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1. 发明授权

US08563768B2 Process for the preparation of isocyanates 有权
标题翻译：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。

2. 发明申请

US20120123152A1 PROCESS FOR THE PREPARATION OF ISOCYANATES 有权
标题翻译：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。

3. 发明授权

US09024057B2 Process for the preparation of isocyanates in the gas phase 有权
标题翻译：在气相中制备异氰酸酯的方法
公开(公告)号：US09024057B2
公开(公告)日：2015-05-05
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： C07C263/00 , 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。

4. 发明授权

US09365503B2 Process for the preparation of isocyanates in the gas phase 有权
标题翻译：在气相中制备异氰酸酯的方法
公开(公告)号：US09365503B2
公开(公告)日：2016-06-14
申请号：US12636925
申请日：2009-12-14
申请人： Klaus Biskup , Rainer Bruns , Wolfgang Lorenz , Lars Padeken , Bernd Pennemann , Fritz Pohl , Andreas Rausch , Friedhelm Steffens
发明人： Klaus Biskup , Rainer Bruns , Wolfgang Lorenz , Lars Padeken , Bernd Pennemann , Fritz Pohl , Andreas Rausch , Friedhelm Steffens
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C265/14
摘要： Meta-toluene-diisocyanate is produced by reacting meta-toluenediamine with phosgene in the gas phase. The meta-toluenediamine to be vaporized for use in this phosgenation process must contain less than 0.5 wt. % of toluenediamine residue, a total of less than 0.2 wt. % of ammonia and cycloaliphatic amines, and less than 20 ppm of heavy metals. At least 0.1 wt. % of the liquid meta-toluenediamine being to be vaporized must not be vaporized. This non-vaporized content of the meta-toluenediamine must not be fed to the phosgenation reactor.
摘要翻译：甲基 - 甲苯二异氰酸酯是通过间苯二甲胺与光气在气相中反应制得的。要在该光气化过程中使用的待蒸发的间甲苯二胺必须含有小于0.5wt。％的甲苯二胺残留物，总计小于0.2wt。％的氨和脂环族胺，以及小于20ppm的重金属。至少0.1wt。待蒸发的液体间甲苯二胺的％不得蒸发。间甲苯二胺的这种非汽化含量不得进料到光气化反应器中。

5. 发明申请

US20100160674A1 PROCESS FOR THE PREPARATION OF ISOCYANATES IN THE GAS PHASE 有权
标题翻译：在气相中制备异氰酸酯的方法
公开(公告)号：US20100160674A1
公开(公告)日：2010-06-24
申请号：US12636925
申请日：2009-12-14
申请人： Klaus Biskup , Rainer Bruns , Wolfgang Lorenz , Lars Padeken , Bernd Pennemann , Fritz Pohl , Andreas Rausch , Friedhelm Steffens
发明人： Klaus Biskup , Rainer Bruns , Wolfgang Lorenz , Lars Padeken , Bernd Pennemann , Fritz Pohl , Andreas Rausch , Friedhelm Steffens
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C265/14
摘要： Meta-toluene-diisocyanate is produced by reacting meta-toluenediamine with phosgene in the gas phase. The meta-toluenediamine to be vaporized for use in this phosgenation process must contain less than 0.5 wt. % of toluenediamine residue, a total of less than 0.2 wt. % of ammonia and cycloaliphatic amines, and less than 20 ppm of heavy metals. At least 0.1 wt. % of the liquid meta-toluenediamine being to be vaporized must not be vaporized. This non-vaporized content of the meta-toluenediamine must not be fed to the phosgenation reactor.
摘要翻译：甲基 - 甲苯二异氰酸酯是通过间苯二甲胺与光气在气相中反应制得的。要在该光气化过程中使用的待蒸发的间甲苯二胺必须含有小于0.5wt。％的甲苯二胺残留物，总计小于0.2wt。％的氨和脂环族胺，以及小于20ppm的重金属。至少0.1wt。待蒸发的液体间甲苯二胺的％不得蒸发。间甲苯二胺的这种非汽化含量不得进料到光气化反应器中。

6. 发明申请

US20100152484A1 PROCESS FOR THE PREPARATION OF ISOCYANATES IN THE GAS PHASE 有权
标题翻译：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。

7. 发明申请

US20090209784A1 Process for the preparation of isocyanates 有权
标题翻译：异氰酸酯的制备方法
公开(公告)号：US20090209784A1
公开(公告)日：2009-08-20
申请号：US12378508
申请日：2009-02-17
申请人： Wolfgang Lorenz , Matthias Boehm , Richard Adamson , Friedhelm Steffens , Anke Hielscher
发明人： Wolfgang Lorenz , Matthias Boehm , Richard Adamson , Friedhelm Steffens , Anke Hielscher
IPC分类号： C07C263/10
CPC分类号： C01B7/035 , C07C263/10 , C07C263/20 , C07C265/14 , C07C265/12
摘要： The present invention relates to a process for the preparation of isocyanates by reacting the appropriate amines with phosgene, condensing the gas mixture thereby obtained, stripping the liquid phase thereby obtained and returning the solvent so retained in liquid form to the reaction stage. The gaseous constituents are then purified further in an absorption process.
摘要翻译：本发明涉及通过使适当的胺与光气反应制备异氰酸酯的方法，将由此得到的气体混合物冷凝，将由此获得的液相汽提，并使溶剂保持液态返回到反应阶段。然后在吸收过程中进一步纯化气态成分。

8. 发明授权

US08063241B2 Process for the preparation of toluene-diisocyanate 失效
标题翻译：制备甲苯二异氰酸酯的方法
公开(公告)号：US08063241B2
公开(公告)日：2011-11-22
申请号：US12894290
申请日：2010-09-30
申请人： Wolfgang Lorenz , Lars Padeken , Bernd Pennemann , Friedhelm Steffens , Lothar Weismantel
发明人： Wolfgang Lorenz , Lars Padeken , Bernd Pennemann , Friedhelm Steffens , Lothar Weismantel
IPC分类号： C07C263/00 , C07C249/00
CPC分类号： C07C263/10 , C07C209/62 , C07C265/14 , C07C211/51
摘要： The present invention relates to a process for the preparation of toluene-diisocyanate. In this process, toluenediamine is reacted with phosgene to give crude toluene-diisocyanate, the crude toluene-diisocyanate is purified by distillation, the distillation residue formed during the distillation is hydrolysed at temperatures of less than 230° C. under absolute pressures of less than 30 bar, and the toluenediamine formed by this process is subsequently recycled into the reaction of toluenediamine and phosgene.
摘要翻译：本发明涉及一种制备甲苯二异氰酸酯的方法。在该方法中，甲苯二胺与光气反应得到粗甲苯二异氰酸酯，通过蒸馏纯化粗甲苯二异氰酸酯，蒸馏期间形成的蒸馏残余物在小于230℃的温度下在绝对压力小于 30巴，通过该方法形成的甲苯二胺随后再循环到甲苯二胺和光气的反应中。

9. 发明授权

US07645900B2 Process for the preparation of isocyanates 有权
标题翻译：异氰酸酯的制备方法
公开(公告)号：US07645900B2
公开(公告)日：2010-01-12
申请号：US12378508
申请日：2009-02-17
申请人： Wolfgang Lorenz , Matthias Boehm , Richard Adamson , Friedhelm Steffens , Anke Hielscher
发明人： Wolfgang Lorenz , Matthias Boehm , Richard Adamson , Friedhelm Steffens , Anke Hielscher
IPC分类号： C07C249/00
CPC分类号： C01B7/035 , C07C263/10 , C07C263/20 , C07C265/14 , C07C265/12
摘要： The present invention relates to a process for the preparation of isocyanates by reacting the appropriate amines with phosgene, condensing the gas mixture thereby obtained, stripping the liquid phase thereby obtained and returning the solvent so retained in liquid form to the reaction stage. The gaseous constituents are then purified further in an absorption process.
摘要翻译：本发明涉及通过使适当的胺与光气反应制备异氰酸酯的方法，将由此得到的气体混合物冷凝，将由此获得的液相汽提，并使溶剂保持液态返回到反应阶段。然后在吸收过程中进一步纯化气态成分。

10. 发明申请

US20080146847A1 Process for the preparation of toluenediamines by catalytic hydrogenation of dinitrotoluenes 有权
标题翻译：通过二硝基甲苯的催化氢化制备甲苯二胺的方法
公开(公告)号：US20080146847A1
公开(公告)日：2008-06-19
申请号：US12001879
申请日：2007-12-13
申请人： Fritz Pohl , Wolfgang Lorenz , Lars Padeken , Bernd Pennemann , Friedhelm Steffens , Gerhard Wiechers
发明人： Fritz Pohl , Wolfgang Lorenz , Lars Padeken , Bernd Pennemann , Friedhelm Steffens , Gerhard Wiechers
IPC分类号： C07C209/36
CPC分类号： C07C209/36 , C07C211/50
摘要： The present invention relates to a process for the preparation of toluenediamine, in which dinitrotoluene is reacted with hydrogen in the presence of a catalyst. The dinitrotoluene required by this process has a content of carbon dioxide, in either physically dissolved or chemically bonded form, of not more than 0.175 mol %, based on the molar amount of the dinitrotoluene.
摘要翻译：本发明涉及一种制备甲苯二胺的方法，其中二硝基甲苯与氢气在催化剂存在下反应。该方法所需的二硝基甲苯的物理溶解或化学键合形式的二氧化碳含量以二硝基甲苯的摩尔量计不超过0.175mol％。

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