查询词典 solvent

A synthesis method of 2-(2'-hydroxyl-4'-benzoyloxy-phenyl)-2H-benzotriazole and derivatives thereof is provided, and is characterized in that 2-(2', 4'-dihydroxyphenyl)-5-X-2H-benzotriazole and benzoyl chloride are taken as raw materials for reaction in solvent for 1-8 hours under the temperature of 50-140 DEC C with the mole ratio of 1 to 0.95-1.1, wherein, the amount of the solvent is 2 to 20 times that of the 2-(2', 4'-dihydroxyphenyl)-5-X-2H-benzotriazole and X represents H, F, Cl, Br.

一种2-(2′-羟基-4′-苯甲酸基苯基)-2H-苯并三唑及其衍生物的合成方法，其特征是，以2-(2′，4′-二羟基苯基)-5-X-2H-苯并三唑和苯甲酰氯为原料，在溶剂中进行反应，反应温度50℃～140℃，反应时间1～8小时，反应原料摩尔比2-(2′，4′-二羟基苯基)-5-X-2H-苯并三唑∶苯甲酰氯为1∶0.95～1.1，溶剂用量为2-(2′，4′-二羟基苯基)-5-X-2H-苯并三唑重量的2～20倍，其中X代表H、F、Cl、Br，具有反应条件温和、反应收率高和产物纯度高的特点。

Bagasse high boiling solvent lignin is a polymer prepared by high boiling solvent pulping process.

甘蔗渣高沸醇木质素是高沸醇溶剂法制浆过程中得到的高分子材料。

There is no solvent pollution of the solvent free AKD was. It is able to be used in cap paper of foodstuff. The AKD's production method is consecutive. Liquid AKD wax may solve the skidding of paper. The high speed of reaction with fibre AKD wax is used in the light-weight coated paper.

从1956年到1980年期间，AKD等中性施胶剂仅被用于需要重施胶的特殊纸张中，例如，液体包装纸、少量的需要碱性条件下生产的纸等[1]；由于其具有高不透明度、高白度、使用低成本的沉淀碳酸钙填料的优势，同时，许多高档纸开始从酸性造纸转向碱性造纸，自此，AKD进入了快速发展的时期。

Extracted celery seeds oil by different methods including organic solvent extraction, simultaneous water distillation-solvent extraction and supercritical carbon dioxide fluid extraction (SFE-CO2). Studied the yield, technology and flavor character of celery seeds oil from different methods.

应用有机溶剂提取、同步水蒸气蒸馏萃取和超临界CO2流体萃取(SFE-CO2)方法提取芹菜籽中的活性成分，对不同提取方法制备的芹菜籽油进行了得率、制备工艺、感官评定等方面的研究。

Celery seed essential oils were extracted for tobacco casing by different methods including supercritical carbon dioxide fluid extraction(SFE-CO_2), simultaneous water distillation-solvent extraction and organic solvent extraction.

应用超临界CO2流体萃取(SFE-CO2)、同步水蒸气蒸馏-溶剂萃取和有机溶剂提取方法提取芹菜籽中的香味成分，对不同提取方法制备的芹菜籽精油进行了得率、制备工艺、闻香评价、化学组成和卷烟加香应用效果等方面的对比研究。

Organic solvent repetition crystallization method showed that 60% ethanol was the suitable solvent system. After 5 times repetition crystallization, the purity of product can be up to 98%, and the crystal state was yellow club-shaped, length of which is above 3mm. The productivity of this method is 30.01±1.26%, which is 2 times high than water repetition crystal method. So this method has good exploitation foreground.

有机溶剂重结晶法，选择60%浓度乙醇为适合的二氢杨梅素结晶体系，经过5 次重结晶后，产品的纯度可达98%，晶体为黄色、棒状，长度可达3mm，结晶产率为30.01±1.26%，较水重结晶法高2 倍左右。

Hexane was used as a solvent to extract cottonseed oil from low temperature pressed cottonseed cake, and then methanol was used as a solvent to extract gossypol to prepare cottonseed protein.

以棉仁低温压榨饼为原料，采用己烷浸出脱脂，然后用甲醇浸出脱除棉酚，制备棉籽蛋白粉。

In the solvent in pigment solvent level (including chemical stability and physical stability) is the key to success or failure of confecting innovativeink.

在溶剂里，颜料的耐溶剂程度（包括化学稳定性和物理稳定性）是配制油墨成败的关键。

Both methods are time- and solvent-consuming during the processing. In this study, headspace solid-phase dynamic extraction was applied to exame 13 organochlorine pesticides (γ-HCH、heptachlor、δ-HCH、aldrin、heptachlor epoxide、o,p'-DDE、α-endosulfan、p,p'-DDE、dieldrin、endrin、o,p'-DDT、β-endosulfan、p,p'-DDT) in water and soils. That was a rapid, solvent free and no clean-up procedures technology.

本研究以近年发展之顶空微针动态抽取技术(Headspace solid-phase dynamic extraction， HS-SPDE)进行水及土壤中十三种有机氯农药(γ-HCH、heptachlor、δ-HCH、aldrin、heptachlor epoxide、o，p'-DDE、α-endosulfan、p，p'-DDE、dieldrin、endrin、o，p'-DDT、β-endosulfan、p，p'-DDT)检测方法建立，此技术为一无需溶剂萃取，不需净化之快速检测方法。

The acid behaves as a monomerized solute in non inert solvent and dimerized in inert solvent.

因此 ，从发酵液或工业废水中分离提取有机酸是一重要的研究课题。

I'm not an actor. I'm a professor of paleontology.

我不是演员，我是古生物学教授

Spider Network Web site that is a very image of the name.

网络蜘蛛即Web Spider，是一个非常形象的名字。