Patents by Inventor Élita Cavalli
Élita Cavalli 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: 12187876Abstract: 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: GrantFiled: October 10, 2023Date of Patent: January 7, 2025Assignee: Braskem S.A.Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli, Adriano Giraldi Fisch, Roberto Osório Jimenez
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Publication number: 20240209123Abstract: Described is a fluidic seal apparatus for continuously injecting a sealing gas into a bottom section of a gas-solids separation chamber. The fluidic seal apparatus includes an external section, a feed tube in fluid communication with a sealing gas supply, and an internal section. The external section connects the sealing gas supply to the internal section. The internal section includes gas distribution nozzles for distributing the sealing gas inside the bottom section of the gas-solids separation chamber. An internal chamber between the internal section and the external section is pressurized by the sealing gas.Type: ApplicationFiled: April 6, 2023Publication date: June 27, 2024Applicant: Braskem S.A.Inventors: Dihogenes Adriano Pozzer, Élita Cavalli, Olavo Martins Junior, Thiago Roberto Almeida
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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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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: 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: 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