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Synthesis of Terminally Functionalized Isotactic Poly(propylene) with a [ArN(CH 2 ) 3 NAr]TiCl 2 (Ar = 2,6‐ i Pr 2 C 6 H 3 ) – MAO Catalyst System
Author(s) -
Tsubaki Shingo,
Jin Jizhu,
Sano Tsuneji,
Uozumi Toshiya,
Soga Kazuo
Publication year - 2001
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 - 10.1002/1521-3935(20010601)202:9<1757::aid-macp1757>3.0.co;2-0
Subject(s) - tacticity , methylaluminoxane , polymer chemistry , polymer , propylene oxide , catalysis , polymerization , chemistry , oligomer , materials science , organic chemistry , copolymer , metallocene , ethylene oxide
Syntheses of terminally hydroxylated and iodinated isotactic poly(propylene)s were carried out by the reactions of oxygen and iodine with polymer–Al bonds produced in propylene polymerization with [ArN(CH 2 ) 3 NAr]TiCl 2 (Ar = 2,6‐ i Pr 2 C 6 H 3 ) combined with methylaluminoxane (MAO) as a cocatalyst. The resulting isotactic polymer (ca. 45 wt.‐%) was separated from the atactic one by extraction with boiling ether. From 13 C NMR measurements of the isotactic fraction, it was found that the content of the terminally functionalized isotactic poly(propylene) was more than 80 mol‐% in all cases.