ALEXANDRIA, Va., July 16 -- United States Patent no. 12,359,017, issued on July 15, was assigned to BASF SE (Ludwigshafen am Rhein, Germany).
"Method for producing a rigid polyurethane foam" was invented by Christiane Giesker (Osnabrueck, Germany), Mark Elbing (Bremen, Germany), Joerg Krogmann (Lohne, Germany) and Patrick Lax (Lemfoerde, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a process for the production of a rigid polyurethane foam or rigid polyisocyanurate foam, comprising the reaction of at least one polyisocyanate and of a polyol composition (PZ), where the polyol composition (PZ) comprises at least one compound having at least two hydrogen atoms reactive ...