查询词典 basic anhydride

ResultsThe purity of compound was 98%. IR showed Naproxin was conjugated to Phaeophorbide in acid anhydride.

结果HPLC测定其纯度为98％，红外光谱显示脱镁叶绿酸和萘普生形成了酸酐交联。

Polyaspartic acid was synthesized using maleic anhydride and ammonium salt as raw materials and characterized by IR and TG-DTA.

以马来酸酐和铵盐为原料合成聚天冬氨酸，对聚天冬氨酸进行了红外光谱和差热-热重分析表征，并对其阻碳酸钙垢及分散氧化铁的性能做了较系统的研究。

Catalytic synthesis of Aspirin over pretreated sodium acetate using salicylic acid and acetic anhydride as starting materials.

以水杨酸和乙酸酐为原料、无水乙酸钠为催化剂合成阿司匹林。

The reaction was carried out under the ratio of ramie to acetic anhydride and acetic acid of 1∶2.5∶4 at 60℃for 1 h.

通过FT-IR、SEM、纯水通量等手段考察了不同种类增塑剂对醋酸纤维素的影响。

Through feasibility research of investment project and theory of Financial Evaluation, investment feasibility research has been done about the vinegar acid anhydride production project in this thesis.

本文运用投资项目可行性研究和财务评价理论，对醋酐生产项目进行了投资可行性研究。首先，进行了细致的市场环境分析，从醋酐行业国内外市场现状、项目投资环境、主要产品市场方面进行细致的分析。

An alcohol evaporator for prodaction of acetic acid and acetic anhydride exploded during opera-tion.

一种用于生产醋酸和醋酸酐的酒精蒸发釜在服役中发生了爆炸。

Polyaspartic acid was synthesized with maleic anhydride and salvolatile as raw material by the method of thin layer polymerization.

以马来酸酐和碳酸铵为原料，通过薄层聚合制备了聚天冬氨酸，研究了反应物配比、聚合时间及反应温度等因素对聚合物产率、相对分子质量的影响；考察了聚合物用量及相对分子质量对阻垢性能的影响。

A new preparation method for antimony stearate by antimonous oxide, acetic anhydride and stearic acid was studied.

硬脂酸锑作为一种分子筛催化剂中有毒物质的钝化剂和一种新型的热稳定剂，可用于石油催化裂化、塑料、橡胶工业［1～3］。

Aspirin is synthesized through O-acylating reaction from salicylic acid and anhydride acetic acid with anhydrous sodium carbonate as catalyst.

以水杨酸和乙酸酐为原料，采用无水碳酸钠作为催化剂经O-酰化反应合成了阿司匹林。

IV . Content and Capacity: 2,400,000t/a stamping coke, 30,0000 t/a coal tar, 10,0000 t/a methanol, 10,0000 t/a phenol anhydride, 5,0000 t/a Needle coke, 10,0000 t/a Hydrogenation of anthracene oil, 10,0000 t/a Hydrogenation of Crude benzene, 2,0000t/a β-naphthol, 1,0000t/a 2-hydroxy-3-naphthaoic acid , 2,0000t/a UHP ultra-high power electrode.

四、项目建设内容及规模：240万吨/年捣固焦炉及化产回收、30万吨/年焦油、10万吨/年甲醇、10万吨/年苯酐、5万吨/年针状焦、10万吨/年蒽油加氢、10万吨/年粗笨加氢、2万吨/年二萘酚、1万吨/年2.3酸、2万吨/年 UHP 超高功率电极。

There are different types of personal loans available.

有许多不同类型的个人贷款优惠。

The above mentioned teaching model of spiral rising can be used to avoid rigidness in teaching.

上述螺旋式上升的教学模式，可以避免教学形成模式後的僵化现象。