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- W2386138545 abstract "A nickel catalyst,bis( α naphthyl) 2,3 butanediimine nickel(Ⅱ)dichloride {[C 10 H 7— N C (CH 3)C (CH 3) NC 10 H 7 ]NiCl 2} was synthesized and then activated by methylaluminoxane(MAO).By using this catalytic system branched polyethylenes(PE)of bimodal (wide) molecular weight distribution(MWD) were prepared.The effects of various conditions,including the polymerization temperature ( T p),ethylene pressure and n Al / n Ni on the catalytic activity,molecular weight,degree of branching and branching types of PE were investigated.The catalytic activity and the resulting polymer microstructure were sensitive to the polymerization temperature.The microstructure of the resulting PE was determined by FTIR and 13 C NMR.According to Gel Permeation Chromatography(GPC),the resulting PE exhibited a bimodal molecular weight distribution.The influence of the existence of three possible stereo isomers of the Ni single site catalyst with unsymmetrical imino substituted bulky ligands on the molecular weight distribution was discussed." @default.
- W2386138545 created "2016-06-24" @default.
- W2386138545 creator A5007257394 @default.
- W2386138545 date "2005-01-01" @default.
- W2386138545 modified "2023-09-25" @default.
- W2386138545 title "BIMODAL (WIDE)BRANCHED POLYETHYLENE OBTAINED WITH A (α-DIIMINE)NICKEL DICHLORIDE/MAO CATALYST" @default.
- W2386138545 hasPublicationYear "2005" @default.
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