丙烷

Glycidyl benzoate,glycidyl propionate,glycidyl acetate were obtained respectly through a phase-transfer catalytic methodology using sodium benzoate, sodium propionate, sodium acetate and epichlorohydrin as raw materials, and pure products were obtained though vaccum distillation.β-cyclodextrin and glycidyl benzoate, glycidyl propionate, glycidyl acetate, reacted in organic solvent and goal product were

先以苯甲酸钠、乙酸钠、丙酸钠和环氧氯丙烷为原料在相转移催化剂的作用下分别合成了苯甲酸缩水甘油酯、乙酸缩水甘油酯和丙酸缩水酯，经过减压蒸馏，得到相应的纯品；β-环糊精和苯甲酸缩水甘油酯、乙酸缩水甘油酯、丙酸缩水甘油酯在有机溶剂中反应，经过硅胶色谱柱分离，得到了相应的产品，产品经过TLC、IR、1H NMR、MS表征，并研究了温度、反应时间、催化剂等几个因素对反应工艺的影响，结果表明温度和催化剂对反应的快慢有较大影响。

Polyurethane-acrylics hybrid latexes were prepared using isophorone diisocyanate, dimethylol propanoic acid and polypropylene oxides of different molecular weights as main materials for PU component, and butyl acrylate, methyl methacrylate and a crosslinker, trihydroxymethyl propanetriacrylate as main acrylic monomers. Hydroxyethyl acrylate was used as the coupling agent between PU and AC.

以异佛尔酮二异氰酸酯、二羟甲基丙酸和聚丙醚二醇等为聚氨酯原料，丙烯酸丁酯、甲基丙烯酸甲酯、三羟甲基丙烷三丙烯酸酯为丙烯酸酯类单体，丙烯酸羟乙酯为聚氨酯和聚丙烯酸酯间的偶联剂合成了丙烯酸酯改性水性聚氨酯乳液。

It was anti-oxidant and stable that the purpose removed the lubricating oil ideal component of Central Africa, improved oil, improve glueing the warm performance and colour of oil, reduce acid value and incomplete charcoal value.

从蒸馏来的减压二，三，四线和丙烷脱沥青来的残渣油料，首先经过酚精炼，然后经脱蜡，补充精制，调合生产成品润油油。

This includes gasoline, propane, paint thinners, mineral oils, paraffin wax , baby oil, Vaseline?

它包括汽油、丙烷、漆面稀释剂、矿物油、石蜡、凡士林和无色唇膏。

Starch nanoparticles have been prepared with W/O starch microemulsion as microreader and epichlorohydrin as cross-linking agent. The factors affecting the preparation of SN have been investigated via the characterization of TEM. The results show that the size and size distribution of SN are mainly controlled by the interfacial strength of microreactor, and the interfacial strength of microreactor is chiefly influenced by W value (the molar ratio of water / surfactant) and concentration of starch. The SN with controllable size and size distribution can be obtained by adjusting preparation parameters.

利用所得到的W／O型淀粉微乳液作为微型反应器，以环氧氯丙烷为交联剂制备出淀粉纳米粒，并借助透射电镜的表征研究了各制备因素的影响，研究结果表明：淀粉纳米粒的粒径及粒度分布主要受微型反应器的界面强度控制，而影响界面强度的因素主要是R值(即水与表面活性剂的摩尔比值)及淀粉液浓度。

Hydrolysate of epichlorohydrin in alkali aqueous solution was studied, mole ratio of epichlorohydrin to water, temperature and time were investigated in detail, the mechanism was discussed in this paper.

研究了环氧氯丙烷在碱性水溶液中的水解产物，考察了原料摩尔配比、反应温度和反应时间等对水解率的影响，讨论了其水解机理。

Its mechanism causing hyperglycmia is the resolution of hepatic glycogen and the increase of glyconeogenesis.

其作用机制初步认为可能是环氧氯丙烷通过兴奋β—受体，使肝糖元分解和糖异生反应增强所致。

Its mechanism causing hyperglycemia is the resolution of hepatic glycogen and the increase of glyconeogenesis.

其作用机制初步认为可能是环氧氯丙烷通过兴奋β—受体，使肝糖元分解和糖异生反应增强所致。

The catalytic activity of selective oxidation from propane to acrylic acid was tested.

丙烷选择氧化制丙烯酸是低碳烃优化利用的一个重要的反应[1]。

5 G Benzaldehyde was added dropwise at 0 °C to a Grignard reagent from 4 g Mg and 20.6 g 2 Bromopropane, and the mixture stirred 0.5 h at room temperature, yield, 20.5 g isopropylphenylcarbinol.

在 0°C时，将 1 6.5g苯甲醛滴加到由 4g Mg和 2 0 。6g2 -溴丙烷制得的 Grignard试剂中，在室温下搅拌 0 。5h，得到 2 0 。5g异丙基苯甲醇。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷