Patent ID: 8568845

Claim:
A heterophasic polymer composition, comprising a matrix comprising a propylene homopolymer and/or a propylene copolymer having an amount of comonomer units of less than 1.0 wt %, an elastomeric polypropylene which is dispersed within the matrix and comprises comonomer units derived from ethylene and/or a C4 to C12 alpha-olefin, the heterophasic polymer composition having an amorphous fraction AM in an amount of 2.0 to 7.5 wt %, and the amorphous fraction AM having an amount of ethylene- and/or C4 to C12 alpha-olefin-derived comonomer units of 20 to 45 wt %, the heterophasic polymer composition having an amount of ethylene- and/or C4 to C12 alpha-olefin-derived comonomer units of from 0.8 wt % to less than 1.8 wt %.