US Patent Issued to Dow Global Technologies on June 9 for "Rigid polyurethane foam and multilayer thermal insulation assemblies containing the foam" (Italian, Swiss, German Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,815, issued on June 9, was assigned to Dow Global Technologies LLC (Midland, Mich.).

"Rigid polyurethane foam and multilayer thermal insulation assemblies containing the foam" was invented by Thomas Mosciatti (Modena, Italy), Cecelia Girotti (Correggio, Italy), Carsten Berghaus (Herten, Germany) and Hans Kramer (Rapperswil-Jona, Switzerland).

According to the abstract* released by the U.S. Patent & Trademark Office: "Rigid polyurethane foams are made using a mixture of polyols that includes 4 to 33% by weight of triisopropanolamine. The mixture of polyols is reacted with an aromatic polyisocyanate in the presence of a blowing agent, a foam-stabilizing surfactant and a urethane cat...