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20 条记录 (耗时 0.033 秒)

    Method for producing esters of multibasic acids
    15.
    发明授权
    Method for producing esters of multibasic acids 有权
    生产多元酸酯的方法

    公开(公告)号：US07385075B2

    公开(公告)日：2008-06-10

    申请号：US10416465

    申请日：2001-11-13

    申请人： Walter Disteldorf ,  Günther Golfier ,  Bernd Morsbach ,  Kurt Schwirten

    发明人： Walter Disteldorf ,  Günther Golfier ,  Bernd Morsbach ,  Kurt Schwirten

    IPC分类号： C07C69/76

    CPC分类号： C07C67/08 ,  C07C67/54 ,  C07C69/44 ,  C07C69/80

    摘要： A process is described for preparing esters of an acid component selected from among polybasic C4-C10 carboxylic acids and an alcohol component selected from among C3-C12 alkanols or from among C3-C12 alkanediols, the alkyl chain of which may have interruption by from 1 to 3 oxygen atoms, by a) heating at boiling point, in a reaction zone and in the presence of an esterification catalyst, a mixture essentially consisting of the acid component or of an anhydride thereof and of the alcohol component, b) using rectification to separate the vapor comprising alcohol and water into an alcohol-rich fraction and a water-rich fraction, and c) returning the alcohol-rich fraction into the reaction zone and conducting the water-rich fraction out of the process. The process is simple to carry out and permits rapid achievement of essentially quantitative conversion.

    摘要翻译： 描述了一种制备选自多元醇C 4 -C 10羧酸和选自C 3 -C 10羧酸的醇组分的酸组分的酯的方法， C 1 -C 12烷醇或C 3 -C 12烷二醇，其烷基链可能具有中断1至3个 氧原子，通过a）在沸点加热，在反应区和酯化催化剂存在下，基本上由酸组分或其酸酐和醇组分组成的混合物，b）使用精馏将 将含有醇和水的蒸汽加入富含醇的馏分和富含水的馏分中，以及c）将富含醇的馏分返回到反应区中，并将富含水的馏分导出该过程。 该过程很简单，可以快速实现基本的定量转化。

    Lowering of the nitrogen oxide levels in exhaust gases by controlled addition of NH.sub.3
    16.
    发明授权
    Lowering of the nitrogen oxide levels in exhaust gases by controlled addition of NH.sub.3 失效
    通过控制添加NH3降低废气中的氮氧化物含量

    公开(公告)号：US6004524A

    公开(公告)日：1999-12-21

    申请号：US014407

    申请日：1993-02-05

    申请人： Bernd Morsbach ,  Helmut Daudel ,  Uwe Gaertner

    发明人： Bernd Morsbach ,  Helmut Daudel ,  Uwe Gaertner

    IPC分类号： B01D53/30 ,  B01D53/94 ,  F01N3/20 ,  F02B3/06 ,  B01J8/00

    CPC分类号： F01N11/00 ,  B01D53/30 ,  B01D53/9409 ,  B01D53/9495 ,  F01N3/208 ,  F01N2560/026 ,  F01N2560/06 ,  F01N2570/18 ,  F01N2610/02 ,  F01N2610/146 ,  F01N2900/0421 ,  F01N2900/08 ,  F01N2900/14 ,  F01N2900/1622 ,  F02B3/06 ,  Y02T10/24 ,  Y02T10/47

    摘要： A process for selective catalytic reduction of nitrogen oxides from exhaust gases, preferably those from diesel engines in vehicles, using pulsed superstoichiometric addition of NH.sub.3 or NH.sub.3 -releasing substances, comprises controlling the pulsed superstoichiometric addition of NH.sub.3 in such a way that, after it has started, the addition is interrupted again only when the amount of NH.sub.3 stored in the catalyst has reached a specific upper threshold value which is predetermined in accordance with the catalyst properties and the catalyst volume, the amount of NH.sub.3 stored being calculated from the difference between the metered amount of NH.sub.3 and the amount of NO.sub.x separated off, which is determined from the NO.sub.x concentration in the exhaust gas and the average degree of separation, and the addition of NH.sub.3 is resumed only when the amount of NH.sub.3 stored in the catalyst, which is determined in the same way, has reached a predetermined lower threshold value, this pulsed addition of NH.sub.3 being interrupted after a predetermined number of cycles until the amount of NH.sub.3 stored in the catalyst, which is determined in the manner described, has completely reacted, this completing one entire cycle of the pulsed addition of NH.sub.3.

    摘要翻译： 使用脉冲超化学计量添加NH 3或NH 3释放物质，从废气中选择性催化还原氮氧化物的方法，优选来自车辆中来自柴油发动机的氮氧化物的方法包括控制NH 3的脉冲超化学计量添加，使得其具有 开始时，仅当存储在催化剂中的NH 3的量已经达到根据催化剂性质和催化剂体积预定的特定上限阈值时再次中断，存储的NH 3量根据 NH 3的计量量和分解的NOx量，其由废​​气中的NOx浓度和平均分离度确定，并且只有当存储在催化剂中的NH 3的量是 以相同的方式确定，已经达到预定的较低阈值，NH 3的脉冲加成被中断 在预定数量的循环之后，直到以所述方式确定的催化剂中存储的NH 3的量已经完全反应，这完成了脉冲加入NH 3的整个循环。

    Mixture of diesters of adipic or phthalic acid with isomers of nonanols
    18.
    发明授权
    Mixture of diesters of adipic or phthalic acid with isomers of nonanols 有权
    己二酸或邻苯二甲酸二酯与壬醇异构体的混合物

    公开(公告)号：US06437170B1

    公开(公告)日：2002-08-20

    申请号：US09449395

    申请日：1999-11-26

    申请人： Lucien Thil ,  Boris Breitscheidel ,  Walter Disteldorf ,  Edgar Zeller ,  Marc Walter ,  Bernd Morsbach ,  Knut Dornik

    发明人： Lucien Thil ,  Boris Breitscheidel ,  Walter Disteldorf ,  Edgar Zeller ,  Marc Walter ,  Bernd Morsbach ,  Knut Dornik

    IPC分类号： C07C6976

    CPC分类号： C08K5/11 ,  C07C67/08 ,  C07C69/44 ,  C07C69/80 ,  C08K5/05 ,  C08K5/12 ,  C08L27/06

    摘要： The mixture described is a mixture of isomeric nonanol diesters of a dicarboxylic acid, selected from the class consisting of a mixture of diesters of adipic acid in the 1H NMR spectrum of which, observed in CDCl3, the ratio of the area under the resonance signals at chemical shifts in the range from 1.0 to 2.0 ppm with respect to TMS to the area under the resonance signals at chemical shifts in the range from 0.5 to 1.0 ppm with respect to TMS is from 1.20 to 5.00 and a mixture of diesters of phthalic acid, in the 1H NMR spectrum of which, observed in CDCl3, the ratio of the area under the resonance signals at chemical shifts in the range from 1.1 to 3.0 ppm with respect to TMS to the area under the resonance signals at chemical shifts in the range from 0.5 to 1.1 ppm with respect to TMS is from 1.00 to 4.00. The diesters of adipic and phthalic acid are suitable as plasticizers for PVC-based molding compositions and have high compatibility, a low cold crack temperature, low torsional rigidity and/or high thermal stability.

    摘要翻译： 所述的混合物是二羧酸的异构壬醇二酯的混合物，其选自在1 H NMR光谱中己二酸二酯的混合物，其在CDCl 3中观察到的共振信号下的面积比例 相对于TMS，1.0〜2.0ppm范围内的化学位移相对于TMS，化学位移为0.5〜1.0ppm的共振信号下的面积为1.20〜5.00，邻苯二甲酸二酯， 在1H NMR谱中，在CDCl3中观察到，在化学位移下的共振信号下的面积相对于TMS的1.1至3.0ppm范围内的化学位移下的共振信号下的面积的比例在 己二酸和邻苯二甲酸的二酯适用于PVC基成型组合物的增塑剂，具有高相容性，低冷裂纹温度，低扭转度 刚性和/或高热稳定性。