溶剂

As can be seen in Fig. 5, dipropyl ether will be recovered in the distillate using 1-pentanol, N,N-dimethylformamide and 2-ethoxyethanol as entrainers and butyl propionate is the only entrainer studied that inverts the volatility of the azeotropic mixture.

从图 5可以看出，使用1-戊醇、N，N-二甲基甲酰胺和2-乙氧基乙醇作为共溶剂时二丙醚将在馏分中回收，丙酸丁酯是唯一与共沸混合物挥发性相反的共溶剂。

For the reaction between divinyl sulfone and N-ethylethylene-diamine or N-methylpropane-1, 3-diamine , no cross-linking occurred when the feed ratio of A〓 to BB'〓 was 1/1. When the feed ratio of DV to NDA or NPA is 3/2, no cross-linking occurred too in organic solvents such as DMSO, DMF and NMP, while cross-linking does occur in water.

对于二乙烯基砜与N-乙基乙二胺或N-甲基-1，3-丙二胺的反应，当加料配比为1／1时，反应在水和有机溶剂中不会凝胶；当配比为3／2时，反应在有机溶剂中亦不凝胶，而在水中反应时，会经过一种&假凝胶&过程，并最终发生凝胶。

A Product main business categories: chemical solvents white oil, toluene, xylene, durene, valitin water, acetate, D resin, acetone, butanone, cyclohexanone , anti-white water, dichloromethane, trichloroethane, trichlorethylene, loose water-saving washing network water, open water, wash water, and days that water, rust agent, to water-logging, washing machine water, decontamination water, n-butyl alcohol, isopropyl alcohol, ethanol, industrial alcohol, car-washing water, washing machine water, clean lines of water, cleaning machine water, fire water, paint remover, fungicides, antifreeze water, chloroform, grinding fluid , diluent, release agent, dehydration agent substantial industrial solvents.

主要经营产品 A类：化工溶剂白电油、甲苯、二甲苯、四甲苯、凡立水、乙脂、丁脂、丙酮、丁酮、环己酮、防白水、二氯甲烷、三氯乙烷、三氯乙烯、松节水、洗网水、开油水、洗面水、天那水、除锈剂、去渍水、洗枪水、去污水、正丁醇、异丙醇、乙醇、工业酒精、洗车水、洗机水、抹线水、抹机水、火水、脱漆剂、杀菌剂、防冻水、哥罗仿、研磨液、稀释剂、脱模剂、脱水剂等大量工业溶剂。

Methods:the thin layer scanning method was used to determine the content of ellagic acid.

选用4因素3水平正交表l9(34)，以薄层扫描法测定鞣花酸含量，考察4个因素（溶剂类型，提取时间，提取次数，溶剂用量）、3个水平对鞣花酸提取率的影响。

2The chemical oxidization method was used to prepare emeraldine salt type conductive polyaniline co-doped with hydrochloric acid and dodecylbenzene sulfonic acid (PANI－HCl－DBSA) by interfacial polymerization which employ immiscible interface formed via the water and organic solvent.

2采用化学氧化合成法，以界面聚合方式，利用水与有机溶剂所形成的不相容界面，直接制备以盐酸和十二烷基苯磺酸共掺杂ES型导电性聚苯胺(PANI－HCl－DBSA)，藉由加入适量之DBSA，达到聚苯胺可完全溶解分散於有机溶剂中的目的。

The preparation process includes the steps of: feeding crushed fleeceflower vine and organic solvent and/or water into some container; extracting at 20-40 deg.c for 1-5 hr; centrifugation or filtering to collect supernatant.

生产脂肪酸合成酶抑制剂的方法，包括以下步骤：(1)将粉碎后的首乌藤置于容器中，加入有机溶剂或水或有机溶剂与水的混合物；(2)在20℃-40℃条件下萃取1-5小时；(3)离心或过滤，收集上清液。

The composite fiber includes a fiber that is gelable, and a fiber that is ungelable by the non-aqueous solvent.

该复合纤维包括一种通过非水溶剂可胶凝的纤维，和一种不能通过该非水溶剂胶凝的纤维。

The asymmetric esterification of glycidol catalyzed by lipase was carried out in a nonaqueous medium. The effect of the replacement of water necessary for the function of lipase with water-mimicking solvent on the resolution was investigated.

利用脂肪酶在非水介质中对外消旋环氧丙醇进行不对称酯合成反应，重点研究了强极性有机溶剂作为仿水溶剂完全替代反应体系中的微量&必须&水对酶促拆分反应的影响。

The amphiphiles, 4-8, can not form reverse bilayers in organic solvent, which result in that the molecular interactions unable to meet the need for hydrophile-lypophile balance, so that they crystallize and exhibit no gelling abilities. The mono-chained L-alanine derivatives, 1-3, can self-assemble into bilayer aggregates, through intermolecular hydrogen bonding and homochiral effect in a number of organic liquids, which are juxtaposed and interlocked by van der Waals interaction, and finally gelate the organic liquids.

单链酰基化L-丙胺酸两亲物1-3在一些低极性的有机溶剂可以通过分子间氢键相互作用及同手性聚集作用形成有序的反双分子膜结构，这些有序反双分子膜结构单元依靠vander Waals力相互作用可以平行排列且相互之间进行连结形成长纤维状的聚集体，纤维状聚集体在有机介质中可以进一步相互连结形成三维网状结构，进而胶凝有机溶剂。

Homodyne correlation spectroscopy studies of polymer ultrafineparticles in good and θ solvents revealed that translational diffusioncoefficients D of the polymers changed linearly with scattering wave vector.

高分子超微粒在良溶剂与θ溶剂中的光子相关光谱的研究表明聚合物的平动扩散系数D随散射矢量q线性变化。

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。