A heterophasic polypropylene resin comprising a polypropylene homopolymer matrix phase (A) and an ethylene-propylene copolymer phase (B) dispersed within the matrix, wherein the xylene soluble fraction of the heterophasic polypropylene resin is in the range 20 to less than 50 wt %; the heterophasic polypropylene resin has an MFR2 of 0.01 to 50 g/10 min; the ethylene content of the xylene soluble fraction of the heterophasic polypropylene resin is in the range of at least 20 wt % to less than 50 wt %; the heterophasic polypropylene resin has a notched charpy impact strength at −20 C of at least 25 kJ/m2, preferably at least 50 kJ/m2; and wherein the MFR2 (Matrix)/MFR2(XS)≧5, preferably ≧10.
申请公布号
EP2729529(B1)
申请公布日期
2016.04.27
申请号
EP20120732680
申请日期
2012.07.06
申请人
BOREALIS AG
发明人
HAFNER, NORBERT;RESCONI, LUIGI;GAHLEITNER, MARKUS;WANG, JIMGBO;CASTRO, PASCAL;KULYABIN, PAVEL SERGEEVICH;IZMER, VYATCHESLAV;VOSKOBOYNIKOV, ALEXANDER;KONONOVICH, DMITRY;VIRKKUNEN, VILLE