这些地区也可以使用S-甲基丁烯产品进行处理。
These areas may be treated with the S-methoprene products also.
主要成份是丙烷、丁烷、丁烯等。
主要成份是丙烷、丁烷、丁烯等。
目的：研究丁烯酸内酯的脂质过氧化效应。
Objective: To study the effect of butenolide on lipid peroxidation.
研究并建立丁烯氟虫腈在大米中残留分析方法。
Gas chromatography was used to analyze the residue of butene-fipronil in rice.
氢转移反应越低，丙烯及丁烯等烯烃选择性越高。
Propylene and butylene yields increase with low hydrogen transfer reaction.
因此，通过异丁烷脱氢扩大异丁烯的来源是必要的。
Therefore, it is necessary to extend the resource of isobutene by dehydrogenation of butanes.
聚合物流变特性标准物质主要由聚异丁烯和十六烷组成。
The certified reference material mainly consists of polyisobutylene and hexadecane with good homogeneity and stability.
应用正碳离子聚合的方法合成新型聚异丁烯遥爪预聚物。
The new telechelic prepolymers of polyisobutylene have been synthesized by the carbocationic polymerization.
在适当的大气压力及常温下，丁烷和丁烯均可保持液体状态。
Butanes and butenes can be maintained in the liquid states at ambient temperature under quite moderate pressure.
另外，碱性配体能有效地防止1 -丁烯异构成2 -丁烯。
In addition, alkaline ligands can prevent isomerization of 1 butene to 2 butene effectively.
研究了硫化异丁烯的绿色合成方法，降低了碱性含硫废水排放。
A green synthesis method of sulphide isobutene was investigated to reduce discharge of alkaline sulphide waste water in this paper.
当用30 ~40目催化剂时丁烯- 1异构化在动力学区域。
The isomerization of butene-1 occurred in kinetic region with 30 ~ 40 mesh catalyst.
原料中低异丁烯含量或水相中高叔丁醇含量均对反应过程有不利影响。
Low initial content of I butene or hight butanol content in the aqueous phase were unfavorable to the reaction.
综述了异丁烷与丁烯烷基化反应用固体酸催化剂的研究现状及发展趋势。
This paper elucidates the present situation of research and development of solid acid catalysts for the alkylation of isobutane with butene.
四氯化锡是合成顺丁烯二酸二丁酯的良好催化剂，具有较高的催化活性。
Stannum tetrachloride was an excellent catalyst for synthesizing dibutyl maleate and had higher catalytic activity than other catalysts.
其中催化剂-苯甲酸丁烯酯手性加合物的生成是反应产物的手性决定步骤。
The turnover-limiting step for the asymmetric allylic oxidation is the formation of chiral catalyst-allyl perbenzoate complexes.
温度、反应时间和初始水量对反应的转化率和苯丁烯酮的产率有不同的影响。
The conversion of benzaldehyde and yield of benzylidene acetone were influenced by reaction time, temperature and initial water volume.
在石油化学工业中所用的许多原料是不饱和烃类，如乙烯、丙烯、丁烯和丁二烯。
Many of the raw materials used in the petrochemical industry are unsaturated hydrocarbons, such as ethylene, propylene, butene and butadiene.
由异丁烯二聚物与苯酚合成的辛基酚是制造橡胶工业的硫化促进剂所必需的原料。
The octylphenoi synthesized from dimer of isobutene and phenol is indispensable to the vulcanizing agents in rubber industry.
油田试验结果表明，顺丁烯二酸共聚物是油田地层水中钡锶离子较有效的稳定剂。
The experimental results showed that the copolymer is a pretty good stabilizing agent of barium-strontium ion in oilfield formation water.
树脂在酯化反应中生成的顺丁烯二酸酯的结构受热的影响会产生顺、反异构化反应。
Under the influence of heat, the maleate structure formed in the esterification tends to isomerize into fumarate.
结果表明，塔顶乙烯中只含小于1％的1-丁烯；塔底液相中乙烯含量也小于1％。
The results show that top ethylene contains only 1% butene, and bottom liquid phase contains less than 1% ethylene.
采用水热法合成了新型多孔材料MCM - 22分子筛，并将其用于丁烯齐聚反应。
MCM-22 zeolite was synthesized under stirring by hydrothermal method and used as the catalyst for butene oligomerization.
所以，反应的第一步为速率控制步骤，反应速率只取决于异丁烯的浓度，而与甲醇浓度无关。
Therefore the first step is a process that controls reaction velocity decided by iso-butene concentration , having nothing with methanol concentration.
所以，反应的第一步为速率控制步骤，反应速率只取决于异丁烯的浓度，而与甲醇浓度无关。
Therefore the first step is a process that controls reaction velocity decided by iso-butene concentration , having nothing with methanol concentration.
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