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公开(公告)号：US3775362A
公开(公告)日：1973-11-27
申请号：US3775362D
申请日：1972-02-17
Applicant: BAYER AG
Inventor： BRASSAT B
Abstract: AN IMPROVED PROCESS FOR THE PRODUCTION OF PIGMENTED POLYAMIDES OBTAINED BY ACTIVATED ANIONIC POLYMERISATION OF A MIXTURE COMPRISING A LACTAM HAVING AT LEAST 6 RING MEMBERS, AN ACTIVATOR AND ALKALINE CATALYST IN THE PRESENCE OF PIGMENTS, THE IMPROVEMENT COMPRISING ADDING AN ALUMINIUM ALCOHOLATE TO SAID MIXTURE.
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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
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.
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公开(公告)号：US3772253A
公开(公告)日：1973-11-13
申请号：US3772253D
申请日：1972-05-18
Applicant: BAYER AG
Inventor： BRASSAT B
CPC classification number: C08G69/20
Abstract: AN IMPROVED PROCESS FOR THE PRODUCTION OF POLYAMIDES BY ACTIVATED ANIONIC POLYMERIZATION OF A POLYMERIZABLE MIXTURE COMPRISING A LACTAM, A CTALYST AND AN ACTIVATOR, WHEREIN AN ALUMINUM ALCOHOLATE IS ADDED TO SAID MIXUTRE.
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