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.
成新型热致液晶聚脲,以含液晶基元的联苯二
(或联邻甲苯
)、1,6-己二
、2,4-甲苯二
酯
原料进行
成。
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.
成新型热致液晶聚脲,以含液晶基元的联苯二
(或联邻甲苯
)、1,6-己二
、2,4-甲苯二
酯
原料进行
成。
Toluene diisocyanate (TDI) is one of the most useful kinds of isocyanateth that is produced by the method of phosgenation of amine.
甲苯二酯(TDI)是
酯化
物中应用最广泛的品种之一,其工业生产主要采用
光化法。
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