ALEXANDRIA, Va., March 26 -- United States Patent no. 12,258,437, issued on March 25, was assigned to BASF SE (Ludwigshafen am Rhein, Germany).
"Compact polyurethane" was invented by Andreas Emge (Lemfoerde, Germany), Andre Meyer (Lemfoerde, Germany) and Sirus Zarbakhsh (Ludwigshafen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "Described herein is a compact polyurethane having a density of less than=850 g/l, obtainable by reacting at least the components: i) a polyisocyanate composition; and ii) a polyol composition, including at least one polyether polyol (ii.1) which is obtainable by reacting ii.1.1) a polyol starter with a functionality of 3 to 6 with ii.1.2) propylene oxide and/or butylene oxi...