公开(公告)号：PL371863A1

公开(公告)日：2005-06-27

申请号：PL37186303

申请日：2003-04-10

Applicant: BASF AG

Inventor： GOERTZ HANZ-HELMUT ,  LUINSTRA GERRIT ,  FOERSTER MONIKA ,  BAUMANN ANDREAS ,  LINDNER EKKEHARD

IPC: C08G2/06 ,  C08G2/08

Abstract: A process is described for preparing polyoxymethylene by contacting a formaldehyde source with a catalyst of the formula I [ML 1 a L 2 b ] c m+ Z c.m/n n- (I) where M is a metal of group VIII; L 1 is a ligand having at least one pi-electron pair; each L 2 is independently tetrahydrofuran or a ligand which is displaceable by tetrahydrofuran; Z is an anion; a is 1 or 2; b is an integer from 0 to 4; c is 1 or 2; and m and n are integers from 1 to 4.