环氧乙烷

Choline chloride is one of B race vitamins and is synthesized by oxirane,hydrochloric acid and trimethylamine.

氯化胆碱由环氧乙烷、盐酸与三甲胺为原料合成，是B族维生素之一，是一种不能替代的饲料添加剂，市场上存在造假掺杂行为，对于各种掺杂行为进行分析识别，并提出鉴别方法

At the same time , through investigating the catalysis of woodiness active carbon , the results show that it also has good activity in the hydration reaction of EO to EG , but that awaits for further studying.

实验中也对木质活性炭进行了考查，发现其对环氧乙烷水合反应也有很好的活性，有待进一步的研究。

Various synthetic method of 1,3-propanediol were introduced and compared, including hydration and hydrogenation of acrylaldehyde, carbonylation of epoxy ethane , microbiological fementation, the process starting from methyl aldehyde, etc.

介绍了1，3-丙二醇的几种制备方法，即丙烯醛水合-氢化法、环氧乙烷羰基化法、微生物发酵法和以甲醛等为原料的方法。

The polyetherurethane was synthesized by one-step method for cosmetic applications by coupling poly(PTMG,Mn=2000) and poly(PEO,Mn=2000) with 4,4'-diphenylmethane diisocyanate.

聚醚型聚氨酯用于化妆品中，由聚四亚甲基醚二醇和聚环氧乙烷与4，4-二苯甲烷二异氰酸酯采用一步法合成，结果表明PEU暴露在60℃酒精/水(80/20，体积比)溶液中放置4周后发生降解，PEU发生变质，其相对分子质量、粘度和机械性能都发生改变。

With corn starch as material, hydroxyethylated starch was prepared by first hydrolysing the starchwith acid, then etherify ing it with epoxyethane.

介绍了一种以玉米淀粉为原料，将淀粉用酸水解后与环氧乙烷进行醚化反应制备羟乙基淀粉的方法。

Hydroxyethyl carboxymethyl cellulose was synthesized by using chloroethanol as etherify ing agent instead of oxirane and chloroacetic acid without isolating intermediate.

探讨了用氯乙醇代替环氧乙烷和一氯醋酸作醚化剂，不用分离中间产物合成HECMC。

Both star copolymer precursors are hydrolyzed in the acidic conditions, then the corresponding recovered star copolymers of EO and glycidol with multi pending hydroxylmethyls are esterified with 2-bromoisobutyryl bromide to produce the ATRP macroinitiators with multi pending bromoisobutyryl groups . Then the latters initiate the polymerization of styrene to form the corresponding amphiphilic three- and four-arm star PEO-g-PS.

在阴离子共聚EPEE单体和环氧乙烷单体的过程中，通过变换引发剂体系中的醇的结构(由原来的二元醇变成多元醇，如三羟甲基丙烷和季戊四醇)，合成了星形结构的共聚物，通过水解反应脱去保护基团后，再与2-溴异丁酰溴反应，得到链的侧端挂有很多2-溴异丁酸酯基的星形大分子引发剂，通过ATRP聚合机理引发苯乙烯聚合得到PEO为主链，PS为侧链的星形一接枝共聚物。

The influence of different modifier contents,n∶n,reaction temperature and reaction time on aliphatic aqueous dispersion of blocked polyisocyanate were discussed while using methyl ethyl ketoxime as blocker and monohydroxyl poly as hydrophilic modifier.

以甲乙酮肟为封闭剂，以单羟基聚环氧乙烷为亲水改性剂，分别考察了不同改性剂用量、n∶n、反应温度、反应时间对脂肪族水分散封闭型多异氰酸酯合成的影响。

The nonionic surfactant is selected from the group consisting of a polymeric ether, a mixture of laurate esters of sorbitol and sorbital anhydrides condensed with ethylene oxide; and mixtures thereof.

所述非离子型表面活性剂选自聚合醚；与环氧乙烷缩合的山梨醇月桂基酯和山梨醇酐的混合物；它们的混合物。

Reactor Construction: Multitube reactor systems for chemical industry ( all technical heat transfer fluids,particularly mkoltensalt 50 years experience) for production of:phthalic anhydride,maleic anhydride,acrolein,methyl methacrylate,methanol,ethylene oxide and other endothermic and exothermic catalytic gasphase processes.

反应器制造部：列管反应器系统，用于化学工业(所有工业用热交换流体，特别是熔盐传热)中生产苯酐，顺酐，丙烯醛，丙烯酸，甲基丙烯酸甲酯，甲醇，环氧乙烷及其他放热与吸热气相催化生产工艺。

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。