• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Syntheses of regular copolyamides using triphenyl phosphite and pyridine
【24h】

Syntheses of regular copolyamides using triphenyl phosphite and pyridine

机译：使用亚磷酸三苯酯和吡啶合成常规共聚酰胺

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

In this article, a method of preparing of regular copolyamide (co-PA) in a reactor using triphenyl phosphite/pyridine as the activating agent was investigated. In two-step reactions of copolymers prepared from two kinds of dicarboxylic acids and one kind of diamine, oligomer PAs containing amine end groups were first synthesized; then, the second dicarboxylic acid was added to the same reactor to polymerize high molecular weight and regular co-PAs. However, when oligomers having carboxylic acid end groups were first prepared and another kind of diamine was added, the degree of polymerization was low. The reason proposed was that if the oligomer has an amine end group, it would coexist with the activating agent without deactivating; if the end group was the carboxylic acid end group, deactivation would occur. (C) 2000 John Wiley & Sons, Inc. [References: 9]
机译：本文研究了使用亚磷酸三苯酯/吡啶作为活化剂在反应器中制备常规共聚酰胺（co-PA）的方法。在由两种二羧酸和一种二胺制得的共聚物的两步反应中，首先合成了含胺端基的低聚物PA。然后，将第二种二羧酸添加到同一反应器中，以聚合高分子量和常规Co-PA。然而，当首先制备具有羧酸端基的低聚物并添加另一种二胺时，聚合度低。提出的原因是，如果低聚物具有胺端基，它将与活化剂共存而不失活;如果端基是羧酸端基，则会发生失活。 （C）2000 John Wiley＆Sons，Inc. [参考：9]

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号