环氧乙烷

Four triatomic heterocyclic compounds, cyclopropane , oxa cyclopropane , ethyleneimine and thiirane were fully optimized utilizing Gaussian94 program package with a density functional theory method B3LYP and an ab initio method MP2 at 6-311 ++G** level, and the theoretical results agrees well with the reference data, which shows that this method is reliable.

使用Gaussian94程序包和密度泛函方法B3LYP以及从头算方法MP2在B3LYP／6-311++G**基组水平上，对4种三元杂环化合物环丙烷、环氧乙烷、环乙亚胺和硫杂环丙烷进行了全优化，其理论数据和文献数据符合得很好，这表明该方法是可靠的。

Four triatomic heterocyclic compounds, cyclopropane, oxacyclopropane, ethyleneimine and thiirane were fully optimized utilizing Gaussian94 program package with a density functional theory method B3LYP and an ab initio method MP2 at 6-311++G** level, and the theoretical results agrees well with the reference data, which shows that this method is reliable.

程学礼 ，赵燕云使用Gaussian94程序包和密度泛函方法B3LYP以及从头算方法MP2在B3LYP/6-311++G**基组水平上，对4种三元杂环化合物环丙烷、环氧乙烷、环乙亚胺和硫杂环丙烷进行了全优化，其理论数据和文献数据符合得很好，这表明该方法是可靠的。

Dioxane is a byproduct of a petrochemical process called ethyoxylation, which involves using ethylene oxide to process other chemicals in order to make them less harsh.

1，4二氧六环的副产品是一个石化过程被称为ethyoxylation ，其中包括利用环氧乙烷，其他化学品，以使它们显得温和。

In the study of by-product dioxane in polymerization reaction of EO,it is found that the effect of solvent is very small.And so do the catalyst BF_3-H_2O complex and catalyst H~+.

计算结果也解释了BF_3-H_2O催化环氧乙烷聚合产物分子量达到某一极限值后不再增加，消耗的单体都生成了二氧六环的原因。

The adducts of ethylene oxide and propylene oxide are possessed of the majority of nonionic deinking agents. They are the adducts of fatty acid and polyol and monoethanolamine.

在非离子脱墨剂中，环氧乙烷和环氧丙烷的加聚产物占了绝大部分，分别为硬脂肪酸、高碳醇和烷酰醇胺型的加成物。

With trimethyl,4-dodecylbenezyl ammonium chloride and 18-crown-6 as pase-transfer catalysts, the azidation of polyepichlorohydrin in poly and H2O were studied. The reaction discipline and mechanism were discussed. The results show that the system with trimethyl, 4-dodecylbenezyl ammonium chloride as phase transfer catalyst and PEG as medium is a safe and effective approach to glycidyl azide polymer preparation, and azidational ratio of PECH can reach 97% above within 15 h.

研究了氯化十二烷基苄基三甲基铵和18-冠－6为相转移催化剂时端羟基聚环氧氯丙烷在聚环氧乙烷和水为介质中的叠氮化反应，探讨了反应规律和反应机理，结果表明：以PECH为介质，十二烷基苄基三甲基氯化铵(TMDA-1)为相转移催化剂的反应体系，可在15h内使PECH叠氮化转化率达到97%以上，无主链断裂等副反应，是一条较为安全快速的制备叠氮粘合剂的方法。

Three series of segmented polyurethanes were synthesized, which are based on 4,4'-methylene-di, N-methyl diethanolamine and hydroxy terminated poly-butadiene, poly or poly.

本文讨论了以聚环氧乙烷、聚环氧丙烷以及聚丁二烯为软段，以4，4'-二异氰酸二苯甲烷和N，N-二羟乙基甲胺为硬段的链段型聚氨酯的合成。

The thermal behaviors of CL-20 mixed with three binders (NC+NC, PET and PBT at 160-200℃ were investigated by NBK LAWA gasometric measuring system. The thermal behaviors were described from the changes of evolved gases and decomposition kinetics. Results show that the apparent activation energies of CL-20 and its mixed systems with, PET and PBT are 176.68, 176.31, 136.12 and 127.0 kJmol^(-1), respectively.

用NBK型&拉瓦&量气测试系统研究了较高温度(160~200℃)下六硝基六氮杂异伍兹烷(CL-20)与硝化棉和硝化甘油双基吸收药、环氧乙烷与四氢呋喃共聚醚、3，3-双叠氮甲基氧杂环丁烷与四氢呋喃共聚物三种黏合剂的全分解过程，从放气规律和动力学的变化阐述了CL-20及其与三种黏合剂混合体系的热行为。

LY series desulfurizers are synthesized by sterically hindered fatty amine, ethylene oxide andpropylene oxide, which is a ring-splitting polymerization reaction at the catalysts.

采用带有空间位阻基团的脂肪胺在催化剂的作用下与环氧丙烷和环氧乙烷开环聚合，合成LY系列脱硫剂。

Axial group, substitution on the aromatic rings of SalenAlX, and co-catalyst all affect catalytic properties of these aluminum complexes.

设计合成了一系列四齿席夫碱铝配合物，它们可以溶解在超临界CO〓／环氧乙烷混合物中，是CO〓和环氧烷烃环加成反应的有效催化剂。

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。