Syndiospecific Polymerization of Styrene Catalyzed Using Polymer Supported CpTiCl3

Abstract

Abstract: CpTiCl₃was supported on two kinds of styrene copolymer with different hydroxyl contents and polymerization behavior of styrene using the polymersupported catalysts was investigated. The supported catalysts show high activity and the percentage of butanoneinsoluble part of the polystyrene obtained is considerably high. The supported catalysts can catalyze styrene polymerization at lower Al/Ti ratio, lower catalyst concentration and higher temperature, the molecular weight of polystyrene is also enhanced. These indicate that polymer carrier can stabilize the active sites. This effect is more obviously observed when CpTiCl₃is supported on polymer with higher hydroxyl content.

Key words: Supported catalyst, CpTiCl₃, Styrene, Syndiospecific polymerization

CLC Number:

O631

TrendMD:

XU Jun-Ting, OUYANG Jian-Ying, FAN Zhi-Qiang, CHEN De-Quan, FENG Lin-Xian. Syndiospecific Polymerization of Styrene Catalyzed Using Polymer Supported CpTiCl₃[J]. Chem. J. Chinese Universities, 1999, 20(2): 327.

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Syndiospecific Polymerization of Styrene Catalyzed Using Polymer Supported CpTiCl₃

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