US Patent Issued to COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN on March 24 for "Catalytic system for the stereospecific polymerization of dienes and use thereof in a process for synthesizing diene polymers" (French Inventors)

ALEXANDRIA, Va., March 24 -- United States Patent no. 12,583,949, issued on March 24, was assigned to COMPAGNIE GENERALE DES ETABLISSEMENTS MICHELIN (Clermont-Ferrand, France).

"Catalytic system for the stereospecific polymerization of dienes and use thereof in a process for synthesizing diene polymers" was invented by Kevin Roos (Clermont-Ferrand, France), Stephane Carloti (Pessac, France), Pierre-Antoine Forens (Bruges, France) and Benoit Gadenne (Clermont-Ferrand, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A bimetallic catalytic system consists of the metallic components of formulae RLi and Ca(AR'y)2(L)x in which: R represents a substituted or unsubstituted C1-C10 aliphatic radical, a substitut...