查询词典 benzene-para-dicarboxylic acid

Refineesterification with advanced technology and granulation technology, relying on sophisticated production equipment and improve the analytical tools, produces high quality PVC plasticizers, plastic particles and other fine chemical products, including plasticizers Products including phthalate esters, benzene Sanjia esters, adipate esters, maleic acid ester and citric acid ester.

梁溪精化拥有先进的酯化技术和造粒技术，依靠精良的生产设备和完善的分析手段，生产高质量的聚氯乙烯增塑剂、塑料粒子和其它精细化工产品，其中增塑剂产品包括苯二甲酸酯、苯三甲酸酯、己二酯酯、马来酸酯以及柠檬酸酯。

Independent research and development company Azelaic Acid Products (Industry-level content) has the international advanced level of technology, to fill the domestic use of raw materials to large-scale production of the blank; production of 3 - mercaptopropionic acid products in the treatment of iron ions to achieve the level of international excellence ; iodine series, and products such as benzene nitrile series advantage at home and abroad are more products, customers receive the unanimous endorsement, and with only a handful of internationally-owned high-volume industrial production capacity.

公司自主研究开发的壬二酸产品具有国际先进水平的工艺，填补了国内用原料自行规模化生产的空白；生产的3-巯基丙酸产品在铁离子处理方面达到国际顶尖水平；碘系列和苯腈系列等产品更是国内外优势产品，得到客户的一致认可，且具备国际上只有极少数拥有的大批量工业化生产能力。

Goal compound synthesis namely: Take the vanillic acid as outset raw material, obtains 4- hydroxyl - 3- anisole methyl formate with the methyl alcohol reflux conditions, then after the etherification, the nitration, the return to original state, the ring closure response obtains 6- methoxy - 7- animal pen oxygen radical kui zuo lin - 4- alkone, then passes through the chlorination, the substitution aniline, to escape responses again and so on animal pen oxygen radical, etherification to obtain the goal compound; The goal compound and the diethylamine had the amine substitution reaction to obtain TM1, namely 4- benzene amino - 6- methoxy - 7- [2- hydroxyl - 3-(N, N- two ethyl aminos) third oxygen radical] kui zuo lin; Through zuo has the etherification with the Austria niter to respond obtains TM2, namely 4- benzene amino - 6- methoxy - 7- [2- hydroxyl - 3-(2- methyl - 5- nitryl imidazole) third oxygen radical] kui zuo lin.

目标化合物的合成即：以香草酸为起始原料，与甲醇回流条件下得到4-羟基-3-甲氧基苯甲酸甲酯，然后经过醚化、硝化、还原、环合反应得到6-甲氧基-7-苄氧基喹唑啉-4-酮，然后再经氯化、取代苯胺、脱苄氧基、醚化等反应得到目标化合物；目标化合物与二乙胺发生胺取代反应得到了TM1，即4-苯氨基-6-甲氧基-7-[2-羟基-3-丙氧基]喹唑啉；通过与奥硝唑发生醚化反应得到TM2，即4-苯氨基-6-甲氧基-7-[2-羟基-3-(2-甲基-5-硝基咪唑)丙氧基]喹唑啉。

Synthesis of target compounds namely: to vanillic acid as the starting material with methanol under reflux conditions for 4 - hydroxy -3 - p-methyl, then ether, and nitration, reduction, cyclization reaction 6 - methoxy -7 - benzyloxy-quinazoline -4 - one, and then by the chloride in place of aniline, benzyloxy-off, such as etherification reaction of the target compounds; target compounds with the second and third occurrence of substitution reactions of amines by the TM1, that is, 4 - amino-benzene -6 - methoxy -7 - [2 - hydroxy -3 -(N, N-diethyl amino) oxy c] quinazoline; with ether occurred Ornidazole reaction of TM2, namely, 4 - amino-benzene -6 - methoxy -7 - [2 - hydroxy -3 -(2 - methyl -5 - nitroimidazole) C oxy] quinazoline.

本论文以嘌呤类似物喹唑啉为母核，分别在其4位和7位引入结构多样的取代苯氨基和柔性侧链，设计了一系列4-取代苯胺基-6-甲氧基-7-(2-羟基取代丙氧基)喹唑啉类化合物。目标化合物的合成即：以香草酸为起始原料，与甲醇回流条件下得到4-羟基-3-甲氧基苯甲酸甲酯，然后经过醚化、硝化、还原、环合反应得到6-甲氧基-7-苄氧基喹唑啉-4-酮，然后再经氯化、取代苯胺、脱苄氧基、醚化等反应得到目标化合物；目标化合物与二乙胺发生胺取代反应得到了TM1，即4-苯氨基-6-甲氧基-7-[2-羟基-3-丙氧基]喹唑啉；通过与奥硝唑发生醚化反应得到TM2，即4-苯氨基-6-甲氧基-7-[2-羟基-3-(2-甲基-5-硝基咪唑)丙氧基]喹唑啉。

Then, inhibition mechanism and the relations between inhibition efficiency and molecular structure of inhibition of carbon steel in chlorhydric acid by benzene nitriles and quaternary ammonium salts are studied from microscope through quantum chemistry calculation, and according to the results, theory predicting and proof testing of a benzene nitrile (2-benzo butyl nitrile) are made.

利用Hansch关系的研究结果表明，苯腈类化合物在盐酸溶液中对碳钢缓蚀的缓蚀效率，可用苯腈类化合物氰基氮原子的净电荷密度和分子最高占据轨道能量或分子最低空轨道能量构成的表达式表达。量子化学计算研究结果表明：1、苯腈类化合物在盐酸溶液中对碳钢缓蚀的缓蚀机理可能是：苯腈类化合物分子以其氰基氮原子上的电子提供给铁的3d空轨道，形成配位键；同时铁的3d轨道上的电子提供给苯腈类化合物分子的能量最低空轨道，形成&反馈键&。

It takes heavy alkyl benzene as source material to synthesize alkyl benzene sulfonic acid through SO 3 falling film sulfurization technique and neutralization and re allocation.

介绍了以抚顺洗化厂的重烷基苯为原料经切割筛选，采用SO3 降膜式磺化工艺合成出烷基苯磺酸，再经中和、复配，研制出了性能稳定的烷基苯磺酸盐。

The coupling reactions of Suzuki between the transitional metal-catalyzed phenylo boric acid and benzene halide and the Suzuki-Type between phenylo boric acid and carboxylic acid derivatives are two kinds of important reactions in constructing C-C bond.

过渡金属催化的苯硼酸与卤代苯之间的Suzuki和与羧酸衍生物之间的Suzuki-Type偶联反应是构建C-C健的两种重要反应。

The solubility curve of mandelic acid in different solvent and the distribute ratio of mandelic acid in benzene-water system in different pH condition were determine by HPLC. The results showed that the ionization constant pK_a of mandelic acid was 5.28, the solubility of mandeli...

研究结果显示，扁桃酸的离解常数pKa值为5.28；扁桃酸在水和苯中的溶解度曲线可分别表示为：S=38.756e0.0354t和S=0.2746e0.0649t；扁桃酸在水和苯中的溶解度差值曲线可分别表示为：ΔS/S1=0.1196t-2.712和ΔS/S1=0.3688e0.0723t；苯是最适合用于冷却结晶的溶剂；热苯萃取扁桃酸的苯水比例可选为1∶1；降低pH值有利于扁桃酸在苯中的分配。

The compound prescribe methyl benzene Mi Shi(soon effect bowel the insect is pure) is a methyl benzene Mi the Shi go together with the hydrochloric acid left Xuan Mi Shi five to make into, takes 2 slices, but some dogs appear then blood, and the reason isn't pure.

复方甲苯咪唑是甲苯咪唑与盐酸左旋咪唑配伍制成，顿服2片，但有的狗出现便血，原因不清。

The company developeddmmer acid synthesis technology in Sichuan bentonite mainly catalyst , the product quality and finished product rate both were much better than the internal industry(dimmer acid color:≤7#, viscosity : between 5000~10000 cp/250C adjustable , finished product rate :≥10% internal industry); a series products project : dimer acid 、 monomer acid 、 benzene dissolved polyamide resin 、 alcohol dissolved polyamine resin and polyamine hotmelt adhesive , let enterprises in the fierce market competition , flexible adjustment product structure , to cope with the market with facility .

本公司自行研发出的以四川膨润土为主催化剂的二聚酸合成技术，在产品质量和产品收率上均大大优于国内同行业产品（二聚酸色泽≤7#，粘度在5000～10000cp/250C之间可调，收率≥10%同行业。）：二聚酸、单体酸、苯溶聚酰胺树脂、醇溶聚酰胺树脂、液体聚酰胺树脂及聚酰胺热溶胶。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。