Project supported by the National Natural Science Foundation of China (Nos. 50903096 and 50873116) and the Natural Science Fundation of Guangdong Province (No. 9451027501002566).
A series of polyureas were synthesized through the reaction of aniline trimer with toluene-diisocyanate, diphenylmethane-4,4'-diisocyanate, and hexamethylene-l,6-diisocyanate, respectively. The chemical structure of ...