查询词典 basic anhydride

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。

Raw material respect: This week suffers the effect that crude oil, naphtha rises in price, market confidence restores, oil is moved on benzene price; Crude benzole suffers the cooking factory reduction of output, effect that is restricted to produce, output falls, crude benzole price rises considerably and supply of goods is nervous, follow closely of cooking benzene market rises, but suitable anhydride manufacturer receives goods apiration to lose a bit.

原料方面：本周受原油、石脑油价格上涨的影响，市场信心恢复，石油苯价格上调；粗苯受焦化厂减产、限产的影响，产量下降，粗苯价格大幅上升且货源紧张，焦化苯市场紧跟上涨，但偏苯三酸酐厂家接货意愿稍弱。

House of benzene of raw material cooking does not fall high, the part arranges anhydride manufacturer to begin pair of oil benzene and hydrogenation benzene inquiry, jie is pressed with be being applied to cooking benzene manufacturer, however crude benzole goods tightens valence firm, bring about cooking benzene airborne possibility is inferior.

原料焦化苯居高不下，部分偏苯三酸酐厂家开始对石油苯及加氢苯询价，藉以对焦化苯厂家施压，然而粗苯货紧价坚，导致焦化苯空降可能性较低。

Of friendly chemical industry of Shanxi live abroad new technology machines 160 thousand tons / year crude benzole mixes 100 thousand tons / year device of the combination that arrange anhydride, first phase 80 thousand tons / year crude benzole refines device already came true to cast makings production success.

生意社8月27日讯 8月25日，CCIN记者在山西省忻州市忻府区煤化工循环经济园区采访时看到，山西侨友化工股份有限公司环保型新工艺加工16万吨/年粗苯和10万吨/年偏苯三酸酐联合装置，一期8万吨/年粗苯精制装置已实现了一次投料生产成功。

Well, we'll ship the bichromate in steel drums and the chromic anhydride in oil cans.

嗯，我们会把重铬酸盐用钢桶装，而无水铬酸则用油罐装。

Methodological furan and reaction of Diels-Alder of course of Ma Lai anhydride are generated go armour goes element of hydrogenous Chinese blister beetle, reductive below palladium charcoal catalysis into go element of armour Chinese blister beetle, with replace aniline condensation to become nitrogen - phenyl goes acyl of armour Chinese blister beetle inferior the ramification of amine.

方法呋喃和马来酐经过Diels-Alder反应生成去甲去氢斑蝥素，在钯炭催化下还原成去甲斑蝥素，和取代苯胺缩合成氮-苯基去甲斑蝥酰亚胺的衍生物。

Butane is the main raw material that produces suitable anhydride.

丁烷是生产顺酐的主要原料。

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。