公开(公告)号：MY127550A

公开(公告)日：2006-12-29

申请号：MYPI20022822

申请日：2002-07-26

Applicant: BASF AG

Inventor： STEINBRENNER ULRICH DR ,  HAUBNER MARTIN DR ,  GERSTLAUER ACHIM DR ,  DOMSCHKE THOMAS DR ,  SIGWART CHRISTOPH DR ,  KAESHAMMER STEFAN C

IPC: C08G65/20 ,  C08G65/26

Abstract: IN A PROCESS FOR THE SINGLE-STAGE PREPARATION OF POLYTETRAHYDROFURAN AND/OR TETRAHYDROFURAN COPOLYMERS HAVING A MEAN MOLECULAR WEIGHT OF FROM 650 TO 5000 DALTON BY POLYMERIZATION OF TETRAHYDROFURAN OVER AN ACID CATALYST IN THE PRESENCE OF AT LEAST ONE TELOGEN AND/OR COMONOMER, THE TELOGEN AND/OR COMONOMER IS ADDED AT LEAST TWO ADDITION POINTS IN DIFFERENT SEGMENTS OF THE POLYMERIZATION APPARATUS.

公开(公告)号：MY136768A

公开(公告)日：2008-11-28

申请号：MYPI20033358

申请日：2003-09-05

Applicant: BASF AG

Inventor： PINKOS ROLF DR ,  GERSTLAUER ACHIM DR ,  HAUBNER MARTIN DR ,  SCHLITTER STEPHAN DR ,  KAESHAMMER STEFAN DR ,  PFAFF KLAUS-PETER DR

IPC: C08G65/20

Abstract: THE PRESENT INVENTION PROVIDES A PROCESS FOR PREPARING MONO- OR DIESTERS OF POLYTETRAHYDROFURAN OR OF TETRAHYDROFFURAN COPOLYMERS BY POLYMERIZING TETRAHYDROFURAN IN THE PRESENCE OF AT LEAST ONE TELOGEN AND /OR OF A COMONOMER OVER AN ACIDIC CATALYST, WHEREIN THE POLYMERIZATION REACTOR IS STARTED UP USING A MIXTURE OF POLYTETRAHYDROFURAN ,THE MONO- OR DIESTERS OF POLYTETRAHYDROFURAN AND/OR OF THE THF COPOLYMERS, TETRAHYDROFURAN , ANY COMONOMER AND AT LEAST ONE CARBOXYLIC ACID AND /OR ONE CARBOXYLIC ANHYDRIDE.