SINGLE-SITE CATALYST BASED IMPACTED COPOLYMERS WITH EXCELLENT MECHANICAL AND OPTICAL PROPERTIES

The present invention relates to a heterophasic propylene polymer (HECO) comprising a) 65 to 90 wt.% of a matrix component (M) selected from a propylene homo- or random copolymer (PP); and b) 10 to 35wt.% of an ethylene-propylene rubber (EPR), dispersed in the propylene homo- or random copolymer (PP), whereby the xylene cold soluble fraction (XCS) of the heterophasic propylene polymer (HECO) has- an ethylene content of 10.0 to 17.0 wt.%; - an intrinsic viscosity (IV), determined according to ISO 1628-1:2009, of at least 1.6 dl/g; and the xylene cold insoluble fraction (XCI) of the heterophasic propylene polymer (HECO) has 2, 1-erythro regiodefects in an amount of at least 0.4 mol% to a composition comprising the heterophasic propylene polymer (HECO), a process for its preparation and anarticle comprising the heterophasic propylene polymer (HECO) or the composition comprising the same. 本发明涉及一种多相丙烯聚合物(HECO)，其包含a)65至90重量％的选自丙烯均聚物或无规共聚物(PP)的基体组分(M)；和b)10至35重量％的分散在所述丙烯均聚物或无规共聚物(PP)中的乙烯-丙烯橡胶(EPR)，其中所述多相丙烯聚合物(HECO)的