公开(公告)号：US06596883B2

公开(公告)日：2003-07-22

申请号：US10226766

申请日：2002-08-23

申请人： Willi Hofen ,  Thomas Haas ,  Wolfgang Wöll ,  Georg Thiele

发明人： Willi Hofen ,  Thomas Haas ,  Wolfgang Wöll ,  Georg Thiele

IPC分类号： C07D30132

CPC分类号： C07D301/12

摘要： A process for the working up of a product stream from the epoxidation of olefins that contains olefin, olefin oxide, water-miscible organic solvent and water, by separating this product stream into an overhead product containing olefin, olefin oxide and organic solvent, and into a bottom product containing organic solvent and water, wherein the separation takes place in a pre-evaporator with less than 10 theoretical separation stages at a pressure of 1.5 to less than 3 bar, and 20 to 60% of the total amount of organic solvent introduced with the product stream is removed with the overhead product and the balance remains in the bottom product. A process for the epoxidation of olefins that includes this working up stage is also disclosed.

公开(公告)号：US4874556A

公开(公告)日：1989-10-17

申请号：US266237

申请日：1988-10-28

申请人： Manfred Dankowski ,  Willi Hofen

发明人： Manfred Dankowski ,  Willi Hofen

IPC分类号： C07C409/24 ,  C07C67/00 ,  C07C407/00

CPC分类号： C07C407/006 ,  C07C407/003

摘要： A process for desensitization of water insoluble peroxycarboxylic acids with essentially sodium sulfate in the aqueous phase, wherein the desensitized peroxycarboxylic acids is separated from the mother liquor, and the sodium sulfate contained in the mother liquor is isolated by one- or multi-stage crystallization in purified form as the deca (hepta) hydrate and this, directly or after conversion to an aqueous sodium sulfate solution, and/or anhydrous sodium sulfate is returned to the desensitization process. The process is nonpolluting and can be operated safely on the industrial scale. The peroxycarboxylic acids desensitized according to the invention are characterized by lower heavy metal content and high storage stability.

摘要翻译： 在水相中基本上含有硫酸钠的水不溶性过氧羧酸脱敏的方法，其中脱敏的过氧羧酸与母液分离，母液中所含的硫酸钠通过一步或多步结晶分离 纯化形式为十（七）水合物，直接或转化成硫酸钠水溶液后，和/或无水硫酸钠回到脱敏过程。 该工艺无污染，可在工业规模上安全运行。 根据本发明脱敏的过氧羧酸的特征在于较低的重金属含量和高的储存稳定性。

公开(公告)号：US4855465A

公开(公告)日：1989-08-08

申请号：US166784

申请日：1988-03-02

申请人： Andreas Grund ,  Guenter Prescher ,  Georg Boehme ,  Willi Hofen ,  Heinrich Petsch

发明人： Andreas Grund ,  Guenter Prescher ,  Georg Boehme ,  Willi Hofen ,  Heinrich Petsch

IPC分类号： C07D301/14 ,  C07D303/04

CPC分类号： C07D303/04 ,  C07D301/14

摘要： Aliphatic epoxides of the formula: ##STR1## can be prepared in a technically efficient manner from the corresponding olefins by means of perpropionic acid in a benzene solution. The benzene solution can also be 1.5 weight percent of hydrogen peroxide, 1.5 weight percent of water and about 800 ppm of mineral acid.

摘要翻译： 具有下式的脂肪族环氧化物：可以通过在苯溶液中的过丙酸从相应的烯烃以技术上有效的方式制备。 苯溶液也可以是1.5重量％的过氧化氢，1.5重量％的水和约800ppm的无机酸。

公开(公告)号：US20110054197A1

公开(公告)日：2011-03-03

申请号：US12919637

申请日：2008-12-16

申请人： Willi Hofen ,  Claudia Brasse ,  Robert Franke ,  Robert Katzer

发明人： Willi Hofen ,  Claudia Brasse ,  Robert Franke ,  Robert Katzer

IPC分类号： C07D301/12

CPC分类号： C07D301/12 ,  Y02P20/127

摘要： The invention relates too method for the production of epichlorohydrin, wherein a chloropropane-containing ally chloride in excess is reacted in a first reaction stage with hydrogen peroxide. The non-reacted ally chloride is separated and returned to the reaction, wherein part of the separated ally chloride is added to a second reaction stage and reacted with hydrogen peroxide, wherein the hydrogen peroxide quantity is selected in the second reaction stage such that the ally chloride is largely reacted. The chloropropanes are separated from the reaction mixture of the second reaction stage by means of distillation and removed from the process.

摘要翻译： 本发明涉及制备表氯醇的方法，其中过量的含氯丙烷的烯丙基氯在第一反应阶段与过氧化氢反应。 将未反应的烯丙基氯分离并返回反应，其中将部分分离的烯丙基氯加入第二反应阶段并与过氧化氢反应，其中在第二反应阶段选择过氧化氢的量， 氯化物大部分反应。 通过蒸馏将氯丙烷与第二反应阶段的反应混合物分离，并从该方法中除去。

公开(公告)号：US20050148797A1

公开(公告)日：2005-07-07

申请号：US10516319

申请日：2003-06-25

申请人： Bernd Jaeger ,  Thomas Haas ,  Guido Stochniol ,  Christian Lettmann ,  Willi Hofen ,  Klaus Stadtmuller ,  Jorg Lotz

发明人： Bernd Jaeger ,  Thomas Haas ,  Guido Stochniol ,  Christian Lettmann ,  Willi Hofen ,  Klaus Stadtmuller ,  Jorg Lotz

IPC分类号： C07B61/00 ,  C07C209/72 ,  C07C211/36 ,  C07C29/72

CPC分类号： C07C209/72 ,  C07C211/36

摘要： The invention relates to a process for increasing the selectivity of the hydrogenation of 4,4′-diaminodiphenylmethane (4,4′-MDA) to diaminodicyclohexylmethane (4,4′-HMDA) by catalytic hydrogenation of a mixture containing 4,4′-MDA as the main component and its mono-N-methyl derivative as a secondary component. According to the invention, the hydrogenation is terminated before a conversion of 4,4′-MDA to 4,4′-HMDA of 99% is achieved. Under these conditions, a substantially smaller proportion of the N-methyl-4,4′-MDA is hydrogenated to N-methyl-4,4-HMDA.

摘要翻译： 本发明涉及通过催化氢化含有4,4'-二氨基二苯基甲烷（4,4'-MDA）的混合物的方法提高4,4'-二氨基二苯基甲烷（4,4'-MDA） MDA为主要成分，其单-N-甲基衍生物为次要成分。 根据本发明，在将4,4'-MDA转化为99％的4,4'-HMDA之前终止氢化。 在这些条件下，将大部分比例的N-甲基-4,4'-MDA氢化成N-甲基-4,4-HMDA。

公开(公告)号：US06878836B2

公开(公告)日：2005-04-12

申请号：US10839572

申请日：2004-05-05

申请人： Thomas Haas ,  Claudia Brasse ,  Wolfgang Wöll ,  Willi Hofen ,  Bernd Jaeger ,  Guido Stochniol ,  Norbert Ullrich

发明人： Thomas Haas ,  Claudia Brasse ,  Wolfgang Wöll ,  Willi Hofen ,  Bernd Jaeger ,  Guido Stochniol ,  Norbert Ullrich

IPC分类号： C07D301/12 ,  C07D303/04

CPC分类号： C07D303/04 ,  C07D301/12 ,  Y02P20/584

摘要： A process for the continuous epoxidation of propene with hydrogen peroxide in the presence of a titanium silicalite catalyst and a methanol solvent, wherein the catalyst is periodically regenerated by washing with a methanol solvent at a temperature of at least 100° C. and the epoxidation reaction is carried out for periods of more than 300 h between two regeneration steps.

摘要翻译： 一种在钛硅沸石催化剂和甲醇溶剂存在下用过氧化氢连续环氧化丙烯的方法，其中催化剂通过在至少100℃的温度下用甲醇溶剂洗涤并周期性地再生，并且环氧化反应 在两个再生步骤之间进行超过300小时的时间。

公开(公告)号：US06838572B2

公开(公告)日：2005-01-04

申请号：US10669993

申请日：2003-09-24

申请人： Thomas Haas ,  Claudia Brasse ,  Guido Stochniol ,  Willi Hofen ,  Wolfgang Wöll ,  Georg Thiele

发明人： Thomas Haas ,  Claudia Brasse ,  Guido Stochniol ,  Willi Hofen ,  Wolfgang Wöll ,  Georg Thiele

IPC分类号： C01B15/013 ,  C01B15/023 ,  C07D301/12

CPC分类号： C01B15/013 ,  C01B15/023 ,  C07D301/12

摘要： A continuous process for the epoxidation of olefins with hydrogen peroxide in the presence of a heterogeneous catalyst promoting the epoxidation reaction, whereby the aqueous reaction mixture contains i) an olefin; ii) hydrogen peroxide; iii) less than 100 wppm of alkali metals, earth alkali metals, both irrespective whether in ionic, complex or covalently bonded form, bases or cations of bases having a pkB of less than 4.5, or combinations thereof; and, iv) at least 100 wppm of bases or cations of bases having a pkB of at least 4.5 or combinations thereof, whereby the wppm are based on the total weight of hydrogen peroxide in the reaction mixture.

摘要翻译： 在促进环氧化反应的多相催化剂的存在下用过氧化氢环氧化烯烃的连续方法，由此含水反应混合物含有i）烯烃; ii）过氧化氢; iii）小于100wppm的碱金属，碱土金属，无论是在离子，复合或共价键合的形式，碱性或pKB小于4.5的碱的阳离子，或其组合; 和iv）至少100wppm的pkB至少为4.5的碱或碱的阳离子或其组合，其中wppm是基于反应混合物中过氧化氢的总重量。

公开(公告)号：US06749668B2

公开(公告)日：2004-06-15

申请号：US10174549

申请日：2002-06-18

申请人： Willi Hofen ,  Georg Thiele ,  Wolfgang Wöll

发明人： Willi Hofen ,  Georg Thiele ,  Wolfgang Wöll

IPC分类号： B01D5314

CPC分类号： B01D53/14

摘要： A process for the recovery of combustible components of a gas stream containing the combustible components and oxygen by selective absorption of the combustible components in a solvent, whereby during the absorption the gas phase is dispersed in a continuous liquid phase of the solvent. In a preferred embodiment the process is applied to give a process for the epoxidation of propene with hydrogen peroxide in the alcoholic solvent in presence of a catalyst, wherein a gas stream including unreacted propene, propene oxide and oxygen from the decomposition of the hydrogen peroxide is separated from the epoxidation reaction mixture and the combustible components in said gas stream are recovered using the process as described above.

摘要翻译： 通过在溶剂中选择性吸收可燃组分来回收含有可燃组分和氧的气流的可燃组分的方法，由此在吸收期间气相分散在溶剂的连续液相中。 在优选的实施方案中，应用该方法以在催化剂存在下，在醇溶剂中用过氧化氢环氧化丙烯的方法，其中包含未反应的丙烯，氧化丙烯和来自过氧化氢分解的氧的气流是 与环氧化反应混合物分离，并使用上述方法回收所述气流中的可燃组分。

公开(公告)号：US06297408B1

公开(公告)日：2001-10-02

申请号：US09786501

申请日：2001-03-02

申请人： Thomas Haas ,  Bernd Jaeger ,  Joerg Sauer ,  Willi Hofen ,  Rudolf Vanheertum

发明人： Thomas Haas ,  Bernd Jaeger ,  Joerg Sauer ,  Willi Hofen ,  Rudolf Vanheertum

IPC分类号： C07C2704

CPC分类号： C07C29/141 ,  C07C31/205

摘要： A two-stage process for producing 1,3-propanediol by first hydrogenating at a temperature of 30° C. to 80° C. in the presence of an oxide-supported metal hydrogenation catalyst. Second, the resulting reaction solution is hydrogenated at a temperature of 80° C. to 180° C. to a 3-hydroxypropanal conversion of substantially 100% in the presence of an activated carbon-supported metal hydrogenation catalyst.

摘要翻译： 在氧化物负载的金属加氢催化剂的存在下，在30℃至80℃的温度下首先氢化生产1,3-丙二醇的两阶段方法。 其次，将所得反应溶液在80℃至180℃的温度下氢化至在活性炭负载的金属氢化催化剂存在下基本上为100％的3-羟基丙醛转化率

公开(公告)号：US5852219A

公开(公告)日：1998-12-22

申请号：US885045

申请日：1997-06-30

申请人： Joerg Sauer ,  Wolfgang Boeck ,  Lukas von Hippel ,  Werner Burkhardt ,  Stephan Rautenberg ,  Dietrich Arntz ,  Willi Hofen

发明人： Joerg Sauer ,  Wolfgang Boeck ,  Lukas von Hippel ,  Werner Burkhardt ,  Stephan Rautenberg ,  Dietrich Arntz ,  Willi Hofen

IPC分类号： B01J23/04 ,  B01J23/30 ,  B01J35/10 ,  B01J37/02 ,  C07B61/00 ,  C07C319/08 ,  C07C321/04

CPC分类号： B01J23/30 ,  C07C319/08

摘要： A catalyst for the synthesis of methyl mercaptan from hydrogen sulfide and methanol, as well as a process for preparing the catalyst. The catalyst contains active aluminum oxide on which 15% to 40% by weight cesium tungstate is deposited as the activator. The activator, cesium tungstate, gives an unexpected increase in activity and selectivity as compared with potassium tungstate, which is used exclusively at the present state of the art.

摘要翻译： 用于从硫化氢和甲醇合成甲硫醇的催化剂以及制备催化剂的方法。 催化剂含有活性氧化铝，其上沉积了15重量％至40重量％的钨酸铯作为活化剂。 与钨酸钾相比，活化剂钨酸铯在活性和选择性方面出人意料的增加，这是专门用于现有技术的钨酸钾。