查询词典 dimethyl ether

Chocolate brown fog corrosion inhibitor could be prepared by using of waste materials with organic amine being the main contents from production of pharmaceutical industry intermediate 1;8diazabicyclo\hendecene7,built with surfactant compound nonyl phenol polyoxyethylene ether and aliphatic alcohol polyoxyethylene ether.

利用制药工业中间体1，8-二氮杂二环[5，4，0]十一烯-7生产中的废料，与复合表面活性剂壬基酚聚氧乙烯醚、脂肪醇聚氧乙烯醚等，复配得到棕褐色缓蚀抑雾剂。

Propanediol phenyl ether was synthesized from phenol and propylene oxide in the presence of a series of solid-based catalysts derived from hydrotalcite-like compounds. The effects of the composition and structure of the catalysts, and the reaction conditions on the synthesis of propanediol phenyl ether were studied.

以不同类水滑石化合物为前驱体制得的复合氧化物作为合成丙二醇苯醚反应的固体碱催化剂，考察了催化剂组成、结构及反应条件对催化合成丙二醇苯醚反应的影响。

Company development and production of ethylene glycol phenyl ether and its acetate, propylene glycol phenyl ether and its acetate, low-foam wetting dispersant, silane coupling agent, solubilizer, emulsifier, such as series of many products, domestic innovative products, quality has been well-known shoulder to shoulder similar foreign products.

公司研制生产的乙二醇苯醚及其醋酸酯、丙二醇苯醚及其醋酸酯、低泡润湿分散剂、硅烷偶联剂、增溶剂、乳化剂等系列的许多产品，为国内独创产品，品质优良，已比肩国外同类知名产品。

Benzyl isopropyl ether also forms CCT complex with oxygen on the benzene ring like phenyl isopropyl ether, but it is easy to oxidize since charge transfer and 〓 transfer may occur at the methylene group adjacent to the benzene ring, which result in the oxidation of the methylene group.(4) The 〓-CCT complex and the initial dark oxidation mechanism of poly were studied.

虽然苄基异丙醚也以苯环与O〓形成CCT复合物，但它却容易发生暗氧化，这是由于与苯基相连的是亚甲基，此时电荷转移发生在苯环与亚甲基之间，引起亚甲基的氧化，而不是异丙基的氧化。

It was confirmed that the 〓-CCT of phenyl isopropyl ether is formed on the benzene ring rather thanon the etheroxy bond. The 〓-CCT complex is not strong enough to induce charge transfer and converts to CTC because the isopropyl group is separated from the benzene ring by oxygen atom. As a result,〓 can not transfer from isopropyl to form radical in cage. Therefore phenyl isopropyl ether is difficult to undergo dark oxidation.

这是由于苯基异丙醚和异丙醚形成O〓-CCT的部位不同，苯基异丙醚的O〓-CCT形成在苯环上，与异丙基相隔一个氧原子，不足以诱发异丙基电荷转移而转化为CTC，也就不能有氢质子转移和笼式自由基的形成，因此难于发生暗氧化反应。

The methods to eliminate the furfural's interference in the determination of cyanide in wastewater, such as silver salt, petroleum ether extraction, two-step petroleum ether extraction, are tested and compared.

目前对糠醛干扰氰化物测定方面的报道不多，大多是只是针对醛类干扰的消除方法，主要有：NaCl -AgNO3-H2 SO4蒸馏法〔3〕、银盐沉淀法〔4 ，5〕、萃取分离〔6〕。

Main propylene glycol ethers and ether products and derivative products, is the nation's largest alcohol ether specialized production bases.

公司主营乙二醇醚和丙二醇醚系列产品及其衍生产品，是国内最大的醇醚专业化生产基地。

As raw chemical materials, produce acetone, hydrogen peroxide, methyl isobutyl ketone, isobutyl ketone, 2-Propanol, diisopropyl ether and isopropyl alcohol ether, isopropyl chloride, isopropyl and fatty acids and fatty acid chloride as isopropyl.

作为化工原料，可生产丙酮、过氧化氢、甲基异丁基酮、二异丁基酮、异丙胺、异丙醚、异丙醇醚、异丙基氯化物，以及脂肪酸异丙酯和氯代脂肪酸异丙酯等。

Surface-active hydrophobic mono- lauryl polyoxyethylene(6)ether acrylatewas pre- pared from lauryl alcohol polyoxyethylene(6)ether and acrylate.

由丙烯酸和月桂醇聚氧乙烯(6)醚聚合得到具有表面活性的疏水单体月桂醇聚氧乙烯(6)醚丙烯酸酯。

We remember that the velocity of light in vacuo, or in other words, in ether, is 186,000 miles per second and that light is an electromagnetic wave spreading through the ether.

我们记得在真空中，或者说在以太中，光的速度是3.0×10^5公里每秒，而光就是在以太中传播的电磁波。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。