Patents by Inventor Ermanno Benetti

Ermanno Benetti 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).

  • Thermoplastic polyurethane endowed with improved characteristics of resistance to heat distortion
    Patent number: 4880847
    Abstract: A thermoplastic polyurethane endowed with improved heat distortion resistance, which comprises the product of reaction ofat least one polyisocyanate, preferably an organic diisocyanate;at least one polyol material reactive with the isocyanate and having a molecular weight higher than 400;a chain extender having a molecular weight lower than 400; andan aromatic anhydride having the formula (I): ##STR1## wherein A is a possibly substituted (C.sub.6 -C.sub.30) aromatic radical, m may be 0 or an integer from 1 to 3, and n is an integer equal to 1 or 2.
    Type: Grant
    Filed: July 21, 1987
    Date of Patent: November 14, 1989
    Assignee: Ausimont S.p.A.
    Inventors: Lino Credali, Carlo Mulas, Ermanno Benetti, Gianflavio Lunardon
  • Process for the manufacture of thermoplastic polyurethanes
    Patent number: 4769435
    Abstract: The invention concerns a process for the manufacture of thermoplastic polyurethanes wherein an organic polyisocyanate is made to polymerize with a polyol (reactive with same isocyanate) in the presence of a chain extending agent having a molecular weight lower than 400, under continuous stirring, at a temperature higher than 150.degree. C. and for a time sufficient to obtain a product having a melt flow index lower than 25 g/10'.
    Type: Grant
    Filed: July 16, 1987
    Date of Patent: September 6, 1988
    Assignee: Ausimont S.p.A.
    Inventors: Gianflavio Lunardon, Lino Credali, Ermanno Benetti, Carlo Mulas