Patent ID: 8779062

Claim:
Propylene copolymer composition (P) comprising (a) a polypropylene (A) having a comonomer content of not more than 1.0 wt.-%, the comonomers are C 5 to C 12 α-olefins, and (b) a propylene copolymer (B) having a comonomer content 4.0 to 20.0 wt.-%, the comonomers are C 5 to C 12 α-olefins, wherein further (i) the propylene copolymer composition (P) has a comonomer content of at least 2.5 wt.-%, the comonomers are C 5 to C 12 α-olefins, (ii) the ratio MFR (A)/MFR (P) is below 1.0 wherein MFR (A) is the melt flow rate MFR 2 (230° C.) [g/10 min] measured according to ISO 1133 of the polypropylene (A), MFR (P) is the melt flow rate MFR 2 (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).