Polymerization of Styrene and 1,3-Butadiene by Catalyst Systems Based on Calix[4]arene Neodymium Complexes

Polymerization of styrene and 1,3-butadiene were performed by calix4]arene neodymium complexes using di-n-butylmagnesium and tri-iso-butylaluminum as cocatalyst respectively. The effect of the substituent groups in calix4]arene on the catalytic activity was first investigated.