公开(公告)号：AT251651T

公开(公告)日：2003-10-15

申请号：AT98124438

申请日：1998-12-22

Applicant: BASF AG

Inventor： BEER WULF FRIEDEMANN DR ,  BEISER KLAUS ,  CIPRIAN JUERGEN DR ,  FRANZ LOTHAR DR ,  FRANZISCHKA WOLFGANG DR ,  PALM CHRISTOF DR ,  PAPE FRANK-FRIEDRICH DR ,  PAUL AXEL DR ,  PESSEL ULRICH-DIETER ,  WECK ALEXANDER

IPC: B01J39/04 ,  B01J39/05 ,  B01J47/02 ,  B01J47/026 ,  B01J49/00 ,  B01J49/06 ,  C08F6/08 ,  C08G65/20 ,  C08G65/30 ,  C08G65/331 ,  C08J5/20

Abstract: The production of a hydroxyl group containing polymer, preferably polytetrahydrofuran, by ester exchange of the corresponding acyloxy group containing polymer with alcohol in the presence of a sodium containing catalyst involves separation of the sodium cation using a catalytic amount of water by passage through an ion exchange material.

公开(公告)号：ES2209047T3

公开(公告)日：2004-06-16

申请号：ES98124438

申请日：1998-12-22

Applicant: BASF AG

Inventor： BEER WULF FRIEDEMANN DR ,  BEISER KLAUS ,  CIPRIAN JURGEN DR ,  FRANZ LOTHAR DR ,  FRANZISCHKA WOLFGANG DR ,  PALM CHRISTOF DR

IPC: B01J39/04 ,  B01J39/05 ,  B01J47/02 ,  B01J47/026 ,  B01J49/00 ,  B01J49/06 ,  C08F6/08 ,  C08G65/20 ,  C08G65/30 ,  C08G65/331 ,  C08J5/20

Abstract: The production of a hydroxyl group containing polymer, preferably polytetrahydrofuran, by ester exchange of the corresponding acyloxy group containing polymer with alcohol in the presence of a sodium containing catalyst involves separation of the sodium cation using a catalytic amount of water by passage through an ion exchange material.