Patents by Inventor Maria Angelica Cardoso Gollmann

Maria Angelica Cardoso Gollmann 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).

  • Metallocene catalyst based on a transition metal of groups 4 or 5 of the periodic table immobilized on a support modified with soluble hybrid silica, method for producing and using same
    Patent number: 9822199
    Abstract: The present invention pertains to a metallocene catalyst based on a transition metal of groups 4 or 5 of the periodic table prepared by the immobilization of a metallocene complex on a support modified with hybrid soluble silica, prepared by a non-hydrolytic sol-gel process. There is also described a process for preparing said catalyst. The supported metallocene catalyst of the present invention has the advantages of high catalytic activity, morphology, besides the fact of producing copolymers of ethylene with alpha-olefins having molecular behavior that will bring benefits in mechanical properties, such as resistance to tearing, piercing and impact, as well as improved optical and weldability properties.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: November 21, 2017
    Assignee: Braskem S.A.
    Inventors: Rodrigo Brambilla, Marcia Silva Lacerda Miranda, Ana Cristina Fontes Moreira, Etienne Marcos de Almeida Rocha, Maria Angelica Cardoso Gollmann
  • METALLOCENE CATALYST BASED ON A TRANSITION METAL OF GROUPS 4 OR 5 OF THE PERIODIC TABLE IMMOBILIZED ON A SUPPORT MODIFIED WITH SOLUBLE HYBRID SILICA, METHOD FOR PRODUCING AND USING SAME
    Publication number: 20170107316
    Abstract: The present invention pertains to a metallocene catalyst based on a transition metal of groups 4 or 5 of the periodic table prepared by the immobilization of a metallocene complex on a support modified with hybrid soluble silica, prepared by a non-hydrolytic sol-gel process. There is also described a process for preparing said catalyst. The supported metallocene catalyst of the present invention has the advantages of high catalytic activity, morphology, besides the fact of producing copolymers of ethylene with alpha-olefins having molecular behavior that will bring benefits in mechanical properties, such as resistance to tearing, piercing and impact, as well as improved optical and weldability properties.
    Type: Application
    Filed: December 4, 2014
    Publication date: April 20, 2017
    Inventors: Rodrigo Brambilla, Marcia Silva Lacerda Miranda, Ana Cristina Fontes Moreira, Etienne Marcos de Almeida Rocha, Maria Angelica Cardoso Gollmann