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    • 21. 发明授权
    • Process for the preparation of anthraquinone dispersions and their use
in alkaline wood digestion processes
    • 制备蒽醌分散体的方法及其在碱性木材消化过程中的应用
    • US4717451A
    • 1988-01-05
    • US810405
    • 1985-12-18
    • Michel DevicJean-Pierre Schirmann
    • Michel DevicJean-Pierre Schirmann
    • C07C50/18C07C45/00C07C46/00C07C67/00D21C3/00D21C3/20
    • C07C46/00
    • The process of making a wet or dry dispersion containing anthraquinone suitable for use in the alkaline digestion of wood comprising cyclizing ortho-benzoylbenzoic acid at a temperature of about 150.degree. to 180.degree. C. and at an absolute pressure between about 5 and 40 millibars in the presence of between about 0.05 to 2 parts by weight of sulfuric acid, having a concentration of at least about 95%, per part by weight of ortho-benzoylbenzoic acid to form a reaction mixture containing anthraquinone, bringing the reaction mixture to a pH of at least about 7 by addition thereto at a temperature between about ambient temperature and 100.degree. C. of an aqueous solution of sodium hydroxide or potassium hydroxide containing between about 10% to 40% hydroxide by weight, and then forming a dispersion thereof and using such dispersion in the alkaline digestion of wood.
    • 制备适合用于木材碱性消化的含有蒽醌的湿或干分散体的方法,包括在约150-180℃的温度和绝对压力为约5至40毫巴之间环化邻苯甲酰基苯甲酸, 存在约0.05至2重量份的浓度为至少约95重量%的邻苯甲酰基苯甲酸的至少约95重量%的硫酸,以形成含有蒽醌的反应混合物,使反应混合物的pH为 在大约环境温度和100℃之间的温度下加入至少约7的氢氧化钠或氢氧化钾水溶液,其含有约10重量%至40重量%的氢氧化物,然后形成其分散体,并使用它们 分散在木材的碱性消化中。
    • 26. 发明授权
    • Continuous production of azines/hydrazine hydrate
    • 连续生产吖嗪/水合肼
    • US06605265B1
    • 2003-08-12
    • US08217752
    • 1994-03-25
    • Jean-Pierre SchirmannJean-Pierre PleuvryPierre Tellier
    • Jean-Pierre SchirmannJean-Pierre PleuvryPierre Tellier
    • C01B2116
    • C01B21/16C07C249/00C07C251/88Y02P20/582
    • Azines, e.g., ketazines, are continuously produced by (i) establishing a loop having an azine reaction medium circulating therein, such loop including an azine reaction zone, means for separating azine final product from the circulating reaction medium, means for heating the reaction medium and for purging water therefrom, and means for recycling heated and purged reaction medium to the azine reaction zone, (ii) introducing hydrogen peroxide, ammonia and a carbonyl compound into the circulating reaction medium in the azine reaction zone, (iii) withdrawing azine final product thus formed from the circulating reaction medium. downstream of the azine reaction zone, (iii) thereafter purging water from the circulating reaction medium to maintain the volume thereof essentially constant, (iv) heating the circulating reaction medium to a temperature of at least 130° C., (v) recycling thus heated reaction medium to the azine reaction zone, and (vi), at any point along the loop, introducing a reagent into the circulating reaction medium as to essentially maintain the equilibrium of the azine-forming reaction; the final product azines are conveniently hydrolyzed into hydrazine hydrate.
    • 通过(i)建立其中循环其中的吖嗪反应介质的环,包括吖嗪反应区的环路,用于从循环反应介质中分离吖嗪最终产物的装置,连续制备氮杂环丁烷,例如加入反应介质 和用于从其中清洗水的装置,以及用于将加热和净化的反应介质再循环到吖嗪反应区的装置,(ii)在吖嗪反应区中将过氧化氢,氨和羰基化合物引入循环反应介质中,(iii) 由循环反应介质形成的产物。 (iii)然后从循环反应介质中清洗水以使其体积保持基本恒定,(iv)将循环反应介质加热到至少130℃的温度,(v)由此回收 加热的反应介质到吖嗪反应区,和(vi)在沿着环的任何点,将试剂引入循环反应介质中,从而基本维持吖嗪形成反应的平衡; 最终产物吖嗪方便地水解成水合肼。
    • 30. 发明授权
    • Method for preparing hydrazo-bis-acetonitriles
    • 制备双氢 - 二乙腈的方法
    • US3984451A
    • 1976-10-05
    • US579548
    • 1975-05-21
    • Francis WeissJean-Pierre Schirmann
    • Francis WeissJean-Pierre Schirmann
    • C07C255/66C07C120/00
    • C07C251/88C07C255/00
    • This invention relates to a method for preparing hydrazo-bis-acetonitriles of the general formula: ##EQU1## wherein R.sub.1 and R.sub.2 have the same meaning hereinafter given, which comprises:A. i. reacting a carbonyl compound of the general formula: ##EQU2## wherein R.sub.1 and R.sub.2 have the same meaning hereinafter given, with ammonia and hydrogen peroxide in the presence of cyanogen or a nitrile of the formulaR.sub.3 (CN).sub.n (III)wherein n is an integer from 1 to 6 and R.sub.3 is an unsubstituted or substituted saturated aliphatic, acyclic or cyclic radical of from 1 to 12 carbon atoms or a benzenyl or pyridinyl radical, to form a symmetrical azine of the formula ##EQU3## ii. oxidizing a secondary alcohol of ##EQU4## wherein R.sub.1 and R.sub.2 have the same meaning hereinafter given, at a temperature and pressure which is sufficient to maintain the alcohol in the liquid phase and result in a liquid phase mixture containing the peroxidic products of the auto-oxidation of the alcohol [v] and reacting auto-oxidation products with ammonia and cyanogen or the nitrile R.sub.3 (CN).sub.n of formula (III) to form the symmetrical azine of formula (IV)b. eliminating unreacted ammonia from the medium resulting from (a);C. reacting the azine of formula (IV) contained in the ammonia-free medium resulting from (b) with at least two moles of hydrocyanic acid per mole of azine; andD. recovering the hydrazo-bis-acetonitrile of formula (I).
    • 本发明涉及通式为R1R1 || NC-C-NH-NH-C-CN(Ⅰ)| R2R2的双氢 - 二乙腈制备方法,其中R1和R2具有以下相同的含义, 包含: