公开(公告)号：US4834842A

公开(公告)日：1989-05-30

申请号：US195692

申请日：1988-05-18

申请人： Bernd Langner ,  Peter Stantke ,  Ernst-Friedrich Reinking ,  Gunther Kunst

发明人： Bernd Langner ,  Peter Stantke ,  Ernst-Friedrich Reinking ,  Gunther Kunst

IPC分类号： C25C7/06 ,  C25D21/12 ,  G01N27/416

CPC分类号： C25C7/06 ,  C25D21/12 ,  G01N27/4161 ,  Y10S205/924

摘要： The effectiveness of organic additives acting as inhibitors during the electrolytic deposition of metals from aqueous electrolytes, which contain organic additives for improving the deposition of metal, is electrically measured. In order to permit an improved and more reliable check of the effectiveness of the inhibitor and to permit a controlled supply of makeup inhibitors at the required rate, a partial stream of the electrolyte is supplied to flow at a constant velocity in a measuring cell provided with at least three wire electrodes having a fresh conductor surface, a measuring current of 5 mA to 1.0 A is supplied to the electrodes and is maintained, and the slope of the plotted cathode potential-time curve in the range from 0.1 to 50 minutes is taken as a measure of the effective conecentration of the inhibitor. The method can be used to measure the effective inhibitor concentration in an electrolyte used to electrorefine copper and to measure the effective conecentration of brightener in the electrodeposition of metal.

摘要翻译： 电化学测量了在含有电解质沉积金属的电解沉积金属中的作为抑制剂的有机添加剂的有效性，它含有用于改善金属沉积的有机添加剂。 为了允许对抑制剂的有效性进行改进和更可靠的检查并且允许以所需速率控制供应化妆抑制剂，将电解质的部分流供给以恒定的速度流动， 将具有新鲜导体表面的至少三根线电极，5mA至1.0A的测量电流供应到电极并保持，并绘制阴极电势 - 时间曲线的斜率在0.1至50分钟的范围内 作为抑制剂有效凝固的量度。 该方法可用于测量用于电解铜的电解质中的有效抑制剂浓度，并测量金属电沉积中增白剂的有效配位。

公开(公告)号：US5817855A

公开(公告)日：1998-10-06

申请号：US755499

申请日：1996-11-22

申请人： Bernd Langner ,  Peter Stantke ,  Thomas Leister ,  Matthias-Sven Steiner ,  Bruno Degen ,  Wolfgang Schartau ,  Elke Licht

发明人： Bernd Langner ,  Peter Stantke ,  Thomas Leister ,  Matthias-Sven Steiner ,  Bruno Degen ,  Wolfgang Schartau ,  Elke Licht

IPC分类号： B01J23/72 ,  B01J23/76 ,  B01J37/00 ,  C07B61/00 ,  C07F7/16

CPC分类号： B01J37/0072 ,  B01J23/72 ,  C07F7/16 ,  B01J23/76 ,  B01J37/0081

摘要： The invention relates to copper-based catalysts, processes for their production and their use and to a process for the production of alkyl halosilanes in the presence of said catalysts.

摘要翻译： 本发明涉及铜基催化剂，其制备方法及其用途以及在所述催化剂存在下制备烷基卤代硅烷的方法。

公开(公告)号：US5707420A

公开(公告)日：1998-01-13

申请号：US534038

申请日：1995-09-26

申请人： Bernd E. Langner ,  Peter Stantke ,  Rene-Holger Wilde

发明人： Bernd E. Langner ,  Peter Stantke ,  Rene-Holger Wilde

IPC分类号： B22F9/22 ,  C22C1/10 ,  C22C32/00 ,  B22F9/26

CPC分类号： C22C32/0021 ,  C22C1/1026

摘要： The copper powder contains at least one substance, which is not soluble in copper, e.g. Al.sub.2 O.sub.3, TiO.sub.2, SiO.sub.2 or B.sub.2 O.sub.3. For the production of this copper powder, a surplus of copper metal granulate is mixed with an ammonium salt and/or ammonium hydroxide, together with a saline solution in an aqueous solution, while a gas containing oxygen is added, and at a pH-value of at least 4. A copper-containing precipitate is produced, which is separated and treated at a temperature in the range from 150.degree. to 500.degree. C. in a reducing atmosphere. During this process, Cu(OH).sub.2 and Cu-oxide are transformed into metallic copper powder, which contains the dispersoid. The dispersoid content of the copper powder is preferably in the range from 0.1 to 5% by weight.

摘要翻译： 铜粉含有至少一种不溶于铜的物质，例如， Al2O3，TiO2，SiO2或B2O3。 为了制造该铜粉，将多余的铜金属颗粒与铵盐和/或氢氧化铵一起与盐水溶液在水溶液中混合，同时加入含氧的气体，并且在pH值 产生含铜沉淀物，其在还原气氛中在150℃至500℃的温度下分离和处理。 在此过程中，Cu（OH）2和Cu氧化物转变成含有分散质的金属铜粉。 铜粉末的分散质含量优选为0.1〜5重量％。