公开(公告)号：DE502004000662D1

公开(公告)日：2006-07-06

申请号：DE502004000662

申请日：2004-01-10

Applicant: BASF AG

Inventor： MENGER VOLKMAR ,  SCHWARZTRAUBER MICHAEL

IPC: C08G65/20 ,  C08G65/322

Abstract: The processing of an at least partially deactivated hydrogenation catalyst for the hydrogenation of polytetrahydrofuran and/or the corresponding esters for the reduction in color number comprises treatment with water vapor at 100-250 degreesC and 0-40 bar.

公开(公告)号：MY135630A

公开(公告)日：2008-05-30

申请号：MYPI20035005

申请日：2003-12-26

Applicant: BASF AG

Inventor： MENGER VOLKMAR DR ,  SCHWARZTRAUBER MICHAEL

IPC: C08G65/20 ,  C08G65/322

Abstract: PROCESS FOR WORKING UP AN AT LEAST PARTIALLY DEACTIVATED HYDROGENATION CATALYST FOR THE COLOR NUMBER HYDROGENATION OF PTHF AND/OR PTHF ESTERS, IN WHICH THE HYDROGENATION CATALYST IS PURIFIED BY TREATMENT WITH STEAM AT FROM 100 TO 250ºC AND A GAUGE PRESSURE OF FROM 0 TO 4000 KPA (0 TO 40 BAR)

公开(公告)号：DE10330721A1

公开(公告)日：2005-01-27

申请号：DE10330721

申请日：2003-07-08

Applicant: BASF AG

Inventor： MENGER VOLKMAR ,  SCHWARZTRAUBER MICHAEL ,  HAUBNER MARTIN ,  PFAFF KLAUS-PETER

IPC: C08G65/20 ,  C08G65/30 ,  C08G65/331

Abstract: A process for obtaining oligomers of polytetrahydrofuran or of tetrahydrofuran copolymers from a methanolic crude product which contains polytetrahydrofuran or tetrahydrofuran copolymers and is obtained in the transesterification of the mono- and/or diesters of polytetrahydrofuran or tetrahydrofuran copolymers with methanol, which includes a) removing the majority of the methanol from the crude product in a first distillation stage, b) separating the resulting bottom product by distillation into a top fraction containing the oligomers of polytetrahydrofuran or of tetrahydrofuran copolymers, and polytetrahydrofuran or tetrahydrofuran copolymer, and c) condensing the oligomers of polytetrahydrofuran or of tetrahydrofuran copolymers out of the top fraction from stage b).

公开(公告)号：MY139814A

公开(公告)日：2009-10-30

申请号：MYPI20042578

申请日：2004-06-29

Applicant: BASF AG

Inventor： MENGER VOLKMAR DR ,  SCHWARZTRAUBER MICHAEL ,  HAUBNER MARTIN DR ,  PFAFF KLAUS-PETER DR

IPC: C07D307/08 ,  C08G65/20 ,  C08G65/30 ,  C08G65/331

Abstract: A PROCESS FOR OBTAINING OLIGOMERS OF POLYTETRAHYDROFURAN OR OF TETRAHYDROFURAN COPOLYMERS FROM A MEHTANOLIC CRUDE PRODUCT WHICH CONTAINS POLYTETRAHYDROFURAN OR TETRAHYDROFURAN OR TETRAHYDROFURAN COPOLYMERS AND IS ONTAINED IN THE TRANSESTERIFICATION OF THE MONO- AND/OR DIESTERS OF POLYTETRAHYDROFURAN OR TETRAHYDROFURAN COPOLYMERS WITH METHANOL, WHICH COMPRISES A)REMOVING THE MAJORITY OF THE METHANOL FROM THE CRUDE PRODUCT IN A FIRST DISTILLATION STAGE,B)SEPARATING THE RESULTING BOTTOM PRODUCT BY DISTILLATION INTO A TOP FRACTION COMPRISING THE OLIGOMERS OF POLYTETRAHYDROFURAN OR OF TETRAHYDROFURAN COPOLYMERS, AND POLYTETRAHYDROFURAN COPOLYMER,C)CONDENSING THE OLIGOMERS OF POLYTETRAHYDROFURAN OR OF TETRAHYDROFURAN COPOLYMERS OUT OF THE TOP FRACTION FROM STAGE B).

公开(公告)号：AT328027T

公开(公告)日：2006-06-15

申请号：AT04701294

申请日：2004-01-10

Applicant: BASF AG

Inventor： MENGER VOLKMAR ,  SCHWARZTRAUBER MICHAEL

IPC: C08G65/20 ,  C08G65/322

Abstract: The processing of an at least partially deactivated hydrogenation catalyst for the hydrogenation of polytetrahydrofuran and/or the corresponding esters for the reduction in color number comprises treatment with water vapor at 100-250 degreesC and 0-40 bar.

公开(公告)号：DE10301833A1

公开(公告)日：2004-07-29

申请号：DE10301833

申请日：2003-01-20

Applicant: BASF AG

Inventor： MENGER VOLKMAR ,  SCHWARZTRAUBER MICHAEL

IPC: C08G65/20 ,  C08G65/322 ,  B01J38/06 ,  B01J23/94 ,  B01J23/96

Abstract: The processing of an at least partially deactivated hydrogenation catalyst for the hydrogenation of polytetrahydrofuran and/or the corresponding esters for the reduction in color number comprises treatment with water vapor at 100-250 degreesC and 0-40 bar.