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1.发明公开
公开(公告)号：EP1187808A1
公开(公告)日：2002-03-20
申请号：EP00943828.4
申请日：2000-06-16
发明人： REIF, Martin , VAN DEN ABEEL, Peter , NEVEJANS, Filip , SCHWARZ, Hans, Volkmar , PENZEL, Ulrich , SCHARR, Volker
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C08G18/7664 , C07C265/14
摘要： The invention relates to light isocyanates, to a method for producing light isocyanates and to their use in urethane compounds, especially in polyurethane, for example polyurethane foams.
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2.发明授权
公开(公告)号：EP1187808B1
公开(公告)日：2003-08-20
申请号：EP00943828.4
申请日：2000-06-16
发明人： REIF, Martin , VAN DEN ABEEL, Peter , NEVEJANS, Filip , SCHWARZ, Hans, Volkmar , PENZEL, Ulrich , SCHARR, Volker
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C08G18/7664 , C07C265/14
摘要： The invention relates to light isocyanates, to a method for producing light isocyanates and to their use in urethane compounds, especially in polyurethane, for example polyurethane foams.
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3.发明公开
公开(公告)号：EP1073628A1
公开(公告)日：2001-02-07
申请号：EP99920644.4
申请日：1999-04-12
发明人： PENZEL, Ulrich , SCHARR, Volker , STAROSTA, Dieter , BOESEL, Hilmar , STRÖFER, Eckhard , PFEFFINGER, Joachim , POPLOW, Frank , DOSCH, Jürgen , SCHWARZ, Hans, Volkmar , NÄUMANN, Fritz , VAN DEN ABEEL, Peter , JACOBS, Jan , NEVEJANS, Filip , VAN PEE, Willy
IPC分类号： C07C263/10 , C07C263/20 , C07C265/14
CPC分类号： C07C263/10 , C07C263/20 , C07C265/14
摘要： The invention relates to a method for producing mixtures consisting of diphenylmethane diisocyanates and polyphenylene-polymethylene-polyisocyanates containing a reduced amount of chlorinated secondary products and with a reduced iodine colour index. According to said method, a two-stage reaction of the corresponding mixtures of diphenylmethane-diamines and polyphenylene-polymethylene polyamines with phosgene is carried out in the presence of at least one inert organic solvent at a high temperature. When the phosgenation is complete, the excess phosgene and solvent are separated off and the product of the reaction is treated with heat. The method is characterised in that the mass ratios of phosgene to hydrogen chloride in the detention apparatus in the second stage of phosgenation are simultaneously 10-30:1 in the liquid phase and 1-10:1 in the gas phase.
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4.发明公开VERFAHREN ZUR ABTRENNUNG UND REINIGUNG VON LÖSUNGSMITTEL VON EINEM REAKTIONSGEMISCH AUS EINER ISOCYANATSYNTHESE 有权分离和清洁溶剂选自异氰酸酯合成的反应混合物的方法
公开(公告)号：EP1575908A1
公开(公告)日：2005-09-21
申请号：EP03785813.1
申请日：2003-12-13
发明人： SOHN, Martin , STROEFER, Eckhard , NEVEJANS, Filip , PENZEL, Ulrich , PALLASCH, Hans-Jürgen , VAN DEN ABEEL, Peter , DEBERDT, Filip , JACOBS, Jan D. , MACKENROTH, Wolfgang
IPC分类号： C07C263/20
CPC分类号： C07C263/10 , C07C263/20 , Y10S203/08 , C07C265/14
摘要： The invention relates to a method for producing isocyanates by reacting amines with phosgene in the presence of inert organic solvents inside a reactor and by subsequently processing the reaction mixture exiting the reactor. The invention is characterized in that the separating out of the solvent ensues in a two-step or multi-step, preferably two-step distillation process, and the solvent is separated out in a first apparatus under a pressure of 0.1 to 15 bar and in a second or other apparatuses under a pressure of 1 to 900 mbar. The condensation heat of the solvent vapor from the first apparatus is used for partially or completely vaporizing solvent in the second apparatus.
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公开(公告)号：EP1575906A1
公开(公告)日：2005-09-21
申请号：EP03789264.3
申请日：2003-12-13
发明人： SOHN, Martin , STROEFER, Eckhard , NEVEJANS, Filip , PENZEL, Ulrich , PALLASCH, Hans-Jürgen , VAN DEN ABEEL, Peter , DEBERDT, Filip , JACOBS, Jan D. , MACKENROTH, Wolfgang
IPC分类号： C07C263/10 , B01D53/70 , C01B7/07
CPC分类号： C01B7/0731 , B01D53/002 , B01D2257/2045 , B01D2257/2064 , C01B7/0712 , C01B32/80 , C07C263/10 , Y02P20/154 , C07C265/14 , C07C265/12 , C07C265/10
摘要： The invention relates to a method for partially or completely separating a substance mixture consisting of hydrogen chloride and phosgene, optionally of solvents and optionally of low-boiling fractions and inert substances such as those that normally arise during the production of isocyanates by reacting amines with phosgene. The inventive method is characterized in that a partial or complete condensation of phosgene is firstly carried out followed by a distillation or stripping inside a column for removing the hydrogen chloride from the bottom product phosgene and lastly, a washing of the top product hydrogen chloride with the process solvent for absorbing the phosgene in the process solvent is carried out. A subsequent purification by means of adsorption on activated carbon or other appropriate methods can be used for removing solvent remnants.
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6.发明授权VERFAHREN ZUR ABTRENNUNG UND REINIGUNG VON LÖSUNGSMITTEL VON EINEM REAKTIONSGEMISCH AUS EINER ISOCYANATSYNTHESE 有权分离和清洁溶剂选自异氰酸酯合成的反应混合物的方法
公开(公告)号：EP1575908B1
公开(公告)日：2006-08-09
申请号：EP03785813.1
申请日：2003-12-13
发明人： SOHN, Martin , STROEFER, Eckhard , NEVEJANS, Filip , PENZEL, Ulrich , PALLASCH, Hans-Jürgen , VAN DEN ABEEL, Peter , DEBERDT, Filip , JACOBS, Jan D. , MACKENROTH, Wolfgang
IPC分类号： C07C263/20
CPC分类号： C07C263/10 , C07C263/20 , Y10S203/08 , C07C265/14
摘要： The invention relates to a method for producing isocyanates by reacting amines with phosgene in the presence of inert organic solvents inside a reactor and by subsequently processing the reaction mixture exiting the reactor. The invention is characterized in that the separating out of the solvent ensues in a two-step or multi-step, preferably two-step distillation process, and the solvent is separated out in a first apparatus under a pressure of 0.1 to 15 bar and in a second or other apparatuses under a pressure of 1 to 900 mbar. The condensation heat of the solvent vapor from the first apparatus is used for partially or completely vaporizing solvent in the second apparatus.
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7.发明授权
公开(公告)号：EP1073628B1
公开(公告)日：2003-10-01
申请号：EP99920644.4
申请日：1999-04-12
发明人： PENZEL, Ulrich , SCHARR, Volker , STAROSTA, Dieter , BOESEL, Hilmar , STRÖFER, Eckhard , PFEFFINGER, Joachim , POPLOW, Frank , DOSCH, Jürgen , SCHWARZ, Hans, Volkmar , NÄUMANN, Fritz , VAN DEN ABEEL, Peter , JACOBS, Jan , NEVEJANS, Filip , VAN PEE, Willy
IPC分类号： C07C263/10 , C07C263/20 , C07C265/14
CPC分类号： C07C263/10 , C07C263/20 , C07C265/14
摘要： The invention relates to a method for producing mixtures consisting of diphenylmethane diisocyanates and polyphenylene-polymethylene-polyisocyanates containing a reduced amount of chlorinated secondary products and with a reduced iodine colour index. According to said method, a two-stage reaction of the corresponding mixtures of diphenylmethane-diamines and polyphenylene-polymethylene polyamines with phosgene is carried out in the presence of at least one inert organic solvent at a high temperature. When the phosgenation is complete, the excess phosgene and solvent are separated off and the product of the reaction is treated with heat. The method is characterised in that the mass ratios of phosgene to hydrogen chloride in the detention apparatus in the second stage of phosgenation are simultaneously 10-30:1 in the liquid phase and 1-10:1 in the gas phase.
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