US Patent Issued to Covestro Deutschland on May 19 for "Modified polyisocyanate" (Chinese, German Inventors)

ALEXANDRIA, Va., May 19 -- United States Patent no. 12,630,667, issued on May 19, was assigned to Covestro Deutschland AG (Leverkusen, Germany).

"Modified polyisocyanate" was invented by Hao Liu (Shanghai), Yaguang Ma (Shanghai), Na Xu (Shanghai), Tian Xia (Shanghai), Hans-Josef Laas (Odenthal, Germany) and Raul Pires (Cologne, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "The invention relates to a modified polyisocyanate and use thereof, especially as a crosslinking component in a water-soluble or water-dispersible coating composition. The modified polyisocyanate comprises iminooxadiazinedione structure and isocyanurate structure, wherein the weight ratio of the iminooxadiazinedione structure to t...