11th International Seminar on Polymer Science and Technology Iran Polymer and Petrochemical Institute, Tehran, Iran 6-9 October 2014 , 2014-10-06

Title : ( Ethylene polymerization with hybrid nickel α-diimine/Cp2TiCl2/MgCl2 catalyst to prepare blends of linear and branched polyethylene )

Authors: H. Jafariyan , M. Mortazavi , S. Ahmadjo , Gholamhossein Zohuri , S. Dehgjani , A. Farhadi ,

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Abstract Different combinations of metallocene and late transition metal (LTM) catalysts are used in hybrid and mixed states in ethylene polymerization to tailor polyethylenes with new properties. A mixture of Ni-based LTM and Cp2TiCl2 is added to MgCl2 support to obtain hybrid catalyst. A synergistic effect is observed for activity of the hybrid LTM/metallocene catalyst. Blends of linear and highly branched polyethylene are obtained when ethylene is polymerized at low temperatures (30°C), while blends of linear and low branched polyethylene are obtained at higher temperature (50°C). By changing reaction parameters like, LTM/metallocene ratio in hybrid catalyst, and polymerization temperature, versatile polymer thermal behavior are obtained.

Keywords

, Keywords: Hybrid catalyst, linear and branched polyethylene blends,
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@inproceedings{paperid:1044241,
author = {H. Jafariyan and M. Mortazavi and S. Ahmadjo and Zohuri, Gholamhossein and S. Dehgjani and A. Farhadi},
title = {Ethylene polymerization with hybrid nickel α-diimine/Cp2TiCl2/MgCl2 catalyst to prepare blends of linear and branched polyethylene},
booktitle = {11th International Seminar on Polymer Science and Technology Iran Polymer and Petrochemical Institute, Tehran, Iran 6-9 October 2014},
year = {2014},
location = {Tehran, IRAN},
keywords = {Keywords: Hybrid catalyst; linear and branched polyethylene blends; MgCl2.},
}

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%0 Conference Proceedings
%T Ethylene polymerization with hybrid nickel α-diimine/Cp2TiCl2/MgCl2 catalyst to prepare blends of linear and branched polyethylene
%A H. Jafariyan
%A M. Mortazavi
%A S. Ahmadjo
%A Zohuri, Gholamhossein
%A S. Dehgjani
%A A. Farhadi
%J 11th International Seminar on Polymer Science and Technology Iran Polymer and Petrochemical Institute, Tehran, Iran 6-9 October 2014
%D 2014

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