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

在THEIC体系,就链引发言,环氧氯丙烷的大于环氧丙烷、丁基醚环氧乙烷。

Carbon tetrabromide was prepared from acetone and sodium hypobromite by adding tetrabutylammonium bromide.The yield and purity were very satisfactory.

向次酸钠溶液中滴加适量的丙酮,在四丁基催下,产率得到四碳。

Objective:To develop a GC-MS approach for the determination of tripropyltin(TPrT),tributyltin(TBT) and triphenyltin(TPhT) in fish.

建立水产品中三丙基锡、三丁基锡和三苯基锡的气相色谱-谱(GC-MS)分析方法。

With the raising of partial hydrogen pressure, the cracking reaction of tert-butylbenzene is prompted, while the conversion of butylbenzene is restricted.

叔丁基苯的转率随氢分压的提，正丁基苯的转率随氢分压的降低。

A review is mainly on the application of butylrhodamine B, rhodamine 6G and tetrabromofluorescein dyes in extraction spectrophotometric and flotation spectrophotometric analysis.

本文对丁基罗丹明B、罗丹明6G和四荧光素在萃取光度法和浮选光度法中的应用做了综述。

N butyl 2 ethoxy thioacridone was prepared from o chloro benzoic acid and p phenetidine by means of Ullman reaction,cyclization,N alkylation and sulfurization.

以邻氯苯甲酸和对乙氧基苯胺为原料,经过胺的苯基、二芳胺的环、N-烷基、硫代反应合成了N-丁基-2-乙氧基硫代吖啶酮。

The technical advantages and disadvantages of natural rubber liner, chloroprene rubber liner, precuring butyl rubber liner and room temperature self-vulcanization butyl rubber liner are compared.

对比了天然橡胶衬里、氯丁橡胶衬里、预硫丁基橡胶衬里、室温自硫丁基橡胶衬里的技术优缺点。

Generally resistant to animal and vegetable fats, oils, greases, ozone, heat, and strong oxidizing chemicals. Chlorobutyl has lowest permeability of all the synthetic rubbers.

通常适用于动物脂肪或植物油、油、油脂、臭氧、热，以及强氧剂。氯丁基橡胶在所有合成橡胶中的渗透性是最低的。

The main materials we used are including silicone rubber, fluorubber, natural rubber, neoprene rubber, EPDM, butyl rubber, polyurethane, polyethylene, EVA, ABS, PP, and PVC.

使用的原料有硅橡胶、氟橡胶、天然橡胶、氯丁橡胶、三元乙丙橡胶、丁基橡胶、聚氨脂橡胶、聚乙烯、聚丙烯、EVA、ABS、PP、PVC等。

Both volumetric method and gravimetric method can be used for determination of Zn in thiofide ZDBC.The gravimetric method is easy to operate but it spents more analysis time.

容量法和重量法均可用于测定橡胶硫促进剂二丁基二硫代氨基甲酸锌(ZDBC)中的锌含量。

As shown by study the extracting powers of two extraction agents are changed with acidy of developer extracting power N,N-diphenyl glycine is stronger than N-n-butyl glycine for 5 metal ions.

N，N—二苯基甘氨酸对5种金属离子的萃取能力强于N—正丁基甘氨酸。