US Patent Issued to MOJIA BIOTECH on Aug. 11 for "Process for producing 1, 5-pentamethylene diisocyanate from cadaverine salt" (Chinese Inventors)

ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,703,678, issued on Aug. 11, was assigned to MOJIA BIOTECH LTD. (Guang'an City, China).

"Process for producing 1, 5-pentamethylene diisocyanate from cadaverine salt" was invented by Man Kit Lau (Shanghai), Chengliang Lu (Shanghai) and Ansen Chiew (Shanghai).

According to the abstract* released by the U.S. Patent & Trademark Office: "An improved process for producing 1,5-pentamethylene diisocyanate (PDI) from a cadaverine salt is described herein. The process generally comprises providing a solution comprising a cadaverine salt dissolved in an inert solvent in the presence of a tertiary amine base; and subjecting the solution to a liquid-phase phosgenation reaction to convert the cadav...