US Patent Issued to BASF on Aug. 26 for "Separation of n-methylethylenediamine from EDA-containing mixtures" (German Inventors)

ALEXANDRIA, Va., Aug. 26 -- United States Patent no. 12,398,090, issued on Aug. 26, was assigned to BASF SE (Ludwigshafen am Rhein, Germany).

"Separation of n-methylethylenediamine from EDA-containing mixtures" was invented by Michael Joedecke (Ludwigshafen am Rhein, Germany) and Joerg Pastre (Ludwigshafen am Rhein, Germany).

According to the abstract* released by the U.S. Patent & Trademark Office: "A process for producing EDA from a mixture comprising water (H2O), ethylenediamine (EDA) and N-methylethylenediamine (NMEDA) by feeding the mixture into a rectification column, wherein the rectification column is operated at the top pressure in the range of 5.0 to 7.5 bar."

The patent was filed on Dec. 3, 2020, under Application No. 17/783,2...