Notes Copolymerization of Propylene with Acrylonitrile or Methyl Acrylate Using Et(Ind)₂ZrCl₂/MAO or Et(H₄Ind)₂ZrCl₂/MAO Catalyst System

Abstract

Copolymerization of propylene with acrylonitrile (AN) or methyl acrylate (MA) catalyzed by Et(Ind)₂ZrCl₂ (1)/MAO or Et(H₄Ind)₂ZrCl₂ (2)/MAO resulted in polypropylene homopolymer with zero incorporation of either of the comonomer. However, use of Et₂AlCl or AlMe₃ with the zircononcene catalysts resulted in some incorporation of the comonomer into polypropylene, but in amounts negligible to cause a significant change in the yield and properties (tacticity and melting point) of the copolymer compared to those of polypropylene obtained under identical conditions.