FTP, name this type of polymerization, named for a German and an Italian chemist, the former of whom won the 1963 Nobel Prize in Chemistry.
This process proceeds via the Cossee-Arlman mechanism, that is, by complexation of reactants to adsorbed transition metals, so it can produce stereoregular compounds.  In the case of olefins, the catalysts for this reaction are a transition metal halide and an alkyl aluminum compound.  Having isotactic and syndiotactic varieties, it has numerous advantages over free radical methods, including the ability to synthesize straight chain compounds.  FTP, name this type of polymerization, named for a German and an Italian chemist, the former of whom won the 1963 Nobel Prize in Chemistry.
This process proceeds via the Cossee-Arlman mechanism, that is, by complexation of reactants to adsorbed transition metals, so it can produce stereoregular compounds.  
Ziegler-Natta polymerization