ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,759, issued on June 23, was assigned to Wacker Chemie AG (Munich).
"Formaldehyde-free binder composition" was invented by Heimo Wolfle (Traunstein, Germany), Florian Bauers (Burghausen, Germany) and Holger Poths (Burghausen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "An aqueous binder composition. The aqueous binder composition is obtainable by radically initiated polymerization of vinyl acetate and ethylene, in the presence of polyvinyl alcohol in an aqueous medium, wherein (a) 50 to 94 wt % of vinyl acetate, (b) 5 to 40 wt % of ethylene, (c) 0.2 to 5 wt % of acrylamide and/or methacrylamide, and (d) 0.2 to 5 wt % of maleic anhydride an...