Syntheses of isobutylalumoxanes by triisobutylaluminum hydrolysis and their use as activators of dimethylated zirconocene in propylene polymerization
作者： N. M. Bravaya , E. E. Faingol’d , O. N. Babkina , S. L. Saratovskikh , A. N. Panin
DOI: 10.1007/S11172-013-0078-1
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摘要: Isobutylalumoxanes of different composition were synthesized by the hydrolysis triisobutylaluminum (TIBA) with crystalline hydrate CuSO4·5H2O and water taken as cooled ice or vapor. The formed alumoxanes degree participation in their formation was monitored 1H NMR. TIBA on is rather selective method synthesis alumoxanes. used for activation dimethylated zirconocenes rac-Me2Si(2-Me,4-PhInd)2ZrMe2 rac-Et(2-MeInd)2ZrMe2 propylene polymerization at molar ratios Al/Zr = 50–750. It concluded that afforded several products structures activating ability. systems oligomeric forms isobutylalumoxanes, especially those obtained water, showed highest activity.
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sci-hub.se 参考文章(21)
T. Dall’Occo, M. Galimberti, I. Camurati, M. Destro, O. Fusco, D. Brita, Alumoxanes alternative to MAO: Synthesis and characterization Springer, Berlin, Heidelberg. pp. 142- 149 ,(1999) , 10.1007/978-3-642-60178-1_14
S. Srinivasa Reddy, A comparative study of tetraisobutyldialuminoxane and methylaluminoxane as cocatalysts for Cp2ZrCl2 catalyzed ethylene polymerization Polymer Bulletin. ,vol. 36, pp. 317- 323 ,(1996) , 10.1007/BF00319231
C Jeff Harlan, Simon G Bott, Andrew R Barron, None, Three-Coordinate Aluminum Is Not a Prerequisite for Catalytic Activity in the Zirconocene-Alumoxane Polymerization of Ethylene Journal of the American Chemical Society. ,vol. 117, pp. 6465- 6474 ,(1995) , 10.1021/JA00129A008
N.E. Khrushch, N.M. Bravaya, Interaction of zirconocenes with polymethylalumoxane. Kinetics of methane liberation Journal of Molecular Catalysis A-chemical. ,vol. 156, pp. 69- 78 ,(2000) , 10.1016/S1381-1169(99)00396-9
Incoronata Tritto, Laura Boggioni, Maria Carmela Sacchi, Tiziano Dall’Occo, Novel aluminum based cocatalysts for metallocene catalyzed olefin polymerization Journal of Molecular Catalysis A-chemical. ,vol. 204, pp. 305- 314 ,(2003) , 10.1016/S1381-1169(03)00312-1
S. Pasynkiewicz, Alumoxanes: Synthesis, structures, complexes and reactions Polyhedron. ,vol. 9, pp. 429- 453 ,(1990) , 10.1016/S0277-5387(00)80597-5
Maurizio Galimberti, Mara Destro, Ofelia Fusco, Fabrizio Piemontesi, Isabella Camurati, Ethene/Propene Copolymerization from Metallocene-Based Catalytic Systems: Role of the Alumoxane Macromolecules. ,vol. 32, pp. 258- 263 ,(1999) , 10.1021/MA980977C
Brian J. Neely, Jan Wagner, Robert L. Robinson, Khaled A. M. Gasem, Mutual Solubility Measurements of Hydrocarbon–Water Systems Containing Benzene, Toluene, and 3-Methylpentane Journal of Chemical & Engineering Data. ,vol. 53, pp. 165- 174 ,(2008) , 10.1021/JE700449Z
Eleonora Polo, Maurizio Galimberti, Nicoletta Mascellani, Ofelia Fusco, Gabi Müller, Silvana Sostero, Ethene/propene copolymerisations with rac-EBTHIZrR2/alumoxane: σ-ligands effect Journal of Molecular Catalysis A-chemical. ,vol. 160, pp. 229- 236 ,(2000) , 10.1016/S1381-1169(00)00215-6
Alan. Storr, Kenneth. Jones, A. W. Laubengayer, The partial hydrolysis of ethylalane compounds Journal of the American Chemical Society. ,vol. 90, pp. 3173- 3177 ,(1968) , 10.1021/JA01014A036