Patents by Inventor Gian F. Margelli

Gian F. Margelli 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).

  • Catalysts for the preparation of elastomeric olefinic copolymers
    Patent number: 5278118
    Abstract: Catalysts for the preparation of copolymers of ethylene and/or alpha-olefins and optionally dienes, are obtained by reacting an Al-alkyl with a solid catalytic component comprising:(A) a magnesium compound containing at least an Mg-halogen bond;(B) a halogenated compound of at least partly trivalent Ti or V, containing at least a Ti--OR or V--OR bond, wherein the Mg/Ti(V), halogen/Ti(V), halogen/Mg and OR/Ti(V) atomic ratios are within determined ranges; and(C) an electron-donor compound.Elastomeric copolymers endowed with improved tension set values are obtained with said catalysts.
    Type: Grant
    Filed: April 8, 1992
    Date of Patent: January 11, 1994
    Assignee: Ausimont, S.p.A.
    Inventors: Illaro Cuffiana, Roberto Fabbri, Gian F. Margelli, Umberto Zucchini
  • Catalysts for the preparation of elastomeric olefinic copolymers
    Patent number: 4886770
    Abstract: Catalysts for the preparation of copolymers of ethylene and/or alpha-olefins and optionally dienes, are obtained by reacting an Al-alkyl with a solid catalytic component comprising:(A) a magnesium compound containing at least an Mg-halogen bond;(B) a halogenated compound of at least partly trivalent Ti or V, containing at least a Ti-OR or V-OR bond, wherein the Mg/Ti(V), halogen/Ti(V), halogen/Mg and OR/Ti(V) atomic ratios are within determined ranges; and(C) an electron-donor compound.Elastomeric copolymers endowed with improved tension set values are obtained with said catalysts.
    Type: Grant
    Filed: September 30, 1987
    Date of Patent: December 12, 1989
    Assignee: Ausimont
    Inventors: Illaro Cuffiani, Roberto Fabbri, Gian F. Margelli, Umberto Zucchini