Polyimides serve as reinforcing rigid-backbone segments in nylon 6 copolymers. In a first embodiment, the copolymers are prepared from polyimides containing acylated caprolactam moieties pendant therefrom which provide sites for polycaprolactam grafts. In a second embodiment, polyimide oligomers end-capped with acyl-activated caprolactam rings permit the formation of block caprolactam copolymers that include polyimide reinforcing segments. The polyimide/nylon 6 copolymers have properties superior to those of nylon 6 and can also serve as compatibilizing agents.
聚
酰亚胺在尼龙6共聚物中作为加强刚性骨架的片段。在第一种实施例中,共聚物是由含有酰化己内酰胺基团的聚
酰亚胺制备的,这些基团提供了聚己内酰胺嫁接的位点。在第二种实施例中,以酰基活化的己内酰胺环结尾的聚
酰亚胺寡聚体允许形成包括聚
酰亚胺加强片段的块己内酰胺共聚物。聚
酰亚胺/尼龙6共聚物具有优于尼龙6的性能,并且还可以作为相容剂。