US Patent Issued to Covestro on Sept. 22 for "Polyol premixes, thermally insulating rigid polyurethane foams and methods for their production" (Pennsylvania Inventors)

ALEXANDRIA, Va., Sept. 24 -- United States Patent no. 12,742,034, issued on Sept. 22, was assigned to Covestro LLC (Pittsburgh).

"Polyol premixes, thermally insulating rigid polyurethane foams and methods for their production" was invented by Brandon W. Parks (McKees Rocks, Pa.), Rick L. Adkins (Canonsburg, Pa.) and Laine A. Mosco (Charleroi, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Polyol premixes and thermally insulating rigid polyurethane foams, such as those that can be used as a thermal insulation medium in the construction of refrigerated storage devices, are disclosed. A polymer polyol having a OH number of at least 200 mg KOH/g and a solids content of at least 40% by weight is utilized. The...