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化学进展 2002, Vol. 14 Issue (05): 339- 前一篇   后一篇

• 综述与评论 •

封闭异氰酸酯几种反应的动力学

张学同;罗运军*;谭惠民;沈剑波   

  1. 北京理工大学化工与材料学院 北京 100081; 中国科学院长春应用化学研究所 长春 130022
  • 收稿日期:2001-08-01 修回日期:2001-12-01 出版日期:2002-09-24 发布日期:2002-09-24
  • 通讯作者: 罗运军

Kinetics of Reactions of Blocked Isocyanates

Zhang XueTong;Luo Yunjun*;Tan Huimin;Shen Jianbo   

  1. School of Chemical Engineering and Materials Science, Beijing Institute of Technology, Beijing 100081, China; Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
  • Received:2001-08-01 Revised:2001-12-01 Online:2002-09-24 Published:2002-09-24
  • Contact: Luo Yunjun
封闭异氰酸酯广泛地应用于各种单组分涂料、粉末涂料和胶粘剂中。近年来,随着人们对水性聚氨酯的重视和开发,封闭异氰酸酯的重视和使用程度进一步加大。本文对封闭异氰酸酯的相关反应的动力学进行了综述,对两种不同的反应机理及其动力学的影响因素作了介绍。
Blocked isocyanates are widely used in many kinds of one-package coatings, powder coatings and adhesives. They have also been used in water-borne polyurethane. The kinetics and mechanism of the reactions of blocked isocyanates are reviewed and two urethane forming reaction mechanisms by which a blocked isocyanate can react with a nucleophile are provided. Furthermore, effects of isocyanate structure, reaction medium, catalyst and functionality on kinetics of blocked isocyanate are discussed in detail.

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摘要

封闭异氰酸酯几种反应的动力学