Ring-Opening Polymerization of ε-Caprolactone Catalyzed by Diisopropylamido Bis (methylcyclopentadienyl) Erbium Tetrahydrofuranate Complex
来源期刊：JOURNAL OF RARE EARTHS2000年第2期
论文作者：SHEN Qi MAO Li-sheng ZHANG Zhen-jiang XUE Ming-qiang
Key words：rare earths; ε-caprolactone; ring-opening polymerization; organoerbium amide;
Abstract: Ring-opening polymerization of ε-caprolactone was successfully carried out by diisopropylamido bis(methylcyclopentadienyl) erbium as catalyst. It is found that organoerbium amide is a very active catalyst for ε-caprolactone ring-opening polymerization. The activity increases with the increasing of polymerization temperature. Under certain conditions, the polymerization system shows a living characteristic.
SHEN Qi1，MAO Li-sheng1，ZHANG Zhen-jiang1，XUE Ming-qiang1
(1.Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou 215006, China)
Abstract:Ring-opening polymerization of ε-caprolactone was successfully carried out by diisopropylamido bis(methylcyclopentadienyl) erbium as catalyst. It is found that organoerbium amide is a very active catalyst for ε-caprolactone ring-opening polymerization. The activity increases with the increasing of polymerization temperature. Under certain conditions, the polymerization system shows a living characteristic.
Key words:rare earths; ε-caprolactone; ring-opening polymerization; organoerbium amide;
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