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- A review with 58 refs on the application of trimellitic anhydride and pyromellitie dianhydride to the coating for electric insulation,heat resistance,corrosrion resistance,and so on. 介绍了偏苯三甲酸酐与均苯四甲酸二酐在电绝缘、耐热、防腐蚀等涂料上的应用。
- pyromellitie dianhydride ( PMDA ) 均苯四甲酸二酐
- pyromellitie dianhydride 均苯四酸二酐
- The key to development the PI is the industrialization of Biphenyltetracarboxylic dianhydride(BPDA). 发展联苯型聚酰亚胺的关键是解决主要原料联苯四酸二酐的工业化生产。
- C.I. pigment red 179 was synthesized by condensing 3, 4, 9, l0-perylene tetracarboxylic dianhydride with methyl amine. 摘要本文以3,4,9,10-苝四甲酸二酐和一甲胺为原料，以脂肪醇催化制备苝系颜料的方法。
- The effect of reaction temperature of the formation on thioether dianhydride monomer was discussed. 讨论了温度对硫醚二酐形成的影响。
- In this paper, 1, 2, 3, 4-butanetetracarboxyl dianhydride was prepared from butadiene and maleic anhydride. 本文从一般原料出发，经过三步合成出1，2，3，4-丁烷四羧酸二酐。
- Taking pyromellitic dianhydride and thionyl chloride as raw key material, 2,5-bis(methoxycarbonyl)terephthaloyl chloride was synthesized. 以氯化亚矾及均苯四甲酸酐为主要原料通过酰氯法合成了对位均苯二甲酯二酰氯。
- The poly(urethane-imide) (PUI) which uses isophorone diisocyanate, dispersed red 19 (DR-19), and pyromellitic dianhydride is synthesized. 以异佛尔酮二异氰酸酯，分散红-19和均苯四甲酸二酐合成聚氨酯-酰亚胺（PUI）；
- With58 references this review deals with the synthesis, characteristics and application of EDTA dianhydride and their derivatives. 本文综述了EDTA二酐及其衍生物的合成、性质和应用。
- The structure of 1,4-bis(3,4dicarboxyphenoxy)benzene dianhydride and other intermediates were confirmed by IR,1H-NMR spectra. 用IR,1H-NMR表征了1,4-双(3,4-二羧基苯氧基)苯二酸酐及其他中间体化合物的结构。
- The effects of 1, 2, 4, 5-benzenetetracarboxylic acid dianhydride introduced during the esterification process were also investigated. 同时研究了酯化过程中引入的均苯四酸二酐的作用。
- The behavior of pyromellic dianhydride (PDA) and m-benzenedicarboxylic acid(m-BDA) as positive electrodes in an organic electrolyte for Li cell was investigated. 为了探讨锂-均苯四甲酸二酐(PDA)电池和锂-间苯二甲酸(m-BDA)电池的阴极行为。
- A series of poly(amic acid)s based on pyromellitic dianhydride (PMDA) and oxydiphthalic tetracarboxylic dianhydride (ODPA) was prepared in different solvents. 在不同溶剂中合成了一系列均苯二酐 ( PMDA)型和二苯醚二酐 ( ODPA)型聚酰胺酸 ( PAA) .
- A new ketone resin is prepared from residuum of cyclohexanone rectification and formaldehyde with compound acid as catalyst,it is modified with pyromellitic dianhydride. 以环己酮精馏残渣和甲醛为原料，用复合酸作催化剂，通过均苯四甲酸酐改性，合成一种新的酮树脂。
- Polyimide foams were prepared from poly(ester-amine salt) precursor powder through a foaming process,using aromatic dianhydride and diamine as monomers. 以芳香二酐和二胺为单体,采用聚酯铵盐前体粉末发泡的方法制备聚酰亚胺泡沫材料。
- The application and production process of pyromellitic dianhydride are presented,and the recycle and application of the waste in manufacture was emphasized. 本文介绍了均苯四甲酸二酐的用途和生产过程,同时重点介绍了生产中废料的回收利用。
- Based on 26B4APBN monomer,polyamic acid was obtained by polymerization with pyromellitic dianhydride(PMDA),and further imidized into polyimide(PI) film by heating process. 由二胺单体和均苯四甲酸二酐(PMDA)进行聚合得到26B4APBN/PMDA聚酰胺酸,再经热亚胺化得到聚酰亚胺薄膜;
- The methods of collecting pyromellitic dianhydride which is low concentration from the high temperature reaction gas prepared by the gas phase catalytic oxidation of durene are introduced. 介绍了从均四甲苯固定床气相氧化法的高温反应气中捕集低浓度的均苯四甲酸二酐的各种方法。
- A kind of thermoplastic polyimide(TPI) was synthesized with 3,3',4,4'-benzophenone-tetracarboxylic dianhydride(BTDA) and 4,4'-oxydianiline(ODA) as monomers,the imidization process was a chemical one. 以3,3’,4,4’-二苯甲酮四酸二酐(BTDA)和4,4’-二氨基二苯醚(ODA)为原料,采用化学环化法合成了酮酐型热塑性聚酰亚胺(TPI)。
