Patents by Inventor Almerinda Di Benedetto

Almerinda Di Benedetto 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).

  • Continuous process for the preparation of solid catalyst components for the polymerization of &agr;-olefins
    Patent number: 6770718
    Abstract: A process is provided for the preparation of a solid catalyst component for the polymerization of olefins, comprising continuously feeding a liquid containing a titanium compound having at least one titanium-halogen bond into a vessel containing a solid comprising a magnesium halide and continuously discharging liquid from the vessel, whereby the concentration of the solid is maintained within the range of between 80 and 300 g/l, and the product between the average residence time of the liquid in the vessel and the concentration of the solid is maintained below 10,000 min*g/l. An advantage of the process is the reduced time and reactor volume necessary to prepare the catalysts, which show good activity and stereospecificity.
    Type: Grant
    Filed: July 17, 2002
    Date of Patent: August 3, 2004
    Assignee: Basell Poliolefine Italia S.p.A.
    Inventors: Massimo Covezzi, Anna Fait, Almerinda Di Benedetto
  • Continuous process for the preparation of solid catalyst components for the polymerization of alpha-olefins
    Publication number: 20030036611
    Abstract: A process is provided for the preparation of a solid catalyst component for the polymerization of olefins, comprising continuously feeding a liquid containing a titanium compound having at least one titanium-halogen bond into a vessel containing a solid comprising a magnesium halide and continuously discharging liquid from the vessel, whereby the concentration of the solid is maintained within the range of between 80 and 300 g/l, and the product between the average residence time of the liquid in the vessel and the concentration of the solid is maintained below 10,000 min*g/l. An advantage of the process is the reduced time and reactor volume necessary to prepare the catalysts, which show good activity and stereospecificity.
    Type: Application
    Filed: July 17, 2002
    Publication date: February 20, 2003
    Inventors: Massimo Covezzi, Anna Fait, Almerinda Di Benedetto