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- The photocurable carboxylated epoxy acrylate(CEA) resins were synthesized via the reaction between hydroxyl group on epoxy acrylate resin(EA) and polybasic carboxylic acid anhydride, e. 将环氧丙烯酸树脂分别和5种多元羧酸酐反应,得羧基化环氧丙烯酸酯(CEA)树脂,实验了6种催化剂,其中以四甲基溴化铵的效果较为理想。
- CARBONYL COMPOUNDS: Summary of Various Types of Carbonyl Compounds -- Aldehydes and Ketones, Carboxylic Acids and Carboxylic Acid Derivatives (Acid Chlorides, Acid Anhydrides, Esters and Amides). 羰基化合物:各种羰基化合物的总结--醛、酮、羧酸和羧酸衍生物(醯卤,酸酐,酯和醯胺)
- carboxylic acid anhydride 羧酸酐
- carboxylic acid anhydrid 羧酸酐
- Using acid or pyridine as a catalyst,nitrogen aci3,4-diamino-3-cyclobutenedione)can be acylated by carboxylic acid,acetic anhydride and acyl chloride. 在酸或吡啶催化下,氮方酸(3,4-二氨基-3-环丁烯二酮)可被酰化试剂羧酸、醋酐和酰氯酰化;
- Synthesis of acyl azide from aldehyde, or acylhydrazine, or carboxylic acid ,or acyl chlo-ride, 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。
- Carboxylic acid esters are important chemical raw materials. 羧酸酯是重要的化工原料。
- Sulfuric acid is main catalyst for the synthesis of carboxylic acid esters. 羧酸酯的合成主要用硫酸作催化剂,但这种催化剂有许多缺点。
- N-Carboxy-alanine acid anhydride (NCA) was synthesized by L-alanine and Triphosgen. 摘要利用L-丙氨酸和三聚光气反应制备了N-羧基-丙氨酸-环内酸酐(NCA)。
- One exception is the decarboxylation of aromatic carboxylic acids. 芳香羧酸进行脱羧反应是一个例外。
- Phosphorus Pentoxide, also called Phosphoric Acid Anhydride, is a white, spiculate crystal. 五氧化二磷又名磷酸酐,白色针状晶体。
- 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、二苯甲酮等。
- Compared with the amine curing agent, the casting epoxy resin cured by the acid anhydride has higher flashover voltage. 实验结果表明:酸酐固化的试样比胺类固化试样闪络电压要高;
- The scheme initially involves acylation of thiophene using a carboxylic acid to afford the acyl thiophene. 这条路线是先用羧酸使噻吩已酰化制得酸基噻吩。
- The recent progress in the activation and reaction of carboxylic anhydride as well as the catalytic, halide-free processes for the preparation of aldehydes or ketones directly from corresponding carboxylic acids was reviewed. 摘要综述了钯催化的酸酐碳一氧键的活化和反应,及由羧酸直接制备相应的醛、酮且不需要卤原子和碱参与的方法。
- The effects of the poly(l,2-butadiene) oligomer carboxylated with maleic acid anhydride (MLPB) on the cork powder filled NBR and on the IIR recipes were researched in this paper. 本文简要介绍了马来酸酐化聚丁二烯(MLPB)在软木填充丁腈橡胶制品和丁基橡胶配方改性中的应用效果。
- Maleic anhydride is the important organic chemical material, is the third largest acid anhydride behind the phthalic anhydride and acetic anhydride. 顺丁烯二酸酐,简称顺酐或者马来酐,是重要的有机化工原料,是仅次于苯酐和醋酐的第三大酸酐。
- Carboxylic acid was peroxidized in organic solvents catalyzed by lipase and glycidol was synthesized from allyl alcohol catalyzed by acid peroxide. 摘要利用脂肪酶在有机介质中催化制备过氧酸,丙烯醇在过氧酸的作用下发生环氧化反应生成环氧丙醇。
- Nitric acid oxidation was found to reduce the surface hydroxyl (OH) groups in increasing the carboxylic acid (COOH) groups. 硝酸氧化减少了碳纤维表面的羟基含量,同时增加了碳纤维表面的羧基含量。
- Phthalein acid anhydride Photophobic pharmaceutical and has special protective action on the ultraviolet ray. It can cure sunlight dermatitis, eczema, etc. 酞酐避光剂,对紫外线具有特殊的保护功效,可治疗日光性皮炎,湿疹等。