公开(公告)号：DE502008002275D1

公开(公告)日：2011-02-24

申请号：DE502008002275

申请日：2008-08-27

Applicant: BASF SE

Inventor： WABNITZ TOBIAS ,  FERRE GIMENEZ RICARDO ,  LAUBNER ROBERT ,  STOLLE RALF

IPC: C08G65/20

公开(公告)号：AT495212T

公开(公告)日：2011-01-15

申请号：AT08803272

申请日：2008-08-27

Applicant: BASF SE

Inventor： WABNITZ TOBIAS ,  FERRE GIMENEZ RICARDO ,  LAUBNER ROBERT ,  STOLLE RALF

IPC: C08G65/20

Abstract: The present invention provides a process for depolymerizing mixtures comprising mono- and/or diesters of polytetrahydrofuran in the presence of an acidic catalyst and of a C1- to C3-alcohol at temperatures of from 80 to 200° C. and a pressure of from 0.05 to 0.5 MPa, where the molar ratio of the C1- to C3-alcohol relative to the carboxyl groups present in the mixture is greater than 1.