Kinetics of urethane formation from isophorone diisocyanate: The catalyst and solvent effects
Kinetics of urethane formation from isophorone diisocyanate: The catalyst and solvent effects
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DOI：
10.1134/s0023158416040066
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发表时间：
2016-07-01
影响因子：
1.1
通讯作者：
Badamshina, E. R.
中科院分区：
文献类型：
--
作者：
Karpov, S. V.;Lodygina, V. P.;Badamshina, E. R.
用红外光谱法研究了异佛尔酮二异氰酸酯与不同结构的醇（正丙醇、异丙醇、炔丙醇、1，3-二叠氮基-2-丙醇和苯酚）在稀溶液中反应生成氨基甲酸酯的动力学参数与溶剂（甲苯、四氯化碳）和催化剂（二月桂酸二丁基锡、重氮双环辛烷）的关系。测定了异佛尔酮二异氰酸酯的脂肪族和脂环族NCO基团参与的反应的表观速率常数之比，并估计了这些反应的催化效率。确定了异氰酸酯基反应活性差可达40的反应条件。
The dependence of the kinetic parameters of urethane formation in the reaction between isophorone diisocyanate and alcohols of different structure (n-propanol, isopropanol, propargyl alcohol, 1,3-diazidopropan-2-ol, and phenol) in diluted solutions on the natures of solvent (toluene, carbon tetrachloride) and catalyst (dibutyltin dilaurate, diazobicyclooctane) was found using an original IR spectroscopic procedure. The ratio of the apparent rate constants for the reactions involving the aliphatic and cycloaliphatic NCO groups of isophorone diisocyanate was determined, and the efficiency of catalysis in these reactions was estimated. The reaction conditions under which the difference between the reactivities of isocyanate groups can reach 40 were determined.