Hua-yi LI, You-liang HU. Progress of Internal and External Donors Used in the Ziegler-Natta Catalysts for Propylene Polymerization[J]. Polymer Bulletin, 2011,24(10):94-98.
Hua-yi LI, You-liang HU. Progress of Internal and External Donors Used in the Ziegler-Natta Catalysts for Propylene Polymerization[J]. Polymer Bulletin, 2011,24(10):94-98. DOI: 10.14028/j.cnki.1003-3726.2011.10.014.
This article reviews the progress of internal and external donors used in the Ziegler-Natta catalysts for propylene polymerization. The internal donors include1
3-diether
diol ester
butanedioic diester and 1-ether3-ketone compound. The external donors include mixture of external donors and silane containing N atoms. The requirement for cleanness of polypropylene is becoming higher and higher. The internal and external donors are not only required to prepare high performance Ziegler- Natta catalysts
but also are clean. Thus
this article also discusses the cleanness of the internal and external donors.