Hydrolysate of epichlorohydrin in alkali aqueous solution was studied, mole ratio of epichlorohydrin to water, temperature and time were investigated in detail, the mechanism was discussed in this paper.

研究了環(huán)氧氯丙烷在堿性水溶液中的水解產(chǎn)物，考察了原料摩爾配比一级片在线观看、反應(yīng)溫度和反應(yīng)時(shí)間等對水解率的影響中国精品jizzjizz，討論了其水解機(jī)理。

The proportion of the phase transfer catalyst and tertiary amine are usually in the range of about 1-5 and about 0.01-5.0 mole percent, respectively, based on total dihydroxyaromatic compound and dicarboxylic acid employed. In the second phosgenation step, the pH is raised to at least 10 and a stoichiometric phosgene excess of at least 5% is introduced.

相轉(zhuǎn)移催化劑和叔胺的比例以二羥基芳族化合物和二羧酸的總量為基礎(chǔ)計(jì)通常分別在約1―5和0.01―5.0摩爾百分?jǐn)?shù)的范圍內(nèi)影音先锋今日资源，在第二步光氣化步驟中成人日韩欧美一区二区免费，pH值升高到至少約10，并導(dǎo)入超過化學(xué)計(jì)量約至少5wt％的光氣日韩三级视频免费。

Through the analysis of thermodynamics, relationship between equilibrium phase of thihydrate and boehmite with temperature and caustic mole ratio in the system of sodium aluminate solution was determined.

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Through the analysis of thermodynamics, relationship between equilibrium phase of thihydrate and boehmite with temperature and caustic mole ratio in the system of sodium aluminate solution was determined.

通過熱力學(xué)分析確定了鋁酸鈉溶液體系中三水鋁石久久影院无码专区人妻、一水軟鋁石平衡固相與溫度和苛性比之間的關(guān)系免费网站看AⅤ片在线观看。

From this part, we should understand the course which people have realized the function of consumption in east and west economics, especially the long-time discuss on the relation of consumption and production. In the west economics, there are Adam Smith, David Ricardo, Boisguilbert, Quesnay, Turgot, Sismondi and so on in the classical economics; Say, Malthus in the philistine plutonomy; Marshall, Pigou, Veblen, Pareto and so on in imperialist period; Keynes, Rostov, Mole and so on in the modern west economics.

西方經(jīng)濟(jì)學(xué)中關(guān)于消費(fèi)的思想從歷史來看，主要包括：古典經(jīng)濟(jì)學(xué)中亞當(dāng)·斯密wwwav免费在线、李嘉圖在线观看人成网视频、布阿貝爾吉爾黄色网页免费看、魁奈等人的消費(fèi)思想和西斯蒙第的&消費(fèi)居先論&；庸俗政治經(jīng)濟(jì)學(xué)中法國的薩伊久久久久久九九99精品伊人、英國的馬爾薩斯等人的消費(fèi)思想菠萝在线成人网站；帝國主義歷史時(shí)期馬歇爾、凡勃倫等人的消費(fèi)思想日韩综合在线草草；現(xiàn)代西方經(jīng)濟(jì)學(xué)中凱恩斯高清性色生活片mmm、羅斯托、莫爾色八A级在线观看、加爾布雷茨等人的消費(fèi)思想农村老熟女乱子视频。

The optimum conditions for this reaction were confirmed: the mole ratios of the Lewis base and AlCl〓 with the electron-rich aromatic monomer are 1. 2 and 3. 4, respectively; 1, 2-dichloride ethane is the most suitable solvent in this reaction; The solution of the two reactants must be added slowly to a large amount of solvent containing catalyst under pseudo-high dilution conditions; The Lewis base, such as NMP, DMF are applicable in this reaction system.

在此理論的指導(dǎo)下，通過對單體結(jié)構(gòu)的模擬国产精品久久九九免费视频，高選擇性地合成了一種新型結(jié)構(gòu)的芳香環(huán)狀聚硫酯二聚體，對其結(jié)構(gòu)進(jìn)行了精確的表征超碰巨乳伊人，在不同溶劑中得到了該環(huán)狀二聚體的單晶日本强奸乱伦中文字幕，單晶X-ray衍射表明該二聚體為環(huán)張力極小的大環(huán)化合物。