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    Process for producing aromatic amines
    4.
    发明授权
    Process for producing aromatic amines 失效
    生产芳香胺的方法

    公开(公告)号：US5808157A

    公开(公告)日：1998-09-15

    申请号：US511165

    申请日：1995-08-04

    申请人： Reinhard Langer ,  Hans-Josef Buysch ,  Paul Wagner ,  Ursula Pentling

    发明人： Reinhard Langer ,  Hans-Josef Buysch ,  Paul Wagner ,  Ursula Pentling

    IPC分类号： B01J23/648 ,  B01J23/44 ,  B01J23/64 ,  C07B61/00 ,  C07C209/36 ,  C07C211/44 ,  C07C211/45 ,  C07C211/46 ,  C07C211/47 ,  C07C211/49 ,  C07C209/04

    CPC分类号： C07C209/36

    摘要： Aromatic amines are produced by hydrogenation of the associated aromatic nitro compounds in the gas phase over fixed catalysts. The catalysts contain active hydrogenation metals on supports. The reaction is conducted at a pressure of 2-50 bar and at a temperature in the range 250.degree.-500.degree. C. under adiabatic conditions. A circulating gas is passed over the catalyst, which circulating gas contains 3-150 moles of hydrogen, 2-100 moles of the amino groups to be formed per mole of nitro groups, and 2 to 6 moles of water per amino group equivalent. The amine and water formed, as well as a purification stream, are separated from the circulating gas. Thereafter the circulating gas is enriched with volatilised aromatic nitro compound and fresh hydrogen and recycled.

    摘要翻译： 通过在气相中通过固定催化剂氢化相关联的芳族硝基化合物来生产芳族胺。 催化剂在载体上含有活性氢化金属。 反应在绝热条件下，在2-50巴的压力和250-500℃的温度下进行。 循环气体通过催化剂，循环气体含有3-150摩尔氢，每摩尔硝基形成2-100摩尔氨基和每个氨基当量2-6摩尔水。 所形成的胺和水以及净化物流与循环气体分离。 此后，循环气体富含挥发的芳​​香硝基化合物和新鲜氢气并再循环。

    Hydrated niobium oxide and hydrated tantalum oxide catalysts, their preparation and a process for preparing N-alkylated anilines using these catalysts
    5.
    发明授权
    Hydrated niobium oxide and hydrated tantalum oxide catalysts, their preparation and a process for preparing N-alkylated anilines using these catalysts 失效
    水合铌氧化物和水合氧化钽催化剂，它们的制备和使用这些催化剂制备N-烷基化苯胺的方法

    公开(公告)号：US5593936A

    公开(公告)日：1997-01-14

    申请号：US410466

    申请日：1995-03-24

    申请人： Volker Glock ,  Ursula Pentling ,  Bernd Pennemann ,  Joerg-Dietrich Jentsch ,  Eberhard Zirngiebl ,  Horst Koller

    发明人： Volker Glock ,  Ursula Pentling ,  Bernd Pennemann ,  Joerg-Dietrich Jentsch ,  Eberhard Zirngiebl ,  Horst Koller

    IPC分类号： B01J23/20 ,  B01J35/10 ,  C07C209/18 ,  C07C211/48

    CPC分类号： B01J23/20 ,  B01J35/108 ,  C07C209/18

    摘要： New hydrated niobium oxide and hydrated tantalum oxide catalysts containing pores having diameters in the range from 0.4 to 10,000 nm are characterized in that the volume of the pores of the catalyst having a diameter of from 100 to 1000 nm is at least 30% of the total pore volume of the catalyst. The catalysts can be prepared by mixing hydrated niobium oxide or hydrated tantalum oxide with an inert solid and converting this mixture into a solid pellet form, with the pressure in the apparatus for preparing catalysts in pellet form being set in such a way that the volume of the pores of the catalyst having a diameter of from 100 to 1000 nm is at least 30% of the total pore volume of the catalyst. Such catalysts are particularly suitable for preparing N-alkylanilines from anilines and alkanols.

    摘要翻译： 新型水合铌氧化物和含有直径在0.4至10,000nm范围内的孔的水合氧化钽催化剂的特征在于直径为100至1000nm的催化剂的孔的体积至少为总量的30％ 催化剂的孔体积。 催化剂可以通过将水合铌氧化物或水合氧化钽与惰性固体混合并将该混合物转化为固体颗粒形式来制备，其中用于制备颗粒形式的催化剂的装置中的压力设定为使得 直径为100〜1000nm的催化剂的孔隙为催化剂总孔体积的至少30％。 这种催化剂特别适用于从苯胺和链烷醇制备N-烷基苯胺。

    Process for the preparation of polymers having recurring agents
    6.
    发明授权
    Process for the preparation of polymers having recurring agents 失效
    制备具有复发剂的聚合物的方法

    公开(公告)号：US6054553A

    公开(公告)日：2000-04-25

    申请号：US745812

    申请日：1996-11-12

    申请人： Torsten Groth ,  Winfried Joentgen ,  Frank Dobert ,  Klaus-Peter Heise ,  Thomas Menzel ,  Ursula Pentling ,  Hans-Georg Pirkl ,  Paul Wagner ,  Joergen Weinschenck

    发明人： Torsten Groth ,  Winfried Joentgen ,  Frank Dobert ,  Klaus-Peter Heise ,  Thomas Menzel ,  Ursula Pentling ,  Hans-Georg Pirkl ,  Paul Wagner ,  Joergen Weinschenck

    IPC分类号： C08G73/10 ,  C08G69/26

    CPC分类号： C08G73/1092

    摘要： Polymers having recurring succinyl units are obtained by an improved process by reaction of A, an unsaturated C.sub.4 -dicarboxylic acid or a derivative thereof, with B, a nitrogen-donating compound, in a first reaction step to give a reaction mixture comprising at least one low molecular weight reaction product, and subsequent continuous feeding of the reaction mixture into a continuously operated reactor to give the polymer in a second reaction step. In a further embodiment the invention refers to polymers having recurring succinyl units prepared by reaction of an unsaturated C.sub.4 -dicarboxylic acid or a derivative thereof with a nitrogen-donating compound in a first reaction step and subsequent feeding of the reaction mixture, without intermediate isolation, into an optionally continuously operated reactor, with removal of water, and treatment of the reaction mixture at a temperature of 140 to 350.degree. C.

    摘要翻译： 具有重复琥珀酰基单元的聚合物通过在第一反应步骤中通过使A，不饱和C4-二羧酸或其衍生物与B（一种供氮化合物）的反应而得到的改进方法获得，得到包含至少一种 低分子量反应产物，随后将反应混合物连续进料到连续操作的反应器中，以在第二反应步骤中得到聚合物。 在另一个实施方案中，本发明涉及具有重复的琥珀酰基单元的聚合物，其通过不饱和C4-二羧酸或其衍生物与供氮化合物在第一反应步骤中反应而制备，随后进料反应混合物，无需中间分离， 进入任选连续操作的反应器中，除去水，并在140至350℃的温度下处理反应混合物。

    Process for separating mixtures of m- and p-dichlorobenzene
    8.
    发明授权
    Process for separating mixtures of m- and p-dichlorobenzene 失效
    分离对 - 二氯苯混合物的方法

    公开(公告)号：US5386067A

    公开(公告)日：1995-01-31

    申请号：US252154

    申请日：1994-06-01

    申请人： Ursula Pentling ,  Hans-Josef Buysch ,  Lothar Puppe ,  Kai Rohlk ,  Rolf Grosser ,  Hans-Ingolf Paul

    发明人： Ursula Pentling ,  Hans-Josef Buysch ,  Lothar Puppe ,  Kai Rohlk ,  Rolf Grosser ,  Hans-Ingolf Paul

    IPC分类号： B01D15/00 ,  B01D15/04 ,  C07C17/38 ,  C07C17/389 ,  C07C25/08

    CPC分类号： C07C17/389

    摘要： Mixtures of m- and p-dichlorobenzene can be separated by treating such mixtures in the liquid phase with a pentasil zeolite at from 20.degree. to 250.degree. C., a filtrate enriched in m-dichlorobenzene being removed and the p-dichlorobenzene being obtained by desorption of the pentasil zeolite. The pentasil zeolites may contain, as exchangeable cations, protons, cations of the first or second main group of the Mendeleev Periodic System, cations of the rare earth metals or a mixture of a plurality thereof. In order to prepare the liquid phase a solvent is used that belongs to the group of cyclic saturated hydrocarbons having 5 to 15 carbon atoms, alkyl-substituted aromatic hydrocarbons having 8 to 12 carbon atoms, and halogen-substituted aromatic hydrocarbons having 6 to 10 carbon atoms and 1 to 3 halogen atoms. The solvents ethylbenzene, chlorobenzene, p-xylene, p-chlorotoluene and dichlorobenzene are excepted. A mixture of a plurality of these solvents may also be used.

    摘要翻译： 可以通过在20至250℃下用pentasil沸石处理液相中的这种混合物来分离对 - 二氯苯的混合物，除去富含间二氯苯的滤液，将对二氯苯由 五硅沸石的解吸。 戊二烯沸石可以包含作为可交换阳离子的质子，门多列夫周期系统的第一或第二主要组分的阳离子，稀土金属的阳离子或其多个混合物。 为了制备液相，使用属于具有5至15个碳原子的环状饱和烃基团，具有8至12个碳原子的烷基取代的芳族烃和具有6至10个碳原子的卤素取代的芳族烃的溶剂 原子和1至3个卤素原子。 溶剂乙苯，氯苯，对二甲苯，对氯甲苯和二氯苯除外。 也可以使用多种这些溶剂的混合物。