苯乙烯的

The property of SEBS was affected by relative molecular mass, mass ratio of styrene to butadiene, content of 1,2 unit and degree of hydrogenation.

研究了聚合物相对分子质量、苯乙烯与丁二烯的质量比、SBS的PB嵌段中1，2-结构质量分数和氮化度对SEBS性能的影响。

However the chlorohydrin route generates chlorinated by-products, mainly dichloropropane and CaCl_2, which results in equipment erosion and serious environmental pollution, while the co-production route needs large investment and its economic benefit is linked to market of the by-products, namely styrene or tert-butyl alcohol.

氯醇法设备腐蚀和环境污染严重，共氧化法设备投资巨大且受到联产物——苯乙烯或叔丁醇销路的制约。1983年，Taramasso首次报道了钛硅分子筛(TS-1)的合成，为低碳烯烃选择氧化开辟了一条新的途径。

The result shows that both of the two C-C double bond are exist as a trans configuration. The dihedral angle between benzene ring was 24.6°and 37.5°respectively.

发现均二苯乙烯荧光团的两个双键都是以反式结构存在，并且分子中的苯环并非完全共平面，相邻苯环之间的夹角分别为24.6°和37.5°。

Methods: Response surface methodology was applied to study effects of extraction temperature, ethanol concentration, extraction time and solid to liquid ratio on extraction yield of anthraquinone and stilbene glycoside as well as clearance rate of the extracts to DPPH radical.

通过单因素和中心组合试验，对影响何首乌中二苯乙烯苷、蒽醌类化合物含量的提取因素（温度、酒精浓度、时间、料液比）进行了研究，同时将提取物清除DPPH自由基的能力作为考察指标，运用响应面分析法确定清除自由基组分提取的最优化工艺条件。

The ee's of30-93% and yields of 64-96% were achieved in NaClO / 4-PPNO and m-CPBA /NMO oxidant systems by using substituted styrenes and substituted2,2-dimethylchromenes as substrates.

在优化反应条件下，在NaClO／4-PPNO、m-CPBA／NMO两个氧化体系中，对取代苯乙烯系列底物获得了30～70％ee和64～96％的收率；对取代苯并吡喃类化合物，获得了84～93％ee和82～96％的收率。

Two new chiral imidazoles with big conjugate system were synthesized, that is,-1-(-methylbenzyl)-2-benzene-4,5-dibenzene-imidazole and-1-(-methyl benzyI)-2-styrene-4,5-dibenzene-imidazole, whose salifying conditions were also briefly investigated.

设计并合成了两个新的含有手性单元和较大共轭体系的多取代咪唑：-1--2-苯基-4，5-二苯基咪唑和-1--2-苯乙烯基-4，5-二苯基咪唑，并对其成盐反应和条件进行了一些初步研究。

In the one hand, for catalytic double carbonylation of phenyl iodide or catalytic hydroesterification of styrene, the effect of pressure on products ratio reflected the difference in the volume of activation of different reaction routes.

对于碘苯双羰基化反应或苯乙烯氢酯基化反应，由于不同产物反应的活化体积不同，压力对于不同反应速率常数的影响亦不相同，因此压力增大会有利于其中某个反应。

The inhibition effect of 2,2,6,6-tetramethyl-4-hydroxylpiperidine-oxyl and some phenols and quinones on the AIBN initiated radical polymerization of styrene was studied by using dilatomitry method.

用膨胀计法，研究了2，2，6，6-四甲基-4-羟基哌啶氧自由基及一些醌、酚类化合物对偶氮二异丁腈引发的苯乙烯自由基聚合的阻聚效应。结果表明，当 St在80℃聚合时，加入TMHPO·或TMHPO·-BQ，阻聚效果较为显著。

I plant Agent M-80 resin is a-methyl styrene as raw materials response received low-molecular-weight linear homopolymer.

我厂代理的M-80树脂是以a-甲基苯乙烯为原料反应所得到的低分子量线性均聚物。

With a large number 2 - naph-5 thyl amine of styrene effective solution of ammonia to 88% of the yield (recorded 6 points).

带有大量2-naph-5 thyl amine氧化苯乙烯进行有效的氨解达到88 ％的收率（分录6）。

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。