Inventor
MING ZHANGYONG
CN3 patents
Patents
3 patentsUS11702381B1Jul 18, 2023
Method for operating a rectification column
COVESTRO DEUTSCHLAND AG5 citations68
US10975020B2Apr 13, 2021
Process for quenching a gaseous reaction mixture obtained in the gas phase phosgenation of diamines
COVESTRO DEUTSCHLAND AG0 citations44
US11020720B2Jun 1, 2021
Method for cleaning phosgene-conducting apparatuses
COVESTRO DEUTSCHLAND AG0 citations39