ALEXANDRIA, Va., May 12 -- United States Patent no. 12,624,187, issued on May 12, was assigned to Covestro Deutschland AG (Leverkusen, Germany).
"Method for recovering raw materials from polyurethane products" was invented by Friedhelm Steffens (Leverkusen, Germany), Sebastian Pohl (Grunstadt, Germany), Shabnam Majidi Salehi (Cologne, Germany) and Jonas Krause (Langenfeld, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a method for recovering raw materials from polyurethane products, having the steps of: (A) providing a polyurethane product based on an isocyanate component and a polyol component; (B) reacting the polyurethane product with an alcohol in the presence of a catal...