公开(公告)号：CA2703828A1

公开(公告)日：2009-05-14

申请号：CA2703828

申请日：2008-10-28

Applicant: BASF SE

Inventor： PINKOS ROLF ,  TEBBEN GERD-DIETER ,  KRUG THOMAS ,  SIRCH TILMAN ,  SPENGEMAN TODD C ,  BEJUNE STEPHANIE ,  ANDRESS JEFFREY T ,  GASIOROWSKI TODD

IPC: C07D313/04

Abstract: The object of the present invention is a method for producing e-caprolactone in a purity greater than 99% by cyclization of 6-hydroxycaproic acid ester in the liquid phase at 150 to 400°C and 1 to 1020 hPa abs., separation and condensation of the compounds which are volatile under cyclization conditions, characterized in that the remaining sump product of the cyclization is thermally treated in at least one further reactor, volatile compounds are separated and condensed, and e-caprolactone is obtained from the condensate by distillation.