公开(公告)号：EP1926707B1

公开(公告)日：2012-07-04

申请号：EP06793237.6

申请日：2006-09-05

Applicant: BASF SE

Inventor： KLÖTZER, Matthias ,  STROEFER, Eckhard ,  KRASE, Volker ,  SCHMIDT, Andreas ,  SCHERBEL, Peter

IPC: C07C265/14 ,  C07C263/04 ,  C07C269/04

CPC classification number: C07C263/04 ,  C07C269/04 ,  C07C271/12 ,  C07C265/14

Abstract: The invention provides a multistage process for continuously preparing organic, distillable polyisocyanates, preferably diisocyanates, more preferably aliphatic or cycloaliphatic diisocyanates, by reacting the corresponding organic polyamines with carbonic acid derivatives and alcohols to low molecular mass monomeric polyurethanes, and thermally cleaving said polyurethanes, in which at defined reaction stages the polyisocyanates prepared and unusable residues are separated off, and reusable by products and intermediates are recycled to upstream stages.

公开(公告)号：EP1866239B1

公开(公告)日：2012-01-18

申请号：EP06743192.4

申请日：2006-02-20

Applicant: BASF SE

Inventor： SESING, Martin ,  DIEFENBACHER, Armin ,  VOSS, Hartwig ,  SCHUBERT, Olga ,  SEIDEMANN, Lothar ,  KARCHES, Martin ,  GRASSLER, Thomas ,  STROEFER, Eckhard

IPC: C01B7/04

CPC classification number: C01B7/075 ,  C01B7/04 ,  C01B7/0743

Abstract: The invention concerns a method for producing chlorine and a hydrochloric gas including the following steps: a) supplying via a stream containing hydrochloric gas (a1) and a stream containing oxygen (a2) an oxidation zone and a hydrochloric gas catalytic oxidation with chlorine, a stream of gaseous product (a3) containing chlorine, water, oxygen, carbon dioxide, and the inert gases obtained; b) cooling the stream of gaseous products (a3) and separating the water from the hydrochloric gas in the form of hydrochloric acid, a gas stream (b) containing chlorine, water, oxygen, carbon dioxide, and the inert gases still remaining; c) optionally drying the gas stream (b), and obtaining a gas stream (c) substantially water-free, containing chlorine, oxygen, carbon dioxide and inert gases; d) liquefying at least partly the gas stream (c) and a return stream (f1) rich in chlorine, containing chlorine, oxygen, carbon dioxide through thickening and cooling, a partly liquefied stream (d) being preserved; e) gas-liquid separation of the stream (d) into a gas stream (e1) containing chlorine, oxygen, carbon dioxide, and inert gases and into a liquid stream (e2) containing chlorine, oxygen, and carbon dioxide; f) introducing at least part of the gas stream (e1) into a unit with membrane and separating a return stream (f1) rich in chlorine and a gas flow (f2) poor in chlorine, containing chlorine, oxygen, carbon dioxide, via a separation by the membrane and reintroducing the return flux (f1) rich in chlorine in step d); g) separating the liquid stream (e2) by distillation into a stream of chlorine (g1) and a stream (g2) comprising substantially oxygen and carbon dioxide.

公开(公告)号：EP2367783A1

公开(公告)日：2011-09-28

申请号：EP09752383.1

申请日：2009-11-18

Applicant: BASF SE

Inventor： BREUNINGER, Daniel ,  ADAM, Johannes ,  SCHELLING, Heiner ,  STROEFER, Eckhard ,  KRÄMER, Markus ,  EIERMANN, Matthias ,  THIELE, Kai ,  ZOELLINGER, Michael ,  PINKOS, Rolf

IPC: C07C263/10 ,  C07C265/14 ,  C07C209/90

CPC classification number: C07C263/10 ,  C07C265/14

Abstract: The invention relates to a method for producing an isocyanate, comprising hydrogenation of an amimne-ciontaining mixture (Gi) in the presence of a copper containing hydrogenation catalyst to give a mixture (Gii) containing the amine and reacting the mixture (Gii) with phosgene to give a mixture (Gii) containing the isocyanate. The invention further relates to the isocyanate which may be produced by said method.

公开(公告)号：EP2280939A2

公开(公告)日：2011-02-09

申请号：EP09731507.1

申请日：2009-04-09

Applicant: BASF SE

Inventor： BOCK, Michael ,  SESING, Martin ,  STROEFER, Eckhard

IPC: C07C263/10 ,  C07C209/84

CPC classification number: C07C263/10 ,  C07C209/62 ,  C07C209/86 ,  C07C265/14 ,  C07C211/51

Abstract: The object of the invention is a method for treating residues from the production of isocyanates, comprising the steps of a) hydrolyzing the residues with water b) feeding the reaction product from step a) to a mixer with a heat transfer surface, c) separating amine and water from the discharge of step b), d) separating water from amine.

公开(公告)号：EP2234996A1

公开(公告)日：2010-10-06

申请号：EP08863030.6

申请日：2008-12-11

Applicant: BASF SE

Inventor： SIEGERT, Markus ,  LANG, Neven ,  THIEL, Joachim ,  STROEFER, Eckhard ,  SIGWART, Christoph

IPC: C07D323/06

CPC classification number: C07D323/06 ,  Y02P20/127

Abstract: Disclosed is a method for producing crude trioxane (1) at a concentration ranging from 50 to 70 percent by weight of trioxane by trimerizing formaldehyde from an aqueous formaldehyde solution (2) in the presence of an acid catalyst (3) and concentrating, by distillation, the trioxane of the reaction mixture from the trimerization process. Said method is characterized in that the trimerization process of the formaldehyde and the concentration of the trioxane of the reaction mixture from the trimerization process are carried out in a single column (K) which is separated into a bottom column zone (A) and a top column zone (B) by means of a horizontal baffle plate (T), the bottom column zone (A) and the top column zone (B) being connected using an external steam pipe and an external liquid pipe. Furthermore, a reactive distillation process in which the formaldehyde is trimerized to obtain trioxane and the trioxane in the reaction mixture is concentrated to the solubility limit of the formaldehyde is carried out in the bottom column zone (A) at a pressure ranging from 1 to 5 bar. Additionally, a distillation process in which the trioxane is concentrated to crude trioxane having a concentration ranging from 50 to 75 percent by weight is carried out in the top column zone (B) at a pressure ranging from 200 to 900 mbar.

公开(公告)号：EP1606240B1

公开(公告)日：2010-10-06

申请号：EP04716587.3

申请日：2004-03-03

Applicant: BASF SE

Inventor： STROEFER, Eckhard ,  LANG, Neven ,  STEINBRENNER, Ulrich ,  HASSE, Hans ,  OTT, Michael ,  GRÜTZNER, Thomas

IPC: C07C45/83 ,  C07C47/04 ,  C07C47/058

CPC classification number: C07C45/002 ,  C07C45/82 ,  C07C47/04

Abstract: 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. %.

公开(公告)号：EP1699537B1

公开(公告)日：2010-09-22

申请号：EP04804129.7

申请日：2004-12-21

Applicant: BASF SE

Inventor： LANG, Neven ,  STROEFER, Eckhard ,  STAMMER, Achim ,  FRIESE, Thorsten ,  SIEGERT, Markus ,  OTT, Michael ,  HASSE, Hans ,  GRÜTZNER, Thomas ,  BLAGOV, Sergej

IPC: B01D3/36 ,  C07D323/06 ,  B01D3/14

CPC classification number: C07D323/06 ,  B01D3/146 ,  B01D3/36 ,  Y02P20/127

Abstract: 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.

公开(公告)号：EP2142526A1

公开(公告)日：2010-01-13

申请号：EP08718289.5

申请日：2008-03-27

Applicant: BASF SE

Inventor： STROEFER, Eckhard ,  LANG, Neven ,  SIEGERT, Markus ,  HASSE, Hans

IPC: C07D323/06

CPC classification number: C07D323/06

Abstract: The invention relates to a method for producing trioxane from trioxymethylene glycol dimethyl ether (POMD- MEn=3) by reacting trioxymethylene glycol dimethyl ether in the presence of an acidic catalyst and subsequently processing the reaction mixture by distillation. The method comprises the following steps: a) feeding trioxymethylene glycol dimethyl ether (POMDMEn=3) or a mixture containing trioxymethylene glycol dimethyl ether to a reactor and reacting the substance in the presence of an acidic catalyst to give a mixture (a) containing trioxane, formaldehyde, water, methylene glycol (MG), polyoxymethylene glycols (MGn>1), methanol, hemiformals (HF), methylal (POMDMEn=1) and polyoxymethylene glycol dimethyl ether (POMDMEn>1); b) separating the reaction mixture (a) by distillation to give a low-boiling fraction (b1) containing trioxane, formaldehyde, water, methylene glycol, methanol, hemiformal (HFn=1), methylal and dioxymethylene glycol dimethyl ether (POMDMEn=2) and a high-boiling fraction (b2) containing trioxane, polyoxymethylene glycols (MGn>1), hemiformals (HFn>1) and polyoxymethylene glycol dimethyl ether (POMDMEn>2); c) separating the high-boiling fraction (b2) by distillation to give a low-boiling fraction (c1) containing trioxane and a high-boiling fraction (c2) containing polyoxymethylene glycols (MGn>1), hemiformals (HFn>1) and polyoxymethylene glycol dimethyl ether (POMDMEn=2).

Abstract translation: 本发明涉及一种由三聚甲醛乙二醇二甲醚（POMD-MEn = 3）通过使三聚甲醛乙二醇二甲醚在酸性催化剂存在下反应并随后通过蒸馏处理反应混合物来生产三聚甲醛的方法。 该方法包括以下步骤：a）将三聚甲醛乙二醇二甲醚（POMDMEn = 3）或含有三聚甲醛乙二醇二甲醚的混合物加入到反应器中，并使该物质在酸性催化剂存在下反应，得到含有三恶烷的混合物（a） ，甲醛，水，亚甲基二醇（MG），聚甲醛二醇（MGn> 1），甲醇，半缩甲醛（HF），甲缩醛（POMDMEn = 1）和聚甲醛二醇二甲醚（POMDMEn> 1） b）通过蒸馏分离反应混合物（a），得到含有三恶烷，甲醛，水，亚甲基二醇，甲醇，半缩甲醛（HFn = 1），甲缩醛和二聚甲醛二醇二甲醚（POMDMEn = 2）的低沸点馏分 ）和含有三恶烷，聚甲醛二醇（MGn> 1），半缩甲醛（HFn> 1）和聚甲醛乙二醇二甲醚（POMDMEn> 2）的高沸点馏分（b2）; c）通过蒸馏分离高沸点馏分（b2）以得到含有三恶烷和含有聚甲醛二醇（MGn> 1），半缩甲醛（HFn> 1）和高级沸点馏分（c）的低沸点馏分 聚甲醛二醇二甲醚（POMDMEn = 2）。

公开(公告)号：EP2142525A1

公开(公告)日：2010-01-13

申请号：EP08718288.7

申请日：2008-03-27

Applicant: BASF SE

Inventor： STROEFER, Eckhard ,  LANG, Neven ,  SIEGERT, Markus ,  HASSE, Hans

IPC: C07D323/06

CPC classification number: C07D323/06

Abstract: The invention relates to a method for producing trioxane from trioxymethylene glycol dimethyl ether (POMD- MEn=3) by reacting trioxymethylene glycol dimethyl ether in the presence of an acidic catalyst and subsequently processing the reaction mixture by distillation. The method comprises the following steps: a) feeding trioxymethylene glycol dimethyl ether (POMDMEn=3) or a mixture containing trioxymethylene glycol dimethyl ether to a reactor and reacting the substance in the presence of an acidic catalyst to give a mixture (a) containing trioxane, formaldehyde, water, methylene glycol (MG), polyoxymethylene glycols (MGn>1), methanol, hemiformals (HF), methylal (POMDMEn=1) and polyoxymethylene glycol dimethyl ether (POMDMEn>1); b) separating the reaction mixture (a) by distillation to give a low-boiling fraction (b1) containing trioxane, formaldehyde, water, methylene glycol, methanol, hemiformal (HFn=1), methylal and dioxymethylene glycol dimethyl ether (POMDMEn=2) and a high-boiling fraction (b2) containing polyoxymethylene glycols (MGn>1), hemiformals (HFn>1) and polyoxymethylene glycol dimethyl ether (POMDMEn>2); c) separating the low-boiling fraction (b1) by distillation to give a low-boiling fraction (c1) containing formaldehyde, water, methylene glycol, methanol, hemiformal (HFn=1), methylal and dioxymethylene glycol dimethyl ether (POMDMEn=2) and a high-boiling fraction (c2) containing trioxane.

公开(公告)号：EP1789160B1

公开(公告)日：2009-11-18

申请号：EP05779042.0

申请日：2005-09-10

Applicant: BASF SE

Inventor： WÖLFERT, Andreas ,  KNÖSCHE, Carsten ,  PALLASCH, Hans-Jürgen ,  SESING, Martin ,  STROEFER, Eckhard ,  POLKA, Hans-Martin ,  HEILIG, Manfred

IPC: B01D53/14 ,  C01B7/07 ,  C01B31/28

CPC classification number: C01B7/0737 ,  B01D53/1493 ,  B01D2257/2045 ,  C01B32/80