US Patent Issued to Evonik Operations on June 23 for "Use of polyamine- and/or polyalkanolamine-based carboxylic acid derivatives in aqueous polyurethane dispersions" (German Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,662,596, issued on June 23, was assigned to Evonik Operations GmbH (Essen, Germany).

"Use of polyamine- and/or polyalkanolamine-based carboxylic acid derivatives in aqueous polyurethane dispersions" was invented by Michael Klostermann (Essen, Germany), Jan Marian Von Hof (Bochum, Germany), Kai-Oliver Feldmann (Essen, Germany) and Marvin Jansen (Essen, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The use of polyamine- and/or polyalkanolamine-based carboxylic acid derivatives as additives in aqueous polymer dispersions for production of porous polymer coatings, preferably for production of porous polyurethane coatings, is described."

The patent...