Patent ID: 8367174

Claim:
Propylene copolymer (A) (a) comprising at least 1-hexene as a comonomer, (b) having a comonomer content in the range of 1.0 to 3.0 wt.-%, (c) having a xylene cold soluble fraction (XCS) equal or below 2.5 wt.-%, (d) being partially crystallized in the β-modification, and (e) fulfilling the equation (I.1) [ XCS ] [ C ] < 1.0 , ( I ⁢ .1 ) wherein [XCS] is the amount of xylene cold soluble fraction (XCS) of the propylene copolymer (A) given in weight percent, and [C] is the amount of comonomer of the propylene copolymer (A) in weight percent.