Chinese Journal of Applied Chemistry ›› 1990, Vol. 0 ›› Issue (3): 85-88.
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Pang Shufen, Xie Demin, Sun Tao, Ji Xianzhong, Shan Chengji, Yang Jihua
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Abstract: A homogeneous rare earth catalyst comprising neodymium octonate, diisobutylaluminumhydride and dichlorodiphenylsilane[Nd(Oct)3 -HAl(i-Bu)2 -φ2SiCl2] for stereospecific polymeri-zation of butadiene was selected to study the action of the third component in the homoge-neous system. Investigation on reactions between Nd(oct)3, HAl(i-Bu)2 and φ2SiCl2 bymeans of NMR(1H and 13C spectra)showed that the tφ2SiCl2,unlike alkyl aluminum chloride,does not react directly with Nd-salt, suepplying the chlorine atom, it reacts first with HAl(i-Bu)2, giving φ2SiH2 and Al(i-Bu)2Cl, and the latter affords the Nd-salt chlorineatom necessary for forming an active catalyst.Some experimental facts found in polymeriza-tion of butadiene using the catalyst were explained by the reaction path mentioned above.
Key words: rare earth catalyst, butadiene polymerization, homogeneous reaction
Pang Shufen, Xie Demin, Sun Tao, Ji Xianzhong, Shan Chengji, Yang Jihua. PRELIMINARY STUDY ON THE REACTION PROCESS OF A HOMOGENEOUS RARE EARTH CATALYST[J]. Chinese Journal of Applied Chemistry, 1990, 0(3): 85-88.
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