ALEXANDRIA, Va., Jan. 28 -- United States Patent no. 12,534,568, issued on Jan. 27, was assigned to Covestro Deutschland AG (Leverkusen, Germany).
"Polyester carbonates consisting of different diols in a defined ratio" was invented by Alexander Meyer (Dusseldorf, Germany), Thomas Pfingst (Tonisvorst, Germany) and Lukas Fabian Schulz (Lemgo, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention relates to a process for preparing a polyester carbonate on the basis of cycloaliphatic diacids and at least one 1,4:3,6-dianhydrohexitol and at least one further aliphatic dihydroxy compound, to a polyester carbonate and to a molding compound and a molded product containing the polyester carbona...