公开(公告)号：MY134163A

公开(公告)日：2007-11-30

申请号：MYPI20006057

申请日：2001-12-21

Applicant: BASF AG

Inventor： DIETER KRAUB ,  DR RALF MOHRSCHLADT ,  DR HELMUT WINTERLING

IPC: C08G69/00 ,  C08G69/08 ,  C08G69/04 ,  C08G69/28

Abstract: POLYAMIDES ARE PREPARED FROM AMINONITRILES AND WATER BY (1)REACTING THE AMINONITRILES WITH WATER AT FROM 180 TO 350?C AND SUCH A PRESSURE IN THE RANGE FROM 30 TO 120 BAR THAT A GASEOUS PHASE IS PRESENT AS WELL AS A LIQUID PHASE, IN A FIRST REACTION STAGE, (2)EXPANDING THE REACTION MIXTURE OBTAINED IN THE FIRST REACTION STAGE VIA AN EVAPORATOR ZONE OR ADIABATICALLY WITH REMOVAL OF WATER AND AMMONIA INTO A SECOND REACTION STAGE , AND(3) POSTCONDENSING IN THE SECOND REACTION STAGE AT FROM 0.1 MBAR TO 5 BAR AND FROM 230 TO 320?C.

公开(公告)号：MY134046A

公开(公告)日：2007-11-30

申请号：MYPI20013202

申请日：2001-07-05

Applicant: BASF AG

Inventor： DR PETER BA?LER ,  DR HELMUT WINTERLING ,  DR ROLF-HARTMUTH FISCHER ,  DR WOLFGANG LOTH

IPC: C08G69/04 ,  C08G69/00 ,  C08G69/08 ,  C08G69/16

Abstract: THE CONTINUOUS PROCESS FOR PREPARING A POLYAMIDE BY REACTING AT LEAST ONE AMINONITRILE WITH WATER COMPRISES: (1) REACTING AT LEAST ONE AMINONITRILE WITH WATER IN THE PRESENCE OF AN ORGANIC LIQUID DILUENT AT FROM 90 TO 400?C AND FROM 0.1 TO 35 X 106 PA IN A FLOW TUBE CONTAINING A BRONSTED ACID CATALYST SELECTED FROM A BETA-ZEOLITE CATALYST, A SHEET-SILICATE CATALYST OR A TITANIUM DIOXIDE CATALYST COMPRISING FROM 70 TO 100% BY WEIGHT OF ANATASE AND FROM 0 TO 30% BY WEIGHT OF RUTILE AND IN WHICH UP TO 40% BY WEIGHT OF THE TITANIUM DIOXIDE MAY BE REPLACED BY TUNGSTEN OXIDE, TO OBTAIN A REACTION MIXTURE,(2) FURTHER REACTING THE REACTION MIXTURE AT FROM 150 TO 400?C AND A PRESSURE WHICH IS LOWER THAN THE PRESSURE IN STAGE 1 IN THE PRESENCE OF A BRONSTED ACID CATALYST SELECTED FROM A BETAZEOLITE CATALYST.A SHEET-SILICATE CATALYST OR A TITANIUM DIOXIDE CATALYST COMPRISING FROM 70 TO 100% BY WEIGHT OF ANATASE AND FROM 0 TO 30% BY WEIGHT OF RUTILE AND IN WHICH UP TO 40% BY WEIGHT OF THE TITANIUM DIOXIDE MAY BE REPLACED BY TUNGSTEN OXIDE. THE TEMPERATURE AND PRESSURE BEING SELECTED SO AS TO OBTAIN A FIRST GAS PHASE AND A FIRST LIQUID PHASE OR A FIRST SOLID PHASE OR A MIXTURE OF FIRST SOLID AND FIRST LIQUID PHASES AND SO THAT THE FIRST GAS PHASE IS SEPARATED FROM THE FIRST LIQUID PHASE OR FIRST SOLID PHASE OR FROM THE .MIXTURE OF FIRST LIQUID AND FIRST SOLID PHASES. AND (3) ADMIXING THE FIRST LIQUID OR THE FIRST SOLID PHASE OR THE MIXTURE OF FIRST LIQUID AND FIRST SOLID PHASES WITH A GASEOUS OR LIQUID PHASE COMPRISING WATER AT FROM 150 TO 370?C AND FROM 0.1 TO 30 X 106 Pa, TO OBTAIN A PRODUCT MIXTURE.