Salt effect on polyaddition of bifunctional cyclic carbonate and diamine

被引：73

作者：

Ochiai, B ^{[1
]}

Inoue, S ^{[1
]}

Endo, T ^{[1
]}

机构：

[1] Yamagata Univ, Fac Engn, Dept Polymer Sci & Engn, Yonezawa, Yamagata 9928510, Japan

来源：

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 2005年 / 43卷 / 24期

关键词：

addition polymerization; additives; carbonate; catalysts; polyurethanes;

D O I：

10.1002/pola.21081

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The effect of various additives was examined for polyaddition of bifunctional cyclic carbonate and diamine giving poly(hydroxyurethane). Lithium chloride and lithium fluoride especially proved to be effective for the acceleration that resulted in giving polymers with higher molecular weights without coloration. The IR spectroscopic analysis of the mixtures of the additives and the carbonate monomer suggested that the acceleration with the lithium salts depends on the activation of the carbonyl group to enhance its electrophilicity. (c) 2005 Wiley Periodicals, Inc.

引用

页码：6282 / 6286

页数：5

共 19 条

[1] Lithium bromide, an inexpensive and efficient catalyst for opening of epoxide rings by amines at room temperature under solvent-free condition [J].