Propylene butene copolymer

A multimodal propylene butene random copolymer having a melt flow rate (MFR2) of 1.0 to 20.0 g/10 min when determined under 2.16 kg load at 230° C. and a butene content of 5.0 to 20.0 wt %, wherein said copolymer is prepared using a single site catalyst and wherein said copolymer comprises:

• (i) 30 to 70 wt % of a propylene butene copolymer (A) having an MFR2 of 0.5 to 20.0 g/10 min when determined under 2.16 kg load at 230° C. and a butene content of 2.0 to 10.0 wt %;
• and
• (ii) 70 to 30 wt % of a propylene butene copolymer (B) having an MFR2 of 0.5 to 20.0 g/10 min when determined under 2.16 kg load at 230° C. and a butene content of 4.0 to 20.0 wt %;
• wherein copolymers (A) and (B) are different, wherein said multimodal copolymer is substantially free of ethylene.