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公开(公告)号：EP1646604B1
公开(公告)日：2008-01-02
申请号：EP04740321.7
申请日：2004-06-25
发明人： STEINBRENNER, Ulrich , STROEFER, Eckhard , SOHN, Martin , QUASCHNING, Veronika , MÖHWALD, Helmut , THIELE, Kai , DEBERDT, Filip , JACOBS, Jan, D. , PINKOS, Rolf
IPC分类号： C07C209/78 , C07C209/86 , C07C211/50
CPC分类号： C07C209/86 , C07C209/78 , C07C211/50
摘要： The invention relates to a method for the production of diaminodiarylmethanes, comprising the steps: a) reaction of an aromatic amine with an agent liberating methylene groups in the presence of homogenous acid catalysts, b) removal of the homogenous acid catalyst from the reaction product, c) work-up and purification of the reaction product, whereby the homogenous acid catalyst is removed from the reaction mixture by adsorption on a solid adsorption agent.
摘要翻译： 本发明涉及生产二氨基二芳基甲烷的方法，该方法包括以下步骤：a）在均相酸催化剂存在下，芳族胺与释放亚甲基的试剂反应，b）从反应产物中除去均相酸催化剂， c）反应产物的处理和纯化，由此通过吸附在固体吸附剂上从反应混合物中除去均相酸催化剂。
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2.发明公开
公开(公告)号：EP1805162A1
公开(公告)日：2007-07-11
申请号：EP05798084.9
申请日：2005-10-20
IPC分类号： C07D323/06
CPC分类号： C07D323/06
摘要： The invention relates to a trioxane production method comprising the following stages: catalysed reaction in an acid medium of an aqueous highly concentrated formaldehyde solution (1) in a reactor (R) for obtaining a trioxane/formaldehyde/water mixture (2) (stage I); distillation of said trioxane/formaldehyde/water mixture (2) of the stage I for obtaining a raw trioxane as a head flow (3) (stage II), distillation treatment of the raw dioxane of the stage II in one or several stages for obtaining a pure dioxane (8), wherein a side aqueous flow (4) is deducted during the stage II.
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3.发明公开VERFAHREN ZUR ABTRENNUNG VON TRIOXAN AUS EINEM TRIOXAN/FORMALDEHYD/WASSER-GEMISCH 有权方法分离三恶烷的三恶烷/甲醛/水混合物
公开(公告)号：EP1699537A1
公开(公告)日：2006-09-13
申请号：EP04804129.7
申请日：2004-12-21
发明人： LANG, Neven , STROEFER, Eckhard , STAMMER, Achim , FRIESE, Thorsten , SIEGERT, Markus , OTT, Michael , HASSE, Hans , GRÜTZNER, Thomas , BLAGOV, Sergej
IPC分类号： B01D3/36 , C07D323/06 , B01D3/14
CPC分类号： C07D323/06 , B01D3/146 , B01D3/36 , Y02P20/127
摘要： The invention relates to a method for separating trioxane from a mixture containing formaldehyde, trioxane and water. According to said method: the mixture (1) is distilled in a first distillation stage (7) at a pressure of between 0.1 and 2 bar to obtain a stream (8) containing formaldehyde and a stream (9) containing predominantly trioxane, in addition to water and formaldehyde; the stream (9) is mixed with a recycling stream (19) containing predominantly trioxane, in addition to water and formaldehyde to form a stream (10) containing predominantly trioxane, in addition to water and formaldehyde; the stream (10) is then distilled in a second distillation stage (14) at a pressure of between 0.2 and 10 bar, optionally after the separation of low-boilers from the stream (9) or (10) in an additional distillation stage (11). The pressure in the second distillation stage (14) is at least 0.1 bar higher than the pressure in the first distillation stage (7). Said distillation produces a stream (15) consisting of trioxane and a stream (16) containing predominantly trioxane, in addition to water and formaldehyde. The stream (16) is then distilled in a third distillation stage (17) at a pressure of between 0.1 and 4 bar, to obtain a stream (18) containing predominantly water, in addition to formaldehyde and the recycling stream (19) containing predominantly trioxane, in addition to water and formaldehyde. The resultant stream (18) is optionally distilled in a fourth distillation stage (20), to obtain a stream (21) containing predominantly water and a stream (22) containing predominantly formaldehyde.
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4.发明公开
公开(公告)号：EP1606241A2
公开(公告)日：2005-12-21
申请号：EP04717071.7
申请日：2004-03-04
发明人： STROEFER, Eckhard , LANG, Neven , HASSE, Hans , GRUETZNER, Thomas , OTT, Michael
IPC分类号： C07C47/058
CPC分类号： C07C45/002 , C07C45/82 , C07C47/04
摘要： A method for the production of highly concentrated formaldehyde solutions containing ≥ 50 wt. % CH2O from an aqueous formaldehyde solution having a lower CH2O content by evaporating part of said solution (partial evaporation), wherein the aqueous formaldehyde solution is heated to an evaporation temperature T wherein water becomes enriched in a gaseous phase in relation to the liquid phase and the formed gas phase is continuously or discontinuously removed. For the evaporation temperature T: T [ °C]
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公开(公告)号：EP1606240A1
公开(公告)日：2005-12-21
申请号：EP04716587.3
申请日：2004-03-03
发明人： STROEFER, Eckhard , LANG, Neven , STEINBRENNER, Ulrich , HASSE, Hans , OTT, Michael , GRÜTZNER, Thomas
IPC分类号： C07C45/83 , C07C47/04 , C07C47/058
CPC分类号： C07C45/002 , C07C45/82 , C07C47/04
摘要： The invention relates to a method for producing a highly concentrated, gaseous formaldehyde with a molar ratio CH2O: H2O of = 0.6, from an aqueous formaldehyde solution, by evaporating at least part of said solution, the aqueous formaldehyde solution being heated to an evaporation temperature T and the gas phase formed being drawn off. According to the invention, the following formula holds good for the evaporation temperature T: T [ °C] = T'min [ °C] wherein T'min(c) = A + B x (c/100) + C x (c/100)2 + D x (c/100)3 and A = + 68.759, B = + 124.77, C = - 12.851, and D = - 10.095, c being the actual CH2O content of the aqueous formaldehyde solution during the evaporation in wt. %, amounting to between 20 and 99 wt. %.
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6.发明公开
公开(公告)号：EP1575905A1
公开(公告)日：2005-09-21
申请号：EP03789263.5
申请日：2003-12-13
发明人： SOHN, Martin , STROEFER, Eckhard , NEVEJANS, Filip , PENZEL, Ulrich , PALLASCH, Hans-Jürgen , SANDER, Michael , SCHWARZ, Hans, Volkmar , MACKENROTH, Wolfgang
IPC分类号： C07C263/10 , C07C263/20 , C07C265/14
CPC分类号： C07C263/20 , C07C263/10 , C07C265/14
摘要： The invention relates to a method for producing isocyanates by reacting amines with phosgene inside a reactor followed by separating the isocyanate out from the reaction mixture exiting the reactor and purifying this isocyanate. The invention is characterized in that the isocyanate is separated out and purified in a column with a top pressure of 1 to 950 mbar, preferably 5 to 50 mbar, particularly preferred 10 to 20 mbar, with a bottom temperature of 90 to 250 °C, preferably 120 to 170 °C, particularly preferred 130 to 150 °C, and that the pure isocyanate flow is withdrawn in liquid or gaseous form, preferably in a side-stream of the column.
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公开(公告)号：EP1532107A1
公开(公告)日：2005-05-25
申请号：EP03797208.0
申请日：2003-07-24
发明人： WÖLFERT, Andreas , MÜLLER, Christian , STROEFER, Eckhard , WEBER, Markus , PFEFFINGER, Joachim , KNÖSCHE, Carsten
IPC分类号： C07C263/10
CPC分类号： C07C263/10 , C07C265/14
摘要： The invention relates to a method for producing aromatic diisocyanates by reacting phosgene with diamines in the gas phase. The reaction is carried out in a reaction chamber at moderate pressures, i.e. the pressure in said reaction chamber is more than 3 bars and less than 20 bars.
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公开(公告)号：EP1812380A1
公开(公告)日：2007-08-01
申请号：EP05794877.0
申请日：2005-10-22
IPC分类号： C07C263/10 , C07C265/12 , C07C265/14
CPC分类号： C07C263/10 , C07C265/14
摘要： The invention relates to a method for producing isocyanates by reacting the corresponding amines with phosgene in the presence of solvents. Said method is characterised in that compounds forming salt melts with hydrogen chloride are used as solvents.
摘要翻译： 本发明涉及通过使相应的胺与光气在溶剂存在下反应来生产异氰酸酯的方法。 所述方法的特征在于使用与氯化氢形成盐熔化的化合物作为溶剂。
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公开(公告)号：EP1781634A1
公开(公告)日：2007-05-09
申请号：EP05775120.8
申请日：2005-08-18
IPC分类号： C07D323/06 , B01D3/14
CPC分类号： B01D3/146 , B01D3/141 , C07D323/06
摘要： The invention relates to a method for the separation by distillation of pure trioxane from a supply flow (I) containing trioxane in a mass proportion of at least 50 wt. % in relation to the total weight of the supply flow (I), in addition to formaldehyde and water. Said method is characterised in that the supply flow (I) and another flow (II) which contains water but does not contain any constituents foreign to the supply flow, are supplied to a dividing wall column (TWK1) comprising an essentially perpendicular dividing wall TW which divides the inside of the column into a supply region (A1), a delivery region (B1), an upper common column region (C1), and a lower common column region (D1). A bottom flow (III) containing pure trioxane and a lateral flow (IV) containing pure water are removed from the delivery region (B1), at the first dividing wall column (TWK1).
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10.发明公开
公开(公告)号：EP1699734A1
公开(公告)日：2006-09-13
申请号：EP04804265.9
申请日：2004-12-23
CPC分类号： B01J8/0257 , B01J8/025 , B01J8/0285 , B01J8/0453 , B01J8/0496 , B01J2208/0015 , B01J2219/0002 , C01B7/04 , F28D9/0031 , F28D9/0093 , F28F2250/102
摘要： The invention relates to a method for the production of chlorine by means of gas phase oxidation of hydrogen chlorine, comprising a gas flow containing molecular oxygen in the presence of a solid bed catalyst. The invention is characterised in that the method is carried out in a reactor (1) comprising thermal sheet-metal plates (2) which are arranged at a distance from each other and in a longitudinal direction of the reactor (1). Said thermal sheet-metal plates can be cross-flown by a heat carrier, comprising supply devices and removal devices (3, 4) for the heat carrier in order to form the thermal sheet-metal plates (2), in addition to gaps (5) which are arranged between the thermal sheet-metal plates (2) and which are filled with the solid bed catalyst and are guided into the gas flow containing the hydrogen chloride and the molecular oxygen.
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