公开(公告)号：CA2962105A1

公开(公告)日：2016-03-31

申请号：CA2962105

申请日：2015-09-21

Applicant: BASF SE

Inventor： SCHRAUT ARMIN ,  KALLER MARTIN ,  BRONNEBERG ROB ,  STAMMER JASMIN ,  DAS MARTIN ,  HARNISCHMACHER GERRIT

IPC: C07C67/08 ,  C07C69/82

Abstract: The present invention relates to a method for producing a diester of terephthalic acid by reacting terephthalic acid with at least one alcohol. In said method, terephthalic acid is suspended in the alcohol in a dispersion tank, the pre-suspension is conducted from the dispersion tank into a reactor and is reacted in the presence of an esterification catalyst, a reaction suspension is obtained, a stream of the reaction suspension is drawn off, is conducted through a heat exchanger lying outside the reactor and is heated and the heated reaction suspension is returned to the reactor. Reaction water is distilled off with the vapours in the form of an alcohol-water azeotrope, the vapours are at least partially condensed, the condensate is separated into an aqueous phase and an organic phase and the organic phase is at least partially returned to the reactor.