查询词典 tri-ester

The nautre of ester bond and sedimentary medium condition control the distribution pattern of organic acid ester in strong reductional environment and water-washed oxidized crude oils. The former features higher contents both of 9, 11-Octadecadienoic acid, methyl ester and Hexadecanoic acid, showing the non-reversible hydrolysis reaction of ester bond in condition of basicity; the later features higher contents of Hexadecanoic acid and Octadeanoic acid, and lower contents of nonsaturated and side-chain acid ester, indicating the reversible hydrolysis reaction of ester bond in acid condition.

酯键的化学性质和沉积环境中介质条件，决定了强还原咸水盐湖相和淡水湖沼相经水洗氧化次生变化的原油有机酸酯的分布特征，前者9，11-十八二烯酸甲酯与正十六烷酸为主，反映酯键在碱性条件的不可逆水解过程，后者以正十六烷酸和正十八烷酸为主，烯酸和支链酸很少，反映酯键的酸性条件的可逆性水解，烯酸经氧化向正十八烷酸，正十六烷酸转化。

For example, an objective polyester can be produced in a method of producing an ester comprising, a first step wherein a diol is reacted with an ester produced beforehand from a dibasic acid and a monofunctional alcohol, or an ester produced beforehand from a monofunctional alcohol and diol, a second step wherein unreacted ester is separated from the product produced in the first step to obtain another ester, and a third step wherein unreacted ester separated in the second step is recycled to the first step, 0.05-5 millimoles of the catalyst relative to one mole of acid being used in said first step.

例如，可以应用制备酯的方法制备目的聚酯，包括，第一步，使二醇与产生的酯反应，该酯由二元酸和单官能团醇预先制得，或由单官能团醇和二醇预先制得；第二步，将未反应的酯与第一步所制得的产物分离，得到另一种酯；第三步，将第二步中分离出的未反应的酯循环回到第一步中，在第一步中相对于1摩尔酸来说，应用了0.05-5毫摩尔所述的催化剂。

Except for measuring the yields and comparing the experimental conditions, the article also confirmed the accurate composition of product biodiesel, and results indicated that the biodiesel made by oil and fat mainly consists of Oleicacid methyl ester, Linoleic acid methyl ester, Hexadecanoic acid methyl ester, Octadecanoic acid methyl ester and some other acid methyl ester.

结果表明油脂制的生物柴油主要是油酸甲酯、棕榈酸甲酯、亚油酸甲酯、硬脂酸甲酯和癸酸甲酯的混合脂肪酸甲酯。

Our study show that 9, 11-Octadecadienoic acid, methyl ester is the highest content of organic acid ester components in non-hydrocarbon fraction, higher content of 6-Octadecenoic acid, methyl ester reflects mainly terristrial source input, higher content of pentadecane acid, 14-methyl, methyl ester or Heptadeeanoic acid, 16-methyl, methyl ester shows mainly aquatic source input.

原油和岩石抽提物非烃中有机酸酯类化合物的有机地球化学研究报道很少，系统研究发现非烃有机酸酯中9，11-十八二烯酸甲酯含量最高，而次高峰的丰度可用作生源判识，陆源母质输入多的样品次高峰为6-十八单烯酸甲酯，水生母质供给多者次高峰为14-甲基十五烷酸甲酯或16-甲基十七烷酸甲酯。

Fine chemicals to add auxiliary Series: lubricating oil pour point depressant, calcium zinc magnesium methacrylate, methyl acrylic acid lauryl ester, tetradecane methacrylate ester, methacrylic acid octadecyl ester, a acid ethylene glycol, diethylene glycol methacrylic acid ester, glycidyl methacrylate, the second reduction of three ethylene glycol dimethyl acrylate, acrylic acid lauryl ester, tetradecyl acrylate, octadecyl acrylate, acrylic acid ethylene glycol, diethylene glycol acrylate esters, glycidyl, two shrink three acrylate such as ethylene glycol.

精细化工添加助剂系列：润滑油降凝剂，甲基丙烯酸钙锌镁，甲基丙烯酸月桂酯，甲基丙烯酸十四烷酯，甲基丙烯酸十八烷基酯，甲基丙烯酸乙二醇，甲基丙烯酸二乙二醇酯，甲基丙烯酸缩水甘油酯，二缩三乙二醇二甲基丙烯酸酯，丙烯酸月桂酯，丙烯酸十四酯，丙烯酸十八酯，丙烯酸乙二醇，丙烯酸二乙二醇酯，丙烯酸缩水甘油酯，二缩三乙二醇丙烯酸酯等。

The result will provide afundamental basis for industrial design.Firstly,based on the assumptions that the reaction generating mono-ester was controlled by the solution rate of pentaerythritol,that di-ester conversed to tri-ester rapidly and that all the reverse reactions and side reactions were omitted,the equations of reaction kinetics were obtained.

具体工作如下：(1)基于生成一酯的反应受季戊四醇溶解速率控制、二酯迅速转化为三酯和忽略所有逆反应及其它副反应的假设基础上，建立了酯交换反应的反应动力学方程，获得了不同温度下的动力学常数和速率常数的指前因子及活化能。

Water-based lubrication additives contain single-ester, double-ester and tri-ester.

3水基润滑添加剂中含有单酯、双酯和三酯。

Means to solve the problem of insufficient contact between paper and plate surface upon printing and to improve printability have been reported in Japanese Patent Application Laid-open No. 2000-345493 in which a matte paper is produced by forming a coating layer with a pigment having a volumetric particle size distribution of more than 65% within the range of 0.4 to 4.2 μm on a base paper containing 10 parts or more by weight of mechanical pulp as a pulp for paper making and 3 to 12% by weight of paper of amorphous silica as a filler and then treating using a soft nip calender at 150° C. or higher; and in Japanese Patent No. 3093200 in which a bulky coated paper is produced by admixing a polyhydric alcohol and fatty acid ester compound or a polyhydric alcohol ester compound, said ester compound having alkylene groups having 2 to 4 carbons in less than 12 moles per mole of said ester compound to base paper for coating.

手段来解决不足的问题之间的联系的文件和钢板表面后，印刷及改善印刷适性已报道，在日本专利申请的下岗公开号2000-345493 ，当中一名磨砂纸所产生的形成层与色素有容积颗粒尺寸分布的65 ％以上的内部范围0.4至4.2 μ m的对基地文件，其中载有十个部分或以上按重量计算机械浆为纸浆造纸和第3至12 ％，按重量计算的文件白炭黑作为填料和治疗，然后用软债券发行计划的日历在150 ℃或更高；和在日本专利号3093200 ，当中一名笨重的涂布纸是由掺1多元醇与脂肪酸酯化合物或1多元醇酯复合说，酯化合物具有alkylene组有2至4活性炭在不少于12痣每摩尔说，酯化合物以原纸为涂层。

Content of butanoic acid, methyl ester; butanoic acid, ethyl ester; hexanoic acid, methyl ester; DMHF; DMMF identified in strawberry cultivated from green house were higher than that cultivated in the open field of the correspongding nitrogen levels , and the hexanoic acid, ethyl ester could only identified in green house strawberries.

不同氮素水平温室草莓果实中丁酸甲酯、丁酸乙酯、己酸甲酯、DMHF、DMMF的相对含量和总量均比相应氮素水平的露地草莓的高，且己酸乙酯只是在温室草莓中检测到。

Both in green house and in the open field ,relative content and total content of characteristic aroma components:of butanoic acid, methyl ester; butanoic acid, ethyl ester; hexanoic acid, methyl ester; hexanoic acid, ethyl ester; DMHF; DMMF trended to increase and then decline with the increment of nitrogen fertilizer, and the highest was the Mid-N fertilizer treatment. So favorable nitrogen application can promote the process of fruit aroma, that is , feasible fertilizer application could enhance fruit flavor.

在温室和露地两种栽培条件下，除成熟草莓果实的特征香气成分丁酸甲酯、丁酸乙酯、己酸甲酯、己酸乙酯、DMHF、DMMF的相对含量和总量均是随施氮量增加先增加后减少，中量氮肥处理最高，合理的施氮量有利于果实香气的形成，即适宜的施肥量有利于增进果实风味。3。

A carrier gas such as nitrogen is directed through line 20 and valve 22 to connect with line 26 and mix with the gas sample.

如氮气之类的载体通过管线20和阀22引入，与管线26相通，与气体样品混合。

But for the most part, knaves and parasites had the command of his fortune

然而支配他的家产的大多是恶棍和寄生虫。