均苯四甲酸二酐；重力热管换热器；应用；
Pyromellitic Dinahydride Anhydride; Gravity Heat Pipe Heat Exchanger; Application;
用均匀沉淀法合成了均苯四甲酸过渡金属配合物。
Transitional metal complexes of pyromellitic acid were synthesized by homogeneous precipitation method, and characterized by TG, element analysis and FTIR.
该均苯四甲酸二酐具有在运输、储存和使用期间不会引起堵塞等的粒子性 质。
The pyromellitic dianhydride has particle properties not causing plugging, etc. during its transportation, storage and use.
介绍了重力热管换热器的工作原理、结构和传热特性，以及重力热管换热器在均苯四甲酸二酐生产中的应用情况。
The working principles, structure, and heat transfer characteristics of the gravity heat pipe heat exchangers, and their application in production of pyromellitic dianhydride anhydride were presented.
气相氧化法是将空气与汽化后的均四甲苯混合进入含有催化剂的氧化反应器进行氧化反应，反应产物经换热冷却后，均苯四甲酸二酐直接从气相中凝华捕集。
In the method of air phase oxidation the mixed gas that boiling 1,2,4,5-tetramethyl benzene is combined with air is carried into oxidation reactor and reacts and then product gas is cooled.
采用均苯四甲酸酐（PMDA）和过氧化二苯甲酰（BPO）双固化剂固化聚丁二烯环氧树脂（ELPB），制备了ELPB/PMDA/BPO耐高温胶粘剂。
The high temperature resistant adhesive was prepared based on liquid polybutadiene epoxy resin(ELPB) cured by pyromellitic dianhydride(PMDA) and benzoyl peroxide(BPO).
目的合成喹诺酮类抗菌药中间体四氟邻苯二甲酸，并改进工艺，使之适用于工业化生产。
Objective To improve the synthesis of tetrafluorophthalic acid as an intermediate in preparing quinolone antibacterials.
由对乙酰氧基苯甲酸、对苯二酚二乙酯、2，6-萘二甲酸及间苯二甲酸四种单体通过熔融缩聚反应，合成了全芳香族四组分共聚酯。
The wholly aromatic four-component copolyesters were prepared from p-acetoxy-benzoic acid, hydroquinone diacetate, 2,6-naphthalene dicarboxylic acid and isophthalic acid by melting polycondensation.
由对乙酰氧基苯甲酸、对苯二酚二乙酯、2，6-萘二甲酸及间苯二甲酸四种单体通过熔融缩聚反应，合成了全芳香族四组分共聚酯。
The wholly aromatic four-component copolyesters were prepared from p-acetoxy-benzoic acid, hydroquinone diacetate, 2,6-naphthalene dicarboxylic acid and isophthalic acid by melting polycondensation.
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