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.

公开(公告)号：DE59405291D1

公开(公告)日：1998-04-02

申请号：DE59405291

申请日：1994-07-16

Applicant: BASF AG

Inventor： BECKER RAINER DR ,  HUELLMANN MICHAEL DR ,  PALM CHRISTOF DR ,  FRANZISCHKA WOLFGANG DR

IPC: C08G65/06 ,  C08G65/02 ,  C08G65/10 ,  C08G65/20 ,  C08G65/26

Abstract: A process for the preparation of polytetrahydrofuran or C2- to C10-alkylene oxide-tetrahydrofuran copolymers having a mean molecular weight of from 250 to 20000 daltons by cationic polymerisation of tetrahydrofuran or tetrahydrofuran and C2- to C10-alkylene oxides in the presence of a promoter, in which process the catalyst used is a mixture of one or more C2- to C6-di- or tricarboxylic acids with boric acid.

公开(公告)号：DE19507399A1

公开(公告)日：1996-09-05

申请号：DE19507399

申请日：1995-03-03

Applicant: BASF AG

Inventor： SIGWART CHRISTOPH DR ,  FISCHER ROLF DR ,  BECKER RAINER DR ,  PLITZKO KLAUS-DIETER DR ,  HEILEN GERD DR ,  PALM CHRISTOF DR ,  GROLL PETER DR

IPC: C08G18/67 ,  C08G65/10 ,  C08G65/20 ,  C08G65/28 ,  C08G65/32 ,  C08L71/02

Abstract: The invention concerns tetrahydrofuran/but-2-ine-1,4-diol copolymers containing C-C triple bonds, the copolymers having a mean molecular weight Mn of 500 to 3,500 Daltons and containing 0.5 to 3 moles of triple bonds per mole of copolymer, as well as blends of these copolymers with polytetrahydrofuran having a mean molecular weight Mn of 500 to 3,500 Daltons. The invention also concerns a method of producing such copolymers or blends and their use.

公开(公告)号：DE4303528A1

公开(公告)日：1994-08-11

申请号：DE4303528

申请日：1993-02-06

Applicant: BASF AG

Inventor： DAMS ALBRECHT DR ,  KRUG JOSEPH DR ,  PALM CHRISTOF DR

IPC: B01D3/36 ,  B01D61/36 ,  C07D307/08 ,  B01D1/00

公开(公告)号：DE4202564A1

公开(公告)日：1993-08-05

申请号：DE4202564

申请日：1992-01-30

Applicant: BASF AG

Inventor： KRUG JOSEPH DR ,  PALM CHRISTOF DR ,  BROELLOS KLAUS DR ,  WOLF DIETER DR

IPC: B01D61/36 ,  C07D307/08

Abstract: Process for separating a mixture of tetrahydrofuran and water into its components, the separation being carried out by means of pervaporation.

公开(公告)号：DE3432575A1

公开(公告)日：1986-03-13

申请号：DE3432575

申请日：1984-09-05

Applicant: BASF AG

Inventor： MUELLER HERBERT DR ,  PALM CHRISTOF DR

IPC: C07D307/08

Abstract: A process for the preparation of tetrahydrofuran from aqueous solutions of 1,4-butanediol by heating in the liquid phase to temperatures from 200 to 260 DEG C under pressure and in the presence of phosphoric acid, and cooling of the reaction mixture to temperatures below 100 DEG C during an average residence time of 10 to 45 minutes.

公开(公告)号：DE1768691A1

公开(公告)日：1972-03-09

申请号：DE1768691

申请日：1968-06-20

Applicant: BASF AG

Inventor： PLATZ ROLF DR ,  DOCKNER TONI DR ,  PALM CHRISTOF DR

IPC: C07C51/235 ,  C07C51/265 ,  C07C51/16