US Patent Issued to Evonik Operations on Nov. 11 for "Defoamer composition based on organofunctionally modified polybutadienes" (German Inventors)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,466,906, issued on Nov. 11, was assigned to Evonik Operations GmbH (Essen, Germany).

"Defoamer composition based on organofunctionally modified polybutadienes" was invented by Philippe Favresse (Ratingen, Germany), Alexander Schulz (Troisdorf, Germany), Michael Fiedel (Essen, Germany), Sarah Otto (Essen, Germany), Frank Schubert (Neukirchen-Vluyn, Germany), Thorsten Schierle (Essen, Germany), Heike Semmler (Rheinberg, Germany) and Andreas Stuttgen (Hattingen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A defoamer composition contains a compound based on polybutadiene having at least one repeat unit selected from the divalent radicals:"

The p...