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Chain propagation rate constants for gas‐phase polymerization of propene and 1‐butene with Ziegler‐Natta catalysts
Author(s) -
Oliva Leone,
Di Serio Martino,
Peduto Nicolangelo,
Santacesaria Elio
Publication year - 1994
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.1994.021950119
Subject(s) - propene , polymerization , natta , ziegler–natta catalyst , polymer chemistry , catalysis , chemistry , chain transfer , 1 butene , butene , reaction rate constant , chain propagation , copolymer , monomer , polymer , radical polymerization , organic chemistry , kinetics , ethylene , physics , quantum mechanics
13 C NMR analysis of propene/1‐butene block copolymers obtained by gas‐phase polymerization with Ziegler‐Natta catalysts allows the determination of the propagation rate constants for the homopolymerization of the two monomers. They are very similar for the Solvay type catalyst δ‐TiCl 3 /AlMe 3 and the supported catalyst TiCl 4 /MgCl 2 /phthalate/AlMe 3 . The constant of propene polymerization is three times higher than that of 1‐butene polymerization. The high value of the constant found for propene polymerization is in agreement with the literature value determined by the stopped flow polymerization method.