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Green synthesis of polyureas from CO2 and diamines with a functional ionic liquid as the catalyst

机译：用官能离子液体为催化剂的二氧化碳和二胺的聚氨酯绿色合成

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A series of ionic liquids (P _(4,4,4,6) BF _(4) , P _(4,4,4,6) Triz, as well as the newly prepared anion dual-functionalized amino-triz IL P _(4,4,4,6) ATriz, etc. ) were prepared, and their catalytic performance was tested in the synthesis of polyureas from CO _(2) and diamines. Under the optimized reaction conditions, good to excellent yields of various polyureas were achieved with different diamines over P _(4,4,4,6) ATriz catalyst. It can be found that the catalytic performance is essentially consistent with the basicity of ILs (as determined by TPD method). The solid products were characterized extensively by ~(13) C NMR, FT-IR, XRD, DSC and TGA. From these results, it could be concluded that the solid products based on diamines and CO _(2) have the polyurea structure with the urea linkage and connected by hydrogen bonds, which resulted in their high resistance to solvents and excellent thermal stability.
机译：一系列离子液体（P _（4,4,4,6）BF _（4），P _（4,4,4,6）TRIZ，以及新制备的阴离子双官能化氨基 - Triz IL制备了P _（4,4,4,6）伊斯里埃斯等），并在合成来自CO _（2）和二胺的聚脲的合成中测试它们的催化性能。在优化的反应条件下，用不同的二胺通过P _（4,4,4,4,6）亚毒催化剂的不同二胺来实现各种聚脲的优异产率。可以发现催化性能基本上与ILS的碱度一致（如通过TPD方法测定）。通过〜（13）C NMR，FT-IR，XRD，DSC和TGA广泛地表征固体产物。从这些结果中，可以得出结论，基于二胺和CO_（2）的固体产物具有尿素键和通过氢键连接的聚脲结构，从而导致其高抗溶剂和优异的热稳定性。

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