公开(公告)号：US3793258A

公开(公告)日：1974-02-19

申请号：US3793258D

申请日：1971-07-16

Applicant: BAYER AG

Inventor： REINKING K ,  BRASSAT B ,  SCHNEIDER K

IPC: C08G69/20 ,  C08G20/18

CPC classification number: C08G69/20

Abstract: THE INVENTION RELATES TO AN IMPROVED PROCESS FOR THE ANIONIC POLYMERIZATION OF A LACTAM HAVIMG ATLEAST 5 RING MEMBERS IN THE PRESENCE OF AN ALKALINE CATALYST AND AN ACTIVATOR, WHEREIN AN ALKALI METAL LACTAMATE, THE CATALYST, DISSOLVED IN A MIXTURE OF A A-PYRROLIDONE AND A LACTAM MEMBER SELECTED FROM THE GROUPS CONSISTING OF A SINGLE LACTAMAND A MIXTURE OF LACTAMS HAVING AT LEAST 6 RING MEMBERS, IS ADDED TO THE LACTAM MELT CONTAINING THE ACTIVATOR.

公开(公告)号：US3790516A

公开(公告)日：1974-02-05

申请号：US3790516D

申请日：1972-03-08

Applicant: BAYER AG

Inventor： ROSENBAUM H ,  REINKING K ,  RUDOLPH H ,  DHEIN R

IPC: C08G69/00 ,  C08G69/18 ,  C08G20/18

CPC classification number: C08G69/18

Abstract: A POURABLE, POLYMERIZABLE LACTAM-CATALYST-ACTIVATOR MIXTURE WHICH IS STABLE ON STORAGE COMPRISING AT LEAST ONE LACTAM HAVING MORE THAN 5 RING MEMBERS, AT LEAST ONE ACTIVATOR AND A MEMBER OF THE GROUP CONSISTING OF AN ALKALINE CATALYST AND AN 8 TO 90% BY WEIGHT SOLUTION OF AN ALKALINE CATALYST IN A LACTAM HAVING MORE THAN 5 RING MEMBERS SAID CATALYST OR SOLUTION OF THE CATALYST AND OPTIONALLY SAID ACTIVATOR BEING EMBEDDED IN AN ORGANIC MATERIAL.