<p>The invention provides propylene polymer comprising at least 80 mol % units derived from propylene and less than 0.5 mol% units derived from a tertiary diene wherein said tertiary diene is not a 1,4-diene said polymer comprising 1-50 tertiary double bonds per 10,000 carbon atoms of the main chain of said polymer. The polymer is obtained using a Ziegler Natta catalyst. The invention further provides a long chain branched propylene polymer obtainable from the afore-mentioned propylene polymer comprising tertiary double bonds.</p>
