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Terpolymerization of Ethylene/Propylene/Diene Monomers Using (2‐PhInd) 2 ZrCl 2 Metallocene Catalysts
Author(s) -
Ahmadjo Saeid,
Arabi Hassan,
Nekoomanesh Mehdi,
Zohuri Gholam Hossein,
Mortazavi Mohammad Mehdi,
Naderi Ghasem
Publication year - 2010
Publication title -
macromolecular reaction engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.37
H-Index - 32
eISSN - 1862-8338
pISSN - 1862-832X
DOI - 10.1002/mren.201000018
Subject(s) - ethylene , metallocene , ethylene propylene rubber , curing (chemistry) , polymer chemistry , epdm rubber , monomer , copolymer , polymerization , norbornene , catalysis , materials science , chemistry , organic chemistry , polymer , natural rubber
(2‐PhInd) 2 ZrCl 2 was synthesized and used for the first time in the terpolymerization of ethylene, propylene and 5‐ethylidiene‐2‐norbornene (ENB). It showed appropriate activity, high incorporation ability of the comonomers and good workup in terpolymerization. Increasing the [Al]/[Zr] ratio up to 188:1 increased ethylene content and decreased the ENB content of the terpolymer. The higher the polymerization temperature, the lower the ethylene content and higher the ENB content that was obtained. A higher propylene content in the P/E feed ratio and ENB concentration led to higher ENB content of the EPDM product. A compounded EPDM showed good curing properties compared to a commercial EPDM.