Propylene copolymers containing styrene units

Abstract

Isotactic-polypropylene-based copolymers having a homogenous distribution of recurring units of formula (1): where R is a hydrogen, halide radical or a hydrocarbyl radical optionally containing an atom selected from oxygen, nitrogen, sulphur, phosphorus and silicon, and n is an integer ranging from 1 to 3; said copolymer having a 13C-NMR spectrum wherein the resonance signals attributed to the links between different monomeric units fall around 30, 34, 35, 45 and 47 ppm and present intensities at least two times higher than the resonance signals attributed to styrene—styrene sequences around 41 ppm and 44-46 ppm; a process for preparing said copolymers carried out in the presence of homogeneous catalytic systems comprising a metallocene compound and a cocatalyst; functionalized copolymers obtained from said isotactic-polypropylene-based copolymers; and graft copolymers comprising said isotactic-polypropylene-based copolymers as backbones.

Dependencies are inferred from the claim text.