Production: monomer boron, Danhuapeng, boron anhydride, without detectable; Hydrochloric acid , Yean , ammonia water.
生产：单体硼， 氮化硼， 硼酐，无水硼砂；盐酸，液氨，氨水。
Succinic acid dehydration is one of industrial methods to produce succinic anhydride.
丁二酸脱水法是工业生产丁二酸酐的方法之一。
The regioselective nitration of toluene and chlorobenzene with nitrates and supported nitrates on solid acid catalysts and supports in the presence of acetic anhydride is studied.
该文讨论了应用固体酸催化剂和载体，在醋酐存在下，采用硝酸盐和载体硝酸盐硝化甲苯和氯苯的选择性。
Similarly, using diketene to replace mixed anhydride or acid chloride, intermediate enol 5 May be obtained.
而由混合酸酐或双烯酮代替酰氯，中间体也可能是烯酮或烯醇5。
A series of rigid PU foams based respectively on maleopimaric acid ester polyols , rosin-maleicanhydride adduct ester polyols and turpentine-maleic anhydride adduct ester polyols were synthesized.
以马来海松酸酯多元醇、马来松香酯多元醇和松节油马来酐加成物酯多元醇为基，制备了硬质聚氨酯泡沫塑料。
The performance of the reaction using an acid anhydride as an acyl donor was compared with that using its corresponding free acid.
对分别使用酸酐和相应的游离羧酸作酰基给体时的反应性能进行了比较。
Dodecanol abietate succinic anhydride was synthesized from abietic acid. The structures of products were characterized by spectrum of IR, HNMR and MS.
以枞酸为起点，合成了十二醇酯琥珀酸酐，采用红外光谱、核磁共振波谱及质谱对中间产物及终产物进行了结构表证。
Synthesis of acyl azide from aldehyde, or acylhydrazine, or carboxylic acid , or acyl chloride, or anhydride, or ester is introduced in this paper.
介绍了由醛、酰肼、羧酸、酰氯、酐或酯合成酰基叠氮化合物方法。
The paper introduces the application of chromic flotsam natrium bisulfate in the course of neutralization and pre acidification in industry of chromic acid anhydride.
介绍铬酸酐生产中，含铬硫酸氢钠废料用于前工段中和、预酸化。
The experience adopted three methods to modify Monensin sodium salt and produced Monensin acid and Monensin succinic anhydride derivative. The experience is the basis of immunoassays.
本实验采用三种方法将莫能菌素钠盐改造成含羧基的莫能菌素酸及莫能菌素-琥珀酸酐衍生物，为建立免疫检测方法提供基础。
For improving epoxy-FRP thermal stability and securing its processability, liquid acid anhydride curing system is adopted.
为了提高环氧酸酐固化体系的耐热性，同时保证工艺操作的方便，采用液体酸酐混合是有效的方法。
Therefore, the intermediate product is phthalic acid and final products are phthalic anhydride, carbon dioxide and water.
因此反应的中间产物为邻苯二甲酸，终产物为邻苯二甲酸酐、二氧化碳和水。
The new water stabiliser TJ -302, a compound containing phosphonic acid, is synthetized in water phase with main materials, of maleic anhydride, acrylic acid and phosphate by one step.
以马来酸酐、丙烯酸和含磷化合物为主要原料，在水相中一步合成出含膦马-丙多元共聚物TJ-302；
The optimum operating conditions for reaction and separation processes were established. Both yield and product purity of succinic anhydride and peroxysuccinic acid were more than 90%.
确定出了各步反应及其产物分离的工艺条件，丁二酸酐、过氧化丁二酸的收率和产品纯度均达90 %以上。
Production: monomer boron, Danhuapeng, boron anhydride, without detectable; Hydrochloric acid, Yean, ammonia water.
生产：单体硼，氮化硼，硼酐，无水硼砂；盐酸，液氨，氨水。
Hardness and temperature, current density, chromium content of sulfuric acid anhydride and are closely related.
铬层软度与温度、电流密度、铬酐及硫酸的含量都有紧密亲密的干系。
Preparation of Octenyl succinic anhydride (OSA) modified starches from raw material potato starch and acid hydrolyzed potato starch in aqueous slurry system were first studied.
本课题以马铃薯淀粉和酸水解马铃薯淀粉为原料，对辛烯基琥珀酸淀粉酯的湿法制备工艺进行了研究。
The curing agent may be a polybasic acid anhydride.
所述固化剂可以为多元酸酸酐。
The orthogonal design was used in the optimum synthesis of cyclohexyl nitrate with the mixture of nitric acid and acetic anhydride as the nitrating agent of cyclohexanol.
以硝酸-醋酐混合物为环己醇的硝化剂，利用正交试验设计描述了硝酸环己酯的优化合成。
The condensation reaction takes place between the two hydroxyl of phthalic acid, and the phthalic acid be converted into phthalic anhydride finally.
邻苯二甲酸的两个羧基上的羟基会发生缩水反应，最终生成邻苯二甲酸酐。
Sulfuric acid and acetic anhydride were used as a cyclizing agent to prepare Ofloxacin intermediate. The reaction could be carried out under moderate conditions and facilitate industrial produce.
用硫酸乙酐混合物作环合剂，制备了氟嗪酸中间体．该方法具有反应条件温和、价格便宜、后处理简单的优点，适用于工业化生产。
The organic compounds are mainly benzoic acid anhydride, benzophenone, and so on.
生成的有机化合物成分比较复杂，主要成分有苯甲酸酐、苯甲酮等。
METHODS: Potentiometric titration was adopted to determine the content of terbinafine hydrochloride using glacial acetic acid as solvent, acetic anhydride instead of mercury acetate.
方法：采用电位滴定法，以冰醋酸为溶剂，用适量醋酐代替现行标准中使用的醋酸汞，建立了测定盐酸特比萘芬原料药含量的方法；
In a preferred embodiment, the binder composition includes an ethylene-maleic acid copolymer formed by the hydrolysis of an ethylene maleic anhydride copolymer.
在优选的实施方案中，粘合剂组合物包括由水解乙烯马来酸酐共聚物形成的乙烯-马来酸共聚物。
In the presence of catalyst phosphoric acid, isomeric addition of bipentene with cis-butenedioic anhydride can form terpenyl bu tenedioic anhydride compound as expoxylite firming agent.
用磷酸做催化剂，催化工业双戊烯与顺丁烯二酸酐进行异构加成反应。
Thiourea was then used as the primary catalyst to making fumaric acid from the waste water of phthalic anhydride.
接下来，通过选用硫脲作为主催化剂，另加入少量的助催化剂，将苯酐废水中的马来酸异构化制取富马酸。
Nonylphenol polyoxyethylene ether was esterified with maleic anhydride and then sulfonated with sodium bisulfite to form nonylphenol polyoxyethylene ether sulfosuccinic acid diester sodium salt.
以壬基酚聚氧乙烯醚为原料，与顺酐酯化再与亚硫酸氢钠磺化，合成了壬基酚聚氧乙烯醚琥珀酸双酯磺酸钠。
Synthesis of Water-soluble Hyperbranched Polymer with Alternating Amido, Tertiary Amino and Ester Units from Benzene-1,2,4-tricarboxylic Acid-1,2-anhydride and N-(2-Hydroxyethyl)piperazine.
由苯-1，2，4-三羧酸-1，2-酐和羟乙基哌嗪合成酰胺键、叔氨和酯键交替排列的水溶性超支化聚合物。
The influence of oleoyl polyamine prepared by oleic acid and triethylene-tetramine on the properties of cured product of epoxy resin and methyhetrahydrophthalic anhydride(MTHPA)was studied.
研究了油酸和三乙烯四胺的生成物油酰多胺对环氧树脂和甲基四氢苯酐固化物性能的影响。
An analysis of four factors which affect the yield of formyl aspartic acid anhydride, one of the intermediates of aspartame, was made in terms of their relational grades based on Grey System Theory.
依据灰色系统理论对影响甲酰天冬酸酐（合成天冬甜素的中间体）收率的因素进行了关联度分析。
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