申请人:Borealis AG
公开号:EP2386602A1
公开(公告)日:2011-11-16
Composition having a melt flow rate MFR2 (230 °C) measured according to ISO 1133 in the range of 15 to 30 g/10min,
said composition comprises a heterophasic propylene copolymer (H-PP1), a high melt flow polypropylene (HMF-PP), a styrenic block copolymer (SBC) and a mineral filler (F), wherein
(a) the heterophasic propylene copolymer (H-PP1) has a xylene cold soluble (XCS) content measured according to ISO 6427 in the range of 22.0 to 50.0 wt.-% and comprises
(a1) a polypropylene matrix (M1) and
(a2) an elastomeric copolymer (E1) comprising units derived from
- propylene and
- ethylene and/or C4 to C12 α-olefin,
(b) the melt flow rate MFR2 (230 °C) measured according to ISO 1133 of the high melt flow polypropylene (HMF-PP) is higher than the melt flow rate MFR2 (230 °C) measured according to ISO 1133 of the heterophasic propylene copolymer (H-PP1),
and
(c) the high melt flow polypropylene (HMF-PP) has melt flow rate MFR2 (230 °C) measured according to ISO 1133 of at least 40.0 g/10min.
根据 ISO 1133 测量,熔体流动速率 MFR2(230 °C)在 15 至 30 克/10 分钟范围内的组合物、
所述组合物包括杂相丙烯共聚物 (H-PP1)、高熔体流动性聚丙烯 (HMF-PP)、苯乙烯嵌段共聚物 (SBC) 和矿物填料 (F),其中
(a) 异相丙烯共聚物(H-PP1)的二甲苯冷溶性(XCS)含量根据 ISO 6427 测定在 22.0 至 50.0 wt.-%之间,并包括
(a1) 聚丙烯基体(M1)和
(a2) 弹性共聚物 (E1),该共聚物由以下单元组成
- 丙烯和
- 乙烯和/或 C4 至 C12 α-烯烃的单元组成、
(b) 高熔体流动聚丙烯(HMF-PP)根据 ISO 1133 测得的熔体流动速率 MFR2(230 ℃)高于杂相丙烯共聚物(H-PP1)根据 ISO 1133 测得的熔体流动速率 MFR2(230 ℃)、
以及
(c) 根据 ISO 1133 测量,高熔体流动性聚丙烯(HMF-PP)的熔体流动性 MFR2(230 ℃)至少为 40.0 克/10 分钟。