苯乙烯的

It was found that this polymeric arsine palladium(0) complex is a highly active and stereoselective catalyst for arylation of styrene or acrylic acid.

通过用水合肼对上述聚硅氧烷负载的单齿胂钯配合物进行还原制备了聚硅氧烷负载的单齿胂钯(0)配合物，研究表明它是苯乙烯、丙烯酸芳基化反应的高活性和高立体选择性的催化剂。

Preparation and characterization of graft epoxy resin/silica hybrid aqueous dispersions and their films Epoxy resin/silica hybrid dispersion with solid content 30% was prepared by in-situ dispersing graft epoxy resin with silica sol and water.

接枝环氧树脂水分散液的制备及其表征通过BPO引发甲基丙烯酸和苯乙烯接枝高分子量环氧树脂的反应，合成了亲水性的环氧树脂，并利用索氏抽提的方法对产物进行了分离和表征。

We have taken the advantage of this TICT behavior for the design of new fluoroionophores and synthesized a series of trans-4-(N-arylamino)stilbenes containing a hydrazone substituent, namely 1Hz、2Hz and 3Hz. According to literatures, the hydrazone and methoxyl groups can selectively interact with Cu2+ ion.

欲进一步应用於金属离子感应材料的设计，我们合成了一系列具腙取代基的反式-4-二苯乙烯胺的衍生物1Hz、2Hz、3Hz，因为文献报导腙官能基对铜有极高的选择性。

A hollow metal rod with a heavy rubber tip or tips that is wielded and twirled by a drum major or drum majorette.

金属指挥棒：鼓手挥舞使用的，顶端是厚橡皮的中空的金属棒。合成橡胶是丁二烯(75%)和苯乙烯(25%)的共聚物。

However, common polyacrylate emulsion has some disadvantages such as poor water-resistance, poor film-forming in low temperature, becoming pastiness in high temperature, polluting environment with emulsifier and so on.

由于聚丙烯酸酯乳液具有耐热、耐光和耐老化等优点在涂料工业中得到了广泛的应用，但普通的聚丙烯酸酯乳液还存在耐水性差、低温下不易成膜、高温发粘以及含乳化剂的废液会对环境造成污染等缺点，因此，本文结合无皂乳液聚合和核壳乳液聚合技术，合成了聚丙烯酸丁酯/丙烯酸钠齐聚物，并以此为乳化剂，采用种子半连续法合成了以聚丙烯酸丁酯为核，聚甲基丙烯酸甲酯-苯乙烯为壳的无皂核壳聚丙烯酸酯乳液。

Hrough copolymerization of styrene with few quantity of methacrylic acid, maleic anhydrate or 4-vinyl pyridine respectively and of butyl methacrylate with maleic anhydrate, the functional groups carboxyl, simple anhydride and pyridyl have been introduced respectively to the chain of PS or PBma.

通过苯乙烯与少量的甲基丙烯酸、马来酸酐或4—乙烯基吡啶的共聚及甲基丙烯酸正丁酯与马来酸酐的共聚，可在聚苯乙烯及聚甲基丙烯酸丁酯链上分别引入功能基因羧基、酸酐基和吡啶基对共聚物进行了红外光谱、酸碱滴定、元素分析、玻璃化转变温度、粘度及紫外光谱的测定。

The binary composition contains atactic copolymer of styrene and vinyl cyanide in 50-95 wt% and thermoplastic polyurethane in 5-50 wt%.

本发明涉及一种含聚氨酯的热塑性二元组合物，该组合物含有50～95％的苯乙烯―丙烯腈的无规共聚物和5～50％的热塑性聚氨酯。

By the design and practice of synthesization and token experiments of styrene series polymer, the student's comprehender to the reaction mechanism of macromolecule chemistry, the performance and polydispersity of polymer were intensified.

通过对苯乙烯系列聚合物的合成及表征实验的设计与实践，使学生加深对高分子化学反应机理、高聚物的性能及多分散性的理解，使实验内容与课堂教学内容有机结合，培养学生综合实验能力

Unsaturated polyester crosslinked by styrene has poor toughness. In this paper, diallyl phthalate was used as co-crosslinking agent with styrene for toughening UP.

针对苯乙烯固化的不饱和聚酯韧性差的问题，研究采用了适用于高温固化的邻苯二甲酸二烯丙酯作为不饱和聚酯的共交联剂。

The mechanism of dioxygen oxidation of 4-nitrotoluene-2-sulfonic acid to 4,4'-dinitrostilbene-2,2'-disulfonic acid in alkali solution under mild condition was investigated.

探讨了在温和条件下在碱的水溶液中氧气液相氧化 4-硝基甲苯- 2 -磺酸制取 4，4'-二硝基二苯乙烯- 2 ，2 '-二磺酸的反应机理，发现 4-硝基甲苯- 2 -磺酸在碱作用下发生离子化生成 4-硝基- 2 -磺酸基苄基阴离子，然后被活化的分子氧氧化成 4-硝基- 2 -磺酸基苄基自由基是反应的关键步骤。

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。