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公开(公告)号：US20110021811A1
公开(公告)日：2011-01-27
申请号：US12894290
申请日：2010-09-30
IPC分类号： C07C263/10
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。
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公开(公告)号：US20080146835A1
公开(公告)日：2008-06-19
申请号：US12001905
申请日：2007-12-13
IPC分类号： C07C263/10
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。
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公开(公告)号：US08063241B2
公开(公告)日：2011-11-22
申请号：US12894290
申请日：2010-09-30
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。
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4.发明授权Process for the preparation of toluenediamines by catalytic hydrogenation of dinitrotoluenes 有权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：US07511176B2
公开(公告)日：2009-03-31
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： C07C209/00 , C07C205/00
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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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。
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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。
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7.发明申请Process for the preparation of toluenediamines by catalytic hydrogenation of dinitrotoluenes 有权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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公开(公告)号：US08399702B2
公开(公告)日：2013-03-19
申请号：US12313469
申请日：2008-11-20
申请人： Fritz Pohl , Klaus Biskup , Rainer Bruns , Friedhelm Steffens , Lars Padeken
发明人： Fritz Pohl , Klaus Biskup , Rainer Bruns , Friedhelm Steffens , Lars Padeken
IPC分类号： C07C263/00
CPC分类号： C07C263/10 , C07C265/14
摘要： Aromatic diisocyanates are produced by reacting in the gas phase the corresponding primary aromatic diamine with phosgene. The phosgene and the primary aromatic diamine are reacted within a mean residence time of from 0.05 to 15 seconds. The aromatic diamine used contains less than 0.05 mole % overall of aliphatic amine containing no keto groups, per mole of primary amino groups.
摘要翻译： 通过在气相中使相应的伯芳族二胺与光气反应来制备芳族二异氰酸酯。 光气和主芳族二胺在平均停留时间为0.05至15秒内反应。 使用的芳族二胺包含每摩尔伯氨基少于0.05摩尔％的不含酮基的脂族胺的总体。
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公开(公告)号：US20090149672A1
公开(公告)日：2009-06-11
申请号：US12313469
申请日：2008-11-20
申请人： Fritz Pohl , Klaus Biskup , Rainer Bruns , Friedhelm Steffens , Lars Padeken
发明人： Fritz Pohl , Klaus Biskup , Rainer Bruns , Friedhelm Steffens , Lars Padeken
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C265/14
摘要： Aromatic diisocyanates are produced by reacting in the gas phase the corresponding primary aromatic diamine with phosgene. The phosgene and the primary aromatic diamine are reacted within a mean residence time of from 0.05 to 15 seconds. The aromatic diamine used contains less than 0.05 mole % overall of aliphatic amine containing no keto groups, per mole of primary amino groups.
摘要翻译： 通过在气相中使相应的伯芳族二胺与光气反应来制备芳族二异氰酸酯。 光气和主芳族二胺在平均停留时间为0.05至15秒内反应。 使用的芳族二胺包含每摩尔伯氨基少于0.05摩尔％的不含酮基的脂族胺的总体。
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