an organic acid characterized by one or more carboxyl groups

in many references, the imidazoline type inhibitors were synthesized from carboxylic acid and organic amine dehydration that formed a cycle under certain temperature and condition.

诸多文献所报道的咪唑啉化合物的合成大都是以羧酸和有机胺为原料在一定温度和条件下酰胺化缩合脱水成环。

and what it「s used is to convert one type of group, what」s called a carboxylic acid into another type of very reactive intermediate, which is called an acid chloride.

它被用来将一类被称作羧酸的化合物，转化成另外一类活性很高的反应中间体，也就是酰氯。

the calculating method which corrects non-ideality of vapor phase for systems containing carboxylic acid by 「chemical theory」 was described in detail.

详述了用「化学理论」对含羧酸体系的汽相非理想性校正的计算方法。

preferably the resin contains at least one acidic group and more preferably at least one carboxylic acid group.

最好的树脂至少包含一个酸性组和更多的最好至少一羧酸组。

aim to explore the potential inhibition of platelet aggregation and synthesis of substituted benzene carboxylic acid derivatives.

目的探讨取代苯基羧酸衍生物的合成及抑制血小板聚集作用。

the results showed that a type of carboxylic acid with better dispersion could be synthesized by the way of changing the ratio of the different side-chains.

实验结果表明：通过调整聚羧酸共聚物中侧链链长的比例使其具有最佳的分散性。

however, it has many disadvantages, so the development of new types of catalysts with high efficiency is an important subject in the field of synthesis of carboxylic acid esters.

因此，开发新型高效催化剂是羧酸脂合成领域的一个重要课题。

methods tropisetron hydrochloride was synthesized from indol-3-yl carboxylic acid by chlorination and condensation with tropic alcohol lithium, then salt formation with hydrochlororic acid.

方法：以吲哚-3-甲酸为起始原料，酰氯化后与托品醇锂发生缩合反应，再与盐酸成盐制得盐酸托烷司琼。

stereoselective oxidative dimerization of the enolate of carboxylic acid derivatives is summarized focusing on the stereoselectivity of the process.

综述羧酸衍生物的烯醇盐氧化二聚成键的规律，重点是立体选择性的过程。

fat a triglyceride of a long-chain carboxylic acid that is solid below 20℃.

一种长链羧酸的甘油三酯，20℃以下为固态。

the esterification mechanism of unsaturated carboxylic acid was analyzed.

分析了不饱和羧酸酯化反应的机理。

an experimental research on changing law of calcium carbonate inhibition behavior of phosphono carboxylic acid copolymers was carried out by using a static experimental method.

本文采用静态实验方法，对不同条件下新型阻垢剂膦酰基羧酸共调聚物抑制碳酸钙垢的性能变化规律进行了实验研究。

so, the chemical modification which is carboxylic acid monomer graft copolymerization and adding in some functional monomers to prepare waterborne epoxy resin was carried out.

因此，我们采用羧基单体接枝共聚并加入功能单体的方法对环氧树脂进行水性化的化学改性。

in the third chapter, a series of 1-indolizine carboxylic acid or 1, 2-indolizine dicarboxylic acid derivatives were synthesized.

合成了一系列1位或1，2位含有羧酸基团的中氮茚羧酸衍生物。

in the roots, there were carboxylic acid ester and alkane.

而茅莓根的主要化学成分是有机酸酯和烷烃。

the scheme initially involves acylation of thiophene using a carboxylic acid to afford the acyl thiophene.

这条路线是先用羧酸使噻吩已酰化制得酸基噻吩。

the advanced carboxylic acid waterproofing agent became main content of cement liquid water-repellent admixture that korean most used.

而高级羧酸系防水剂为韩国使用最多的「水泥液体防水剂」的主要材料。

the paper also shows the disadvantage in the process of producing propylene glycol ether carboxylic acid esters, and shows status quo of the study of prepare technology.

论述了现有丙二醇醚羧酸酯类生产的缺点及生产工艺研究现状，指明了反应精馏是丙二醇醚羧酸酯类生产工艺研究重点和发展趋势。