phthalic anhydride

Cetyl phthalate was prepared from phthalic anhydride and cetyl alcohol as raw materials catalyzed by non-acid catalyst.

以苯酐与十六醇为原料，选用非酸催化剂，在实验室合成了增塑剂邻苯二甲酸双十六烷基酯。

Utilization of Reaction Heat for Optimizing the Conversion Rate in the Production of Phthalic Anhydride

利用反应热提高苯酐收率的方法

The market demand, price and development trend of world phthalic anhydride are reviewed.

介绍了国内外苯酐的市场需求和价格情况以及发展趋势.

Innovation for Production Flow of Phthalic Anhydride Plant During the Prophase and Metaphase of Catalyst Use

催化剂使用的前、中期苯酐生产流程的改造

Trimellitic anhydride and o-phthalic anhydride are the mainly by-products in the producing process of pyromellitic anhydride.

均苯四甲酸二酐产品中主要含有偏苯三酸酐、苯酐等副产.

Produced by a Reaction of Phthalic Anhydride and Alcohol.

邻苯二甲酸酐与醇反应产物.

Ring opening alternating copolymerization of phthalic anhydride and propylene oxide by nd ( naph) 3 al ( I bu) 3

Nd（naph）3-Al（i-Bu）3催化邻苯二甲酸酐与环氧丙烷交替共聚

Exothermic reaction can be reduced by adding hexahydrophthalic anhydride to the phthalic anhydride.

用六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.

A widely used durable synthetic resin derived from glycerol and phthalic anhydride.

醇''.'酸'.''树脂从丙三醇和酞''.'酸'.''''.'酐'. ''中提炼出的一种应用范围很广的耐用合成树脂.

Kinetic studies on the polyesterification of ethylene glycol with maleic acid and phthalic anhydride

乙二醇与顺丁烯二酸及邻苯二甲酸酐聚酯化反应动力学的研究

I perennial companies operating chemical raw materials: styrene, anhydride, phthalic anhydride, and so on.

我公司常年经营化工原料: 苯乙烯 、 顺酐 、 苯酐等.

Methods Chloroacetic acid was treated with thionyl chloride, amines and triphenylphosphine to provide quaternary phosphonium salts, which were treated with phthalic anhydride to get the target compounds by the Wittig reaction. The pure products were obtained by silica gel column chromatography.

方法以氯乙酸为起始原料，依次与氯化亚砜、胺、三苯膦反应制得季磷盐，再与邻苯二甲酸酐经Wittig反应制得目标化合物，硅胶柱色谱得纯品。

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。

Analysis on Fire Explosion Risks of Oxidation Reactor Group in the Production of Phthalic Anhydride and Their Countermeasures

苯酐生产氧化反应器组火灾爆炸危险性分析与对策

Process for synthesizing dimethyl phthalate ( DMP) for phthalic anhydride and methanol has developed.

研究以苯酐、甲醇为原料合成邻苯二甲酸二甲酯的方法。

Carboxylic crosslinked polystyrene ( PS-COOH) microsphere has been prepared by Friedel-Crafts acylation with phthalic anhydride.

选用邻苯二甲酸酐以傅克酰基化反应制备了聚苯乙烯（PS）羧基化弱酸性离子交换树脂。

Effect of molecular weight of poly ( amic acid) end-capped with phthalic anhydride on the rate of imidization

聚酰胺酸相对分子质量对亚胺化速率的影响

Mazindol was synthesized by four steps from chlorobenzene and phthalic anhydride an overall yield of 23.4 %.

以氯苯和邻苯二甲酸酐为起始原料,经四步工序合成马吲哚,总收率为23.4%.

EBE monitored control system is an assistant to operator of 2000 TPY phthalic anhydride plant.

EBE监视系统是2000t/a苯酐装置操作人员的有力助手以蒸馏水为溶剂，在233nm处测定吸光度，经方法学验证，适用于该品体外控制。

The 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.

Fatty acids, vegetable-oil, polymers with benzoic acid, pentaerythritol, phthalic anhydride, stearic acid and trimethylolethane;

脂肪酸与植物油聚苯甲酸、季戊四醇、邻苯二甲酸酐、硬酯酸和三甲氧基乙烷的聚合物；

The reaction adopted strong-acid cation exchange resin catalysed phthalic anhydride and butyl alcohol.

催化邻苯二甲酸酐与正丁醇的酯化反应.

Discussion on Adding Partial Condensator in Phthalic Anhydride Plant

苯酐装置采用部分冷凝器的探讨

The reaction adopted strong-acid cation exchange resin catalysed phthalic anhydride and alcohol.

采用强酸性阳离子交换树脂催化邻苯二甲酸酐与正丁醇的酯化反应.

In this paper, the catalytic properties of four kinds of zeolite molecular sieves were studied in acylation reaction to synthesize anthraquinone by benzene and phthalic anhydride, the appropriate HM-3 zeolite molecular sieves was selected, on which the modification was studied.

本文研究了四种H-型沸石分子筛在苯与苯酐合成蒽醌的酰基化反应中的催化性能，优选出较适宜的沸石分子筛HM-3，并在此基础上进行改性研究。

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。

Tetrachlorophthalic anhydride was synthesized with phthalic anhydride as raw material, compounded iodine as catalyst by direct separation of crystal from solvent on the basis of solvent method.

在溶剂法基础上，以苯酐为原料，复合碘作催化剂，产品直接结晶分离的方法合成四氯邻苯二甲酸酐。

Intermittent Addition of Catalyst in Continuous Production of Phthalic Anhydride STUDY ON THE AXLE SEALING OF PUMP USED IN TANNIN EXTRACTS INDUSTRY

连续生产苯酐中不停车加催化剂栲胶泵轴密封的研究&副叶轮动力密封和飞球离心式机械停车密封装置

Process for synthesizing dimethyl phthalate ( DMP ) for phthalic anhydride and methanol has developed.

研究以苯酐、甲醇为原料合成邻苯二甲酸二甲 酯 的方法.

Analysis of the Reasons behind Increases of Phthalic Anhydride Acid Plant Run Suds Pool

苯酐装置酸水池冒沫增大原因的分析探讨