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.

为型热致液晶聚脲，以含液晶基的联苯（或联邻苯）、1，6-己、2，4-苯异氰酸酯为原料进行。