US Patent Issued to Henkel on June 9 for "Process for the preparation of hydroxyl-functionalized polyether-polysiloxane block copolymers" (German, American Inventors)

ALEXANDRIA, Va., June 9 -- United States Patent no. 12,649,828, issued on June 9, was assigned to Henkel AG & Co. KGaA (Duesseldorf, Germany).

"Process for the preparation of hydroxyl-functionalized polyether-polysiloxane block copolymers" was invented by Marta Woznicka (Rostock, Germany), Swarup Ghosh (Rostock, Germany), Marion Marquardt (Rostock, Germany), Esteban Mejia (Rostock, Germany), Udo Kragl (Kritzmow, Germany), Christina Despotopoulou (Minneapolis), Jan-Erik Damke (Dormagen, Germany) and Johann Klein (Duesseldorf, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention is directed to a hydroxyl-functionalized polyether-polysiloxane block copolymer of the structure A(-X-B)n whe...