公开(公告)号：US3621001A

公开(公告)日：1971-11-16

申请号：US3621001D

申请日：1968-07-08

Applicant: BASF AG

Inventor： STEINHOFER ADOLF ,  DOERFEL HELMUT ,  FALKENSTEIN GEORG ,  JESERICH WOLFGANG-DIETER ,  REICHEL BERND

IPC: C08G69/20 ,  C08G20/18

CPC classification number: C08G69/20

Abstract: A process for accelerating the base catalyzed polymerization of lactams carried out at temperatures of 80* to 200* C. using N,N'' -disubstituted arylenedicarbamoyl lactams as activators.

公开(公告)号：US3562221A

公开(公告)日：1971-02-09

申请号：US3562221D

申请日：1968-01-15

Applicant: BASF AG

Inventor： STEINHOFER ADOLF ,  DOERFEL HELMUT ,  FALKENSTEIN GEORG ,  JESERICH WOLFGANG-DIETER

IPC: C08G69/20 ,  C08G20/00

CPC classification number: C08G69/20

Abstract: A PROCESS FOR ACCELERATING ANIONIC POLYMERIZATION OF LACTAMS IN THE PRESENCE OF ALKALINE POLYMERIZATION CATALYSTS AND ACTIVATORS AT FROM 80* TO 200*C. IN THE PRESENCE OR ABSENCE OF INERT SOLVENTS, IN WHICH N-(N'',N''-DIPHENYLCARBAMOYL)-LACTAMS HAVING FOUR TO THIRTEEN MEMBERS IN THE LACTAM RING ARE USED AS ACTIVATORS.