Nickel catalysts for the synthesis of ultra-high molecular weight polyethylene
نویسندگان
چکیده
منابع مشابه
Synthesis of high molecular weight polyethylene using FI catalyst
A FI Zr-based catalyst of bis[N-(3,5-dicumylsalicylidene)-2′,6′diisopropylanilinato]zirconium(IV) dichloride was prepared and used for polymerization of ethylene. The effects of reaction conditions on the polymerization were examined in detail. The increase in ethylene pressure and rise in polymerization temperature up to 35 oC were favorable for catalyst/MAO to raise the catalytic activity as...
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A series of new binuclear neutral κ-N,O-chelated Ni(II) complexes [(H2C)n{[(2,6-R2-4-yl-C6H2)NdC(H)-(3,5-I2-2-O-C6H2)-κ-N,O]Ni(CH3)(pyridine)}2] (R ) iPr, 3,5-(CF3)2C6H3; n ) 0, 1) are reported. The complexes are single-component catalyst precursors for ethylene polymerization. Catalyst activities exceed those of mononuclear analogues studied substantially. With 3.4 × 10 TO h, high molecular we...
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متن کاملsynthesis of high molecular weight polyethylene using fi catalyst
a fi zr-based catalyst of bis[n-(3,5-dicumylsalicylidene)-2′,6′diisopropylanilinato]zirconium(iv) dichloride was prepared and used for polymerization of ethylene. the effects of reaction conditions on the polymerization were examined in detail. the increase in ethylene pressure and rise in polymerization temperature up to 35 oc were favorable for catalyst/mao to raise the catalytic activity as...
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ژورنال
عنوان ژورنال: Science Bulletin
سال: 2020
ISSN: 2095-9273
DOI: 10.1016/j.scib.2020.04.009