公开(公告)号：US20070117997A1

公开(公告)日：2007-05-24

申请号：US11599640

申请日：2006-11-15

申请人： Berthold Keggenhoff ,  Jeffrey Bolton

发明人： Berthold Keggenhoff ,  Jeffrey Bolton

IPC分类号： C07C249/00

CPC分类号： C07C263/10 ,  C07C263/20 ,  C07C265/14

摘要： The present invention relates to a process for the production of 4,4′-diphenylmethane diisocyanate (4,4′-MDI) by acid-catalyzed condensation of aniline with formaldehyde, reaction of the mixtures of di- and polyamines obtained with phosgene to form the corresponding mixture of MDI isomers and homologues (di- and polyisocyanates of the diphenylmethane series) and subsequent separation of the mixture by distillation to form 4,4′-MDI and polymeric MDI.

摘要翻译： 本发明涉及通过苯胺与甲醛的酸催化缩合制备4,4'-二苯基甲烷二异氰酸酯（4,4'-MDI）的方法，由光气获得的二胺和多胺的混合物反应形成 MDI异构体和同系物（二苯基甲烷系列的二异氰酸酯和多异氰酸酯）的相应混合物，然后通过蒸馏分离混合物以形成4,4'-MDI和聚合MDI。

公开(公告)号：US20070012577A1

公开(公告)日：2007-01-18

申请号：US11484253

申请日：2006-07-11

申请人： Andreas Bulan ,  Rainer Weber ,  Wolfgang Lorenz ,  Gerhard Moormann ,  Friedhelm Kamper ,  Berthold Keggenhoff

发明人： Andreas Bulan ,  Rainer Weber ,  Wolfgang Lorenz ,  Gerhard Moormann ,  Friedhelm Kamper ,  Berthold Keggenhoff

IPC分类号： C25B3/06

CPC分类号： C07C263/10 ,  C07C263/20 ,  C25B1/26 ,  C07C265/14

摘要： An isocyanate is produced by: (a) reacting chlorine with carbon monoxide to form phosgene, (b) reacting the phosgene with an organic amine to form an isocyanate and hydrogen chloride, (c) separating the isocyanate and hydrogen chloride, (d) optionally, purifying the hydrogen chloride, (e) preparing an aqueous solution of the hydrogen chloride, (f) optionally, purifying the aqueous solution of hydrogen chloride, (g) subjecting the aqueous hydrogen chloride solution to electrochemical oxidation to form chlorine, and (h) returning at least a portion of the chlorine produced in (g) to (a).

摘要翻译： 通过以下方法制备异氰酸酯：（a）使氯与一氧化碳反应以形成光气，（b）使光气与有机胺反应形成异氰酸酯和氯化氢，（c）将异氰酸酯和氯化氢分离，（d） ，纯化氯化氢，（e）制备氯化氢水溶液，（f）任选地，纯化氯化氢水溶液，（g）使氯化氢水溶液进行电化学氧化形成氯，和（h ）将（g）至（a）中产生的氯的至少一部分返回。

公开(公告)号：US20060038306A1

公开(公告)日：2006-02-23

申请号：US11199697

申请日：2005-08-09

申请人： Rainer Buse ,  Berthold Keggenhoff ,  Jurgen Munnig ,  Friedhelm Steffens ,  Joachim Ritter

发明人： Rainer Buse ,  Berthold Keggenhoff ,  Jurgen Munnig ,  Friedhelm Steffens ,  Joachim Ritter

IPC分类号： B01F3/04

CPC分类号： B01F3/04539 ,  B01F3/2215 ,  B01F7/00641 ,  B01F2003/04546 ,  B01F2003/04567 ,  B01F2015/061 ,  B01F2215/0427 ,  B01F2215/0431 ,  B01F2215/0472 ,  B01F2215/0481 ,  B01J19/0066 ,  B01J2219/00076

摘要： The invention describes a stirring device made from a gassing stirrer and a liquid mixer or two liquid mixers, which are arranged on a shaft and each have a feed and at least one exit opening, wherein the exit openings of the gassing stirrer and of the liquid mixer or the liquid mixers are at a distance from one another, the ratio, a/d, of the distance, a, between the exit openings to the diameter, d, of the gassing stirrer or liquid mixer being 0.02 to 0.5 and the ratio, b/d, of the distance, b, between the outer edges to the diameter, d, of the gassing stirrer or liquid mixer being 0.01 to 0.4.

摘要翻译： 本发明描述了一种由排气搅拌器和液体混合器或两个液体混合器制成的搅拌装置，它们设置在轴上，每个具有进料和至少一个出口，其中排气搅拌器和液体的出口 混合器或液体混合器彼此间隔一定距离，排气口与吹气搅拌器或液体混合器的直径d之间的距离a的比值a / d为0.02至0.5， b / d之间的距离b，在外边缘与排气搅拌器或液体混合器的直径d之间的距离b为0.01至0.4。

公开(公告)号：US06984762B2

公开(公告)日：2006-01-10

申请号：US10780266

申请日：2004-02-17

申请人： Erwin Dieterich ,  Anke Hielscher ,  Berthold Keggenhoff ,  Manfred Keller-Killewald ,  Jürgen Münnig ,  Dietmar Wastian

发明人： Erwin Dieterich ,  Anke Hielscher ,  Berthold Keggenhoff ,  Manfred Keller-Killewald ,  Jürgen Münnig ,  Dietmar Wastian

IPC分类号： C07C205/00

CPC分类号： C07C201/16 ,  C07C201/08 ,  C07C205/06

摘要： The invention relates to a process for the production of dinitrotoluene by the two-stage nitration of toluene. In the first stage of this process, toluene was reacted adiabatically with nitrating acid so that at least 90% of the toluene was reacted off and no more than 70% of the toluene formed dinitrotoluene. The resulting organic phase containing mononitrotoluene and the aqueous acid phase containing sulfuric acid were separated, and the aqueous acid phase containing sulfuric acid was concentrated by flash evaporation. The resulting concentrated sulfuric acid was recycled into the reaction in the first stage, and/or into the reaction in the second stage, and/or into the concentration in the second stage.In the second stage, the organic phase containing mononitrotoluene from the first stage was completely reacted isothermally with nitrating acid. The organic phase and the aqueous acid phase containing sulfuric acid were then separated, and the aqueous acid phase containing sulfuric acid was concentrated by vacuum evaporation. The resulting concentrated sulfuric acid was recycled into the reaction in the first stage and/or the second stage.

摘要翻译： 本发明涉及通过甲苯二段硝化生产二硝基甲苯的方法。 在该方法的第一阶段，将甲苯与硝酸进行绝热反应，使得甲苯的至少90％反应，并且不超过70％的甲苯形成二硝基甲苯。 分离含有单硝基甲苯和含硫酸水相的所得有机相，通过闪蒸浓缩含硫酸水相。 将所得浓硫酸在第一阶段循环进入反应，和/或在第二阶段进入反应，和/或在第二阶段中浓缩。 在第二阶段，含有来自第一阶段的一硝基甲苯的有机相与硝酸一起等温共同反应。 然后分离含有硫酸的有机相和含水酸相，真空蒸发浓缩含硫酸的酸水溶液。 所得浓硫酸在第一阶段和/或第二阶段循环进入反应。

公开(公告)号：US4597909A

公开(公告)日：1986-07-01

申请号：US703843

申请日：1985-02-21

申请人： Berthold Keggenhoff ,  Enno Mahlmann ,  Willi Eifler ,  Gunther Ellendt

发明人： Berthold Keggenhoff ,  Enno Mahlmann ,  Willi Eifler ,  Gunther Ellendt

IPC分类号： C07B61/00 ,  B01J27/00 ,  B01J27/10 ,  C07C67/00 ,  C07C209/00 ,  C07C209/78 ,  C07C211/50 ,  C07C241/00 ,  C07C263/10 ,  C07C265/14 ,  C07C118/02

CPC分类号： C07C265/14

摘要： The present invention is directed to a process for the production of polyamines of the diphenylmethane series having a high diamine content and a low 2,2'-diamino-diphenylmethane content by condensing aniline with formaldehyde in the presence of hydrochloric acid as catalyst, neutralizing the acid catalyst at the end of the condensation reaction and working up the polyamine mixture thus obtained by distillation, characterized in that(a) in a first reaction stage, from 2.0 to 3.5 moles of aniline are reacted with 1 mole of formaldehyde in the presence of hydrochloric acid or a condensation product produced from 2.0 to 3.5 moles of aniline and 1 mole of formaldehyde in the absence of acid catalyst is reacted in the presence of hydrochloric acid at a degree of protonation maintained at 40 to 60% at temperatures below 50.degree. C.,(b) more aniline is then added to the reaction mixture so that the molar ratio of amine nitrogen atoms in the form of free aniline and the reaction products formed in accordance with (a) to formaldehyde chemically bound in the form of methylene bridges in those reaction products rises to more than 10:1 and up to 20:1 with the degree of protonation decreasing correspondingly,(c) the reaction mixture obtained in accordance with (b) is heated to allow the N-substituted intermediate products present to be completely rearranged into polyamines containing unsubstituted primary amino groups, and(d) the reaction mixture obtained in accordance with (c) is worked up by distillation after neutralization of the acid.The invention is also directed to the use of the polyamines so produced in the manufacture of polyisocyanates.

摘要翻译： 本发明涉及一种通过在盐酸作为催化剂存在下使苯胺与甲醛缩合而制备二胺含量高和低二氨基二苯基甲烷含量低的二苯基甲烷系多胺的方法，中和 在酸性催化剂的缩合反应结束时，通过蒸馏处理由此得到的多胺混合物，其特征在于：（a）在第一反应阶段，将2.0-3.5摩尔苯胺与1摩尔甲醛在 在不存在酸催化剂的情况下，盐酸或由2.0-3.5摩尔苯胺和1摩尔甲醛生成的缩合产物在盐酸存在下在50℃以下的质子化程度保持在40至60％ （b）然后将更多的苯胺加入到反应混合物中，使得游离苯胺形式的胺氮原子与反应产物的摩尔比形成 根据（a），甲醛化学键合的甲醛在这些反应产物中的结构上升到10：1以上，质子化程度相应地降低到20：1，（c） 按照（b）加热以使存在的N-取代的中间产物完全重新排列成含有未取代的伯氨基的多胺，和（d）根据（c）获得的反应混合物在中和 酸。 本发明还涉及在制造多异氰酸酯中如此生产的多胺的用途。

公开(公告)号：US20080275269A1

公开(公告)日：2008-11-06

申请号：US11448444

申请日：2006-06-07

申请人： Berthold Keggenhoff ,  Ralf Echterhoff ,  Ricardo-Burel Serra

发明人： Berthold Keggenhoff ,  Ralf Echterhoff ,  Ricardo-Burel Serra

IPC分类号： C07C263/16

CPC分类号： C07C263/20 ,  C07C263/10 ,  C07C265/14

摘要： 4,4′-diphenylmethane diisocyanate is produced at two different sites by a) reacting aniline and formaldehyde in the presence of an acid catalyst to produce a mixture of diamines and polyamines of the diphenylmethane series at a first production site, b) these diamines and polyamines are then reacted with phosgene to give the corresponding diisocyanates and polyisocyanates of the diphenylmethane series, which may optionally be separated by distillation to give a mixture of diisocyanates and polyisocyanates containing from 50 to 80 wt. % of 4,4′-diphenylmethane diisocyanate, from 1 to 12 wt. % of 2,4′- and/or 2,2′-diphenylmethane diisocyanate taken together, and from 10 to 45 wt. % of trifunctional and higher-functional polyisocyanates, based on the weight of the mixture of diisocyanates and polyisocyanates, c) transferring the mixture of diisocyanates and polyisocyanates to transport containers and transporting these isocyanate-containing containers to a second production site remote from the first, and d) separating the mixture of diisocyanates and polyisocyanates by distillation and/or crystallization to give a pure 4,4′-diphenylmethane diisocyanate containing at least 97 wt. % of 4,4′-diphenylmethane diisocyanate and a maximum of 3 wt. % of 2,4′-diphenylmethane diisocyanate.

摘要翻译： 在两个不同的位置通过以下方法产生4,4'-二苯基甲烷二异氰酸酯：a）在酸催化剂存在下使苯胺和甲醛反应，以在第一个生产部位产生二苯基甲烷系列的二胺和多胺的混合物，b）这些二胺和 然后将多胺与光气反应，得到二苯基甲烷系列的相应二异氰酸酯和多异氰酸酯，其可以任选地通过蒸馏分离，得到二异氰酸酯和含有50-80重量份的多异氰酸酯的混合物。 ％的4,4'-二苯基甲烷二异氰酸酯，1至12wt。 2,4'-和/或2,2'-二苯基甲烷二异氰酸酯的百分比在一起，和10-45wt。 基于二异氰酸酯和多异氰酸酯的混合物的重量，三官能和更高官能度的多异氰酸酯的百分比，c）将二异氰酸酯和多异氰酸酯的混合物转移到运输容器并将这些含异氰酸酯的容器运输到远离第一， 和d）通过蒸馏和/或结晶分离二异氰酸酯和多异氰酸酯的混合物，得到纯的4,4'-二苯基甲烷二异氰酸酯，其含有至少97wt。 ％的4,4'-二苯基甲烷二异氰酸酯和最多3wt。 ％的2,4'-二苯基甲烷二异氰酸酯。

公开(公告)号：US07322565B2

公开(公告)日：2008-01-29

申请号：US11199697

申请日：2005-08-09

申请人： Rainer Buse ,  Berthold Keggenhoff ,  Jürgen Münnig ,  Friedhelm Steffens ,  Joachim Ritter

发明人： Rainer Buse ,  Berthold Keggenhoff ,  Jürgen Münnig ,  Friedhelm Steffens ,  Joachim Ritter

IPC分类号： B01F3/04

CPC分类号： B01F3/04539 ,  B01F3/2215 ,  B01F7/00641 ,  B01F2003/04546 ,  B01F2003/04567 ,  B01F2015/061 ,  B01F2215/0427 ,  B01F2215/0431 ,  B01F2215/0472 ,  B01F2215/0481 ,  B01J19/0066 ,  B01J2219/00076

摘要： The invention describes a stirring device made from a gassing stirrer and a liquid mixer or two liquid mixers, which are arranged on a shaft and each have a feed and at least one exit opening, wherein the exit openings of the gassing stirrer and of the liquid mixer or the liquid mixers are at a distance from one another, the ratio, a/d, of the distance, a, between the exit openings to the diameter, d, of the gassing stirrer or liquid mixer being 0.02 to 0.5 and the ratio, b/d, of the distance, b, between the outer edges to the diameter, d, of the gassing stirrer or liquid mixer being 0.01 to 0.4.

摘要翻译： 本发明描述了一种由排气搅拌器和液体混合器或两个液体混合器制成的搅拌装置，它们设置在轴上，每个具有进料和至少一个出口，其中排气搅拌器和液体的出口 混合器或液体混合器彼此间隔一定距离，排气口与吹气搅拌器或液体混合器的直径d之间的距离a的比值a / d为0.02至0.5， b / d之间的距离b，在外边缘与排气搅拌器或液体混合器的直径d之间的距离b为0.01至0.4。

公开(公告)号：US20070265465A1

公开(公告)日：2007-11-15

申请号：US11801636

申请日：2007-05-10

申请人： Berthold Keggenhoff ,  Heinrich Lokum ,  Matthias Bohm

发明人： Berthold Keggenhoff ,  Heinrich Lokum ,  Matthias Bohm

IPC分类号： C07C263/10

CPC分类号： C07C263/10 ,  C07C265/14

摘要： Isocyanates, preferably diisocyanates and polyisocyanates of the diphenylmethane series (MDI), are produced by reaction of amines dissolved in a solvent with phosgene in the same solvent to form the corresponding isocyanates. Hydrogen chloride and excess phosgene are subsequently removed from the reaction mixture to obtain a crude isocyanate-containing solution. Subsequently, the crude isocyanate-containing solution is separated by distillation into isocyanates and solvent. The solvent is recycled and used for the production of solutions of the amines and of phosgene. The solvent being recycled is treated to reduce the phosgene and diisocyanate contents before being used for the production of the solution of the amine.

摘要翻译： 二苯基甲烷系列（MDI）的异氰酸酯，优选二异氰酸酯和多异氰酸酯是通过将溶于溶剂中的胺与光气在相同溶剂中反应形成相应的异氰酸酯而制备的。 随后从反应混合物中除去氯化氢和过量的光气，得到粗的含异氰酸酯的溶液。 随后，将含粗异氰酸酯的溶液通过蒸馏分离成异氰酸酯和溶剂。 将溶剂再循环并用于生产胺和光气的溶液。 在用于制备胺溶液之前，处理回收的溶剂以降低光气和二异氰酸酯含量。

公开(公告)号：US07118653B2

公开(公告)日：2006-10-10

申请号：US10457307

申请日：2003-06-09

申请人： Bill Brady ,  Friedhelm Steffens ,  Berthold Keggenhoff ,  Kai Verkerk ,  Gerhard Ruffert

发明人： Bill Brady ,  Friedhelm Steffens ,  Berthold Keggenhoff ,  Kai Verkerk ,  Gerhard Ruffert

IPC分类号： B01D3/14 ,  C07C263/20 ,  C07C263/10 ,  C07C265/10

CPC分类号： C07C263/20 ,  C07C263/10 ,  Y10S203/11 ,  C07C265/14

摘要： Process for the purification of toluenediisocyanate from a crude distillation feed which includes toluenediisocyanate, an organic solvent and less than 2% by weight phosgene by separating the crude distillation feed in a dividing-wall distillation column into at least four product fractions P1–P4. P1 is a phosgene enriched low-boiler product, P2 is a solvent-enriched product, P3 is a high boiler enriched bottoms and P4 is a toluenediisocyanate product stream.

摘要翻译： 通过将分馏壁蒸馏塔中的粗蒸馏进料分离成至少四个产物馏分P 1 -P 4，从粗蒸馏进料中纯化甲苯二异氰酸酯的方法，所述原油蒸馏进料包括甲苯二异氰酸酯，有机溶剂和小于2重量％的光气 P 1是富含光气的低沸点产物，P 2是富含溶剂的产物，P 3是富含高浓度锅炉的塔底物，P 4是甲苯二异氰酸酯产物流。

公开(公告)号：US07108770B2

公开(公告)日：2006-09-19

申请号：US10687157

申请日：2003-10-16

申请人： Marcus Paul Grün ,  Bill Brady, Jr. ,  Berthold Keggenhoff ,  Kai Verkerk ,  Hans-Peter Schal

发明人： Marcus Paul Grün ,  Bill Brady, Jr. ,  Berthold Keggenhoff ,  Kai Verkerk ,  Hans-Peter Schal

IPC分类号： B01D3/14 ,  C07C263/10 ,  C07C263/20 ,  C07C265/10

CPC分类号： C07C263/10 ,  C07C263/20 ,  Y10S203/11 ,  C07C265/14

摘要： Toluene diisocyanate is recovered from a crude distillation feed containing less than 2% by weight of phosgene by(a) fractionating the crude distillation feed containing less than 2% by weight of phosgene to remove the solvent and optionally the reaction residues to produce a crude toluene diisocyanate feed containing less than 20% by weight of solvent and(b) separating the crude toluene diisocyanate feed containing less than 20% by weight of solvent in a divided-wall distillation column into four product fractions P1–P4. P1 is a vapor phase low-boiler and solvent-enriched gas stream, P2 is a low-boiler and solvent-enriched product, P3 is a high boiler-enriched bottoms product containing toluene diisocyanate and P4 is a toluene diisocyanate product stream lean in low-boilers, high-boilers and reaction residues.

摘要翻译： 通过（a）将含有少于2重量％的光气的粗蒸馏进料分馏以除去溶剂和任选的反应残余物以产生粗甲苯，从含有小于2重量％的光气的粗蒸馏进料中回收甲苯二异氰酸酯 含有少于20重量％溶剂的二异氰酸酯进料和（b）在分壁蒸馏塔中将含有少于20重量％溶剂的粗甲苯二异氰酸酯进料分离成四个产物馏分P1-P4。 P1是蒸气相低沸点和富溶剂的气流，P2是低沸点和溶剂富含的产物，P3是含有甲苯二异氰酸酯的高富含塔底物的塔底产物，P4是低浓度的甲苯二异氰酸酯产物流 锅炉，高锅炉和反应残渣。