ISSN:
0887-624X
Keywords:
MgCl2-supported dichlorobis(β-diketonato)titanium catalysts
;
catalyst activation by ordinary trialkylaluminums
;
propene polymerization
;
effect of Lewis bases on catalyst isospecificity
;
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Several kinds of dichlorobis(β-diketonato)titanium complexes, i.e., Ti(ace-tylacetonato)2Cl2, Ti(1-benzoylacetonato)2Cl2, Ti(2,2,6,6-tetramethyl-3,5-heptanedionato)2Cl2 and Ti(4,4,4-trifluoro-1-phenyl-1,3-butanedionato)2Cl2, were synthesized and the corresponding MgCl2-supported catalysts were prepared by impregnation method. The test of them for propene polymerization revealed that those MgCl2-supported catalysts could be activated not only by methylaluminoxane (MAO) but also by ordinary alkylaluminums as well. The effect of typical Lewis bases on the catalyst performance was investigated in some detail, which indicated that organic silanes are most effective for the improvement of isospecificity of those catalysts. © 1998 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 36: 129-135, 1998
Additional Material:
2 Ill.
Type of Medium:
Electronic Resource
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