The present invention relates to using a two-step (thermolysis) or one-pot process to prepare aliphatic diisocyanates from aliphatic diamines and diaryl carbonates. Polyisocyanates can also be prepared from polyamines and diaryl carbonates. The present synthetic processes do not apply phosgene or highly toxic reagents and chloro-solvents during the entire procedure.
本发明涉及使用两步(热解)或一锅法过程从脂肪族二胺和二
苯基碳酸酯制备脂肪族二
异氰酸酯。也可以从
多胺和二
苯基碳酸酯制备多
异氰酸酯。本合成过程在整个过程中不使用
光气或高毒性试剂和
氯溶剂。