Patents by Inventor Elio Diani

Elio Diani 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).

  • Radial and branched block copolymers, compositions which contain them, their preparation and their use in bituminous compositions
    Patent number: 5272214
    Abstract: Radial and branched block copolymers show a structure: ##STR1## wherein: Z is a radical deriving from a tetrafunctional coupling agent;A is a polystyrene block;B is a polybutadiene blockm, n, p, q are either 1 or zero, with the condition that their sum is comprised within the range of from 1 to 4.Compositions of block copolymers comprise the hereinabove disclosed radial and branched block copolymers, blended with a two-block copolymer B-A, and an "A" homopolymer.The process for the preparation of said radial and branched block copolymers and of the related compositions is disclosed, and furthermore their use is disclosed in bituminous compositions, in order to improve the general characteristics of the bitumens.
    Type: Grant
    Filed: March 4, 1991
    Date of Patent: December 21, 1993
    Assignee: Enichem Elastomeri S.p.A.
    Inventors: Sergio Custro, Elio Diani, Alessandro Zazzetta