申请人:SUMITOMO CHEMICAL COMPANY LIMITED
公开号:EP3842489A1
公开(公告)日:2021-06-30
Provided is a heterophasic propylene polymer material having excellent low temperature impact resistance, tensile strength, and tensile elongation. A heterophasic propylene polymer material contains a propylene homopolymer component (A), and an ethylene-propylene copolymer component (B1) and an ethylene-propylene copolymer component (B2) having different formulations from each other, wherein a content of the propylene homopolymer component (A), a content of the ethylene-propylene copolymer component (B1), and a content of the ethylene-propylene copolymer component (B2) are 40 to 70 parts by mass, 15 to 54 parts by mass, and 6 to 15 parts by mass, respectively, with respect to 100 parts by mass of a total content of the propylene homopolymer component (A) and the ethylene-propylene copolymer components (B1) and (B2).
本发明提供了一种杂相丙烯聚合物材料,它具有优异的低温抗冲击性、拉伸强度和拉伸伸长率。一种杂相丙烯聚合物材料包含丙烯均聚物组分(A)、乙烯-丙烯共聚物组分(B1)和乙烯-丙烯共聚物组分(B2),它们的配方互不相同,其中丙烯均聚物组分(A)的含量、乙烯-丙烯共聚物组分(B1)的含量、乙烯-丙烯共聚物组分(B2)的含量和乙烯-丙烯共聚物组分(B1)的含量都不同、和乙烯-丙烯共聚物组分(B2)的含量,相对于丙烯均聚物组分(A)和乙烯-丙烯共聚物组分(B1)和(B2)总含量的 100 重量份,分别为 40 至 70 重量份、15 至 54 重量份和 6 至 15 重量份。