ALEXANDRIA, Va., June 17 -- United States Patent no. 12,312,506, issued on May 27, was assigned to SPECIALTY OPERATIONS FRANCE (Lyon, Finland).
"Polymers for metal surface treatment" was invented by Guillaume Gody (Rueil-Malmaison, France), Isabelle Storet (Serezin de la Tour, France), Laurent Garel (Lyons, France) and Marie-Pierre Labeau (Se'vres, France).
According to the abstract* released by the U.S. Patent & Trademark Office: "The instant invention concerns the use of polymers obtained by radical copolymerization of a mixture of (1) acrylic acid; (2) methacrylic acid; and (3) at least one allylcatechol selected from 4-allylbenzene-1,2-diol, 3-allylbenzene-1,2-diol; methylated forms thereof (eugenols); and mixtures thereof, for treati...