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Improved scratch resistance polypropylene at high flow

机译:高流动性时改进的耐刮擦聚丙烯

摘要

An injection molded article comprising at least 60% by weight of a heterophasic propylene copolymer (HECO), said heterophasic propylene copolymer (HECO) (a) comprising a matrix (M) which is a polypropylene (PP), said said comprising polypropylene (PP) at least three polypropylene fractions (PP1), (PP2) and (PP3), the three polypropylene fractions (PP1), (PP2) and (PP3) differing from each other by the melt flow rate MFR2 (230 ° C), measured in accordance with ISO 1133, and having at least one of the three polypropylene fractions (PP1), (PP2) and (PP3) an MFR2 melt flow rate (230 ° C), measured in accordance with the ISO 1133, in the range of 1.0 to 20.0 g / 10 min, and (b) an elastomeric propylene copolymer (EC) dispersed in said matrix (M), in which (i) said propylene copolymer Heterophasic (HECO) has a melt flow rate MFR2 (230 ° C), measured in accordance with ISO 1133, of equal or more than 20.0 g / 10 min and (ii) the amorphous phase (A M) of the xylene cold soluble fraction (XCS) of the heterophasic propylene copolymer (HECO) has an intrinsic viscosity (IV), measured in accordance with ISO 1628-1 (at 135 ° C in decalin), of equal or greater than 2.0 dl / g, in which the injection molded article is a housing or a bucket.
机译:包含至少60重量%的多相丙烯共聚物(HECO)的注塑制品,所述多相丙烯共聚物(HECO)(a)包括基质(M),该基质是聚丙烯(PP),所述包含聚丙烯(PP) )至少三个聚丙烯馏分(PP1),(PP2)和(PP3),三个聚丙烯馏分(PP1),(PP2)和(PP3)的熔体流动速率MFR2(230°C)互不相同根据ISO 1133的规定,并具有至少三个聚丙烯馏分(PP1),(PP2)和(PP3)之一,根据ISO 1133测量的MFR2熔体流动速率(230°C),范围为1.0至20.0 g / 10分钟,以及(b)分散在所述基质(M)中的弹性体丙烯共聚物(EC),其中(i)所述丙烯共聚物杂相(HECO)的熔体流动速率MFR2(230°C) (根据ISO 1133测得)等于或大于20.0 g / 10分钟,以及(ii)二甲苯冷可溶级分(XCS)的非晶相(AM)的多相丙烯共聚物(HECO)的特性粘度(IV)根据ISO 1628-1(在135°C下的十氢化萘中)测得等于或大于2.0 dl / g,其中注塑制品为房屋或水桶。

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