The curing agent may be a polybasic acid anhydride.
所述固化剂可以为多元酸酸酐。
Phosphorous acid is the acid anhydride of orthophosphoric acid (h 3 PO 4).
五氧化二磷是正磷酸(H3PO4)的酸酐。
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。
This invention relates to a preparation method of substituent glutaric acid anhydride.
本发明涉及取代基戊二酸酐的制备方法。
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。
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。
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。
At least one of the cathode, the anode, the separator, and the electrolytic solution contains a sulfone compound having an acid anhydride group and a sulfonyl group.
正极、负极、隔膜以及电解液中的至少一种包含具有酸酐基和磺酰基的砜化合物。
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。
In this article are discussed the effects of three kinds of acid anhydride curing agents on the casting technology of epoxy resins as well as on the properties of cured resins.
本文着重探讨用于环氧浇铸的三种酸酐固化剂对浇铸工艺及其固化物性能的影响。
Methods: Using eudragitrs 100, triethyl citrate, hydrated magnesium silicate, magnesium stearate, silicic acid anhydride, povidone K30 and etc as capsules preparation materials.
方法：以空白丸芯、柠檬酸三乙酯、滑石粉、硬脂酸镁、胶体二氧化硅、聚维酮K30等为骨架材料制备吲达帕胺缓释胶囊；
The preparation methods including fatty acid anhydride method, fatty acid chloride method, transesterification method, etc, are reviewed, and their advantages and disadvantages are analyzed.
本文系统地介绍了长链脂肪酸淀粉酯的性质、合成方法和应用领域；
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。
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。
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。
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。
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。
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；
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。
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。
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 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。
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。
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 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。
Experiments proved that before incomplete hydrolysis, acetic anhydride not only couldn'treplace acetic acid, but also had indirect masking action for the detection of impurities.
试验还证明，醋酸酐在未完全水解之前不仅不能代替醋醚，相反对与杂质检出有间接的掩蔽作用。
Pyridine-2,3-dicarboxylic anhydride, a key intermediate of the herbicide imazapyr, was synthesized from pyridine-2,3-dicarboxylic acid and anhydride according to the methods in the patents.
吡啶羧酸酐是新型广谱除草剂灭草烟的重要中间体，文献所介绍的合成方法是以2，3-吡啶二羧酸与乙酸酐反应制得。
Acetylene has become increasingly prominent as a raw material for a whole series of organic compounds, among them acetaldehyde, acetic acid, and acetic anhydride.
对于整个系列的有机化合物，包括乙醛、乙酸、醋酸酐，乙炔已经成为越来越重要的原材料。
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。
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。
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