Patents by Inventor Dihogenes Adriano Pozzer
Dihogenes Adriano Pozzer 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: 20240084054Abstract: Methods of adding a catalyst to a bulk polymerization process may include mixing the catalyst with propylene to form a catalyst mixture that is substantially free of any C20 or greater hydrocarbons, feeding the catalyst mixture into a polymerization reactor, activating the catalyst mixture; and performing a polymerization on the catalyst mixture in the polymerization reactor. Polymers may be formed by polymerization processes that are substantially free of any C20 or greater hydrocarbons.Type: ApplicationFiled: November 21, 2023Publication date: March 14, 2024Applicant: Braskem S.A.Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli
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Publication number: 20240034858Abstract: Methods may include reacting an antistatic agent with at least one alkylaluminum to form an antistatic complex and may further include feeding the antistatic complex into a polymerization process wherein the antistatic agent is an ester of a fatty acid. Methods of using an antistatic agent in a polymerization process may include feeding the antistatic agent into the polymerization process and, subsequently, reacting the antistatic agent with at least one alkylaluminum, wherein the antistatic agent with the at least one alkylaluminum gives an antistatic complex that comprises one or more reaction products between the ester of the fatty acid and the at least one alkylaluminum, wherein the one or more reaction products comprise aluminum soaps.Type: ApplicationFiled: October 10, 2023Publication date: February 1, 2024Applicant: Braskem S.A.Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli, Adriano Giraldi Fisch, Roberto Osório Jimenez
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Patent number: 11866522Abstract: Methods of adding a catalyst to a bulk polymerization process may include mixing the catalyst with propylene to form a catalyst mixture that is substantially free of any C20 or greater hydrocarbons, feeding the catalyst mixture into a polymerization reactor, activating the catalyst mixture; and performing a polymerization on the catalyst mixture in the polymerization reactor. Polymers may be formed by polymerization processes that are substantially free of any C20 or greater hydrocarbons.Type: GrantFiled: December 27, 2019Date of Patent: January 9, 2024Assignee: Braskem S.A.Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli
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Patent number: 11820879Abstract: Methods may include reacting an antistatic agent with at least one alkylaluminum to form an antistatic complex, and may further include feeding the antistatic complex into a polymerization process. Methods of using an antistatic agent in a polymerization process may include feeding the antistatic agent into the polymerization process and, subsequently, reacting the antistatic agent with at least one alkylaluminum.Type: GrantFiled: December 27, 2019Date of Patent: November 21, 2023Assignee: Braskem S.A.Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli, Adriano Giraldi Fisch, Roberto Osório Jimenez
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Publication number: 20220411545Abstract: A process for propylene preliminary polymerization in liquid phase that occurs in a continuous preliminary polymerization reactor may include feeding a propylene monomer and a Ziegler-Natta catalyst system having (a) a pro-catalyst having an internal electron donor comprising a substituted phenylene aromatic diester, (b) a catalyst activator and optionally (c) an external donor, into the continuous preliminary polymerization reactor, wherein the feeding is carried out without pre-contact of the pro-catalyst with the catalyst activator, and also without pre-contact of the catalyst activator with the propylene monomer before entering the continuous preliminary polymerization reactor.Type: ApplicationFiled: June 27, 2022Publication date: December 29, 2022Applicant: Braskem S.A.Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli, Thiago Roberto Almeida, Bryan Dawson
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Patent number: 11352375Abstract: A method of forming polymerization auxiliaries for a polymerization process may include combining an antifouling agent with a killer agent to form an auxiliary composition; and contacting the auxiliary composition with an alkylaluminum. An antifouling complex may be produced by combining an antifouling agent with a killer agent to form an auxiliary composition; and contacting the auxiliary composition with an alkylaluminum.Type: GrantFiled: December 27, 2019Date of Patent: June 7, 2022Assignee: Braskem S.A.Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli
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Patent number: 11186721Abstract: A process for treatment of nanoparticles of mineral filler for obtaining processed nanoparticles for use in polymerization in the presence of nanoparticles which includes the steps of (a) drying a mineral filler with an inert gas to remove catalyst poisons; (b) mixing the mineral filler dried obtained in step (a) with a swelling agent in a liquid state or near a critical state or in the supercritical state; (c) subjecting the swelling agent of the mixture obtained in step (b) to an endoenthalpic or isoentalphic phase change by altering the conditions of the temperature and/or pressure; (d) subjecting the nanoparticles of the mixture obtained in step (c) to contact of scavenging agent to react with catalyst poisons; then the mixture obtained in step (d) can be dried in a step (e) with an inert gas to remove sub-products from scavenging agent and catalyst poisons to obtain the treated nanoparticles.Type: GrantFiled: December 29, 2014Date of Patent: November 30, 2021Assignee: Braskem S.A.Inventors: Dihogenes Adriano Pozzer, Olavo Martins Junior, Alessandra Coelho Silva Lucas, Fernando Silveira
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Patent number: 11059770Abstract: Process for purification of unreacted vinyl acetate monomers comprising the steps of preliminarily loading an adsorbent agent bed with a mixture comprising an inert gas and fresh vinyl acetate; and feeding said adsorbent agent bed with unreacted vinyl acetate monomers to remove acetic acid.Type: GrantFiled: December 19, 2017Date of Patent: July 13, 2021Assignee: Braskem, S.A.Inventors: Dihogenes Adriano Pozzer, Olavo Martins Junior, Alessandra Coelho Silva Lucas, Iuri Freytag
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Publication number: 20200207951Abstract: Methods may include reacting an antistatic agent with at least one alkylaluminum to form an antistatic complex, and may further include feeding the antistatic complex into a polymerization process. Methods of using an antistatic agent in a polymerization process may include feeding the antistatic agent into the polymerization process and, subsequently, reacting the antistatic agent with at least one alkylaluminum.Type: ApplicationFiled: December 27, 2019Publication date: July 2, 2020Applicant: Braskem S.A.Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli, Adriano Giraldi Fisch, Roberto Osório Jimenez
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Publication number: 20200207886Abstract: Methods of adding a catalyst to a bulk polymerization process may include mixing the catalyst with propylene to form a catalyst mixture that is substantially free of any C20 or greater hydrocarbons, feeding the catalyst mixture into a polymerization reactor, activating the catalyst mixture; and performing a polymerization on the catalyst mixture in the polymerization reactor. Polymers may be formed by polymerization processes that are substantially free of any C20 or greater hydrocarbons.Type: ApplicationFiled: December 27, 2019Publication date: July 2, 2020Applicant: Braskem S.A.Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli
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Publication number: 20200207791Abstract: A method of forming polymerization auxiliaries for a polymerization process may include combining an antifouling agent with a killer agent to form an auxiliary composition; and contacting the auxiliary composition with an alkylaluminum. An antifouling complex may be produced by combining an antifouling agent with a killer agent to form an auxiliary composition; and contacting the auxiliary composition with an alkylaluminum.Type: ApplicationFiled: December 27, 2019Publication date: July 2, 2020Applicant: Braskem S.A.Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli
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Publication number: 20200115315Abstract: Process for purification of unreacted vinyl acetate monomers comprising the steps of preliminarily loading an adsorbent agent bed with a mixture comprising an inert gas and fresh vinyl acetate; and feeding said adsorbent agent bed with unreacted vinyl acetate monomers to remove acetic acid.Type: ApplicationFiled: December 19, 2017Publication date: April 16, 2020Applicant: Braskem S.A.Inventors: Dihogenes Adriano Pozzer, Olavo Martins Junior, Alessandra Coelho Silva Lucas, Iuri Freytag
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Publication number: 20180002529Abstract: A process for treatment of nanoparticles of mineral filler for obtaining 5 processed nanoparticles for use in polymerization in the presence of nanopartciles which includes the steps of (a) drying a mineral filler with an inert gas for remove catalyst poisons; (b) mixing the mineral filler dried obtained in step (a) with a swelling agent in a liquid state or near a critical state or in the supercritical state; (c) subjecting the swelling agent of the 10 mixture obtained in step (b) to an endoenthalpic or isoentalphic phase change by altering the conditions of the temperature and/or pressure; (d) subjecting the nanoparticles of the mixture obtained in step (c) to contact of scavenging agent to react with catalyst poisons; then the mixture obtained in step (d) can be dried in a step (e) with an inert gas to remove sub-products 15 from scavenging agent and catalyst poisons to obtain the treated nanoparticles.Type: ApplicationFiled: December 29, 2014Publication date: January 4, 2018Inventors: Dihogenes Adriano Pozzer, Olavo Martins Junior, Alessandra Coelho Silva Lucas, Fernando Silveira
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Patent number: 8329811Abstract: A process for polymerization in the presence of nanoparticles of a mineral filler for obtaining polymer nanocomposites which includes the steps of (a) mixing a mineral filler with a swelling agent in a liquid state or near a critical state or supercritical state; (b) subjecting the swelling agent of the mixture obtained in step (a) to an endoenthalpic or isoenthalpic phase change, by altering the conditions of temperature and/or pressure; and (c) polymerizing a monomer, in a continuous or a batch process, in the presence of the mixture of step (b); wherein the swelling agent is a saturated or unsaturated hydrocarbon, a polar or vinylic organic compound, the same monomer used in the polymerization reaction or an inert compound present as a component of the reaction medium.Type: GrantFiled: April 15, 2008Date of Patent: December 11, 2012Assignee: Braskem S.A.Inventors: Susana Alcira Liberman, Dihogenes Adriano Pozzer, Fábio Fernandes Mota, Olavo Martins Junior, Manoel Lisboa Da Silva Neto
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Publication number: 20110251343Abstract: The present invention refers to a process for the preparation of high performance polymer nanocomposites by means of an in situ continuous or batch polymerization process. More specifically, in this process, the sheet-like (layered) or spherical-like mineral filler is previously swollen with a swelling agent consisting in a saturated or unsaturated hydrocarbon or a polar or vinylic organic compound, in liquid state or near the critical point or in supercritical state, in a stirred continuous flow or batch type reactor, prior to being introduced into a polymerization reactor. The swelling agent is subjected to an endoenthalpic or isoenthalpic phase change upon being mixed with the mineral filler, in order to exfoliate and disperse the same at the nanometric level prior to the polymerization.Type: ApplicationFiled: April 15, 2008Publication date: October 13, 2011Applicant: Braskem S.A.Inventors: Susana Alcira Liberman, Dihogenes Adriano Pozzer, Fábio Fernandes Mota, Olavo Martins Junior, Manoel Lisboa Da Silva Neto