SYNTHESIS OF A TELECHELIC POLYPROPYLENE WITH A VANADIUM-BASED LIVING POLYMERIZATION CATALYST

Citation
M. Murata et al., SYNTHESIS OF A TELECHELIC POLYPROPYLENE WITH A VANADIUM-BASED LIVING POLYMERIZATION CATALYST, Macromolecular rapid communications, 19(5), 1998, pp. 267-270
Citations number
15
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Polymer Sciences
ISSN journal
1022-1336
Volume
19
Issue
5
Year of publication
1998
Pages
267 - 270
Database
ISI
SICI code
1022-1336(1998)19:5<267:SOATPW>2.0.ZU;2-J
Abstract
The V(acac)(3) (acac = acetylacetonato)/ALEt(2)Cl catalyst is known to promote the living polymerization of propylene at low temperature. In the present study, the catalyst was modified by contacting with a,ome ga-unconjugated diene compounds, and the resulting catalyst was applie d to propylene polymerization. The polymer produced shows a bimodal mo lar mass distribution, where the molecular weight of the higher molecu lar weight portion is twice that of the lower molecular weight portion . By using the CO quenching technique, it was found that the polymer w ith the higher molecular weight has a telechelic structure.