Disclosed is a process for the preparation of multilayered, shaped articles having high transparency and low haze and comprising one or more thermoplastic polymers selected from polyesters, polycarbonates, and polyarylates, and a copolyamide or a transamidized, homogeneous blend of a least two polyamides. The thermoplastic polymer components and the polyamide components have refractive indices which differ by about 0.006 to about −0.0006. The small difference in the refractive indices enable the incorporation of regrind into one or more of the layers of the article while maintaining high clarity. These articles can exhibit improved excellent barrier properties and good melt processability while retaining excellent mechanical properties. Metal catalysts can be incorporated into one or more layers to impart oxygen-scavenging properties.
本发明公开了一种制备具有高透明度和低浑浊度的多层成型物的方法,其中包括至少一种聚酯、聚
碳酸酯和聚芳酯等热塑性聚合物以及共聚酰胺或至少两种聚酰胺的转酰胺化均质混合物。热塑性聚合物组分和聚酰胺组分的折射率之间的差异约为0.006至约-0.0006。折射率之间的微小差异使得可以将再生料合并到成型物的一个或多个层中,同时保持高透明度。这些成型物可以展现出优异的阻隔性能和良好的熔融加工性能,同时保持优异的机械性能。
金属催化剂可以被纳入到一个或多个层中,以赋予氧吸收性能。