Phthalic anhydride is irritant to tissue and should be handled with care.
邻苯二甲酸酐对细胞组织有刺激性，使用时要小心。
The kinetics of polyesterification of phthalic anhydride with diethylene glycol was investigated.
对邻苯二甲酸酐和二甘醇的聚酯化动力学进行了研究。
Phthalic anhydride residue is the by product from oxidation of naphthalene oro xylene.
苯酐渣系萘氧化或邻二甲苯氧化的副产物。
Based on the faults occurring in the turbine fan set of a phthalic anhydride plant, some efficient methods were proposed to ensure the safe operation of the plant.
针对苯酐装置中透平风机机组多次出现的故障采取了有效的处理办法，确保了装置的安全运行。
An optimizing control configuration for oxidizing reaction in the production of phthalic anhydride is proposed in this paper.
本文给出一种苯酐生产中氧化反应收率的最优控制方案。
Based on reaction kinetics, the process flow diagram of continuous esterification and reaction conditions were set. The conversion of phthalic anhydride was over 99.8%.
应用酯化反应动力学，确定了连续酯化的流程及操作条件，苯酐的转化率达到99.8%以上。
The method according to the invention allows an increase in total yield of phthalic anhydride without any or without substantial decrease in product quality.
本发明方法可提高邻苯二甲酸 酐总体收率而不会降低或不会显著降低产品质量。
The hydrolysis kinetics of phthalic anhydride was investigated.
对邻苯二甲酸酐水解反应动力学进行了研究。
Any of a group of chemical compounds formed by a reaction of phthalic anhydride with a phenol from which certain synthetic dyes are derived.
酞一组化合物之一，由邻苯二甲酸酐和酚反应而成，某些合成染料是由此提取的。
Through the analysis of the experimental data, discussed the optimum condition and the practical operating rules of the phthalic anhydride catalyst loading, and the scientific testing after loading.
以实践中取得的真实数据，探讨了苯酐催化剂装填的最佳条件、装填的实际操作规程、装填后催化剂科学测试等几方面难题。
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。
An improved and optimum process for preparing 2-Amylanthraquinone by re-acting t-amylbenzene with phthalic anhydride, involving Friedel-Crafts acylation (yield 80. 2%) and cyclization(yield 81.4%).
以叔戊苯和笨酐为原料，通过酰基化和关环合成了2—戊基蒽醌，改进和优化了各步合成工艺条件，酰化收率80.2％，关环产品收率81.4％。
It was showed that the plant system modification could prolong condensator life and enhance the yield of phthalic anhydride.
结果表明，装置系统改造能提高切换冷凝器的寿命，提高苯酐收率。
Phthalic Anhydride condenser is one of the most important heat exchangers in Phthalic Anhydride refining production, and its main failure mode is stress corrosion.
苯酐冷凝器是苯酐精制生产最重要的换热器之一，其主要失效形式为应力腐蚀。
In this article was discussed the formulation and process of synthesis of rosin-modified unsaturated polyester of non-phthalic anhydride.
本文讨论了无苯酐合成松香改性不饱和聚酯树脂的配方和工艺。
The flow sheet and operation in phthalic anhydride plant system after the adding partial condensator were introduced.
介绍了苯酐装置系统中增加部分冷凝器的流程，操作讨论了加部分凝冷器前后的经济效益。
The decolorization efficiencies of powder actived carbons and macroporous resins have been studied on the treatment of phthalic anhydride wastewater.
就粉末活性炭和大孔树脂对苯酐酸水的脱色效果进行了研究。
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。
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。
An alkyd resin has been developed with chemical fiber waste residue as raw material in replacing of phthalic anhydride at the presence of a new catalyst.
采用了一种新型的催化剂，以化纤废渣为原料代替苯酐生产醇酸树脂。
F-Gel coat resin was prepared from propylene glycol, maleic anhydride, phthalic anhydride, m-phthalic acid and styrene and the properties of products met with the requirement of composite material.
以丙二醇、顺酐、邻苯二甲酸酐、间苯二甲酸酐、苯乙烯为原料研制出的F型胶衣树脂，产品性能满足复合材料制品性能要求。
Place 49 g of phthalic anhydride in an amber bottle and dissolve it in 300 ml of pyridine that has been freshly distilled over phthalic anhydride.
将49克邻苯二甲酸酐放入琥珀瓶里，倒入300毫升的嘧啶（在刚才准备邻苯二甲酸酐的过程中蒸馏好的）稀释。
The catalysis effect of some catalysts on the synthesis of unsaturated polyester of phthalic anhydride type was studied.
本文研究了几种催化剂对合成邻苯二甲酸酐型不饱和聚酯的催化作用。
Synthesis of BLP was studied by using PEG 400 as catalyst and phthalic anhydride, butyl alcohol and lauryl alcohol as reactants.
研究了以聚乙二醇400（PEG-400）为催化剂，以邻苯二甲酸酐、 正丁醇、 月桂醇为原料合成邻苯二甲酸丁基月桂酯（BLP）的试验过程。
Exothermic reaction can be reduced by adding hexahydrophthalic anhydride to the phthalic anhydride.
氢 化邻苯二酸酐加入到邻苯二酸酐中，可使其放热反应减慢。
The catalyst had high activity and high selectivity in esterification of phthalic anhydride with isoamyl alcohol.
该催化剂对邻苯二甲酸酐和异戊醇的酯化活性高，无副反应。
The present invention discloses method of reducing phthalic anhydride colour number by using active carbon.
本发明公开了一种用活性炭降低苯酐色号的方法。
Said active carbon is particle in shape, fixed bed can be used absorption or stirring kettle type absorption to treat phthalic anhydride.
该活性炭为颗粒状，可采用固定床吸附或搅拌釜式吸附处理苯酐。
Drink, Medicine, Pesticide and Electricity plating. In the meanwhile we need to import large quantities of raw materials every year such as Phthalic Anhydride.
该产品被广泛应用于食品、饮料、医药、农药，电镀等行业，同时，每年还需从国外进口大量的苯酐。
Drink, Medicine, Pesticide and Electricity plating. In the meanwhile we need to import large quantities of raw materials every year such as Phthalic Anhydride.
该产品被广泛应用于食品、饮料、医药、农药，电镀等行业，同时，每年还需从国外进口大量的苯酐。
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