Polypropene product innovation by reactor granule technology

Continuous fine tuning of both chemistry and architecture of heterogeneous, isospecific MgCl2/TiCl4 catalyst systems for propene polymerization has le d to a significant improvement in their performances in terms of activity, stereoselectivity, and capability to control both molecular parameters and morphology of the resulting polymers. As a result, a number of improved/inn ovative propene-based products has recently been developed that clearly out perform the previously available materials. In particular, a family of reac tor-grade polymers has been synthesized including homopolymers and heteroph asic copolymers offering, respectively, an unprecedented relationship betwe en fluidity and stiffness and between stiffness and impact strenght, and su persoft polypropene alloys that could not have been achieved even via mecha nical blending.