Patents by Inventor Roberto Todesco

Roberto Todesco 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).

  • Stabilized filled polyolefins
    Patent number: 5880186
    Abstract: The invention relates to stabilized filled polyolefins comprising a filler and a macrocyclic compound which contains a radical of formula ##STR1## in the macrocyclic structure or in a side-group, said macrocyclic structure consisting of at least 8 atoms and wherein the substituents R are each independently of one another methyl, ethyl or propyl, or two substituents R at the same carbon atom are together also a pentamethylene radical, and a is 0, 1 or 2. The invention also relates to a method of stabilizing filled polyolefins and to the use of the macrocyclic compounds as stabilizers.
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: March 9, 1999
    Assignee: Ciba Specialty Chemicals Corporation
    Inventors: Roberto Todesco, Jean-Roch Pauquet, Bernd Klingert
  • Process for stabilizing recycled mixed plastics
    Patent number: 5298540
    Abstract: Recycled mixed plastics from domestic and commercial waste can be stabilized against thermal oxidative degradation by adding a combination of a sterically hindered phenol with a phosphite or phosphonite.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: March 29, 1994
    Assignee: Ciba-Geigy Corporation
    Inventors: Jean-Roch Pauquet, Franciszek Sitek, Roberto Todesco