ALEXANDRIA, Va., June 4 -- United States Patent no. 12,319,777, issued on June 3, was assigned to BASF SE (Ludwigshafen am Rhein, Germany).
"Polyurethane-polyisocyanurate compound with outstanding mechanical properties" was invented by Julia Liese (Lemfoerde, Germany) and Stefan Bokern (Lemfoerde, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "Described herein is a process for preparing a polyurethane-polyisocyanurate compound by mixing a) at least one polyisocyanate; b) a mixture (M); c) at least one compound including one or more epoxide groups; d) at least one aliphatic polyol (P1) having a high weight average molecular weight; e) at least one polyol (P2) having a low weight average molecular weig...