查询词典 anhydride

The way that determination the content of maleie anhydride has been reported is not accurate.

目前，文献上提到的顺丁烯二酸酐含量测定方法的误差较大。

Hardness and temperature, current density, chromium content of sulfuric acid anhydride and are closely related.

铬层软度与温度、电流密度、铬酐及硫酸的含量都有紧密亲密的干系。

In this article, Fe3-Al3 was first used to catalyze copolymerization of maleic anhydride and isoprene.

研究了双金属体系Fe3-Al3催化马来酸酐与异戊二烯的共聚反应。

METHODS: The mixed anhydride method was used.

用混合酸酐法合成。

Can be soluble in ether, but not FE can form acid anhydride.

能溶于乙醚，但不FE能形成酸酐。

The flexible epoxy resins could cure completely with anhydride at 150℃ in 8 hr.

可挠性环氧树脂与酸酐可以在150℃温度下经8小时固化完全。

The new preparation method of polymaleic acid from maleic anhydride by plasma-initiated polymerization in aqueous solution was studied.

本文研究了用等离子体引发马来酸酐水溶液聚合制备聚马来酸的新工艺。

For the synthesis of NHC precursors, there are also several routes: condensation of glyoxal, amines and paraformaldehyde; alkylation of imidazole or monosubstituted imidazole with alkyl halide; annulation of ortho esters and 1,2-diamines; ring closure of hydrazines or amides with acetic anhydride; reduction of thiones with Na/K in THF.

关于N-杂环卡宾前体的合成途径主要有：乙二醛、伯胺和多聚甲醛的缩合反应；卤代烷与咪唑及其取代咪唑的烷基化反应；原甲酸酯与1，2-二胺的成环反应；肼或酰胺与酸酐的环化反应；用Na/K对环硫脲化合物的还原反应。

Although hasten of near future of upriver cooking benzene is firm, but the range that the market rises is not big, each manufacturer is maintained more move smoothly, the amplitude modulation on shipment price is lesser, to suitable anhydride market prop up gradually firm, if crude benzole market goes high further, driving the possibility that cooking benzene rises is not to do not have, the crude benzole stock of manufacturer of each cooking benzene and benzene hydrogenation manufacturer is not at present much, the crop of cooking benzene is not big, market supply of goods is not much, do not eliminate small to walk along high probability.

虽然上游焦化苯近期趋稳，但市场上涨的幅度不大，各厂家多维持平稳运行，出货价格上调幅度较小，对偏苯三酸酐市场的支撑渐稳，若粗苯市场进一步走高，推动焦化苯上涨的可能性不是没有，目前各焦化苯厂家和苯加氢厂家的粗苯库存并不多，焦化苯的产量不大，市场货源不多，不排除小幅走高的可能。

Former Shanxi saves chemical hall hall to grow Bai Yuxiang hit the mark with a single comment: This belongs to genuine coal Jiao Shen to machine industrial catenary outspread device, market offer obtain a country to invent patent ' craft of rectify of crude benzole extraction ' and ' production of law of cooking benzene oxidation arranges anhydride ' technology of core of two big own innovation and 3 worlds the first.

原山西省化工厅厅长白玉祥一语道破：这套属于地地道道的煤焦深加工产业链延伸装置，集纳了获得国家发明专利的'粗苯萃取精馏工艺'和'焦化苯氧化法生产偏苯三酸酐'两大自主创新核心技术和3项世界第一。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。