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公开(公告)号：US20120123152A1
公开(公告)日：2012-05-17
申请号：US13382615
申请日：2010-06-26
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。
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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：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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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：US20080146834A1
公开(公告)日：2008-06-19
申请号：US12001235
申请日：2007-12-11
申请人： Fritz Pohl , Klaus Biskup , Rainer Bruns , Friedhelm Steffens , Herbert Stutz
发明人： Fritz Pohl , Klaus Biskup , Rainer Bruns , Friedhelm Steffens , Herbert Stutz
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C2601/14 , C07C265/14
摘要： An isocyanate is produced by reacting a primary amine with phosgene in the gas phase above the boiling point of the amine over an average contact time of 0.05 to 15 seconds under adiabatic conditions.
摘要翻译： 在绝热条件下，平均接触时间为0.05〜15秒，通过使伯胺与光气在高于胺沸点的气相中反应来制备异氰酸酯。
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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：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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公开(公告)号：US08030522B2
公开(公告)日：2011-10-04
申请号：US11448265
申请日：2006-06-07
IPC分类号： C07C39/02
CPC分类号： C07C209/84 , C07C209/36 , C07C263/10 , C07C211/50 , C07C265/14
摘要： The invention relates to a process for the production of toluene diisocyanate, in which the crude toluenediamine obtained from the hydrogenation is purified and then phosgenated. The purification step reduces the total amount of cyclic ketones to less than 0.1% by weight, based on 100% by weight of the toluenediamine.
摘要翻译： 本发明涉及一种生产甲苯二异氰酸酯的方法，其中从氢化得到的粗甲苯二胺被纯化然后光气化。 基于100重量％的甲苯二胺，纯化步骤将环酮的总量减少到小于0.1重量％。
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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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公开(公告)号：US07645900B2
公开(公告)日：2010-01-12
申请号：US12378508
申请日：2009-02-17
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。
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