G. Collina et al., HIGHLY FLEXIBLE HETEROPHASIC COPOLYMERS THROUGH THE NOVEL MULTICATALYSTS REACTOR GRANULE TECHNOLOGY, Polymer bulletin, 39(2), 1997, pp. 241-247
New heterophasic copolymers with high rubber content have been synthes
ized by combining heterogeneous Ti-based catalysts with metallocenes.
The molecular, morphological and mechanical features of these material
s were evaluated: it was pointed out that the new copolymers, having m
ore than 60Wt.% of rubber, perform as reinforced elastomers whereas tr
aditional ones show a more plastomeric behaviour. This suggests that n
ew polyolefin materials can augment rather than compete with the tradi
tional ones.