US Patent Issued to BASF on March 3 for "Flexible polyurethane foams having improved air permeability" (German Inventors)

ALEXANDRIA, Va., March 3 -- United States Patent no. 12,565,558, issued on March 3, was assigned to BASF SE (Ludwigshafen am Rhein, Germany).

"Flexible polyurethane foams having improved air permeability" was invented by Iran Otero Martinez (Lemfoerde, Germany), Alexander Raeth (Lemfoerde, Germany), Patrick Weiss (Lemfoerde, Germany), Ansgar Frericks (Lemfoerde, Germany) and Sonja Altmeppen (Lemfoerde, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to polyol mixtures comprising (b1) at least one polyether polyol having a hydroxyl value of 10 to 60 mg KOH/g and having a high proportion of ethylene oxide, (b2) at least one polyether polyol having a hydroxyl value of 10 to ...