专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US07193115B2 Highly concentrated formaldehyde solution, production and reaction thereof 有权
公开(公告)号：US07193115B2
公开(公告)日：2007-03-20
申请号：US10494762
申请日：2002-11-05
申请人： Eckhard Ströfer , Martin Sohn , Hans Hasse , Klemens Schilling
发明人： Eckhard Ströfer , Martin Sohn , Hans Hasse , Klemens Schilling
IPC分类号： C07C47/00 , A23J7/00
CPC分类号： C07C47/04 , C07C45/79 , C07C45/82 , C07C47/02
摘要： In an aqueous formaldehyde solution comprising formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in a total concentration x of ≧65% by weight, the mean molar mass M of the polyoxymethylene glycols is, as a function of the formaldehyde concentration, equal to or less than the values given by equation I: ( M _ g ⁢ / ⁢ mol ) = 48 + 6.589 · 10 - 1 · ( x % ⁢ ⁢ by ⁢ ⁢ weight ) + 4.725 · 10 2 · ⁢ ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 2 - 3.434 · 10 - 3 · ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 3 + ⁢ 9.625 · 10 - 5 · ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 4 - 1.172 · 10 6 · ⁢ ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 5 + 5.357 · 10 - 9 · ( x % ⁢ ⁢ by ⁢ ⁢ weight ) 6 ( I ) where: M is the mean molar mass, and x is the total concentration of formaldehyde in the form of monomeric formaldehyde, methylene glycol and polyoxymethylene glycols in % by weight (total formaldehyde concentration).

2. 发明授权

US06576788B1 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 COLOR INDEX 有权
标题翻译：生产含二苯甲基二异氰酸酯的混合物的方法和含有减少的氯化二次产物和减少的碘颜色指数的聚苯乙烯 - 聚乙烯 - 聚异氰酸酯
公开(公告)号：US06576788B1
公开(公告)日：2003-06-10
申请号：US09673326
申请日：2000-10-13
申请人： Ulrich Penzel , Volker Scharr , Dieter Starosta , Hilmar Boesel , Eckhard Ströfer , Joachim Pfeffinger , Frank Poplow , Jürgen Dosch , Hans Volkmar Schwarz , Fritz Näumann , Peter van den Abeel , Jan Jacobs , Filip Nevejans , Willy van Pee
发明人： Ulrich Penzel , Volker Scharr , Dieter Starosta , Hilmar Boesel , Eckhard Ströfer , Joachim Pfeffinger , Frank Poplow , Jürgen Dosch , Hans Volkmar Schwarz , Fritz Näumann , Peter van den Abeel , Jan Jacobs , Filip Nevejans , Willy van Pee
IPC分类号： C07C24914
CPC分类号： C07C263/10 , C07C263/20 , C07C265/14
摘要： In a process for preparing mixtures of diphenylmethane diisocyanates and polyphenylpolymethylene polyisocyanates having a reduced content of chlorinated by-products and a reduced iodine color number by two-stage reaction of the corresponding mixtures of diphenylmethanediamines and polyphenylpolymethylenepolyamines with phosgene in the presence of at least one inert organic solvent at elevated temperature, separation of the excess phosgene and solvent after the phosgenation is complete and thermal treatment of the reaction product, the mass ratios of phosgene to hydrogen chloride in the residence time apparatus of the second stage of the phosgenation are at the same time 10-30:1 in the liquid phase and 1-10:1 in the gas phase.
摘要翻译：在二氯甲烷二异氰酸酯和多苯基聚亚甲基多异氰酸酯的混合物的制备方法中，其中氯化副产物含量降低，碘色数降低，二苯基甲烷二胺与多苯基多亚甲基多胺与光气的相应混合物在至少一种惰性的存在下进行两步反应高温下的有机溶剂，光气化后过剩的光气和溶剂的分离完成，反应产物的热处理，光气化第二阶段的停留时间装置中光气与氯化氢的质量比相同时间为10-30：1，液相为1-10：1。

3. 发明授权

US07230130B2 Process for preparing methylenedianiline and methylenebis (phenylisocyanate) 有权
标题翻译：亚甲基二苯胺和亚甲基双（异氰酸苯酯）的制备方法
公开(公告)号：US07230130B2
公开(公告)日：2007-06-12
申请号：US10843046
申请日：2004-05-11
申请人： Eckhard Ströfer , Jan Jacobs , Wilfried Seyfert , Hans Volkmar Schwarz , Olaf Schweers , Volker Scharr , Ulrich Penzel
发明人： Eckhard Ströfer , Jan Jacobs , Wilfried Seyfert , Hans Volkmar Schwarz , Olaf Schweers , Volker Scharr , Ulrich Penzel
IPC分类号： C07C263/10
CPC分类号： C07C209/78 , C07C263/10 , C07C211/50 , C07C265/12 , C07C265/14
摘要： A process for preparing methylenedianiline by reacting aniline with formaldehyde in the presence of acid catalysts comprising, in a semicontinuous process, introducing aniline with or without acid catalyst, feeding formaldehyde with or without acid catalyst through a mixing element into a circuit in which aniline with or without acid catalyst and with or without previously added formaldehyde is circulated and, after feeding in at least 50% of the total amount of formaldehyde to be fed in, heating the reaction mixture to a temperature above 75° C.In addition, the invention relates to a process for preparing polyisocyanates by phosgenation of amines obtainable in this manner and to the polyisocyanates obtainable by this process.
摘要翻译：一种在酸催化剂存在下使苯胺与甲醛反应制备亚甲基二苯胺的方法，该方法包括在半连续方法中引入具有或不具有酸催化剂的苯胺，通过混合元件将甲醛与/或不含酸催化剂进料到其中具有或没有酸催化剂和有或没有预先加入的甲醛循环，并且在进料至少要供入的甲醛总量的50％之后，将反应混合物加热到高于75℃的温度。另外，本发明涉及涉及通过以这种方式获得的胺的光气化制备多异氰酸酯的方法以及通过该方法可获得的多异氰酸酯。

4. 发明授权

US07029557B2 Method for producing an aqueous hydroxylamine solution devoid of salt 有权
标题翻译：不含盐的羟胺水溶液的制造方法
公开(公告)号：US07029557B2
公开(公告)日：2006-04-18
申请号：US10482212
申请日：2002-07-02
申请人： Karl-Heinz Wostbrock , Joachim Thiel , Heinz Krüger , Eckhard Ströfer , Markus Weber , Bernd Gerber , Bernd Rumpf , Bernd Sachweh , Steffen Kerth
发明人： Karl-Heinz Wostbrock , Joachim Thiel , Heinz Krüger , Eckhard Ströfer , Markus Weber , Bernd Gerber , Bernd Rumpf , Bernd Sachweh , Steffen Kerth
IPC分类号： B01D3/16 , B01D19/30 , C01B21/14
CPC分类号： B01J19/30 , B01D3/16 , B01J19/32 , B01J2219/30215 , B01J2219/30466 , B01J2219/3221 , B01J2219/32483 , C01B21/1445 , Y10S203/11 , Y10S261/72
摘要： The invention relates to a method for producing a highly pure, aqueous hydroxylamine solution by distilling an aqueous solution, devoid of salt, of a hydroxyl ammonium salt in a plate column comprising at least two mechanical plates. Said method is characterised in that packing bodies are arranged between at least two plates of the plate column over the cross-section of said column.
摘要翻译：本发明涉及一种通过在含有至少两个机械板的板塔中蒸馏羟基铵盐的没有盐的水溶液来生产高纯度的羟胺溶液的方法。所述方法的特征在于，在所述塔的横截面上的包装体布置在板柱的至少两个板之间。

5. 发明授权

US06916953B2 Integrated process for preparing isocyanates 有权
标题翻译：制备异氰酸酯的综合方法
公开(公告)号：US06916953B2
公开(公告)日：2005-07-12
申请号：US10227865
申请日：2002-08-27
申请人： Christian Walsdorff , Martin Fiene , Eckhard Ströfer , Klaus Harth , Jan D. Jacobs , Filip Deberdt
发明人： Christian Walsdorff , Martin Fiene , Eckhard Ströfer , Klaus Harth , Jan D. Jacobs , Filip Deberdt
IPC分类号： B01J23/46 , C01B7/04 , C07C263/10 , C07C263/00 , C07C263/18 , C07C263/20
CPC分类号： C01B7/04 , B01J23/462 , C07C263/10 , C07C263/20 , Y02P20/125 , C07C265/14
摘要： Process for preparing organic isocyanates, which comprises the steps (a) making available a first partial amount of chlorine, with the chlorine of this first partial amount having a content of free and bound bromine and iodine of
摘要翻译：制备有机异氰酸酯的方法，其包括步骤（a）获得第一部分量的氯，该第一部分量的氯具有游离的溴和碘的含量<400ppm; （b）提供第二部分氯; （c）使第一和第二部分氯与一氧化碳反应以形成光气; （d）使来自步骤（c）的光气与一种或多种伯胺反应形成相应的异氰酸酯和氯化氢; （e）分离和（如果需要）纯化步骤（d）中形成的异氰酸酯; （f）分离，如有必要，纯化步骤（d）中形成的氯化氢; （g）通过氧气氧化在步骤（e）中分离的至少部分氯化氢以形成氯; （h）分离步骤（g）中形成的氯，并使用步骤（b）中已经分离出的氯的至少一部分氯作为第二部分氯。

6. 发明授权

US06942762B2 Method for the production of a salt-free aqueous hydroxylamine solution 有权
标题翻译：生产无盐羟胺溶液的方法
公开(公告)号：US06942762B2
公开(公告)日：2005-09-13
申请号：US10482214
申请日：2002-07-02
申请人： Karl-Heinz Wostbrock , Joachim Thiel , Heinz Krüger , Eckhard Ströfer , Markus Weber , Bernd Gerber , Bernd Rumpf , Bernd Sachweh , Steffen Kerth
发明人： Karl-Heinz Wostbrock , Joachim Thiel , Heinz Krüger , Eckhard Ströfer , Markus Weber , Bernd Gerber , Bernd Rumpf , Bernd Sachweh , Steffen Kerth
IPC分类号： B01D3/16 , B01J19/30 , B01J19/32 , C01B21/14 , B01V19/30
CPC分类号： C01B21/1445 , B01D3/16 , B01J19/30 , B01J19/32 , B01J2219/30215 , B01J2219/30466 , B01J2219/3221 , B01J2219/32483 , Y10S203/20 , Y10S261/72
摘要： A process for preparing a salt-free aqueous hydroxylamine solution by distilling an aqueous solution of a hydroxylammonium salt and a base in a tray column having at least two mechanical trays, wherein random or structured packings are located above at least one tray of the tray column over the cross section of the column.
摘要翻译：一种通过在具有至少两个机械盘的塔盘塔中蒸馏羟基铵盐和碱的水溶液来制备无盐羟胺溶液的方法，其中无规或规整的填料位于塔盘塔的至少一个塔盘的上方在列的横截面上。

7. 发明授权

US06831192B2 Process for preparing methylenedianiline and methylenebis(phenyl isocyanate) 有权
标题翻译：亚甲基二苯胺和亚甲基双（苯基异氰酸酯）
公开(公告)号：US06831192B2
公开(公告)日：2004-12-14
申请号：US10152489
申请日：2002-05-21
申请人： Eckhard Ströfer , Jan Jacobs , Wilfried Seyfert , Hans Volkmar Schwarz , Olaf Schweers , Volker Scharr , Ulrich Penzel
发明人： Eckhard Ströfer , Jan Jacobs , Wilfried Seyfert , Hans Volkmar Schwarz , Olaf Schweers , Volker Scharr , Ulrich Penzel
IPC分类号： C07C26310
CPC分类号： C07C209/78 , C07C263/10 , C07C211/50 , C07C265/12 , C07C265/14
摘要： A process for preparing methylenedianiline by reacting aniline with formaldehyde in the presence of acid catalysts comprising, in a semicontinuous process, introducing aniline with or without acid catalyst, feeding formaldehyde with or without acid catalyst through a mixing element into a circuit in which aniline with or without acid catalyst and with or without previously added formaldehyde is circulated and, after feeding in at least 50% of the total amount of formaldehyde to be fed in, heating the reaction mixture to a temperature above 75° C. In addition, the invention relates to a process for preparing polyisocyanates by phosgenation of amines obtainable in this manner and to the polyisocyanates obtainable by this process.
摘要翻译：一种在酸催化剂存在下使苯胺与甲醛反应制备亚甲基二苯胺的方法，该方法包括在半连续方法中引入具有或不具有酸催化剂的苯胺，通过混合元件将甲醛与/或不含酸催化剂进料到其中具有或没有酸催化剂和有或没有预先加入的甲醛循环，并且在进料至少要加入的甲醛总量的50％之后，将反应混合物加热至高于75℃。此外，本发明涉及涉及通过以这种方式获得的胺的光气化制备多异氰酸酯的方法以及通过该方法可获得的多异氰酸酯。

8. 发明授权

US06350911B1 Method for producing amines 有权
标题翻译：胺的制备方法
公开(公告)号：US06350911B1
公开(公告)日：2002-02-26
申请号：US09857903
申请日：2001-06-11
申请人： Michael Sander , Ulrich Penzel , Hans Volkmar Schwarz , Eckhard Ströfer , Dieter Stützer , Jörn Müller , Markus Maurer , Peter Zehner , Ekkehard Schwab , Ralf Böhling , Dominic Vanoppen
发明人： Michael Sander , Ulrich Penzel , Hans Volkmar Schwarz , Eckhard Ströfer , Dieter Stützer , Jörn Müller , Markus Maurer , Peter Zehner , Ekkehard Schwab , Ralf Böhling , Dominic Vanoppen
IPC分类号： C07C21100
CPC分类号： C07C209/36 , B01J4/002 , B01J10/002 , B01J19/006 , B01J19/246 , B01J19/2465 , B01J19/2475 , B01J2219/00078 , B01J2219/00081 , B01J2219/00085 , B01J2219/00094 , B01J2219/00777 , C07C211/51
摘要： The invention relates to a process for the preparation of amines by hydrogenation of nitro compounds, which comprises carrying out the hydrogenation in a vertical reactor whose length is greater than its diameter, having a downward-facing jet nozzle arranged in the upper region of the reactor through which the starting materials and the reaction mixture are fed in, and having an outlet at any desired point of the reactor, through which the reaction mixture is fed back to the jet nozzle in an external circuit by means of a conveying means, and having flow reversal in the lower region of the reactor.
摘要翻译：本发明涉及一种通过氢化硝基化合物制备胺的方法，其包括在其长度大于其直径的立式反应器中进行氢化，其具有布置在反应器的上部区域中的面向下的喷嘴原料和反应混合物通过该反应混合物进料，并在反应器的任何所需点处具有出口，反应混合物通过该反应混合物通过输送装置在外部回路中被反馈到喷嘴，并具有在反应器的下部区域的流动反转。

9. 发明授权

US06299734B1 Preparation of an aqueous solution of free hydroxylamine 失效
标题翻译：制备游离羟胺水溶液
公开(公告)号：US06299734B1
公开(公告)日：2001-10-09
申请号：US09122099
申请日：1998-07-24
申请人： Otto Watzenberger , Peter Mauer , Eckhard Ströfer , Heiner Schelling , Hans-Michael Schneider
发明人： Otto Watzenberger , Peter Mauer , Eckhard Ströfer , Heiner Schelling , Hans-Michael Schneider
IPC分类号： B01D334
CPC分类号： C01B21/1445
摘要： An aqueous solution of free hydroxylamine is prepared by treating a hydroxylammonium salt with ammonia by the countercurrent method in a stripping column by a process in which hydroxylamine is liberated and at the same time the solution obtained is separated by distillation into an aqueous hydroxylamine solution and a salt fraction. The novel process can be carried out in a simple and gentle manner and on a large scale. The danger of decomposition is minimized owing to the low thermal load, the low concentration of hydroxylamine and the short residence time in the process.
摘要翻译：游离羟胺的水溶液是通过在汽提塔中通过逆流法在氨基处理羟胺而制备的，其中羟胺被释放，同时将得到的溶液通过蒸馏分离成羟胺水溶液和盐分。新颖的过程可以简单而温和的方式进行，大规模进行。由于热负荷低，羟胺浓度低，并且在该过程中停留时间短，所以分解的危险被最小化。

10. 发明授权

US07713387B2 Method for separating trioxane from a trioxane/formaldehyde/water mixture by means of pressure change rectification 有权
标题翻译：通过压力变换精馏从三恶烷/甲醛/水混合物中分离三恶烷的方法
公开(公告)号：US07713387B2
公开(公告)日：2010-05-11
申请号：US10583698
申请日：2004-12-21
申请人： Markus Siegert , Neven Lang , Eckhard Ströfer , Achim Stammer , Thorsten Friese , Hans Hasse
发明人： Markus Siegert , Neven Lang , Eckhard Ströfer , Achim Stammer , Thorsten Friese , Hans Hasse
IPC分类号： B01D3/00 , C07D323/06 , C07C45/78
CPC分类号： C07D323/06
摘要： A process for removing trioxane from a use stream I of formaldehyde, trioxane and water, by a) providing a use stream I of formaldehyde as the main component and trioxane and water as the secondary components, b) mixing the use stream I with a recycle stream VII to obtain a feed stream Ia, c) distilling the use stream Ia in a first distillation stage to obtain a stream II of formaldehyde as the main component and water as the secondary component, and a stream III of trioxane as the main component and water and formaldehyde as the secondary components, d) distilling the stream III in a second distillation stage having a pressure higher than in the first distillation stage, to obtain a stream IV of trioxane and a stream V of trioxane as the main component and water and formaldehyde as the secondary components, e) distilling the stream V in a third distillation stage to obtain a stream VI of water and the recycle stream VII of trioxane as the main component and water and formaldehyde as the secondary components.
摘要翻译：一种从甲醛，三恶烷和水的使用流I中除去三恶烷的方法，通过以下步骤：a）提供以甲醛为主要成分的使用流I和作为第二组分的三恶烷和水，b）将使用流I与再循环流VII以获得进料流Ia，c）在第一蒸馏阶段中蒸馏出使用流Ia以获得作为主要组分的甲醛的流II和作为第二组分的水，以及作为主要组分的三恶烷的流III和水和甲醛作为次要组分，d）在具有高于第一蒸馏阶段的压力的第二蒸馏阶段中蒸馏料流III，得到三恶烷的流IV和三恶烷的流V作为主要成分，甲醛作为次要组分，e）在第三蒸馏阶段中蒸馏物流V以获得水的流VI和三恶烷的再循环流VII作为主要成分，水和甲醛为t 他的次要成分。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式