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.

为合成新型热致液晶，含液晶基的苯二（邻甲苯）、1，6-己二、2，4-甲苯二异氰酸酯为原料进行合成。