Chem. J. Chinese Universities ›› 1996, Vol. 17 ›› Issue (1): 137.
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SUN Wei-Lin, SNEN Zhi-Quan, ZHANG Yi-Feng
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Abstract: The copolymerization of chloromethylthiirane (CMT)with propylene oxide (PO)was investigated by using rare earth coordination catalysts for the first time.It has been discovered that rare earth coordination catalysts,especially Y(P204)3-Al(i-Bu)3-H2Osystem,are effective catalysts for preparing high molecular weight([η]about 1.0 dL/g)CMT-POcopolymer in a high yield(50%).The catalytic efficiency of Y(P204)3-Al(i-Bu)3-H2Osystemreached 6000 g/mol Y. The copolymer structure was also characterized by IR,NMR,GPC.The reactivity ratio CMT(1)and PO(2) were obtained as r1=0.41 and r2=1.37 respective-ly.
Key words: Rare earth coordination catalysts, ChloromethyIthiirane(CMT), Propylene ox-ide(PO), Ring-opening copolymerization, Reactivity ratio determination
TrendMD:
SUN Wei-Lin, SNEN Zhi-Quan, ZHANG Yi-Feng. Studies on the Copolymerization of Chloromethylthiirane with Propylene Oxide by Rare Earth Coordination Catalysts[J]. Chem. J. Chinese Universities, 1996, 17(1): 137.
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http://www.cjcu.jlu.edu.cn/EN/Y1996/V17/I1/137
