公开(公告)号：US3600430A

公开(公告)日：1971-08-17

申请号：US3600430D

申请日：1968-03-22

Applicant: CELANESE CORP

Inventor： MARTIN PRESTON K ,  BLAND BOBBY J

IPC: C07C69/80 ,  C07C69/82

CPC classification number: C07C67/58 ,  C07C69/82

Abstract: A PROCESS FOR THE PURIFICATION OF A DIESTER OF A BENZENE DICARBOXYLIC ACID, E.G. BIS(2-HYDROXYETHYL) TEREPHTHALATE, BY MIXING A MONONUCLEAR AROMATIC HYDROCARBON OR A HALOHYDROCARBON SOLVENT WITH AN INSOLUBLE AMOUNT OF MOLTEN DIESTER, FOLLOWED BY SEPARATING THE RESULTING TWO PHASES AND RECOVERING PURIFIED DIESTER FROM THE LIGHTER OF THE TWO PHASES.

公开(公告)号：US3597470A

公开(公告)日：1971-08-03

申请号：US3597470D

申请日：1968-01-24

Applicant: CELANESE CORP

Inventor： WITT ENRIQUE R ,  BLAND BOBBY J

IPC: C07C69/82

CPC classification number: C07C67/52 ,  C07C67/60 ,  C07C69/82

Abstract: A PROCESS FOR THE PURIFICATION OF BIS(2 - HYDROXYETHYL) TEREPHTHALATE COMPRISING CONTACTING A SOLUTION OF THE TEREPHTHALATE WITH SODIUM BOROHYDRIDE OR BIORANE FOLLOWED BY CRYSTALLIZATION OF THE TEREPHTHALATE FROM SOLUTION.