齐聚

In this paper, oligomerization catalyst was prepared by impregnation and the performance of Fe-Ni catalyst was studied for mixed butene oligomerization.The effect of preparation conditions, reaction conditions and molding methods of powder catalyst was separately studied on the performance of mixed-butene oligomerization.

本文采用浸渍法制备了齐聚催化剂，考察了负载型Fe-Ni催化剂在催化混合丁烯齐聚反应中的性能，研究了催化剂的制备条件、反应条件和成型等对混合丁烯齐聚性能的影响。

With the single-crystal X-ray studies, the nanoscale rigid cavity of the aromatic macrocycle was approved, and nature of the heteromorphism of aromatic macrocyclic oligomer was also explained with the study of two kinds of single crystal with different steric structures.

并利用单晶X光衍射技术研究了三种不同结构的环状齐聚物的单晶结构，第一次通过大环分子与其对应线性齐聚物键长、键角和二面角的变化解释了聚芳醚酮类刚性大环分子环张力产生的原因。

A series of oligoaniline-modified mono- and bis-nuclear iron complexes have been synthesized successfully, and their spectroscopic and electrochemical properties have been studied.

合成了一系列齐聚苯胺修饰的三联吡啶铁配合物，研究了齐聚苯胺链长、不同取代基等对配合物光谱性质和氧化还原性质的影响。

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。

On yellow, instead of the oligmer and conversion with a given yellow, so it should be addicts'choice achromatous of oligmer and confecting conversion to finish.

上光油的发黄，与其所用的齐聚物和活性稀释剂带有一定黄色有关，因此应选用无色的齐聚物和活性稀释剂来配制上光油。

This week, a parade of big names—including David Bonderman of Texas Pacific Group, Steve Schwarzman of Blackstone Group and Nigel Doughty of Doughty Hanson—met in Frankfurt for an industry event modestly calling itself "Super Return". As they gathered, a handful of demonstrators captured the growing public angst.

本周，包括德克萨斯太平洋集团的大卫-伯德曼，黒石集团的斯蒂芬﹒施瓦茨曼和道蒂-汉森的奈杰尔·道蒂在内的大批名人齐聚法兰克福参加一个低调地自称&超级回报&的行业活动，当他们齐聚于此，一些示威者的出现表现了正在增长的公众担忧。

The results show that isobutene oligomerization is fast liquid-solid reaction. Under the temperature of 80 ℃～120 ℃ and pressure of 2.0 MPa, the products of oligomerization are mainly dimers and trimers of isobutene. The yield of trimers is higher than that of dimers and the mass fraction of trimers decreases with reaction temperature increasing. The yield of tetramers is much lower than that of dimmers and trimers. The tetramers are formed by reaction of isooctenes and C8 carbonium ion.

结果表明，异丁烯齐聚反应为快速液固相催化反应，在80 ℃～120 ℃，2.0 MPa的实验条件下，反应产物主要是异丁烯的二聚物和三聚物，且三聚物的收率远高于二聚物，两者的浓度比值随反应温度的升高而下降；少量四聚物的生成主要源于碳八烯烃与碳八正碳离子的反应。

These tridentate chromium complexes afforded moderate to high activity for ethylene oligomerization and polymerization with broad oligomer distributions from C_4 to C_(36) and some complexes got special distributions of oligomers.

在改性甲基铝氧烷的作用下，这些配合物都表现出中等或高的齐聚和聚合活性，并且齐聚产物分布较宽从C_4到C_(36)，一些配合物还得到了特殊分布的齐聚产物(C_6含量很低)。

A series of p hydroxybenzoic acid oligomers were synthesized of p acetoxybenzoic acid (4 ABA).

用对乙酰氧基苯甲酸合成了一系列对羟基苯甲酸的齐聚物，由于这些齐聚物不溶于大部分有机溶剂，因此尝试用傅立叶红外谱半定量地分析齐聚物的聚合度。

A series of p hydroxybenzoic acid oligomers were synthesized of p acetoxybenzoic acid (4 ABA). Since the oligomers are insoluble in most organic solvent, we tried to analyze the degree of polymerization of the oligomers half stoichiometricly by the FT IR method.

用对乙酰氧基苯甲酸合成了一系列对羟基苯甲酸的齐聚物，由于这些齐聚物不溶于大部分有机溶剂，因此尝试用傅立叶红外谱半定量地分析齐聚物的聚合度。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。