Provided are: an impact-resistant polyamide composition which exhibits improved toughness and improved impact strength and which can be easily polymerized in-situ in a molding stage; and a novel process for the production of the same. The novel process comprises initiating the anionic polymerization of ε-caprolactam in the presence of (A) an anionic polymerization catalyst, (B) an anionic polymerization activator, (C) 2.0 to 30% by weight (relative to the ε-caprolactam) of an N,N-disubstituted vinylbenzylamine, and (D) a radical polymerization initiator, and subjecting the resulting system to reaction under conditions comprising a reaction temperature of the reaction system of 120 to 180°C and a reaction time of 10 seconds to 120 minutes. Since radical polymerization in the process is conducted without hindering the anionic polymerization, an alloyed polyamide composed of both polycaprolactam and poly(N,N-disubstituted vinylbenzylamine) can be obtained.
本发明提供了:一种抗冲击聚酰胺组合物,该组合物具有更好的韧性和冲击强度,可 以在成型阶段方便地进行原位聚合;以及一种生产该组合物的新工艺。该新型工艺包括在(A)阴离子聚合催化剂,(B)阴离子聚合活化剂,(C)2.0-30%(相对于ε-己内酰胺)重量的 N,N-二取代
乙烯基苄胺,以及 (D) 自由基聚合
引发剂,并使所得体系在反应体系的反应温度为 120-180°C 和反应时间为 10 秒至 120 分钟的条件下进行反应。由于在该工艺中进行自由基聚合时不会妨碍阴离子聚合,因此可以获得由聚己内酰胺和聚(N,N-二取代
乙烯基苄胺)组成的合
金聚酰胺。