Temperature effect on ethylene polymerization with a catalyst prepared by mixing Mg(C2H5)(n-C4H9), Al(C2H5)(1.5)Cl-1.5 and iron(II)bis (imino)pyridyl complex

Ohnishi R; Konakazawa T; Amano J; Fujimura T

Polymer Bulletin, Vol.56, No.1, 1-8, 2006

DOI10.1007/s00289-005-0460-8 Export Citation

Temperature effect on ethylene polymerization with a catalyst prepared by mixing Mg(C2H5)(n-C4H9), Al(C2H5)(1.5)Cl-1.5 and iron(II)bis (imino)pyridyl complex

Ohnishi R, Konakazawa T, Amano J, Fujimura T

Ethylene polymerization was conducted with a catalyst prepared by mixing 2,6-bis{1-[2,6-(diisopropylphenyl)imino]ethyl}pyridine iron dichloride, Mg(C2H5)(n-C4H9) and Al(C2H5)(1.5)Cl-1.5 in the presence of common alkylaluminium as cocatalyst. Both the activity and the molecular weight of polymers produced were markedly dependent upon the polymerization temperature. The end-group analysis of polymers showed that the molecular weight of polymers produced at higher temperature was reduced by chain transfer with Al(C2H5)(3) in addition to beta-hydrogen elimination.