سنتز عامل پخت دی مریل دی ایزوسیانات(DDI) با استفاده از واکنشگر تری فسژن

taghizadeh, mohammadjavad; sotoudeh, mohammadjavad; rostami, arash

Volume 17, Issue 4 (12-2022) مواد پرانرژی 2022, 17(4): 255-262 | Back to browse issues page

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taghizadeh M, sotoudeh M, rostami A. سنتز عامل پخت دی مریل دی ایزوسیانات(DDI) با استفاده از واکنشگر تری فسژن. مواد پرانرژی 2022; 17 (4) :255-262
URL: http://isaem.ir/article-1-1457-en.html

سنتز عامل پخت دی مریل دی ایزوسیانات(DDI) با استفاده از واکنشگر تری فسژن

Mohammadjavad Taghizadeh ^*

, Mohammadjavad Sotoudeh

, Arash Rostami

, mohammadjavadtaghizadeh31@yahoo.com

Abstract: (252 Views)

Aromatic and aliphatic isocyanates are used in the production of polyurethane. Dimeryl diisocyanate (DDI) is a cycloaliphatic diisocyanate with a high molecular weight and a long carbon chain, and this long carbon chain causes the activity of N=C=O groups to decrease in the structure of the molecule. In this research, the synthesis of dimeryl diisocyanate (DDI) using triphosgene reagent has been investigated as a non-biological method.Thus, in the first step, the reaction of acid dimer with chlorination agent at ambient temperature led to the preparation of acyl chloride compound with 98% efficiency, and in the second step, by blowing ammonia gas into this intermediate, the dimeramide product was obtained with 78% efficiency. Then reduction of dimer amide using sodium borohydride reagent created dimer amine product with 52% efficiency. In the final step, using triphosgene reagent and adding it to amine dimer led to the formation of dimeryl diisocyanate (DDI) with 62% efficiency. The products of different stages of the reaction were determined and characterized using IR, ¹HNMR and ¹³CNMR

Keywords: Dimeryl Diisocyanate (DDI), triphosgene, Sodium borohydride

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Type of Study: Research | Subject: سنتز، آناليز، کنترل کيفيت، فرمولاسيون و فرايندهاي توليد مواد پرانرژی (منفجره، پيروتکنيک و پيشرانه)
Published: 2023/12/14