Four new types of organic siloxane surfactants with quaternary ammonium group have been obtained.
通过多步骤合成了四种含有季铵基的有机硅表面活性剂。
The catalyst also contains urea and quaternary ammonium groups, and long-fluorine hydrophobic group which can reduce the surface tension of water.
该催化剂同时含有双脲基和季铵盐基团以及疏水基的长氟链。
A cationic polymeric flocculant was chosen because its hydrolysate with positive ammonium group enhanced the adsorption of residual COD and improved the flocculation efficiency.
选择阳离子高分子絮凝剂，由于其水解产物带有正电荷铵盐基团，加强了残存COD的吸附，完善了絮凝分离过程。
The rate of reaction is first order with icspect to epoxy group, zero order with respect to methylacrylic acid, and 0.71 order with lespect to quaternary ammonium salt catalyst respectively.
实验证明该反应对环氧基为一级反应，对甲基丙烯酸为零级，对季铵盐是0.71级。
The difference of ammonia, amido, amino group and quaternary ammonium salt, some common wrong expressions on them, and the valence state of phosphorus in some of its oxyacid were pointed out.
指出了氨、氨基、胺基及季铵盐的区别及其常见错误表述，以及磷的几种含氧酸中磷的价态，并着重指出没有“ 次亚磷酸”的叫法。
The preparation and respective characteristics of polysiloxane with polyether, amino, quaternary ammonium, alkyl and so on functional group are summarized.
阐述了带有聚醚基、氨基、季铵基和烷基等功能基聚硅氧烷的制备方法以及它们各自的特性。
The structure, utilization and revamping of phosphoric acid extraction tank in the Ammonium Phosphate Plant, Tongling Chemical Group Corp, are described.
介绍铜化集团公司磷铵厂磷酸萃取槽的结构、使用和技术改造情况。
The results show that the quaternary ammonium cationic group of the modified products can better treat perchlorate in water.
结果表明，改性产物表面的季铵阳离子基团能较好地吸附废水中的高氯酸根；
Quaternary ammonium salt cationic surfactant containing glucose group was synthesized with ethylene glycol glycoside, N, N-dimethyldodecan-1-amine and epoxy chloropropane.
以乙二醇糖苷、高级脂肪胺及环氧氯丙烷为原料合成了含葡萄糖基的季铵盐阳离子表面活性剂。
In addition, the hydrophobic group of quarternary ammonium compounds was found playing a key role in the action of cationic surfactant on the whole cells and its intracellular enzymes.
此外，研究发现在该作用的过程中，阳离子表面活性剂的疏水基团起到了十分关键的作用。
In addition, the hydrophobic group of quarternary ammonium compounds was found playing a key role in the action of cationic surfactant on the whole cells and its intracellular enzymes.
此外，研究发现在该作用的过程中，阳离子表面活性剂的疏水基团起到了十分关键的作用。
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