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二苯甲烷二异氰酸酯的清洁合成反应过程研究

发表时间:2017-04-14  浏览量:2107  下载量:249
全部作者: 冯磊,徐元媛,张洪起,刘然,张东升,王延吉
作者单位: 河北工业大学化工学院;河北正元化工工程设计有限公司
摘 要: 二苯甲烷二异氰酸酯(methylene diphenyl diisocyanate,MDI)是一种重要的化工原料,主要用于合成聚氨酯材料。考察非光气法合成MDI的清洁工艺过程,即以碳酸二甲酯(dimethyl carbonate,DMC)和二苯甲烷二胺(4,4’-methylenebis(2-ethylbenzenamine),MDA)为原料,经二苯甲烷二氨基甲酸甲酯(methylene diphenyl dimethylcarbamate,MDC)制备MDI的路线。结果表明,在适宜的反应条件下,分别取得了92.23%的MDC收率和89.60%的MDI收率。研究为构建联合制备MDC及ZnO材料,并将ZnO作为催化剂用于MDC进一步分解制备MDI的绿色组装过程提供了可行性。
关 键 词: 催化反应工程;二苯甲烷二氨基甲酸甲酯;二苯甲烷二异氰酸酯;清洁合成
Title: Clean synthesis of methylene diphenyl diisocyanate
Author: FENG Lei, XU Yuanyuan, ZHANG Hongqi, LIU Ran, ZHANG Dongsheng, WANG Yanji
Organization: School of Chemical Engineering and Technology, Hebei University of Technology; Hebei Zhengyuan Chemical Engineering Design Co., Ltd.
Abstract: Methylene diphenyl diisocyanate (MDI) is an important chemical, which plays a key role in the production of rigid polyurethane. In this paper, clean synthesis process of MDI was studied by using dimethyl carbonate (DMC) and 4,4’-methylenebis(2-ethylbenzenamine) (MDA) as raw materials, through thermal decomposition of methylene diphenyl dimethylcarbamate (MDC) to produce MDI. We found that 92.23% yield of MDC and 89.60% yield of MDI were obtained under optimized reaction conditions. Based on the above results, a new catalytic route would be developed for simultaneous synthesis of MDC and ZnO materials, using the obtained ZnO materials as catalyst in the reaction of MDC decomposition to clean synthesis of MDI.
Key words: catalytic reaction engineering; methylene diphenyl dimethylcarbamate; methylene diphenyl diisocyanate; clean synthesis
发表期数: 2017年4月第7期
引用格式: 冯磊,徐元媛,张洪起,等. 二苯甲烷二异氰酸酯的清洁合成反应过程研究[J]. 中国科技论文在线精品论文,2017,10(7):810-817.
 
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