Living polymerization of substituted acetylenes by a novel ternary catalyst, MoOCl4-Et2Zn-EtOH

被引：14

作者：

Hayano, S ^{[1
]}

Masuda, T ^{[1
]}

机构：

[1] KYOTO UNIV,DEPT POLYMER CHEM,KYOTO 60601,JAPAN

来源：

MACROMOLECULAR CHEMISTRY AND PHYSICS | 1997年 / 198卷 / 10期

关键词：

D O I：

10.1002/macp.1997.021981005

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A novel molybdenum oxytetrachloride (MoOCl4)-based ternary catalyst, molybdenum oxytetrachloride/diethylzinc/ethanol (MoOCl4-Et2Zn-EtOH), induces the living polymerization of o-(trifluoromethyl)phenylacetylene. A catalyst composition of MoOCl4:Et2Zn:EtOH (mole ratio = 1:1:3)and anisole as polymerization solvent are favorable. The ratio of weight- to number-average molecular weights <(M)over bar (w)>/<(M)over bar (n)>, of the polymer was as small as 1,03, and the initiator efficiency was 8%. Living polymerization was verified by multistage polymerization. The polymerization proceeded in a living fashion in the temperature range from 0 to 30 degrees C. The catalyst yielded polymers with small <(M)over bar (w)>/<(M)over bar (n)> values also from other phenylacetylenes with bulky ortho substituents and 1-chloro-1-octyne.

引用

页码：3041 / 3049

页数：9

共 14 条

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