Ziegler-Natta Catalyst Polymerization is completely stereospecific. Either isotactic or syndiotactic,depending on catalyst. Polymer is linear,not branched. Example of catalyst:solution of TiCl,mixed with solution of(CHaCH2)3Al and heated for an hour. => Chapter 26 12 Chapter 26 12 Ziegler-Natta Catalyst • Polymerization is completely stereospecific. • Either isotactic or syndiotactic, depending on catalyst. • Polymer is linear, not branched. • Example of catalyst: solution of TiCl4 mixed with solution of (CH3CH2 )3Al and heated for an hour. =>