G. Goode, Sun-Chueh Kao, Dongming Li, R. Eric Pequeno, Daniel P. Zilker, Jr.
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Publication number: 20190106519Abstract: Catalyst systems and methods for making and using the same are described herein. A catalyst system can include at least three catalysts. The three catalysts include a metallocene catalyst, a first non-metallocene including a ligand complexed to a metal through two or more nitrogen atoms, and a second non-metallocene including a ligand complexed to a metal through one or more nitrogen atoms and an oxygen atom.Type: ApplicationFiled: December 11, 2018Publication date: April 11, 2019Applicant: Univation Technologies, LLCInventors: Juliet Bauer Wagner, Garth R. Giesbrecht, Sun-Chueh Kao, Stephen P. Jaker
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Patent number: 10174143Abstract: Catalyst systems and methods for making and using the same are described herein. A catalyst system can include at least three catalysts. The three catalysts include a metallocene catalyst, a first non-metallocene including a ligand complexed to a metal through two or more nitrogen atoms, and a second non-metallocene including a ligand complexed to a metal through one or more nitrogen atoms and an oxygen atom.Type: GrantFiled: April 5, 2017Date of Patent: January 8, 2019Assignee: Univation Technologies, LLCInventors: Juliet Bauer Wagner, Garth R. Giesbrecht, Sun-Chueh Kao, Stephen P. Jaker
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Patent number: 9850332Abstract: Polymers, and systems and methods for making and using the same are described herein. A polymer includes ethylene and at least one alpha olefin having from 4 to 20 carbon atoms. The polymer has a melt index ratio (MIR) greater than about 40. The polymer also has a value for Mw1/Mw2 of at least about 2.0, wherein Mw1/Mw2 is a ratio of a weight average molecular weight (Mw) for a first half of a temperature rising elution (TREF) curve from a cross-fractionation (CFC) analysis to an Mw for a second half of the TREF curve. The polymer also has a value for Tw1?Tw2 of less than about ?15° C., wherein Tw1?Tw2 is a difference of a weight average elution temperature (Tw) for the first half of the TREF curve to a Tw for the second half of the TREF curve.Type: GrantFiled: February 10, 2015Date of Patent: December 26, 2017Assignee: Univation Technologies, LLCInventors: Ching-Tai Lue, Francis C. Rix, Timothy M. Boller, Garth R. Giesbrecht, Mark G. Goode, Sun-Chueh Kao, Dongming Li, R. Eric Pequeno, James M. Farley, Daniel P. Zilker, Jr.
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Patent number: 9714305Abstract: Catalyst systems and methods for making and using the same are described herein. A catalyst system can include at least three catalysts. The three catalysts include a metallocene catalyst, a first non-metallocene including a ligand complexed to a metal through two or more nitrogen atoms, and a second non-metallocene including a ligand complexed to a metal through one or more nitrogen atoms and an oxygen atom.Type: GrantFiled: February 21, 2014Date of Patent: July 25, 2017Assignee: Univation Technologies, LLCInventors: Juliet B. Wagner, Garth R. Giesbrecht, Sun-Chueh Kao, Stephen P. Jaker
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Publication number: 20170204208Abstract: Catalyst systems and methods for making and using the same are described herein. A catalyst system can include at least three catalysts. The three catalysts include a metallocene catalyst, a first non-metallocene including a ligand complexed to a metal through two or more nitrogen atoms, and a second non-metallocene including a ligand complexed to a metal through one or more nitrogen atoms and an oxygen atom.Type: ApplicationFiled: April 5, 2017Publication date: July 20, 2017Applicant: Univation Technologies, LLCInventors: Juliet Bauer Wagner, Garth R. Giesbrecht, Sun-Chueh Kao, Stephen P. Jaker
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Patent number: 9593184Abstract: The present invention relates to the use of oxalic acid diamides as modifiers in conjunction with solid Ziegler-Natta type catalyst in processes in which polyolefins such as polypropylene are produced. The modified catalyst compositions produce polypropylene with good productivity and higher sterospecificity than systems without such modification.Type: GrantFiled: October 28, 2014Date of Patent: March 14, 2017Assignee: Formosa Plastics Corporation, USAInventors: Gapgoung Kong, Lei Zhang, Sun Chueh Kao, Chih-Jian Chen
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Publication number: 20160347886Abstract: Polymers, and systems and methods for making and using the same are described herein. A polymer includes ethylene and at least one alpha olefin having from 4 to 20 carbon atoms. The polymer is formed by a trimmed catalyst system including a supported catalyst including bis(n-propylcyclopentadienyl) hafnium (R1)(R2) and a trim catalyst comprising meso-O(SiMe2Ind)2Zr(R1)(R2), wherein R1 and R2 are each, independently, methyl, chloro, fluoro, or a hydrocarbyl group.Type: ApplicationFiled: February 10, 2015Publication date: December 1, 2016Applicant: Univation Technologies, LLCInventors: Ching-Tai Lue, Francis C. Rix, Timothy M. Boller, Garth R. Giesbrecht, Mark G. Goode, Sun-Chueh Kao, Dongming Li, R. Eric Pequeno, Daniel P. Zilker, Jr.
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Publication number: 20160347888Abstract: Polymers, and systems and methods for making and using the same are described herein. A polymer includes ethylene and at least one alpha olefin having from 4 to 20 carbon atoms. The polymer has a melt index ratio (MIR) greater than about 40. The polymer also has a value for Mw1/Mw2 of at least about 2.0, wherein Mw1/Mw2 is a ratio of a weight average molecular weight (Mw) for a first half of a temperature rising elution (TREF) curve from a cross-fractionation (CFC) analysis to an Mw for a second half of the TREF curve. The polymer also has a value for Tw1?Tw2 of less than about ?15° C., wherein Tw1?Tw2 is a difference of a weight average elution temperature (Tw) for the first half of the TREF curve to a Tw for the second half of the TREF curve.Type: ApplicationFiled: February 10, 2015Publication date: December 1, 2016Applicant: Univation Technologies, LLCInventors: Ching-Tai Lue, Francis C. Rix, Timothy M. Boller, Garth R. Giesbrecht, Mark G. Goode, Sun-Chueh Kao, Dongming Li, R. Eric Pequeno, James M. Farley, Daniel P. Zilker, Jr.
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Publication number: 20160347890Abstract: Catalyst systems and methods for making and using the same. A method of polymerizing olefins to produce a polyolefm 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) (C5HcR24)HfX2. The second catalyst compound comprises the following formula: (A), wherein each R3 or R4 is independently H, a hydrocarbyl group, a substituted hydrocarbyl group, or a heteroatom group, wherein each R3 or R4 may be the same or different, and each X is independently a leaving group selected from a labile hydrocarbyl, a substituted hydrocarbyl, a heteroatom group, or a divalent radical that links to an R3 group.Type: ApplicationFiled: February 10, 2015Publication date: December 1, 2016Applicant: Univation Technologies, LLCInventors: Sun-Chueh Kao, Francis C. Rix, Ching-Tai Lue, Mark G. Goode, Dongming Li
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Publication number: 20160115260Abstract: The present invention relates to the use of oxalic acid diamides as modifiers in conjunction with solid Ziegler-Natta type catalyst in processes in which polyolefins such as polypropylene are produced. The modified catalyst compositions produce polypropylene with good productivity and higher sterospecificity than systems without such modification.Type: ApplicationFiled: October 28, 2014Publication date: April 28, 2016Inventors: Gapgoung Kong, Lei Zhang, Sun Chueh Kao, Chih-Jian Chen
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Publication number: 20160024238Abstract: Catalyst systems and methods for making and using the same are described herein. A catalyst system can include at least three catalysts. The three catalysts include a metallocene catalyst, a first non-metallocene including a ligand complexed to a metal through two or more nitrogen atoms, and a second non-metallocene including a ligand complexed to a metal through one or more nitrogen atoms and an oxygen atom.Type: ApplicationFiled: February 21, 2014Publication date: January 28, 2016Applicant: Univation Technologies, LLCInventors: Juliet B. Wagner, Garth R. Giesbrecht, Sun-Chueh Kao, Stephen P. Jaker
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Patent number: 9234060Abstract: Disclosed herein are methods of preparing a catalyst system comprising a spray-dried activator and polymerization processes employing these catalyst systems.Type: GrantFiled: November 6, 2012Date of Patent: January 12, 2016Assignee: Univation Technologies, LLCInventors: Sun-Chueh Kao, Phuong A. Cao, C. Jeff Harlan, Parul A. Khokhani, George Rodriguez, Francis C. Rix, Garth R. Giesbrecht
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Patent number: 9181371Abstract: Described herein are methods comprising contacting one or more olefins with a catalyst system in a polymerization reactor at conditions sufficient to produce a polyolefin, wherein the catalyst system comprises a first metallocene catalyst compound comprising a first transition metal atom, two cyclopentadienyl ligands bound to the first transition metal atom, and two leaving groups bound to the first transition metal atom, wherein at least one leaving group is selected from the group consisting of a halo-phenoxy and a halo-alkoxy; wherein the first metallocene catalyst compound has a catalyst productivity that is at least 20% greater than a comparative metallocene catalyst compound used to produce the same polyolefin, wherein the comparative metallocene catalyst compound is the same as the first metallocene catalyst compound except neither leaving group is a halo-phenoxy or a halo-alkoxy.Type: GrantFiled: November 6, 2012Date of Patent: November 10, 2015Assignee: Univation Technologies, LLCInventors: Lixin Sun, Francis C. Rix, Sun-Chueh Kao, Parul A. Khokhani, Phuong A. Cao
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Publication number: 20150166699Abstract: Disclosed herein are methods of preparing a catalyst system comprising a spray-dried activator and polymerization processes employing these catalyst systems.Type: ApplicationFiled: November 6, 2012Publication date: June 18, 2015Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Sun-Chueh Kao, Phuong A. Cao, C. Jeff Harlan, Parul A. Khokhani, George Rodriguez, Francis C. Rix, Garth R. Giesbrecht
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Publication number: 20140288249Abstract: Described herein are methods comprising contacting one or more olefins with a catalyst system in a polymerization reactor at conditions sufficient to produce a polyolefin, wherein the catalyst system comprises a first metallocene catalyst compound comprising a first transition metal atom, two cyclopentadienyl ligands bound to the first transition metal atom, and two leaving groups bound to the first transition metal atom, wherein at least one leaving group is selected from the group consisting of a halo-phenoxy and a halo-alkoxy; wherein the first metallocene catalyst compound has a catalyst productivity that is at least 20% greater than a comparative metallocene catalyst compound used to produce the same polyolefin, wherein the comparative metallocene catalyst compound is the same as the first metallocene catalyst compound except neither leaving group is a halo-phenoxy or a halo-alkoxy.Type: ApplicationFiled: November 6, 2012Publication date: September 25, 2014Applicant: UNIVATION TECHNOLOGIES, LLCInventors: Lixin Sun, Francis C. Rix, Sun-Chueh Kao, Parul A. Khokhani, Phuong A. Cao
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Patent number: 8835577Abstract: A polymerization catalyst system and polymerization processes using the catalyst systems are disclosed. The polymerization catalyst systems may include a) a first catalyst compound, and b) a second catalyst compound, wherein the first catalyst compound comprises a biphenyl phenol compound having essentially no hydrogen response.Type: GrantFiled: May 14, 2010Date of Patent: September 16, 2014Assignee: Univation Technologies, LLCInventors: Francis C. Rix, Sun-Chueh Kao, Rainer Kolb, Dongming Li, Cesar A. Garcia-Franco
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Patent number: 8742039Abstract: A method for making a polyolefin composition according to one embodiment includes altering the concentration of the chain transfer agent present in the reactor to control the HMW and LMW fractions of the polyolefin composition.Type: GrantFiled: November 19, 2008Date of Patent: June 3, 2014Assignee: Univation Technologies, LLCInventors: Mark B. Davis, Sun-Chueh Kao, Tae Hoon Kwalk