脱水剂

Synthesis of anisonitrile was carried out from anisaldehyde in the laboratory. Anisaldehyde was tranfered into aldoxime in the presence of 95% ethanol,and then gave anisonitrile using toluene as dehydrant.

摘 要：以5mL(0.04mol)大茴香醛为原料，在95%乙醇中制备大茴香醛肟，进一步在相转移催化剂作用下以甲苯作带水剂使大茴香醛肟脱水生成大茴香腈。

Ammonium polyphosphate, is selected as dehydrating agent, and melamineas blister, pentaerythritol as carburetant.

选用聚磷酸铵作脱水成炭催化剂，三聚氰胺作发泡剂，季戊四醇作成炭剂，研究阻燃体系各组分对防火涂料性能的影响，确定了阻燃体系各组分的最佳用量。

The fourth part of this work was to enhance the RIE resistance of the photoresist by substituting the cycloolefin structure for the acrylate structure.

第四部份延伸第三部份之脱水交联反应机制於环烯类负型树脂，并验证环烯类光阻剂具有较压克力光阻剂更优秀的抗蚀刻能力。

The method is characterized in that: mixture of macromolecular dihydric alcohol and a dihydroxybutyl-terminated polydimethylsiloxane is dehydrated, added with diisocyanate for reaction, then added with a bis propionic acid, a dihydric alcohol chain extender and a catalyst - dibutyl tin laurate, and is diluted by acrylic ester; temperature reduction and emulsion are performed on the mixture after reaction; chain extension reaction is performed in water by a multi-amine chain extender, and siloxane modified polyurethane dispersoid which contains acrylic ester monomer is prepared; and an initiator - potassium persulphate is added into the siloxane modified polyurethane dispersoid for emulsion polymerization.

特征是先将大分子二元醇与二端羟丁基聚二甲基硅氧烷的混合液脱水后加入二异氰酸酯，反应后加入二羟甲基丙酸、二元醇扩链剂和催化剂二月桂酸二丁基锡，并用丙烯酸酯进行稀释，反应后降温乳化，用多元胺扩链剂在水中进行扩链反应，得到含有丙烯酸酯单体的硅氧烷改性聚氨酯分散体，然后再通过加入引发剂过硫酸钾进行乳液聚合。

Experimental results have shown that if pentaerythritol or starch are used as coking reagent,and if the proportion of deaquation catalyst to coking reagent to bubbling reagent is 5∶1 5∶3 5 and the ratio of blending stock to basic paint material is 7∶3,the fire retardant paints will relatively achieve its best fire resistant properties.

实验发现，采用季戊四醇、淀粉作为成炭剂，脱水成炭催化剂∶成炭剂∶发泡剂＝ 5∶1.5∶3.5、填料∶漆基料重＝ 7∶3时，涂料的防火性能较佳。

The results indicate that the pillaring process and crystal growing of anatase can be more easily realized by increasing the acid-base ratio of pillaring agents, raising the pillaring temperature and adding proper quantities of alkali. The calcination of Ti-pillared precursor brings the growth of TiO2 grain, at the same time the layer distance is declined. In order to obtain ideal products, the right pillaring conditions are: the acid-base ratio of pillaring agents of 13, pillaring temperature of 65 ℃ and the volume of alkali (2 mol/L) in pillaring liquid of 6 mL.

结果表明：在一定范围内增大柱撑剂酸碱比、提高柱撑温度以及加入适量碱，有利于插层复合反应的进行和锐钛晶型的生长；柱撑前驱物焙烧后TiO2晶粒长大，同时焙烧引起的脱水导致膨润土层间距的下降；为获得较理想的产物，合适的柱化条件为：柱撑剂酸碱比 n n (HNO3)为13、柱撑温度65 ℃和柱撑液加碱量为(2 mol/L NaOH) 6 mL。

Results show that protons are liberated by dehydration or dehydroxylation after calcination at 500℃. These protons disrupt the silicon-oxygen-aluminium bridges where there are Al substitutions in the tetrahedral sheet of the montmorillonite. Some of silicon-oxygen and aluminum-oxygen tetrahedral invert to react with the pillaring agents and yield covalent bonds which firmly fix the pillars to the host clay. The Al-MMT are thermally and hydrothermally stable up to 700℃.

经过500℃高温焙烧后，交联剂经脱水或脱羟基释放出质子攻击蒙脱土四面体层中Si-O-Al四键，硅氧四面体和铝氧四面体发生翻转，与交联剂发生反应生成共价键，形成稳定的层柱黏土材料，在700℃高温下，Al-MMT材料不仅具有较好的热稳定性，而且具有较好的水热稳定性。

The technique comprises the steps as follows: using the waste filtered mud of the sugar-refinery as the material to generate gas which is dehydrated till the water content is less than and equal to 30 percent and through distribution (clay used for of 70.00 to 85.0 percent, dehydrated filtered mud of the sugar-refinery of 15.0 to 30.0 percent, intensifier carboxymethyl cellulose or propyloic fibrin is 0.1 percent of the total dosage of the below material), performaing, moulding with high temperature (800 to 1200 DEG C, 20 to 180min) and acquiring the multi-hole porcelain granule with 20 to 30 percent of poriness, 10 to 20 percent of water absorbing capacity and 1.5 to 7.5/MPa of cylinder pressing intensity.

一种糖厂滤泥生产多孔陶粒技术，是用糖厂废弃物滤泥为发气原料，经脱水至含水≤30％，经配料(陶瓷用黏土70.0～85.0％，糖厂脱水滤泥15.0～30.0％，增强剂羧甲基纤维素或羧乙基纤维素为上述原料总量的0.1％)、制坯、高温(800~1200℃，20～180min)成型，得到孔隙率20~30％、吸水率10~20％、筒压强度1.5~7.5/MPa的多孔陶粒。

Their technology and process is basically similar to that used ethylene, the raw material for the oxygen in the silver catalyst, caused by methane or nitrogen stabilizer, the existence of inhibitors of chloride, ethylene oxide directly generate ethylene oxide and ethylene B N and further to certain substances in water than in the tubular reactor for generating hydration ethylene glycol, ethylene glycol solution through evaporation to mention thick, dehydration, fractionation be ethylene glycol and other by-products.

它们的工艺技术和工艺流程基本上相似，即采用乙烯、氧气为原料，在银催化剂、甲烷或氮气致稳剂、氯化物抑制剂存在下，乙烯直接氧化生成环氧乙烷，环氧乙烷进一步与水以一定物质的量比在管式反应器内进行水合反应生成乙二醇，乙二醇溶液经蒸发提浓、脱水、分馏得到乙二醇及其他副产品。

To investigate the relationship between the tolerance to dehydration and superoxide dismutases in Pachira macrocarpa, fresh mature seeds were pretreated with a 12 h DDTC and subjected to 3~20 h desiccation silica gel at 25℃. The results showed that 20 mmolL^(-1) diethyldithiocarbamate treatment inhibited efficiently SOD and SOD activity in seeds and reduced tolerance of seeds to water deficit, which was evidenced with increases in electrical conductivities and malondialchehy of the seeds, and a rapid decrease of the seed vigor during desiccation.

以探讨马拉巴栗种子脱水耐性与其超氧化物歧化酶之间的关联为目的，选用新鲜的成熟马拉巴栗种子，用二乙基二硫代氨基甲酸钠（DDTC， SOD抑制剂）进行12h预处理后，在25℃下进行3~20h的硅胶快速脱水处理，观察种子的萌发率和生理指标的变化。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。