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    Process for producing isocyanates
    31.
    发明申请
    Process for producing isocyanates 审中-公开
    异氰酸酯的制备方法

    公开(公告)号：US20070012577A1

    公开(公告)日：2007-01-18

    申请号：US11484253

    申请日：2006-07-11

    申请人： Andreas Bulan ,  Rainer Weber ,  Wolfgang Lorenz ,  Gerhard Moormann ,  Friedhelm Kamper ,  Berthold Keggenhoff

    发明人： Andreas Bulan ,  Rainer Weber ,  Wolfgang Lorenz ,  Gerhard Moormann ,  Friedhelm Kamper ,  Berthold Keggenhoff

    IPC分类号： C25B3/06

    CPC分类号： C07C263/10 ,  C07C263/20 ,  C25B1/26 ,  C07C265/14

    摘要： An isocyanate is produced by: (a) reacting chlorine with carbon monoxide to form phosgene, (b) reacting the phosgene with an organic amine to form an isocyanate and hydrogen chloride, (c) separating the isocyanate and hydrogen chloride, (d) optionally, purifying the hydrogen chloride, (e) preparing an aqueous solution of the hydrogen chloride, (f) optionally, purifying the aqueous solution of hydrogen chloride, (g) subjecting the aqueous hydrogen chloride solution to electrochemical oxidation to form chlorine, and (h) returning at least a portion of the chlorine produced in (g) to (a).

    摘要翻译： 通过以下方法制备异氰酸酯：（a）使氯与一氧化碳反应以形成光气，（b）使光气与有机胺反应形成异氰酸酯和氯化氢，（c）将异氰酸酯和氯化氢分离，（d） ，纯化氯化氢，（e）制备氯化氢水溶液，（f）任选地，纯化氯化氢水溶液，（g）使氯化氢水溶液进行电化学氧化形成氯，和（h ）将（g）至（a）中产生的氯的至少一部分返回。

    PROCESS FOR THE PREPARATION OF ISOCYANATES IN THE GAS PHASE
    33.
    发明申请
    PROCESS FOR THE PREPARATION OF ISOCYANATES IN THE GAS PHASE 有权
    在气相中制备异氰酸酯的方法

    公开(公告)号：US20100152484A1

    公开(公告)日：2010-06-17

    申请号：US12632117

    申请日：2009-12-07

    申请人： Klaus Biskup ,  Rainer Bruns ,  Wolfgang Lorenz ,  Fritz Pohl ,  Friedhelm Steffens ,  Volker Michele

    发明人： Klaus Biskup ,  Rainer Bruns ,  Wolfgang Lorenz ,  Fritz Pohl ,  Friedhelm Steffens ,  Volker Michele

    IPC分类号： C07C263/10

    CPC分类号： C07C263/10 ,  C07C265/14

    摘要： Aromatic isocyanates are produced by reacting one or more aromatic primary amines with phosgene in the gas phase. The phosgene and primary aromatic amine(s) are reacted at a temperature above the boiling temperature of the amine(s) in a reactor having a reaction space which is essentially rotationally symmetric to the direction of flow. The flow fate, averaged over the cross-section, of the reaction mixture along the axis of the essentially rotationally symmetric reaction space in the section of the reaction space in which the conversion of the amine groups into isocyanate groups is between 4 and 80 % is not more than 8 m/sec. The flow rate averaged over the cross-section of the reaction mixture along the axis of the essentially rotationally symmetric reaction space in the section of the reaction space in which the conversion of the amine groups into isocyanate groups is 4 to 80 % is always below the flow rate averaged over the cross-section at the start of this section.

    摘要翻译： 通过一种或多种芳族伯胺与气相中的光气反应制备芳族异氰酸酯。 光气和伯芳基胺在具有反应空间的反应器中在高于胺的沸点温度的温度下反应，反应空间基本上与流动方向旋转对称。 反应混合物沿着反应空间部分中基本上旋转对称的反应空间轴线的横截面平均流动，其中胺基转化为异氰酸酯基的反应空间为4-80％ 不超过8米/秒。 反应混合物的横截面上的平均流量在反应空间的基本上旋转对称的反应空间的轴上，其中胺基转化为异氰酸酯基团的部分总是低于 在本节开头的横截面上平均流量。

    Process for the production of dinitrotoluene
    35.
    发明申请
    Process for the production of dinitrotoluene 失效
    生产二硝基甲苯的方法

    公开(公告)号：US20080086017A1

    公开(公告)日：2008-04-10

    申请号：US11827502

    申请日：2007-07-12

    申请人： Fritz Pohl ,  Wolfgang Lorenz ,  Juergen Muennig ,  Bernd Pennemann ,  Gerhard Wiechers

    发明人： Fritz Pohl ,  Wolfgang Lorenz ,  Juergen Muennig ,  Bernd Pennemann ,  Gerhard Wiechers

    IPC分类号： C07C211/00

    CPC分类号： C07C201/08 ,  C07C205/06

    摘要： Dinitrotoluene is produced by nitration of toluene with nitrating acid (mixture of nitric acid and sulfuric acid) in which, in a first stage, the toluene is converted to mononitrotoluene (MNT) and then the mononitrotoluene is converted in a second stage to dinitrotoluene (DNT). Control of the weight ratio of the aqueous to organic phases, dispersion of the organic phase in the aqueous phase and use of less than 2.06 moles of nitric acid per mole of toluene are key features of this process.

    摘要翻译： 二硝基甲苯通过用硝酸（硝酸和硫酸的混合物）硝化甲苯来制备，其中在第一阶段将甲苯转化为一硝基甲苯（MNT），然后将一硝基甲苯转化为二硝基甲苯（DNT ）。 控制水相与有机相的重量比，有机相在水相中的分散和每摩尔甲苯使用小于2.06摩尔硝酸是该方法的关键特征。

    Device for making sections for specimens and specimen supports therefor
    37.
    发明授权
    Device for making sections for specimens and specimen supports therefor 失效
    用于制作标本和样品支架的装置

    公开(公告)号：US3931696A

    公开(公告)日：1976-01-13

    申请号：US447655

    申请日：1974-03-04

    申请人： Wolfgang Lorenz ,  Heinz Strubig

    发明人： Wolfgang Lorenz ,  Heinz Strubig

    IPC分类号： B24B37/10 ,  B24B37/04

    CPC分类号： B24B37/102

    摘要： Device for making sections for specimens and specimen support therefor, namely for thin sections and ground surfaces of metallographic specimens for microscopic analyses. The device includes a rotatable polishing wheel with at least two of the specimen supports disposed thereabove, and frictional drive means centrally located with respect to the wheel, wherein the specimen supports have assigned thereto at least one roller for driving a pair of adjacent supports, the latter as well as the rollers having complementary engaging peripheral surfaces that are partly cylindrical and partly conical, and means for adjusting the location and degree of interengagement between the respective surfaces.

    摘要翻译： 用于制作标本和样品支架的装置，即用于显微镜分析的金相试样的薄截面和地面。 该装置包括可旋转的抛光轮，其中至少两个样本支撑件设置在其上方，摩擦驱动装置相对于车轮居中定位，其中，样本支架已经分配有用于驱动一对相邻支撑件的至少一个辊， 后者以及具有部分圆柱形和部分圆锥形的互补啮合周边表面的辊以及用于调节相应表面之间的相互接合位置和程度的装置。

    Process for the preparation of isocyanates
    38.
    发明授权
    Process for the preparation of isocyanates 有权
    异氰酸酯的制备方法

    公开(公告)号：US08563768B2

    公开(公告)日：2013-10-22

    申请号：US13382615

    申请日：2010-06-26

    申请人： Rainer Bruns ,  Wolfgang Lorenz ,  Friedhelm Steffens ,  Herbert Stutz

    发明人： Rainer Bruns ,  Wolfgang Lorenz ,  Friedhelm Steffens ,  Herbert Stutz

    IPC分类号： C07C263/10

    CPC分类号： C07C263/10 ,  C01B32/80 ,  C07C265/14

    摘要： An isocyanate is produced by reacting an amine with a stoichiometric excess of phosgene in the gas phase. This reaction is carried out at a temperature above the amine's boiling point to obtain a liquid stream containing the isocyanate and a gas stream containing hydrogen chloride and phosgene. The gas stream containing hydrogen chloride and phosgene thus produced is separated into a gas stream containing hydrogen chloride and a liquid stream containing phosgene. At least part of the liquid stream containing phosgene is then converted to a gas stream containing phosgene which gas stream is then recycled. The gaseous phosgene stream is maintained at a higher pressure than the liquid phosgene stream.

    摘要翻译： 通过在气相中使胺与化学计量过量的光气反应来制备异氰酸酯。 该反应在高于胺沸点的温度下进行，得到含有异氰酸酯和含有氯化氢和光气的气流的液体流。 将由此产生的含有氯化氢和光气的气流分离成含有氯化氢的气流和含有光气的液体流。 然后将含有光气的液体物流的至少一部分转化成含有光气的气流，然后将气流再循环。 气态光气流保持在比液体光气流更高的压力下。

    Method for producing isocyanates in the gas phase
    39.
    发明授权
    Method for producing isocyanates in the gas phase 有权
    在气相中生产异氰酸酯的方法

    公开(公告)号：US08563767B2

    公开(公告)日：2013-10-22

    申请号：US13382609

    申请日：2010-06-26

    申请人： Rainer Bruns ,  Wolfgang Lorenz ,  Knut Sommer

    发明人： Rainer Bruns ,  Wolfgang Lorenz ,  Knut Sommer

    IPC分类号： C07C263/10

    CPC分类号： C07C263/10 ,  C07C265/14

    摘要： An isocyanate is produced by continuously reacting an amine with phosgene in the presence of an inert substance in the gas phase. In this process, a phosgene-containing stream and a stream containing both the amine and the inert substance are fed into a reactor. The molar ratio of the inert substance to the amino groups in the stream is greater than 0 but less than 45 mol %. This molar ratio changes by no more than 99% during a 20 minute period.

    摘要翻译： 异氰酸酯是通过在气相中惰性物质存在下使胺与光气连续反应生成的。 在该方法中，将含有光气的物流和含有胺和惰性物质的物流进料到反应器中。 惰性物质与物流中氨基的摩尔比大于0但小于45摩尔％。 该摩尔比在20分钟内变化不超过99％。

    PROCESS FOR THE PREPARATION OF ISOCYANATES
    40.
    发明申请
    PROCESS FOR THE PREPARATION OF ISOCYANATES 有权
    制备异氰酸酯的方法

    公开(公告)号：US20120123152A1

    公开(公告)日：2012-05-17

    申请号：US13382615

    申请日：2010-06-26

    申请人： Rainer Bruns ,  Wolfgang Lorenz ,  Friedhelm Steffens ,  Herbert Stutz

    发明人： Rainer Bruns ,  Wolfgang Lorenz ,  Friedhelm Steffens ,  Herbert Stutz

    IPC分类号： C07C263/10

    CPC分类号： C07C263/10 ,  C01B32/80 ,  C07C265/14

    摘要： An isocyanate is produced by reacting an amine with a stoichiometric excess of phosgene in the gas phase. This reaction is carried out at a temperature above the amine's boiling point to obtain a liquid stream containing the isocyanate and a gas stream containing hydrogen chloride and phosgene. The gas stream containing hydrogen chloride and phosgene thus produced is separated into a gas stream containing hydrogen chloride and a liquid stream containing phosgene. At least part of the liquid stream containing phosgene is then converted to a gas stream containing phosgene which gas stream is then recycled. The gaseous phosgene stream is maintained at a higher pressure than the liquid phosgene stream.

    摘要翻译： 通过在气相中使胺与化学计量过量的光气反应来制备异氰酸酯。 该反应在高于胺沸点的温度下进行，得到含有异氰酸酯和含有氯化氢和光气的气流的液体流。 将由此产生的含有氯化氢和光气的气流分离成含有氯化氢的气流和含有光气的液体流。 然后将含有光气的液体物流的至少一部分转化成含有光气的气流，然后将气流再循环。 气态光气流保持在比液体光气流更高的压力下。