PURIFICATION OF STYRENE FOR ANIONIC-POLYMERIZATION

被引：5

作者：

PRIDDY, DB

PIRC, M

机构：

[1] Dow Chemical Company, Designed Thermoplastics Research Laboratory, Midland, Michigan

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1990年 / 40卷 / 1-2期

关键词：

D O I：

10.1002/app.1990.070400104

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Anionic polymerization of styrene in CSTR processes demands monomers which are highly pure. Lithium aluminum hydride (LAH) is a highly reactive material which reacts with the impurities in styrene that interfere with anionic polymerization. The LAH/impurity reaction products are not compatible with anionic polymerization and therefore must be isolated or removed from the styrene before polymerization. This problem is most readily solved by supporting the LAH on ion exchange resin beads such that the impurity reaction products are chemically bound to the support. We have demonstrated the preparation of > 50 mol of polystyrene/mol of n‐butyl lithium by passing the polymeization feed through a column filled with LAH/ion exchange resin. This represents > 10‐fold improvement in yield (based on n‐butyl lithium) over previously described feed purification techniques. Copyright © 1990 John Wiley & Sons, Inc.

引用

页码：41 / 45

页数：5