Micron-granula polyolefin with self-immobilized nickel and iron diimine catalysts bearing one or two allyl groups
Corresponding Author
Guoxin Jin
Laboratory of Molecular Catalysis and Innovative Material, Department of Chemistry, Fudan University, Shanghai 200433, China
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
Laboratory of Molecular Catalysis and Innovative Material, Department of Chemistry, Fudan University, Shanghai 200433, ChinaSearch for more papers by this authorDao Zhang
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
Search for more papers by this authorCorresponding Author
Guoxin Jin
Laboratory of Molecular Catalysis and Innovative Material, Department of Chemistry, Fudan University, Shanghai 200433, China
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
Laboratory of Molecular Catalysis and Innovative Material, Department of Chemistry, Fudan University, Shanghai 200433, ChinaSearch for more papers by this authorDao Zhang
State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
Search for more papers by this authorAbstract
Self-immobilized nickel and iron diimine catalysts bearing one or two allyl groups of [ArNC]2(C10H6)NiBr2 [Ar = 4-allyl-2,6-(i-Pr)2C6H2] (1), [ArNC(Me)][Ar′N C(Me)]C5H3NFeCl2 [Ar = Ar′ = 4-allyl-2,6-(i-Pr)2C6H3, Ar = 2,6-(i-Pr)2C6H3, and Ar′ = 4-allyl-2,6-(i-Pr)2C6H3] were synthesized and characterized. All three catalysts were investigated for olefin polymerization. As a result, these catalysts not only showed high activities as the catalyst free from the allyl group, such as [ArNC]2C10H6NiBr2 (Ar = 2,6-(i-Pr)2C6H2)], but also greatly improved the morphology of polymer particles to afford micron-granula polyolefin. The self-immobilization of catalysts, the formation mechanism of microspherical polymer, and the influence on the size of the particles are discussed. The molecular structure of self-immobilized nickel catalyst 1 was also characterized by crystallographic analysis. © 2004 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 42: 1018–1024, 2004
Supporting Information
The Supplementary Material of the crystallographic data (excluding structure factors) for the structure of catalyst 1 in this article can be found via the Internet at http://www.interscience.wiley.com/jpages/0887-624X/suppmat .
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