| 主权项 |
1. Propylene copolymer composition (P) comprising
(a) a polypropylene (A) having a comonomer content of not more than 1.0 wt.-%, the comonomers are C5 to C12 α-olefins, and (b) a propylene copolymer (B) having a comonomer content 4.0 to 20.0 wt.-%, the comonomers are C5 to C12 α-olefins, wherein further (i) the propylene copolymer composition (P) has a comonomer content of at least 2.5 wt.-%, the comonomers are C5 to C12 α-olefins, (ii) the ratio MFR (A)/MFR (P) is below 1.0
whereinMFR (A) is the melt flow rate MFR2 (230° C.) [g/10 min] measured according to ISO 1133 of the polypropylene (A),MFR (P) is the melt flow rate MFR2 (230° C.) [g/10 min] measured according to ISO 1133 of the propylene copolymer composition (P), and (iii) optionally the weight ratio of the polypropylene (A) to the propylene copolymer (B) is in the range of 30/70 to 70/30 wherein further the propylene copolymer composition (P) comprises (a) at least 20.0 wt-%. of a crystalline fraction having a lamella thickness of at least 5.70 nm, and (b) at least 10.0 wt-%. of a crystalline fraction having a lamella thickness of below than 3.0 nm, said crystalline fractions are determined by the stepwise isothermal segregation technique (SIST). |
