苯乙二醇

The reaction of hydrolytic depolymerization was used for the generation of useful chemicals of ethylene glycol and terephthalic acid.

研究中设计及评估了三种水解废PET的化学程序，这些程序可将废PET转化为对苯二甲酸和乙二醇化学品，可做重新生产PET或其他聚酯原料之用。

The interfacial surface and properties of glass fiber reinforced PET was studied by using Fouier transform infrared spectrometer scaning electron microscopy, dynamic viscoelastometer differential scattering calorimetry and mechanical measuring methods, the effects of coupling agent on the property of PET and its interfacial adhesion were examined.

用红外光谱分析、扫描电镜、粘弹谱仪、差示扫描量热法及力学性能测试方法，考察了玻璃纤维增强聚对苯二甲酸乙二醇酯的界面情况及力学性能等，并分析了玻璃纤维表面处理剂对PET树脂及其界面粘结性的影响。

A novel method to prepare polyrotaxane in solution by α-cyclodextrins and dumbbell-like poly derivative with reversible acylhydrazone bond and big end stopper (2',4-dinitrophenyl) is described.

合成了具有可逆酰腙键的2，4-二硝基苯甲醛封端的哑铃型聚乙二醇衍生物。

Tergitol or PEG (0.5 g) was added to 10 mL of a 20% solution of alkyl halide in phenylacetonitrile, and then this solution was added to 10 mL of 60% aqueous potassium hydroxide.

Tergitol或聚乙二醇（ 0.5 g ）项增加了10毫升的 20 ％的溶液中苯乙腈烷基卤化物，和那么这个解决办法是增加了10毫升的60 ％水氢氧化钾。

Good yield of the pure monomer bis(2-hydroxyethylene terephthalate) was obtained.

良好的收益率的纯单体二（ 2 - hydroxyethylene对苯二甲酸乙二醇酯）获得。

The acetalization and ketalization of various aldehydes and ketones with glycols using FeCl3 as catalyst were studied. The effects of reaction time, mole ratio of reactants and amount of catalyst on the yield of acetals were investigated.

研究了在FeCl3催化下，乙二醇与环己酮、丁酮、丙酮、丙醛、丁醛、异丁醛、戊醛、异戊醛、正辛醛、二苯甲酮、苯甲醛等十余种醛的缩合反应。

For example, there is only local cooperative organization between polymer segments of atactic poly in the middle-sized solvent poly with molecular weight 200g/mol (PEG200). But for the stereo-regular isotactic polystyrene, pronounced content of 3〓 helix can be found in its middle-sized solvents.

例如，无规聚甲基丙烯酸甲酯在聚乙二醇（分子量为400）中分子溶剂中表现为链段的局部协同组织，而等规聚苯乙烯在邻苯二甲酸二辛酯、氯代十四烷等中分子溶剂中则出现相当含量的3〓螺旋构象。

We studied the effect of water on the palladium acetate-catalyzed coupling reaction of aryl boronic acid with aryl bromide or acyl chloride in ionic liquid or PEG, and found that water had a remarkable rate accelerating effect on the Suzuki reaction and Suzuki-Type reaction when other reaction conditions were uniform.

研究了水对离子液体或聚乙二醇中Pd2催化的卤代苯或苯甲酰氯与苯硼酸的Suzuki和Suzuki-Type偶联反应收率的影响。

In order to enhance the compatibility of ABS/PP/CaCO3 composites, the effects of reactive blends of the composites were studied by using Haake rheometer. The effects of various assistant cross-linkingers, such as castor oil, triallyl isocyanurate, turpentine (JS-1) and glycol dimethacrylate, and the used amount of cross-linkinger-dicumyl peroxide on the torques of the melting composites were investigated.

为提高ABS/PP/CaCO3复合材料相容性，采用转矩流变仪观察了ABS/PP/CaCO3三元复合物反应性共混后的扭矩，考察了不同的助交联剂蓖麻油、异氰脲酸三烯丙酯、松香酯(JS-1)、二甲基丙烯酸乙二醇酯以及交联剂过氧化二异丙苯的用量对共混物的影响。

The synthetic condition s of benzaldehyde and glycol acetals by 732#strong acidic ion exchange resin are studied.

研究了苯甲醛与乙二醇在732#强酸性阳离子交换树脂催化下的合成条件，得到了缩醛化反应的最佳合成条件：醛/醇摩尔比为1∶1。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。