Five Schiff bases were prepared from piperonal and diamines by condensation reaction.

合的双-胡椒醛缩二胺类席夫碱化合物。

Cu furaldehyde-ethylene diamine Schiff base complex was synthesized with the yield of 63.

合了一种席夫碱金属络合物——呋喃甲醛二胺铜络合物,收率为63。

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.

为合型热致液晶聚脲，以含液晶基元的联苯二胺（或联邻甲苯胺）、1，6-己二胺、2，4-甲苯二异氰酯为原料进行合。

When the complex of anhydrous zinc acetate with 1,5-naphthalene diamine was formed, the anhydrous zinc acetate changed from a bidentate ligand to a unidentate ligand.

在无锌与1,5-萘二胺形配位络合物的过程中，无锌的结构从双齿型转变单齿型。

3, A chelating agent which forms an easily water-soluble metal chelated compound such as nitrilotriacetate (NTA) or ethylene diamine tetraacetate (EDTA) is incorporated in a detergent composition.

在洗衣粉中掺入螯合剂，例如次氮基三酯（NTA）或者是二胺四酯（EDTA），这些螯合剂易于形溶性的金属螯合物。