However,using THEIC initiator,the reaction rate for epichlorohydrin is faster than that of propylene oxide and 2-butoxyxirane,respectively.

在THEIC体系,就链引发而言,环氧的大于环氧、丁基醚环氧。

This paper contains two parts: (1) Trisubstituted Cyclopropane and FluorinatedAlkynone; (2) Phosphate Ester and Phosphonyl Compounds.

(1)三取代环和含氟炔酮;(2)膦酸酯和膦酰化物。

So some renovations should be made,for example,increasing the solvent ratio of propane deasphalting;using hydrofinishing instead of clay treating;mo...

增加脱沥青的溶比,用加氢补充精制代替白土精制等,此外,在含硫原油生产基础油时,原油也应适当选择。

General approaches involve the nucleophilic cycloalkylation, carbenoids addition of certain amino acid derivatives and derivatization from simple cyclopropane compounds.

制备方法包括简单氨基酸衍生物的亲核环基化、类卡宾加成以及简单环化合物的衍生化合成等。

It is proved effective that deep well aeration biological treat propylene technology is used to treat propylene epoxide saponated sewage.

实践证明,深井曝气生化处理技术处理环氧皂化污水是行之有效的。

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.

采用金属钙、脱水液氨、载体纳米二氧化硅及改腈与环氧制备出氨钙体系催化。

Flame retardant vinyl ester resin using tetrabromo bisphenol A, epichlorohydrin, acrylic acid as raw materials was also synthesized, Its flame retardant property was excellent.

用四溴双酚A、环氧和烯酸为原料合成了阻燃型烯基酯树脂，其阻燃能良好。

Depropanization is a procedure in the separation section of ethylene production and its effect is to separate component C3 from component C4 and C4 above.

脱是烯生产过程中分离工段的一个工艺步骤,其目的是将C_3和C_4以上组分分离。

In this paper, the new chelating resin (PSIM) with a polythioether backbone bearing imidazole group is first synthesized by the reaction between polychloromethylthiirane and imidazole.

通过聚环硫与咪唑进行高分子反应，合成了以聚硫醚为主链、侧链带有咪唑基团的螯合树脂（简称PSIM）。

Moreover, we found that N-heterocyclic carbene (NHC) could served as an efficient and novel catalyst for the reactions of aziridines with silylated nucleophiles or acid anhydrides.

随后，我们发现氮杂环卡宾也可以作为一种有机小分子催化，分别催化各类硅试或酸酐氮杂环化合物的开环。

A divided flow cell is used for electrolysis of NaBr aqueous solution.The anolyte containing Br 2 and catholyte containing NaOH are produced simultaneously and in turn to epoxide HFP to HFPO.

在由离子膜分隔的电解槽中电解溴化钠溶液,所产生的含溴阳极液和碱阴极液,分别是由全氟烯合成全氟环氧的环氧化和皂化。