甲醛

Mechanism of the synthesization of aminobenzene sulfonate high performancing water-reducing was proved by virtue of mass experiment and infrared spectral analysis.

在合理酸碱催化作用下，形成初级生成物，然后和对氨基苯磺酸钠苯环的邻位缩合反应，同时氨基上只有一个氢和甲醛反应生成仲胺，最后形成高聚物。

Amino-sulfonic acid single aromatic ring type high range water reducer was synthesized form aminobenzene sulfonic acid, phenol and formaldehyde. The influence of monomers ratio, reaction temperature reaction time, pH value, the concentration of monomer on the performance of AS high range water reducer was analyzed.

以对氨基苯磺酸钠、苯酚和甲醛等为原料合成出了氨基磺酸单环芳烃型高效减水剂，研究了反应单体的摩尔比以及工艺参数对AS高效减水剂对水泥颗粒分散效果的影响。

Amino-sulfonic acid single aromatic ring typehigh range water reducer was synthesized form aminobenzene sulfonic acid,phenol and formaldehyde. The influence of monomers ratio,reaction temperature,reaction time,pH value,the concentration of monomer on the performance of AS high range water reducer was analyzed.

以对氨基苯磺酸钠、苯酚和甲醛等为原料合成出了氨基磺酸单环芳烃型高效减水剂，研究了反应单体的摩尔比以及工艺参数对AS高效减水剂对水泥颗粒分散效果的影响。

An aminobenzene sulfonate-formaldehyde based polymer dispersant with good grinding efficiency was synthesized under alkaline condition using aminobenzene sulfonate, phenol and formaldehyde as main raw materials.

以对氨基苯磺酸、苯酚、甲醛为主要原料，采用碱性合成线路制备了具有助磨效果的氨基磺酸系高效减水剂，系统地研究了单体比例、单体浓度、交联剂用量、反应体系初始pH值、反应时间和反应温度等因素对助剂助磨效果的影响。

His possibly anergic effect may result from discrete structural alterations of the T-cell-epitopes caused by the formalinization process.

这种可能的变应性效应，可能是由于甲醛处理过程引起的 T 细胞抗原决定簇的结构发生改变。

Methods starting from dimethyl succinate and benzaldehyde, mitiglinide calcium was obtained via 7 chain steps including stobble condensation, hydrolization, anhydration, condensation with cis-hexahydroisoindoline, reduction, separation, salt formation.

方法以丁二酸二甲酯和苯甲醛为原料，经stobble缩合、水解、脱水，与顺-全氢异吲哚缩合后经还原、拆分、成盐等7步反应制得糖尿病治疗药物米格列奈钙。

A novel epoxy resin was obtained through the condensation reaction of the azomethine and epichlorohydrin in NaOH solution.

通过对羟基苯甲醛双缩对苯二胺席夫碱与环氧氯丙烷在NaOH液中缩合，合成一种新型环氧树脂。

A compound 2-(3-hydroxyphenyl)[60] fullerene pyrrolidine was synthesized by the 1,3-dipolar cycloaddition reaction of the fullerene(C60) and azomethine ylide (prepared from glycine and 3-hydroxybenzaldehyde). The product was characterized by UV-Vis,1H-NMR ,FT-IR and MS. The reaction conditions affecting the yields of product were investigated and the optimum reaction conditions with product yield 75%(based on consumed C60) were:molar ratio of C60∶3-hydroxybenzaldehyde:glycine 1∶3∶6,reaction temperature 95℃,reaction time 18h.

利用甘氨酸和3-羟基苯甲醛与C60发生1， 3-偶极环加成反应，合成分离得到了2-(3-羟基苯基)[60]富勒烯吡咯烷，用UV-Vis、1H-NMR、FT-IR、MS等测试手段表征了产物的结构，并通过单因素方法，探讨了反应条件对产物产率的影响，得到最佳工艺条件：反应物摩尔比1∶3∶6，温度95 ℃，反应时间18 h，产物的产率可达75%（以消耗的C60计）。

We had to give uP it. We began to synthesize another i ntermedi at6,benzal dehyde.

因此，我们采用了合成另一中间体苯甲醛来替代乙酰丙酮的合成。

The kinetic of hydrolysis of benzal chloride was studied by using a new kind of phase transfer catalyst in this paper.

1前言苯甲醛是一种重要的化工中间体，在医药、香料、农药、染料、树脂等工业中用途甚广。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。