Abstract

Macrotricyclic poly(vinyl ether)s of controlled molar masses and MWD are prepared by synthesizing in a first step a three-arm star-shaped poly(vinyl ether) from a diheterohexafunctional precursor by living cationic polymerization. The cyclization of each star arm is then achieved under highly diluted conditions by the promoted intramolecular addition of the active end groups onto the three remaining head functions. High cyclization yields are obtained without the detectable formation of polycondensates resulting from intermolecular reaction

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