Polypropylene based compositions, multi-layer barrier structures comprising them and their preparation process. The composition comprises a polypropylene grafted based resin as main component, a polypropylene homo- or copolymer, an ethylene copolymer based component and a nucleator which acts as promoter of the adhesion of the composition.
聚
丙烯基组合物、由其构成的多层阻隔结构及其制备工艺。这种组合物包括一种聚
丙烯接枝
树脂(作为主要成分)、一种聚
丙烯均聚物或共聚物、一种
乙烯共聚物成分和一种成核剂(可促进组合物的粘合)。