POLYMERIZATION OF CONIUGATED DIENES WITH MIXED CATALYST OF RARE EARTH AND OTHER TRANSITION METAL IV. Polymerization of Isoprene with(NdCl3+FeCl3)·nphen-HAI(i-Bu)2 System
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Research Article|更新时间:2021-03-19
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POLYMERIZATION OF CONIUGATED DIENES WITH MIXED CATALYST OF RARE EARTH AND OTHER TRANSITION METAL IV. Polymerization of Isoprene with(NdCl3+FeCl3)·nphen-HAI(i-Bu)2 System
JI Xian-zhong, PANG Shu-fen, SUN Tao, SHAN Cheng-ji, YANG Ji-hua. POLYMERIZATION OF CONIUGATED DIENES WITH MIXED CATALYST OF RARE EARTH AND OTHER TRANSITION METAL IV. Polymerization of Isoprene with(NdCl3+FeCl3)·nphen-HAI(i-Bu)2 System. [J]. Acta Polymerica Sinica (2):129-133(1991)
DOI:
JI Xian-zhong, PANG Shu-fen, SUN Tao, SHAN Cheng-ji, YANG Ji-hua. POLYMERIZATION OF CONIUGATED DIENES WITH MIXED CATALYST OF RARE EARTH AND OTHER TRANSITION METAL IV. Polymerization of Isoprene with(NdCl3+FeCl3)·nphen-HAI(i-Bu)2 System. [J]. Acta Polymerica Sinica (2):129-133(1991)DOI:
POLYMERIZATION OF CONIUGATED DIENES WITH MIXED CATALYST OF RARE EARTH AND OTHER TRANSITION METAL IV. Polymerization of Isoprene with(NdCl3+FeCl3)·nphen-HAI(i-Bu)2 System
Polymerization of isoprene in the presence of (NdCl3+FeCl3) n Phen HAl-(i-Bu)2 was studied. The results indicate that the catalytic activity and the microstructure of polymer obtained changed greatly with changing Nd/Fe ratio in the mixed catalyst. When the content of Fe changes in the range of 0-100%
the corresponding cis-1
4 and 3
4 contents of the polyisoprene vary in the range of 94.4-22.1% and 5.6-77.9%
respectively. The catalytic activity and the polymer microstructure are influenced by Al/M ratio
concentration of mono-mer andpolymerization temperature. In the polymerization system
there are two kinds of active centers having higher catalytic activity for isoprene polymerization.