乙氧基化制得的烷基酚聚氧乙烯醚产品分子量分布窄，浊度高，外观色泽好，副产物聚乙二醇（PEG）低。
The polyoxyethylene alkyl phenyl ether obtained by calcium oxide catalyst had perfect quality with narrow molecular weight distribution, high cloud point, good appearance and low by - product PEG.
考察了几种生物酶作为脂肪醇乙氧基化催化剂的催化活性。实验发现脂肪酶在乙二醇存在的条件下，能使环氧乙烷开环聚合生成脂肪醇聚氧乙烯醚。
Ethoxylation of n_octanol catalyzed by a few of enzymes were studied and the results showed that only lipase with glycol has a certain catalytic activity.
这些试验表明普洱茶在这方面的功效不差于专门用于治疗高血脂的药物——对氯苯氧异丁酸乙酯，而且没有这种药物的副作用。
These tests showed pu-erh performed at least as well as clofibrate, the most advanced medicine for the purpose, without the drug's side effects.
采用金属钙、脱水液氨、载体纳米二氧化硅及改性剂乙腈与环氧丙烷制备出氨钙体系催化剂。
Calcium ammine catalyst was prepared with metal calcium, dehydrated liquid ammonia as raw materials, nano-silica as a carrier and acetonitrile and propylene epoxide as modifiers.
以硅氧烷、丙烯酸乙酯为原料，经乳液聚合制备了有机硅-丙烯酸酯共聚物。
The silicone-acrylate copolymer was synthesized using siloxane and ethyl acrylate by emulsion polymerization.
在气相色谱上，乙酰乙酸甲酯、乙酰乙酸乙酯、3-氧代戊酸甲酯与醇在无任何催化剂存在下，发生酯交换反应。
Gas chromatography(GC) as a chemical reactor, methyl acetoacetate, ethyl acetoacetate, and methyl(3-oxo) pentanoate can undergo transesterfication with various alcohols without any catalyzers.
以对氨基水杨酸为原料，经酯化、酰化和烃化反应得乙氧苯酯，总收率为87.4%。
Ethopabate is prepared via esterification, acylation and alkylation from p-aminosalicylic acid in87.4% overall yield.
结论乙氧硬化醇组本益比高于鱼肝油酸钠组。
Conclusion Higher cost-effectiveness ratio was found in aethoxysklerol group.
合成了CDMPC手性固定相并制得手性柱，对手性农药乙氧呋草黄和稻丰散对映体具有很好的识别和拆分能力。
The CDMPC CSP was synthesized and the chiral column was prepared which showed favorable enantiomeric recognition and separation potency.
所述钛盐是指钛酸甲酯、钛酸乙酯、钛酸四丁酯、四氯化钛、硫酸氧钛中的任一种；
The said titanate is one of the kinds such as methyl titanate, ethyl titanate, butyl titanate, titanic chloride and titanoxy sulfate.
是取化基，如乙氧基、甲氧基及它们的环氧和烷氧同系物或卤基。
R "is a replaceable function, e. G. Acetoxy, methoxy, their acyloxy and alkoxy homologs or halo."
选择甲基丙烯酸二甲基氨基乙酯来改性丙烯酸树脂，获得带有反应性氨基的丙烯酸树脂，进而制备了改性丙烯酸环氧粉末涂料。
By using dimethylamino ethyl methacrylate to modify acrylate resin, we acquired a new type of acrylate resin with reactive amino group. Further, we engineered a modified acrylic-epoxy powder coating.
我们进行了初步的生物活性试验，筛选出了具有良好抗癌活性的吲哚类化合物2-苯基-3-乙氧羰基-6-氨基吲哚。
We have carried out preliminary biological evaluation and screened out indole derivative ethyl 6-amino-2-phenyl-1H-indole-3-carboxy -late that possess good bioactivity.
前言： 目的：总结采用经支气管镜支气管黏膜下注射硬化剂-1%乙氧硬化醇治疗肺切除术后支气管胸膜瘘的临床经验。
Objective:To summarize our experience on treatment of bronchopleural fistula through submucosal injection of sclerosing agent-1% polidocanol using flexible bronchoscope.
发酵菌丝体乙醇提取物不同溶剂萃取组分对活性氧的清除能力强弱为正丁醇总提物组分、乙酸乙酯组分、乙醇组分、氯仿组分；
The sequence of scavenging of active oxygen isn-butanol, ethyl acetate, ethanol, chloroform; the scavenging of active oxygen is dose-dependent on the content of total flavones.
以对甲苯乙酮和三氟醋酸乙酯为原料，经缩合、环合两步反应得到2型环氧酶抑制剂赛来昔布，总收率为6 7%。
Celecoxib as a cyclooxygenase-2 inhibitor, was synthesized from p-methylacetophenone and ethyl trifluoroacetate by successively condensation and cyclization in 67% overall yield.
西司他丁钠的合成以乙酰乙酸乙酯和1-溴-5-氯戊烷为原料，经活性亚甲基烃化、成肟和水解3步反应得7-氯-2-氧庚酸乙酯；
The synthesis of Cilastatin sodium started from ethyl acetoacetate and 1-bromo-5-chloropentane, through 3 steps to produce ethyl 7-chloro-2-oxoheptanoate;
本发明涉及一种钙离子拮抗剂盐酸巴尼地平中间体（S）-N-苄基-3-乙酰乙氧 基吡咯烷酯的新的制备方法。
The invention relates to a new preparation method of intermediate of (S)-N- benzyl-3-acetyloxethyl pyrrole ester of calcium channel blocker barnidipine hydrochloride.
乙氧氟草醚与氟乐灵二元复配制成的除草剂及其制备方法。
The invention discloses a herbicide prepared by binary compounding of oxyfluorfen and trifluralin and a preparation method thereof.
然后在四甲基氢氧化铵催化下与正硅酸乙酯反应，制得笼状乙烯基倍半硅氧烷；
Then the new cage-like vinyl silsesquioxanes(VS) were synthesized by the reaction of vinyl-tetra-coordinate silicon with tetraethyl orthosilicate in the condition of tetramethyl ammonium hydroxide.
研究了聚乙撑二氧噻吩（PEDOT）膜在水溶液中的阳极降解过程。
The degradation of poly(3,4-ethylenedioxythiophene) (PEDOT) films at an anode in an aqueous solution has been systemically studied.
丁酰乙酸乙酯； 3-氧代己酸乙酯；
以邻甲氧基苯酚与对氯*为原料，经四步反应合成6-（2-甲氧苯氧基）-1，4-二氢-4-氧代-3-喹啉羧酸乙酯。经抗鸡球虫实验证明具有抗球虫效果。
The compound 6-(2-methoxy phenoxy)-1, 4-dihydrogen-4-oxo-3-ethyl quinoline carboxylate is prepared with o-methoxyphenol and p-chloronitrobenzene as materials and through four-step reaction.
以邻甲氧基苯酚与对氯*为原料，经四步反应合成6-（2-甲氧苯氧基）-1，4-二氢-4-氧代-3-喹啉羧酸乙酯。经抗鸡球虫实验证明具有抗球虫效果。
The compound 6-(2-methoxy phenoxy)-1, 4-dihydrogen-4-oxo-3-ethyl quinoline carboxylate is prepared with o-methoxyphenol and p-chloronitrobenzene as materials and through four-step reaction.
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