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Polypropene product innovation by reactor granule technology
Author(s) -
Cecchin Giuliano,
Morini Giampiero,
Pelliconi Anteo
Publication year - 2001
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200108)173:1<195::aid-masy195>3.0.co;2-a
Subject(s) - propene , granule (geology) , polymer , stiffness , copolymer , materials science , polymerization , catalysis , chemical engineering , composite material , toughening , polymer science , polymer chemistry , chemistry , organic chemistry , engineering , toughness
Continuous fine tuning of both chemistry and architecture of heterogeneous, isospecific MgCl 2 /TiCl 4 catalyst systems for propene polymerization has led 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/innovative propene‐based products has recently been developed that clearly outperform the previously available materials. In particular, a family of reactor‐grade polymers has been synthesized including homopolymers and heterophasic copolymers offering, respectively, an unprecedented relationship between fluidity and stiffness and between stiffness and impact strenght, and supersoft polypropene alloys that could not have been achieved even via mechanical blending.