ALEXANDRIA, Va., April 7 -- United States Patent no. 12,594,708, issued on April 7, was assigned to Dakip B.V. (Wapenveld, Netherlands).
"Upgrading recycled polyvinyl butyral" was invented by Roeland Hans Ferdinand Van Delden (Apeldoorn, Netherlands) and Lawrence Fabian Batenburg (Eindhoven, Netherlands).
According to the abstract* released by the U.S. Patent & Trademark Office: "The invention is directed to a method for producing an upgraded polymer product from recycled polyvinyl butyral, to a polymer product obtainable by said method, to a construction material comprising such polymer product, and to a use of an extruder vacuum pump.The method of the invention comprises feeding a polymer feed stream to an extruder, wherein said polymer...