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    Twin-wire former for the production of a web of paper
    1.
    发明授权
    Twin-wire former for the production of a web of paper 失效
    用于生产纸张的双线成型机

    公开(公告)号：US5019214A

    公开(公告)日：1991-05-28

    申请号：US451818

    申请日：1989-12-15

    申请人： Albrecht Meinecke ,  Dieter Egelhof ,  Wilfried Weiss

    发明人： Albrecht Meinecke ,  Dieter Egelhof ,  Wilfried Weiss

    IPC分类号： D21F9/00

    CPC分类号： D21F9/003

    摘要： A twin-wire former for the production of a web of paper from a fiber suspension. An upper endless loop of wire belt having a lower horizontal run and a lower endless loop wire belt having an upper horizontal run. Guide rolls support the wire belts to define a twin-wire zone. The upstream inlet wedge of the twin-wire zone is disposed at the outlet from a head box. The initial part of the path of the twin-wire zone has a gradual curvature convexly with respect to the lower wire belt, and in that initial portion are positioned guide tables, suction boxes and dewatering elements. This curved initial part is followed by a forming roll within the loop of the upper wire belt. The twin-wires wrap an arcuate sector of the lower region of the forming roll. A support roll follows the forming roll. The support roll is upraised sufficiently to wrap the twin-wires around the bottom of the forming roll and over an arcuate sector at the top of the support roll. Following the support roll, the upper wire separates from the lower wire. In the continuing generally horizontal, slightly descending path of the lower wire with the web on it are disposed a plurality of suction boxes and a lower wire suction roll to define a final dewatering path after the twin-wire zone.

    摘要翻译： 一种用于从纤维悬浮液生产纸幅的双线成型机。 具有较低水平行程的电线带的上部无限循环和具有上部水平行程的下部无端环线缆带。 导辊支撑钢丝绳带以限定双线区域。 双线区域的上游入口楔设置在头箱的出口处。 双线区域的路径的初始部分相对于下部电缆带呈凸起的渐变曲线，并且在该初始部分中定位有引导台，抽吸箱和脱水元件。 该弯曲的初始部分之后是在上部线带的环内的成形辊。 双丝缠绕成形辊的下部区域的弓形部分。 支撑辊跟随成型辊。 支撑辊被充分地升高以将双网包裹在成形辊的底部周围并且在支撑辊的顶部的弓形部分上方。 在支撑辊之后，上部电线与下部电线分离。 在其上具有腹板的下部丝线的连续大致水平的稍微下降的路径中设置有多个抽吸盒和下部线抽吸辊，以在双网区域之后限定最终脱水路径。

    Method of making a stable non-pyrophoric lithium diorganoamide solution
    8.
    发明授权
    Method of making a stable non-pyrophoric lithium diorganoamide solution 失效
    制备稳定的非自发性锂二有机酰胺溶液的方法

    公开(公告)号：US5574197A

    公开(公告)日：1996-11-12

    申请号：US311525

    申请日：1994-09-23

    申请人： Wilfried Weiss ,  Ulrich Wietelmann ,  Uwe Lischka ,  Ute Emmel

    发明人： Wilfried Weiss ,  Ulrich Wietelmann ,  Uwe Lischka ,  Ute Emmel

    IPC分类号： C07F1/02 ,  C07F1/00 ,  C07C7/20 ,  C01D15/00

    CPC分类号： C07F1/005

    摘要： The method of making the stable non-pyrophoric solution containing a lithium diorganoamide of the formula, LiNR'R" wherein R' and R" each have from 2 to 6 carbon atoms, in an inert liquid hydrocarbon solvent includes mixing a secondary amine including the R' and R" groups and an alcohol having 3 to 6 carbon atoms with a lithium granulate or powder in the hydrocarbon solvent and reacting the secondary amine, the alcohol and the lithium with addition of an electron acceptor compound, advantageously styrene or isobutene, to form the stable non-pyrophoric solution containing the lithium diorganoamide and a lithium alkoxide having 3 to 6 carbon atoms.

    摘要翻译： 在惰性液体烃溶剂中制备含有下式的二锂二胺的稳定的非自燃溶液的方法：其中R'和R“各自具有2-6个碳原子的LiNR'R”，包括将仲胺 包括R'和R“基团和具有3至6个碳原子的醇，在烃溶剂中具有锂颗粒或粉末，并且通过加入电子受体化合物使仲胺，醇和锂反应，有利地是苯乙烯或 异丁烯，形成含有二有机酰胺锂和碳原子数3〜6的醇锂的稳定的非自燃溶液。

    Process for producing alkali metal alcoholates
    9.
    发明授权
    Process for producing alkali metal alcoholates 失效
    碱金属醇化物的制备方法

    公开(公告)号：US4895989A

    公开(公告)日：1990-01-23

    申请号：US217759

    申请日：1988-07-11

    申请人： Ulrich Sander ,  Pavel Soukup ,  Harald Helmrich ,  Wilfried Weiss

    发明人： Ulrich Sander ,  Pavel Soukup ,  Harald Helmrich ,  Wilfried Weiss

    IPC分类号： B01D61/36 ,  C07C27/00 ,  C07C29/70 ,  C07C29/76 ,  C07C29/80 ,  C07C31/30 ,  C07C67/00

    CPC分类号： C07C29/70 ,  C07C29/76 ,  Y10S203/06 ,  Y10S203/14

    摘要： A process is described for the production of alcoholates from alkali metal hydroxides and aliphatic alcohol which in their molecule contain 1 to 6 carbon atoms. The alcoholates are produced in that alkali metal hydroxide is mixed with an alcohol and is reacted with said alcohol at a temperature from 80.degree. to 110.degree. C., preferably from 80.degree. to 100.degree. C., and under a pressure from 0.3 to 1.2 bars, the alcohol water mixture which evaporates during the reaction is separated into its components by at least one membrane, the alcohol vapor and the water vapor are condensed and the condensed alcohol is recycled to the reaction.

    摘要翻译： 描述了从其分子中含有1至6个碳原子的碱金属氢氧化物和脂族醇生产醇化物的方法。 产生醇化物的方法是将碱金属氢氧化物与醇混合，并与所述醇在80-110℃，优选80-100℃的温度和0.3-1.2的压力下反应 酒吧，在反应期间蒸发的醇水混合物通过至少一个膜分离成其组分，醇蒸气和水蒸气冷凝，并将冷凝的醇再循环到反应中。

    Process for the preparation of pure aryllithium compounds and their use
    10.
    发明授权
    Process for the preparation of pure aryllithium compounds and their use 有权
    纯芳基锂化合物的制备方法及其用途

    公开(公告)号：US07794632B2

    公开(公告)日：2010-09-14

    申请号：US11725614

    申请日：2007-03-20

    申请人： Ute Emmel ,  Wilfried Weiss ,  Ulrich Wietelmann ,  Dirk Dawidowski

    发明人： Ute Emmel ,  Wilfried Weiss ,  Ulrich Wietelmann ,  Dirk Dawidowski

    IPC分类号： C07F1/02

    CPC分类号： C07F1/02

    摘要： A process is described for preparing aryllithium compounds by reaction of metallic lithium in an ether-containing solvent with an aryl halide, wherein prior to or at the beginning of the reaction a catalyst is added, the catalyst containing a halogen-free, polynuclear aromatic (aryl catalyst) or consisting of such a compound.

    摘要翻译： 描述了通过在含醚溶剂中的金属锂与芳基卤化物反应来制备芳基锂化合物的方法，其中在反应之前或开始时加入催化剂，所述催化剂含有无卤素的多核芳族（ 芳基催化剂）或由这种化合物组成。