Patents by Inventor David R. Wilson
David R. Wilson 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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Patent number: 11912822Abstract: A method of producing a polyether polyol includes reacting a low molecular weight initiator with ethylene oxide in the presence of a polymerization catalyst, and the low molecular weight initiator has a nominal hydroxyl functionality at least 2. The polymerization catalyst is a Lewis acid catalyst having the general formula M(R1)1(R2)1(R3)1(R4)0 or 1, whereas M is boron, aluminum, indium, bismuth or erbium, R1, R2, R3, and R4 are each independent, R1 includes a fluoroalkyl-substituted phenyl group, R2 incudes a fluoroalkyl-substituted phenyl group or a fluoro/chloro-substituted phenyl group, R3 includes a fluoroalkyl-substituted phenyl group or a fluoro/chloro-substituted phenyl group, and optional R4 includes a functional group or functional polymer group, R1 being different from at least one of R2 and R3.Type: GrantFiled: September 14, 2018Date of Patent: February 27, 2024Assignee: Dow Global Technologies LLCInventors: Arjun Raghuraman, William H. Heath, Sukrit Mukhopadhyay, Heather A. Spinney, David R. Wilson
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Patent number: 11896965Abstract: The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.Type: GrantFiled: October 14, 2022Date of Patent: February 13, 2024Assignee: Dow Global Technologies LLCInventors: Jerzy Klosin, Kara A. Milbrandt, Scott D. Boelter, David R. Wilson, Mari S. Rosen, Dean M. Welsh, Peter M. Margl, Kyoung Moo Koh, David M. Pearson, Rafael Huacuja
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Publication number: 20230132484Abstract: Processes of polymerizing olefin monomers using catalyst systems and catalysts systems that include a procatalyst having a structure according to formula (I).Type: ApplicationFiled: March 31, 2021Publication date: May 4, 2023Applicant: Dow Global Technologies LLCInventors: Alex J. Nett, Heather A. Spinney, Todd D. Senecal, David R. Wilson, Robert DJ Froese, Alejandro J. Garza Gonzalez
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Publication number: 20230129371Abstract: Processes of polymerizing olefin monomers using catalyst systems and catalysts systems that include a procatalyst having a structure according to formula (I):Type: ApplicationFiled: March 31, 2021Publication date: April 27, 2023Applicant: Dow Global Technologies LLCInventors: Alex J. Nett, Heather A. Spinney, Todd D. Senecal, David R. Wilson, Robert DJ Froese, Alejandro J. Garza Gonzalez
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Publication number: 20230112954Abstract: The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.Type: ApplicationFiled: October 14, 2022Publication date: April 13, 2023Applicant: Dow Global Technologies LLCInventors: Jerzy Klosin, Kara A. Milbrandt, Scott D. Boelter, David R. Wilson, Mari S. Rosen, Dean M. Welsh, Peter M. Margl, Kyoung Moo Koh, David M. Pearson, Rafael Huacuja
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Patent number: 11623209Abstract: The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.Type: GrantFiled: February 11, 2022Date of Patent: April 11, 2023Assignee: Dow Global Technologies LLCInventors: Jerzy Klosin, Kara A. Milbrandt, Scott D. Boelter, David R. Wilson, Mari S. Rosen, Dean M. Welsh, Peter M. Margl, Kyoung Moo Koh, David M. Pearson, Rafael Huacuja
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Patent number: 11542350Abstract: Embodiments of the disclosure include processes of polymerizing olefins. The process includes contacting ethylene and a (C3-C40)alpha-olefin comonomer in the presences of a catalyst system. The catalyst system comprises a procatalyst and a bimetallic activator complex. The bimetallic activator complex comprises an anion and a countercation, and the anion has a structure according to formula (I).Type: GrantFiled: March 22, 2019Date of Patent: January 3, 2023Assignee: Dow Global Technologies LLCInventors: Richard J. Keaton, Rafael Huacuja, David R. Wilson, Jerzy Klosin, David M. Pearson, Todd D. Senecal, Sukrit Mukhopadhyay, William H. H. Woodward
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Patent number: 11491474Abstract: The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.Type: GrantFiled: April 16, 2021Date of Patent: November 8, 2022Assignee: Dow Global Technologies LLCInventors: Jerzy Klosin, Kara A. Milbrandt, Scott D. Boelter, David R. Wilson, Mari S. Rosen, Dean M. Welsh, Peter M. Margl, Kyoung Moo Koh, David M. Pearson, Rafael Huacuja
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Patent number: 11479642Abstract: A method of producing a polyether polyol that includes reacting a low molecular weight initiator with one or more monomers in the presence of a polymerization catalyst, the low molecular weight initiator having a number average molecular weight of less than 1,000 g/mol and a nominal hydroxyl functionality at least 2, the one or more monomers including at least one selected from propylene oxide and butylene oxide, and the polymerization catalyst being a Lewis acid catalyst having the general formula M(R1)1(R2)1(R3)1(R4)0 or 1. Whereas, M is boron, aluminum, indium, bismuth or erbium, R1, R2, and R3 each includes a same fluoroalkyl-substituted phenyl group, and optional R4 includes a functional group or functional polymer group. The method further includes forming a polyether polyol having a number average molecular weight of greater than the number average molecular weight of the low molecular weight initiator in the presence of the Lewis acid catalyst.Type: GrantFiled: September 14, 2018Date of Patent: October 25, 2022Assignees: Dow Global Technologies LLC, Northwestern UniversityInventors: Arjun Raghuraman, William H. Heath, Sukrit Mukhopadhyay, Heather A. Spinney, David R. Wilson, Anthony P. Gies, Manjiri R. Paradkar, Justin M. Notestein, SonBinh T. Nguyen
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Publication number: 20220332858Abstract: Processes of polymerizing olefin monomers using catalyst systems and catalysts systems that include a procatalyst having a structure according to formula (I): (I).Type: ApplicationFiled: August 18, 2020Publication date: October 20, 2022Applicants: Dow Global Technologies LLC, California Institute of TechnologyInventors: Theodor Agapie, Shuoyan Xiong, Brad C. Bailey, Heather A. Spinney, Alex J. Nett, David R. Wilson, Jerzy Klosin
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Patent number: 11447586Abstract: Embodiments of this disclosure include processes of polymerizing olefins, the process comprising contacting ethylene and a (C3-C40)alpha-olefin comonomer in the presence of a catalyst system, the catalyst system comprising a Group IV metal-ligand complex and an ionic metallic activator complex, the ionic metallic activator complex comprising an anion and a countercation, the anion having a structure according to formula (I):formula (I)Type: GrantFiled: March 26, 2019Date of Patent: September 20, 2022Assignee: Dow Global Technologies LLCInventors: Richard J. Keaton, Rafael Huacuja, David R. Wilson, Jerzy Klosin, David M. Pearson, Todd D. Senecal, Sukrit Mukhopadhyay, William H. H. Woodward
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Publication number: 20220251283Abstract: A method of producing a polyether alcohol that includes feeding an initiator into a reactor, feeding one or more monomers into the reactor, feeding a polymerization catalyst into the reactor, the polymerization catalyst being a Lewis acid catalyst having a general formula M(R1)1(R2)1(R3)1(R4)0 or 1, separate from feeding the initiator into the reactor, feeding a hydrogen bond acceptor additive into the reactor, the hydrogen bond acceptor additive being a C2 to C20 organic molecule having at least two hydroxyl groups, of which two hydroxyl groups are situated in 1,2-, 1,3-, or 1,4- positions on the organic molecule, and allowing the initiator to react with the one or more monomers in the presence of the polymerization catalyst and the hydrogen bond acceptor additive to form a polyether alcohol having a number average molecular weight greater than a number average molecular weight of the initiator.Type: ApplicationFiled: February 14, 2020Publication date: August 11, 2022Applicants: Dow Global Technologies LLC, Northwestern University, Northwestern UniversityInventors: Mihir Bhagat, Charmaine Bennett, Youlong Zhu, SonBinh T. Nguyen, Linda Broadbelt, Justin M. Notestein, Matthew E. Belowich, Arjun Raghuraman, William H. Heath, Sukrit Mukhopadhyay, Heather A. Spinney, David R. Wilson
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Publication number: 20220176363Abstract: The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.Type: ApplicationFiled: February 11, 2022Publication date: June 9, 2022Applicant: Dow Global Technologies LLCInventors: Jerzy Klosin, Kara A. Milbrandt, Scott D. Boelter, David R. Wilson, Mari S. Rosen, Dean M. Welsh, Peter M. Margl, Kyoung Moo Koh, David M. Pearson, Rafael Huacuja
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Patent number: 11260381Abstract: The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.Type: GrantFiled: December 3, 2020Date of Patent: March 1, 2022Assignee: Dow Global Technologies LLCInventors: Jerzy Klosin, Kara A. Milbrandt, Scott D. Boelter, David R. Wilson, Mari S. Rosen, Dean M. Welsh, Peter M. Margl, Kyoung Moo Koh, David M. Pearson, Rafael Huacuja
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Patent number: 11242415Abstract: Embodiments are directed to a catalyst system comprising metal ligand complexes and processes for polyolefin polymerization using the metal ligand complex having the following structure: where X is selected from the group consisting of —ORX or NRX2.Type: GrantFiled: September 19, 2018Date of Patent: February 8, 2022Assignee: Dow Global Technologies LLCInventors: Arkady L. Krasovskiy, David R. Wilson, Tulaza Vaidya, Edmund M. Carnahan, Philip P. Fontaine, Carl N. Iverson
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Publication number: 20220033567Abstract: Hydroxyl-containing copolymers of butylene oxide and ethylene oxide having a hydroxyl equivalent weight of at least 150, an average of 1.8 to 6 hydroxyl groups per molecule of which hydroxyl groups at least 70% are primary hydroxyl groups and an oxyethylene content of no greater than 10% by weight based on the weight of the copolymer, are useful for making polyurethanes. These polyols are characterized by high reactivity and fast curing times. Polyurethanes made using these polyols have excellent mechanical properties and are highly hydrophobic.Type: ApplicationFiled: September 17, 2019Publication date: February 3, 2022Inventors: Kshitish A. Patankar, Arjun Raghuraman, Thomas P. Willumstad, Mark F. Sonnenschein, Jody Henning, Heather A. Spinney, David R. Wilson, Sukrit Mukhopadhyay
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Publication number: 20220033565Abstract: Polyurethanes are made in a one-shot process from one or more polyols having a hydroxyl equivalent weight of at least 350, wherein at least 50% of the weight of iii) is a hydroxyl-containing polymer of propylene oxide, the hydroxyl-containing polymer of propylene oxide having a hydroxyl equivalent weight of at least 350, an average of 1.8 to 3 hydroxyl groups per molecule of which hydroxyl groups 40 to 70% are primary hydroxyl groups, an oxyethylene content of no greater than 10% by weight based on the weight of the polymer and a polydispersity of 1.175 or less. The polyurethanes exhibit excellent mechanical properties, are highly hygroscopic and cured rapidly.Type: ApplicationFiled: September 17, 2019Publication date: February 3, 2022Inventors: Kshitish A. Patankar, Arjun Raghuraman, Thomas P. Willumstad, Mark F. Sonnenschein, Jody Henning, Heather A. Spinney, David R. Wilson, Sukrit Mukhopadhyay, William H. Heath
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Patent number: 11198760Abstract: A method of producing a polyether polyol that includes reacting a low molecular weight initiator with ethylene oxide in the presence of a polymerization catalyst, the low molecular weight initiator having a number average molecular weight of less than 1,000 g/mol and a nominal hydroxyl functionality at least 2, and the polymerization catalyst being a Lewis acid catalyst having the general formula M(R1)1(R2)1(R3)1(R4)0 or 1. Whereas, M is boron, aluminum, indium, bismuth or erbium, R1, R2, and R3 each includes a same fluoroalkyl-substituted phenyl group, and optional R4 includes a functional group or functional polymer group. R1, R2, and R3 are the same fluoroalkyl-substituted phenyl group. The method further includes forming a polyether polyol having a number average molecular weight of greater than the number average molecular weight of the low molecular weight initiator in the presence of the Lewis acid catalyst.Type: GrantFiled: September 14, 2018Date of Patent: December 14, 2021Assignees: Dow Global Technologies LLC, Northwestern UniversityInventors: Arjun Raghuraman, William H. Heath, Sukrit Mukhopadhyay, Heather A. Spinney, David R. Wilson, Justin M. Notestein, SonBinh T. Nguyen
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Patent number: 11186683Abstract: A method of producing an alcohol ethoxylate surfactant or lubricant includes reacting a low molecular weight initiator with ethylene oxide in the presence of a polymerization catalyst, the low molecular weight initiator having a nominal hydroxyl functionality at least 1, and the polymerization catalyst being a Lewis acid catalyst having the general formula M(R1)1(R2)1(R3)1(R4)0 or 1, whereas M is boron, aluminum, indium, bismuth or erbium, R1, R2 and R3 each includes a same fluoroalkyl-substituted phenyl group, and optional R4 includes a functional group or functional polymer group. R1, R2, and R3 are the same fluoroalkyl-substituted phenyl group. The method further includes forming the alcohol ethoxylate surfactant or lubricant having a number average molecular weight of greater than the number average molecular weight of the low molecular weight initiator in the presence of the Lewis acid catalyst.Type: GrantFiled: September 14, 2018Date of Patent: November 30, 2021Assignees: Dow Global Technologies LLC, Northwestern UniversityInventors: Arjun Raghuraman, William H. Heath, Bruce D. Hook, Wanglin Yu, Sukrit Mukhopadhyay, Heather A. Spinney, David R. Wilson, Justin M. Notestein, SonBinh T. Nguyen
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Publication number: 20210268487Abstract: The invention relates to oligomerization of olefins, such as ethylene, to higher olefins, such as a mixture of 1-hexene and 1-octene, using a catalyst system that comprises a) a source of chromium b) one or more activators and c) a phosphacycle-containing ligating compound. Additionally, the invention relates to a phosphacycle-containing ligating compound and a process for making said compound.Type: ApplicationFiled: April 16, 2021Publication date: September 2, 2021Applicant: Dow Global Technologies LLCInventors: Jerzy Klosin, Kara A. Milbrandt, Scott D. Boelter, David R. Wilson, Mari S. Rosen, Dean M. Welsh, Peter M. Margl, Kyoung Moo Koh, David M. Pearson, Rafael Huacuja