查询词典 basic anhydride

By using cadmium acetate as catalyst, polyitaconic anhydride was prepared through ring opening polymerization of itaconic anhydride.

以衣康酸为原料合成了衣康酸酐，并在乙酸镉的催化作用下通过开环聚合得到了聚衣康酸酐。

By using cadmium acetate as catalyst, polyitaconic anhydride was prepared through ring opening polymerization of itaconic anhydride.

环酯单体在不同引发/催化体系作用下的开环聚合是制备可生物降解脂肪族聚酯的主要方法。

The catalyst prepared by impregnation has good catalytic performance of maleic anhydride hydrogenation to succinic anhydride.

采用浸渍法制备的催化剂，具有较好的顺酐加氢制备琥珀酸酐活性。

A process approaching 3 and 4 chlorophthalic anhydride in high purity via chloriation of o xylene , oxidation of monochloro o xylene by air in gas phase,and separation of 3 and 4 chlorophthalic anhydride afterwards by distillation is described.

介绍由邻二甲苯氯代，再经空气氧化及异构体分离合成氯代苯酐中试规模的合成路线。

Reactor Construction: Multitube reactor systems for chemical industry ( all technical heat transfer fluids,particularly mkoltensalt 50 years experience) for production of:phthalic anhydride,maleic anhydride,acrolein,methyl methacrylate,methanol,ethylene oxide and other endothermic and exothermic catalytic gasphase processes.

反应器制造部：列管反应器系统，用于化学工业(所有工业用热交换流体，特别是熔盐传热)中生产苯酐，顺酐，丙烯醛，丙烯酸，甲基丙烯酸甲酯，甲醇，环氧乙烷及其他放热与吸热气相催化生产工艺。

Reactor Construction: Multitube reactor systems for chemical industry ( all technical heat transfer fluids,particularly mkoltensalt 50 years experience) for production of:phthalic anhydride,maleic anhydride,acrolein,methyl methacrylate,methanol,ethylene oxide and other endothermic and exothermic catalytic

简介： 反应器制造部：列管反应器系统，用于化学工业（所有工业用热交换流体，特别是熔盐传热）中生产苯酐，顺酐，丙烯醛，丙烯酸，甲基丙烯酸甲酯，甲醇，环氧乙烷及其他放热与吸热气相催化生产工艺。

Our main product are as follows: soda ash, phosphoric acid, selenium powder, pentaerythritol, phthalic anhydride, maleic anhydride, tartaric acid, glycerine, sodium acetate, lauric acid Lane Company by virtue of modern mode of operation, strict management system, excellent quality, reasonable price and professional service system, would like to warmly at home and abroad to cooperate sincerely with old and new customers, create brilliant!

我司主打产品如下：纯碱，磷酸，硒粉，季戊四醇，苯酐，顺酐，酒石酸，甘油，醋酸钠，月桂酸莱恩公司凭借现代化的运作模式、严谨的管理体制、优良的质量、合理的价格、专业化的服务体系，愿热忱与国内外新老客户精诚合作，共创辉煌！

The yield of coumarin could be reached up to 86.6% with lower consumption of acetic anhydride in case the total molar ratio of acetic anhydride to salicylaldehyde=1 9∶1 and the reaction was...

水杨醛与乙酸酐的总摩尔比为 1∶1.9，反应近终点时在( 2 14± 2 )℃保温反应 0 。5h，香豆素收率达 86.6%。

The yield of coumarin could be reached up to 86.6% with lower consumption of acetic anhydride in case the total molar ratio of acetic anhydride to salicylaldehyde=1.9∶1 and the reaction was kept 0.5 h at 212～216 ℃ when the reaction was close to the end.

水杨醛与乙酸酐的总摩尔比为1∶1 。9，反应近终点时在(214±2)℃保温反应0.5 h，香豆素收率达86.6%。

After getting two systems'GLE, absorption experiment was operated in laboratorytype equipment and the operation condition of dibutyl sebacate as absorbent were studied, the relationship of 〓 and the content of maleic anhydride in gaseous mixtures, the temperature of gaseous mixture, the liquid and gases ratio, the temperature of absorbent and the content of maleic anhydride in absorbent were studied respectively.

在获得气液平衡关系后，在自行设计的小型实验设备上分别就癸二酸二丁酯吸收顺酐的操作条件：进塔气中顺酐含量的变化、进塔气体温度的变化、液气比的变化、进塔溶剂温度的变化和吸收剂中顺酐含量的变化等对吸收效率的影响进行了初步探讨，推荐了合适的操作条件。

Who? I never heard of him, Paul said, before asking teammate James Posey if he had heard of him.

赛后，科比说，他一直都是一名非常出色的射手，今天他打得很棒。

When I joined the company, I rotated around the different sections.

我加入这个公司时，轮换过几个不同的部门。