Chain transfer reactions in metallocene catalyzed polymerization of allylbenzene

Authors
Byun, DJ Shin, DK Kim, SY
Citation
Dj. Byun et al., Chain transfer reactions in metallocene catalyzed polymerization of allylbenzene, POLYM BULL, 42(3), 1999, pp. 301-307
Citations number
19
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
POLYMER BULLETIN
ISSN journal
01700839 → ACNP
Volume
42
Issue
3
Year of publication
1999
Pages
301 - 307
Database
ISI
SICI code
0170-0839(199903)42:3<301:CTRIMC>2.0.ZU;2-U
Abstract
Allylbenzene was polymerized in the presence of two types of homogeneous zi rconocene catalysts (co-catalyst methylaluiminoxane). Selective chain termi nation through beta-hydride elimination or chain transfer to aluminum was o bserved depending upon the catalysts employed. The rac-Et(Ind)(2)ZrCl2, and rac-Me2Si(Ind)(2)ZrCl2, catalysts gave the polyallylbenzenes with saturate d end groups due to chain transfer to aluminum, while the Cp2ZrCl2 catalyst gave the polyallylbenzenes with vinylidene end groups due to beta-hydride elimination.