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    Process for producing the magnesium salt of 3-nitro-naphthalene-1,5-disulfonic acid (nitro-Armstrong's acid)
    2.
    发明授权
    Process for producing the magnesium salt of 3-nitro-naphthalene-1,5-disulfonic acid (nitro-Armstrong's acid) 失效
    制备3-硝基 - 萘-1,5-二磺酸镁盐（硝基 - 阿姆斯壮酸）的方法

    公开(公告)号：US4348334A

    公开(公告)日：1982-09-07

    申请号：US113412

    申请日：1980-01-18

    申请人： Bernhard Albrecht ,  Hans Frey ,  Vinzenz Habermacher ,  Horst Behre ,  Lutz Kienitz ,  Wolfgang Schenk ,  Guido Steffan ,  Axel Vogel

    发明人： Bernhard Albrecht ,  Hans Frey ,  Vinzenz Habermacher ,  Horst Behre ,  Lutz Kienitz ,  Wolfgang Schenk ,  Guido Steffan ,  Axel Vogel

    IPC分类号： C07C309/40 ,  C07C67/00 ,  C07C301/00 ,  C07C303/06 ,  C07C303/22 ,  C07C303/32 ,  C07C143/55

    CPC分类号： C07C309/00

    摘要： A process for producing the magnesium salt of 3-nitro-naphthalene-1,5-disulfonic acid by sulfonating naphthalene, nitrating the sulfonation product, and separating the pure magnesium salt of 3-nitronaphthalene-1,5-disulfonic acid, which process comprises:(a) sulfonating naphthalene with liquid SO.sub.3 in the presence of an inert organic solvent at temperatures between -40.degree. and +20.degree. C.;(b) adding to the reaction mixture obtained a mixture consisting of about equal parts of 100% sulfuric acid and fully reacted crude nitration mixture from nitration of a previous nitration charge, separating from the resulting two-phase system the upper organic solvent phase by decanting, and removing from the Armstrong's acid anhydride acid slurry the remainder of organic solvent by distillation, or removing it during or after subsequent nitration, subsequently adding to the residue the amount of nitric acid required for nitration, and then nitrating;(c) adding then firstly water and afterwards, in the absence of the inert organic solvent, at 90.degree. to 120.degree. C., a compound releasing magnesium ions, the amount being such that, per mol of 3-nitronaphthalene-1,5-disulfonic acid, 1.1 to 1.3 mols of magnesium ions are added, and a sulfuric acid concentration of between 40 and 60 percent by weight (relative to the sulfuric acid and water) is maintained; and(d) separating the crystallized magnesium salt of 3-nitronaphthalene-1,5-disulfonic acid at a temperature of between 20.degree. and 70.degree. C., and subsequently optionally washing it with a maximum of 60 percent by weight of sulfuric acid and/or water, and optionally drying the product.

    摘要翻译： 通过磺化萘，硝化磺化产物和分离3-硝基萘-1,5-二磺酸的纯镁盐来生产3-硝基 - 萘-1,5-二磺酸的镁盐的方法，该方法包括 ：（a）在-40℃〜+ 20℃的温度下，在惰性有机溶剂的存在下，用液态SO 3磺化萘。 （b）向反应混合物中加入由约等量的100％硫酸组成的混合物和来自先前硝化装置的硝化的完全反应的粗硝化混合物，通过倾析从所得两相体系中分离出上部有机溶剂相 ，并通过蒸馏从阿姆斯壮的酸酐酸浆中除去剩余的有机溶剂，或者在后续硝化过程中或之后将其除去，随后向残余物中加入硝化所需的硝酸量，然后硝化; （c）然后首先加入水，然后在不存在惰性有机溶剂的情况下，在90〜120℃下，加入释放镁离子的化合物，其用量为每摩尔3-硝基萘-1,5 二磺酸，加入1.1〜1.3摩尔的镁离子，硫酸浓度保持在40〜60重量％之间（相对于硫酸和水）; 和（d）在20℃至70℃的温度下分离3-硝基萘-1,5-二磺酸的结晶镁盐，随后任选地用最多60重量％的硫酸洗涤， /或水，并任选地干燥产品。

    Process for isolating H acid and K acid
    7.
    发明授权
    Process for isolating H acid and K acid 失效
    H酸和K酸分离方法

    公开(公告)号：US4426334A

    公开(公告)日：1984-01-17

    申请号：US368194

    申请日：1982-04-14

    申请人： Horst Behre ,  Heinz U. Blank ,  Otto Lindner ,  Willi Schossler

    发明人： Horst Behre ,  Heinz U. Blank ,  Otto Lindner ,  Willi Schossler

    IPC分类号： C07C309/50 ,  C07C67/00 ,  C07C301/00 ,  C07C303/44 ,  C09B29/30 ,  C07C143/48

    CPC分类号： C07C303/44

    摘要： The invention relates to a process for isolating H acid and K acid in the form of their monoalkali metal salts from acid aqueous solutions which contain these two acids and alkali metal ions and may contain other aminonaphtholdisulphonic acids, in which process H acid monoalkali metal salts are precipitated at elevated temperatures from solutions which contain not only sodium ions but also potassium ions and then precipitating K acid monoalkali metal salts by cooling down the filtrate obtained after separating off the H acid monoalkali metal salts.

    摘要翻译： 本发明涉及一种从含有这两种酸和碱金属离子的酸性水溶液中分离其单碱金属盐形式的H酸和K酸的方法，并且可以含有其它氨基十氢四氢呋喃磺酸，其中H酸单碱金属盐为 在不仅含钠离子和钾离子的溶液中在高温下沉淀，然后通过冷却分离H酸单碱金属盐后得到的滤液而沉淀K酸单碱金属盐。

    Process for the preparation of 1-amino-8-naphthol-3,6-disulphonic acid (H-acid)
    8.
    发明授权
    Process for the preparation of 1-amino-8-naphthol-3,6-disulphonic acid (H-acid) 失效
    制备1-氨基-8-萘酚-3,6-二磺酸（H酸）的方法

    公开(公告)号：US4178308A

    公开(公告)日：1979-12-11

    申请号：US920033

    申请日：1978-06-28

    申请人： Willi Schossler ,  Horst Behre ,  Rolf Putter

    发明人： Willi Schossler ,  Horst Behre ,  Rolf Putter

    IPC分类号： C07C309/50 ,  C07C67/00 ,  C07C301/00 ,  C07C303/22 ,  C07C303/32 ,  C22B34/12 ,  H03D13/00 ,  C07C143/66

    CPC分类号： C22B34/12

    摘要： A process has been invented for the preparation of a mono-alkali metal salt of 1-amino-8-naphthol-3,6-disulphonic acid comprising reacting 1-naphthylamine-3,6,8-trisulphonic acid and/or a salt thereof and/or a naphthylamine-trisulphonic acid isomer mixture and/or salt thereof with an alkali metal hydroxide solution at elevated pressure and elevated temperature and in the presence of an alcohol or alcoholate, and separating out the mono-alkali metal salt by acidification. The process results in the procurement of higher yields of the desired product and in the formation of less by-products.

    摘要翻译： 已经发明了一种制备1-氨基-8-萘酚-3,6-二磺酸的单碱金属盐的方法，其包括使1-萘胺-3,6,8-三磺酸和/或其盐 和/或萘胺 - 三磺酸异构体混合物和/或其盐与碱金属氢氧化物溶液在升高的压力和升高的温度下，在醇或醇化物的存在下，通过酸化分离出单碱金属盐。 该过程导致采购更高产量的所需产品和形成较少的副产物。

    Method for preparing methyl carbazate
    10.
    发明授权
    Method for preparing methyl carbazate 有权
    制备甲基肼基甲酸酯的方法

    公开(公告)号：US06465678B1

    公开(公告)日：2002-10-15

    申请号：US09889813

    申请日：2001-07-20

    申请人： Lars Rodefeld ,  Horst Behre ,  Alexander Klausener ,  Robert Söllner

    发明人： Lars Rodefeld ,  Horst Behre ,  Alexander Klausener ,  Robert Söllner

    IPC分类号： C07C22900

    CPC分类号： C07C281/02

    摘要： Methyl carbazate which is particularly pure and has a particularly low tendency toward discoloration is obtained from hydrazine and dimethyl carbonate if the two reactants are metered simultaneously into an initially introduced first solvent at from −20 to +30° C., the solvent and low-boiling components are then distilled off under reduced pressure, and then either a second solvent is added to the crude methyl carbazate present and this solvent is distilled off under reduced pressure or an inert gas is passed through the crude methyl carbazate present.

    摘要翻译： 如果两个反应物在-20至+ 30℃下同时计量到初始引入的第一溶剂中，则可从肼和碳酸二甲酯得到特别纯的具有特别低的变色趋势的肼基甲酸甲酯， 然后在减压下蒸馏沸腾的组分，然后将第二溶剂加入到存在的粗甲基肼基甲酸酯中，并在减压下蒸馏掉该溶剂，或使惰性气体通过存在的粗甲基肼基甲酸酯。