Two series of thermotropic liquid crystalline polyureas were synthesized by the copolymerization of benzidine (or o-tolidine),1,6-hexane diamine and 2,4-toluene diisocyanate.

为成新型热致液晶聚脲，以含液晶基的联胺（或联邻胺）、1，6-己胺、2，4-异氰酸酯为原料进行成。