✦ LIBER ✦

Homogeneous organolanthanide catalysts for the selective polymerization of styrene without aluminium cocatalysts

✍ Scribed by Denise Baudry-Barbier; Elise Camus; Alain Dormond; Marc Visseaux

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 53 KB
Volume: 13
Category: Article
ISSN: 0268-2605
DOI: 10.1002/(sici)1099-0739(199911)13:11<813::aid-aoc897>3.0.co;2-#

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✦ Synopsis

Anionic or neutral allylic samarium or neodymium species catalyse the polymerization of styrene (catalyst/styrene ratio = 1:1000) without addition of a cocatalyst. Random syndiotacticrich material is obtained from tetra-allyllanthanides, whereas neutral trisallyl-lanthanides or anionic ansa-bis(cyclopentadienyl)bisallyl-lanthanides afford isotactic-rich polystyrene.