polyurea

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聚，以含液晶基元的联苯二胺（或联邻甲苯胺）、1，6-己二胺、2，4-甲苯二异氰酸酯为原料进行合成。

So, as the complement for the bimaceral polyurea, the single-polyurea has the wide application foreground in the anti-crash and anti-seepage in the hydropower project.

作为双分聚技术的补充，单分聚在利程中混凝土抗冲磨及防渗等方面具有广泛的应用前景。

Unlike traditional latex or acrylic coatings, polyurea, as a suitable waterproofer even under seawater immersion, is in no way influenced by ponding water, which is very often on existing roofs.

优于丙烯酸防涂料的主要一点是聚的耐积性能，而屋面积在国内非常普遍。