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).

  • Publication number: 20240084054
    Abstract: 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: Application
    Filed: November 21, 2023
    Publication date: March 14, 2024
    Applicant: Braskem S.A.
    Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli
  • Publication number: 20240034858
    Abstract: 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: Application
    Filed: October 10, 2023
    Publication date: February 1, 2024
    Applicant: Braskem S.A.
    Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli, Adriano Giraldi Fisch, Roberto Osório Jimenez
  • Patent number: 11866522
    Abstract: 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: Grant
    Filed: December 27, 2019
    Date of Patent: January 9, 2024
    Assignee: Braskem S.A.
    Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli
  • Patent number: 11820879
    Abstract: 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: Grant
    Filed: December 27, 2019
    Date of Patent: November 21, 2023
    Assignee: Braskem S.A.
    Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli, Adriano Giraldi Fisch, Roberto Osório Jimenez
  • Publication number: 20220411545
    Abstract: 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: Application
    Filed: June 27, 2022
    Publication date: December 29, 2022
    Applicant: Braskem S.A.
    Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli, Thiago Roberto Almeida, Bryan Dawson
  • Patent number: 11352375
    Abstract: 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: Grant
    Filed: December 27, 2019
    Date of Patent: June 7, 2022
    Assignee: Braskem S.A.
    Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli
  • Publication number: 20200207886
    Abstract: 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: Application
    Filed: December 27, 2019
    Publication date: July 2, 2020
    Applicant: Braskem S.A.
    Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli
  • Publication number: 20200207951
    Abstract: 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: Application
    Filed: December 27, 2019
    Publication date: July 2, 2020
    Applicant: Braskem S.A.
    Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli, Adriano Giraldi Fisch, Roberto Osório Jimenez
  • Publication number: 20200207791
    Abstract: 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: Application
    Filed: December 27, 2019
    Publication date: July 2, 2020
    Applicant: Braskem S.A.
    Inventors: Olavo Martins Junior, Dihogenes Adriano Pozzer, Élita Cavalli