US Patent Issued to ARKEMA FRANCE on July 28 for "Method for the continuous preparation of formulated polyamide prepolymers" (French Inventors)

ALEXANDRIA, Va., July 28 -- United States Patent no. 12,692,347, issued on July 28, was assigned to ARKEMA FRANCE (Puteaux, France).

"Method for the continuous preparation of formulated polyamide prepolymers" was invented by Sebastien Quinebeche (Serquigny, France), Gerald Romazini (Serquigny, France), Pierrick Roger-Dalbert (Pierre-Benite, France) and Thierry Briffaud (Serquigny, France).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for continuously preparing a formulated polyamide prepolymer, of which the solution viscosity is from 0.25 dL/g to 0.70 dL/g, as measured according to ISO 307:2007 in m-cresol at 20deg C., the method including a step of polycondensation on the basis of one or more polya...