苯乙烯基

Green Star 1862 Ready Mixed Wallcovering Adhesive is a PVA based product, which has been specially, formulated for use with luxury vinyl, textiles, Hessians, polystyrene tiles, polystyrene coving and polystyrene veneers.

Green Star 1862已拌墙纸胶粘剂是基于PVA而开发的产品，，它是特别为与昂贵的乙烯基，纺织品、粗麻布，多苯乙烯瓦片，多苯乙烯和多苯乙烯表面饰板的粘贴而研制的。

The effects of varied impact modifiers including similar styrene elastomer, acrylnitrile-butadiene-styrene copolymerwith high content of polybutylene,ethylene- octene copolymer,butylene-styrene elastomer,styrene-butadiene-styrene elastomer,styrene/ethylene/butadiene/styrene block copolymeron the properties of su- per-toughened HIPS were investigated.

以高抗冲聚苯乙烯为基体树脂，采用双螺杆挤出机研究了不同抗冲击改性剂类苯乙烯弹性体、丙烯腈-丁二烯-苯乙烯共聚物高胶粉、聚烯烃弹性体、丁苯弹性体、苯乙烯-丁二烯-苯乙烯弹性体和苯乙烯-乙烯／丁二烯-苯乙烯共聚物对HIPS的增韧效果。

Results Compound albicanyl caffeate displayed strong antifungal property with MIC 4 μg/ml, while moderate antifungal effects (MIC16 μg/ml)were observed with compounds emodin, resveratrol, 3,4'-difluorostilbene, 2,2'-difluorostilbene and 2,3',5'-trifluorostilbene. Pakyonol, catechin, ampelopsin A, 3,4,4'-trihydroxyl- bibenzyl, 2,4'-difluorostilbene, 4-fluorostilbene,2-methyloxy-4'-fluorostilbene showed lower activity with MIC 32 μ g/ml.

结果化合物albicanyl caffeate对白色念珠菌表现出强的抗真菌活性，MIC为4μg/ml；而化合物大黄素、白藜芦醇、3，4'-二氟二苯乙烯、2，2'-二氟二苯乙烯及2，3'，5'-三氟二苯乙烯显示出中等程度的抗真菌活性，MIC为16μg/ml；双联苄pakyonol、多酚类儿茶素、白藜芦醇二聚体野葡萄素A、3，4，4'-三羟基联苄、2，4'-二氟二苯乙烯、4-氟二苯乙烯及2-甲氧基-4'-氟二苯乙烯显示出较弱的抗真菌活性，MIC为32 μg/ml。

In the three systems, system realizes the crosslinking of PVC bases on the peroxide crosslinking mechanism, the tensile strength of crosslinked PVC has been improved somewhat, the IR spectrum of gel demonstrates that there are characteristic absorption peaks of n-alcohol that belongs to ethanol amine and benzenoid group. From the analysis of gel structure , deduces that the mechanism of crosslinking reaction: under the initiations of peroxide and high temperature, PVC yields macromolecules free radicals, at the same time , styrene"s polymerization and grafting onto PVC takes place, at last the system forms crosslinking structure through coupling between radicals; confirms that triethanol amine can absorb HC1 produced by degradation of PVC, so improves the crosslinking efficiency of peroxide, decreases the HCl"s promotion for PVC"s degradation; deduces that triethanol amine can activate the PVC macromolecules and prolong the free radicals" life-time of PVC macromolecules; the effect to the PVC macromolecule makes styrenes graft reaction easy, and thus improves the crosslinking efficiency.

三种体系中三乙醇胺/过氧化二异丙苯/苯乙烯体系基于过氧化物交联机理实现了聚氯乙烯的交联，聚氯乙烯交联后拉伸强度有一定提高，凝胶红外光谱分析证实了凝胶结构中含有乙醇胺的伯醇基团特征吸收和苯环的特征吸收，由凝胶结构分析，推断出交联反应的机理：聚氯乙烯在过氧化物和热作用下产生大分子自由基，苯乙烯在过氧化物和大分子自由基的作用下发生聚合和接枝反应，最终通过自由基之间的偶合产生交联；证实三乙醇胺可以吸收聚氯乙烯分解产生的HCl，提高了过氧化物的交联效率，消弱了HCl对聚氯乙烯降解的促进作用；推断三乙醇胺可以活化聚氯乙烯大分子并有可能使聚氯乙烯大分子自由基存在的时间得以延长，对聚氯乙烯大分子的作用使苯乙烯的接枝反应易于发生，从而提高了交联效率。

When pumped with 800 nm laser irradiation, 2 {4 [2 (4 dimethylamino phenyl vinyl] phenyl} ethylamino ethanol and 2 {4 [2 (4 diethylamino phenyl vinyl] phenyl} ethylamino ethanol show strong two photon induced blue fluorescence at 436 and 440 nm respectively, while DMANHAS and 4 nitro benzoic acid 2 {4 [2 (4 diethylamino phenyl vinyl] phenyl} ethylamino ethyl ester exhibit no fluorescence.

在800 nm的飞秒脉冲激光激发下，反式-4-(N-羟乙基-N'-乙基氨基)-4'-二苯乙烯和反式-4-(N-羟乙基-N'-乙基氨基)-4'-二苯乙烯均发出较强的蓝紫色上转换荧光，荧光峰分别位于436和440 nm，而DMANHAS和反式-4-[N-(乙氧基羰基-4-硝基苯基)-N'-乙基氨基]-4'-二苯乙烯没有荧光。

Dibutyltin maleate,dioctyltin maleate,N-phenyl maleimide, N-(p-chlorophenyl) maleimide,N-(p-nitrophenyl) maleimide with unsaturated groups were synthesized using dibutyltin oxide,dioctyltin oxide,maleic anhydride, aniline,p-chloroaniline,p-nitroaniline as raw materials,respectively.Then dibutyltin male,ate/styrene bipolymer,dibutyltin maleate/styrene/methyl acrylate terpolymer,dibutyltin maleate/styrene/N-phenyl maleimide terpolymer ,dibutyltin maleate/styrene/N-(p-chlorophenyl) maleimide terpolymer ,dibutyltin maleate/styrene/N-(p-nitrophenyl) maleimide terpolymer ,dioctyltin maleate/styrene biopolymer,dioctyltin maleate/styrene/methyl acrylate terpolymer,dioctyltin maleate/styrene/ N-phenyl maleimide terpolymer,dioctyltin maleate/styrene/ N-(p-ehlorophenyl) maleimide terpolymer[P(DOTM/St/NC1PMI)],dioctyltin maleate/styrene/N-(p-nitrophenyl) maleimide terpolymerwere synthesized using DBTO,DOTO,PMI,N-p-ClPMI,N-p-NOPMI,styrene and methyl acrylate as monomers,respectively.

再以DBTO，DOTO，PMI，N-p-ClPMI，N-p-NOPMI，苯乙烯，丙烯酸甲酯等为单体，合成了马来酸二丁基锡/苯乙烯二元共聚物{P}，马来酸二丁基锡/苯乙烯/丙烯酸甲酯三元共聚物{P}，马来酸二丁基锡/苯乙烯/N-苯基马来酰亚胺三元共聚物{P(DBTM/St/NPMI)}，马来酸二丁基锡/苯乙烯/N-对氯苯基马来酰亚胺三元共聚物{P(DBTM/St/NClPMI)}，马来酸二丁基锡/苯乙烯/N-对硝基苯基马来酰亚胺三元共聚物{P(DBTM/St/NNOPMI)}，马来酸二辛基锡/苯乙烯二元共聚物{P}，马来酸二辛基锡/苯乙烯/丙烯酸甲酯三元共聚物{P}，马来酸二辛基锡/苯乙烯/N-苯基马来酰亚胺三元共聚物{P(DOTM/St/NPMI)}，马来酸二辛基锡/苯乙烯/N-对氯苯基马来酰亚胺三元共聚物{P(DOTM/St/NClPMI)}，马来酸二辛基锡/苯乙烯/N-对硝基苯基马来酰亚胺三元共聚物{P(DOTM/St/NNOPMI)}。

Finally, a comprehensive model was proposed to elucidate the main characteristics and essential time constants of the cis/trans photoisomerization processes among the three 1,4-distyrylbenzene isomers.

最后，我们提出一套完整的动力学模型来描述对-二苯乙烯基苯的顺-反异构化的特徵及其异构化的速率。

This article introduces the naming, properties, usage,chemical structure and sensitization principal of the photoemulsion madeof styryl phridine salts.

本文详细介绍了有机苯乙烯基吡啶盐树脂感光胶的命名、性能特点、用途、化学结构及其感光原理、使用该胶制备网印版的方法及国外应用概况，并对此种感光胶的主要成分的光化反应机理进行了论述。

The electroluminescence devices (ITO/NPB/emitting layer /BCP/Mg : Ag) based on 1, 4-bis (4-N, N-methylamino styryl) naphthalene as emitting layer have been designed by the energy band matching principle.

以自制的&D-π-D&对称型有机绿色发光分子1，4-双（4'-N，N-二甲基氨基苯乙烯基）萘为发光层，在结构为ITO/NPB/BMABN/BCP/Mg： Ag的器件中，研究了空穴阻挡层厚度对器件发光性能的影响。

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。

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。