Propylene butene copolymer

The invention provides amultimodal propylene butene random copolymer having a melt flow rate (MFR 2 ) of 1.0 to 20.0 g/10 min 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 MFR 2 of 0.5 to 20.0 g/10 min 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 MFR 2 of 0.5 to 20.0 g/10 min and a butene content of 4.0 to 20.0 wt%; wherein copolymers (A) and (B) are different.