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Synthesis of Polyurea via the Addition of Carbon Dioxide to a Diamine Catalyzed by Organic and Inorganic Bases
Advanced Synthesis & Catalysis ( IF 5.4 ) Pub Date : 2018-10-30 , DOI: 10.1002/adsc.201801134
Pei-Xuan Wu 1, 2, 3 , Hai-Yang Cheng 1, 3 , Ru-Hui Shi 1, 2, 3 , Shan Jiang 1, 3 , Qi-Fan Wu 1, 2, 3 , Chao Zhang 1, 3 , Masahiko Arai 1, 3 , Feng-Yu Zhao 1, 3
Affiliation  

The synthesis of polyurea via the addition of carbon dioxide (CO2) to a diamine of 4,7,10‐trioxa‐1,13‐tridecanediamine (TOTDDA) was investigated by using organic and inorganic base catalysts. It was found that 1,8‐diazabicyclo[5.4.0]undec‐7‐ene (DBU) was the most active among the catalysts examined. The influence of CO2 pressure, temperature, and reaction time was examined for the DBU‐catalyzed polyurea synthesis. The reaction mixture was analyzed by in situ high‐pressure attenuated total reflectance Fourier‐transform infrared spectroscopy (ATR‐FTIR) under reaction conditions, and possible reaction mechanisms, in which DBU can activate both CO2 and TOTDDA, were proposed. Physicochemical properties of polyurea materials synthesized were examined by several techniques. In addition, the catalytic performance of DBU was further examined for the addition of CO2 to other different diamine compounds.

中文翻译:

有机和无机碱催化二氧化碳加成二胺合成聚脲

通过使用有机和无机碱催化剂,研究了向4,7,10-三氧杂-1,13-十三烷二胺(TOTDDA)的二胺中添加二氧化碳(CO 2)合成聚脲的方法。结果发现,在所研究的催化剂中,1,8-二氮杂双环[5.4.0]十一碳-7-烯(DBU)活性最高。对于DBU催化的聚脲合成,检查了CO 2压力,温度和反应时间的影响。在反应条件下,通过原位高压衰减全反射傅里叶变换红外光谱(ATR-FTIR)分析反应混合物,并分析可能的反应机理,其中DBU可以激活两种CO 2和TOTDDA。通过几种技术检查了合成的聚脲材料的理化性质。另外,进一步检查了DBU在向其他不同的二胺化合物中添加CO 2的催化性能。
更新日期:2018-10-30
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