Isospecific Polymerization of Styrene with Rare Earth Catalyst

Chinese Journal of Applied Chemistry ›› 1997, Vol. 0 ›› Issue (5): 115-116.

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Isospecific Polymerization of Styrene with Rare Earth Catalyst

Liu Li, Zheng Yulian, Gong Zhi, Jing Xiabin

Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022

Received:1997-01-04 Revised:1997-06-03 Published:1997-10-10 Online:1997-10-10

Abstract

Abstract: A rare earth coordination catalyst system: Nd(P₅₀₇)₃-H₂O-Al(i-Bu)₃ was used for isospecific polymerization of styrene. The polymers were extracted with boiling 2-butanone. ¹³C NMR and DSC data indicate that the extracted polystyrene is highly isotactic. The isospecificity is sensitive to the water added in the system. The conversion and isospecificity reach maximums at H₂O-Al(i-Bu)₃ molar ratio of 0.05～0.08.

Key words: isotactic polystyrene, rare earth coordination catalyst, styrene, stereospecific polymerization

Liu Li, Zheng Yulian, Gong Zhi, Jing Xiabin. Isospecific Polymerization of Styrene with Rare Earth Catalyst[J]. Chinese Journal of Applied Chemistry, 1997, 0(5): 115-116.

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Isospecific Polymerization of Styrene with Rare Earth Catalyst

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