Patents by Inventor Renata da Silva Cardoso

Renata da Silva Cardoso 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).

  • Patent number: 10407518
    Abstract: The present invention describes a catalyst support, which is used as an inorganic carrier for a Ziegler-Nata catalyst (ZN), using a modified spray cooling method. Such a catalyst support is prepared from alcoholic solutions of (a) an inorganic compound, in which the inorganic compound is a magnesium compound and (b) an inorganic compound and one or more additives. The solutions are prepared at a temperature below 100° C., carried through a nozzle placed inside a reactor, and sprayed into droplets forming a solid precipitate, which is generally spherical, when in contact with an inert hydrocarbon solvent at low temperature. The obtained catalyst support is reacted with a titanium compound, preferably titanium tetrachloride, in order to produce an active catalyst for olefin polymerization.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: September 10, 2019
    Assignee: Braskem S.A.
    Inventors: Renata da Silva Cardoso, Jonas Alves Fernandes, Marcia Regina Washburger, Cesar Augusto Sales Barbosa
  • Publication number: 20180155458
    Abstract: The present invention describes a catalyst support, which is used as an inorganic carrier for a Ziegler-Nata catalyst (ZN), using a modified spray cooling method. Such a catalyst support is prepared from alcoholic solutions of (a) an inorganic compound, in which the inorganic compound is a magnesium compound and (b) an inorganic compound and one or more additives. The solutions are prepared at a temperature below 100° C., carried through a nozzle placed inside a reactor, and sprayed into droplets forming a solid precipitate, which is generally spherical, when in contact with an inert hydrocarbon solvent at low temperature. The obtained catalyst support is reacted with a titanium compound, preferably titanium tetrachloride, in order to produce an active catalyst for olefin polymerization.
    Type: Application
    Filed: December 8, 2017
    Publication date: June 7, 2018
    Applicant: Braskem S.A.
    Inventors: Renata da Silva Cardoso, Jonas Alves Fernandes, Marcia Regina Washburger, Cesar Augusto Sales Barbosa
  • Patent number: 9873750
    Abstract: The present invention describes a catalyst support, which is used as an inorganic carrier for a Ziegler-Nata catalyst (ZN), using a modified spray cooling method. Such a catalyst support is prepared from alcoholic solutions of (a) an inorganic compound, in which the inorganic compound is a magnesium compound and (b) an inorganic compound and one or more additives. The solutions are prepared at a temperature below 100° C., carried through a nozzle placed inside a reactor, and sprayed into droplets forming a solid precipitate, which is generally spherical, when in contact with an inert hydrocarbon solvent at low temperature. The obtained catalyst support is reacted with a titanium compound, preferably titanium tetrachloride, in order to produce an active catalyst for olefin polymerization.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: January 23, 2018
    Assignee: Braskem S.A.
    Inventors: Renata da Silva Cardoso, Jonas Alves Fernandes, Marcia Regina Washburger, Cesar Augusto Sales Barbosa
  • Publication number: 20160311938
    Abstract: The present invention describes a catalyst support, which is used as an inorganic carrier for a Ziegler-Nata catalyst (ZN), using a modified spray cooling method. Such a catalyst support is prepared from alcoholic solutions of (a) an inorganic compound, in which the inorganic compound is a magnesium compound and (b) an inorganic compound and one or more additives. The solutions are prepared at a temperature below 100° C., carried through a nozzle placed inside a reactor, and sprayed into droplets forming a solid precipitate, which is generally spherical, when in contact with an inert hydrocarbon solvent at low temperature. The obtained catalyst support is reacted with a titanium compound, preferably titanium tetrachloride, in order to produce an active catalyst for olefin polymerization.
    Type: Application
    Filed: December 17, 2014
    Publication date: October 27, 2016
    Inventors: Renata da Silva Cardoso, Jonas Alves Fernandes, Marcia Regina Washburger, Cesar Augusto Sales Barbosa