KINETICS AND MECHANISM OF CARBAMATE REACTION OF 4-HYDROXYBENZYL ALCOHOL WITH PHENYL ISOCYANATE

被引：12
|
作者：
Yang, Pengfei [1 ,2 ]
Li, Tianduo [1 ,2 ]
Li, Junying [3 ]
Zhu, Xuwei [2 ]
Xia, Yongmei [2 ]
机构：
[1] Jiangnan Univ, Sch Chem & Mat Engn, Wuxi 214122, Peoples R China
[2] Shandong Inst Light Ind, Instrumental Anal Ctr, Jinan 250353, Peoples R China
[3] Shandong Inst Light Ind, Sch Chem Engn, Jinan 250353, Peoples R China
来源：
PROGRESS IN REACTION KINETICS AND MECHANISM | 2010年 / 35卷 / 01期
基金：
中国国家自然科学基金;
关键词：
isocyanate; in-situ IR; polyurethane; carbamate reaction; 4-hydroxybenzyl alcohol; induction; DIISOCYANATE;
D O I：
10.3184/146867809X12583840521471
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The reaction of 4-hydroxybenzyl alcohol with phenyl isocyanate in 1,4-dioxane was investigated, using in-situ FT-IR as the main tool. It was found that there was a remarkable induction phase in the reaction. Further, the reaction between isocyanate and the two types of hydroxyl groups in 4-hydroxybenzyl alcohol falls into two phases, with the phenolic hydroxyl being unexpectedly more reactive than the alcoholic hydroxyl. The reaction kinetics were also studied, and the activation energies were calculated to be 46.4 kJ mol(-1), 35.2 kJ mol(-1) and 41.5 kJ mol(-1) for the induction, phenolic and alcoholic phases, respectively.
引用
收藏
页码：93 / 104
页数：12
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