公开(公告)号：US20110168299A1

公开(公告)日：2011-07-14

申请号：US13062469

申请日：2009-08-24

申请人： Shigeo Hoshino ,  Ryokichi Shimpo ,  Yasuyuki Tanaka

发明人： Shigeo Hoshino ,  Ryokichi Shimpo ,  Yasuyuki Tanaka

IPC分类号： C23C22/30

CPC分类号： C25D3/06 ,  B82Y30/00 ,  C01G37/02 ,  C01P2004/62 ,  C01P2004/64 ,  C23C22/46 ,  C23C2222/10 ,  C25D3/10

摘要： In a method for manufacturing an aqueous solution containing a source of chromium (III) according to the present invention, an aqueous solution containing trivalent chromium is added to an aqueous solution of an inorganic alkali under the condition of a reaction liquid temperature of 0° C. or more and less than 50° C., so that the amount of the trivalent chromium is not locally excessive with respect to the amount of the alkali, to produce chromium hydroxide, and then the chromium hydroxide is dissolved in an aqueous solution of an acid to obtain an aqueous solution containing a source of chromium (III). Preferably, after production of the chromium hydroxide, filtration is performed, and the chromium hydroxide is washed with water until the conductivity of the filtrate is 5 mS/cm or less.

摘要翻译： 在含有本发明的铬（III）源的水溶液的制造方法中，在反应液温度为0℃的条件下，向无机碱的水溶液中添加含有3价铬的水溶液 以上且小于50℃，使得三价铬的量相对于碱的量不会局部过量，生成氢氧化铬，然后将氢氧化铬溶解在 酸以得到含有铬（III）源的水溶液。 优选地，在生产氢氧化铬之后，进行过滤，用水洗涤氢氧化铬直到滤液的电导率为5mS / cm以下。

公开(公告)号：US20100116679A1

公开(公告)日：2010-05-13

申请号：US12595391

申请日：2008-03-26

申请人： Shigeo Hoshino ,  Ryokichi Shimpo ,  Yasuyuki Tanaka

发明人： Shigeo Hoshino ,  Ryokichi Shimpo ,  Yasuyuki Tanaka

IPC分类号： C25D3/06 ,  C25D3/04 ,  C01G37/02 ,  B32B5/16

CPC分类号： C01G37/02 ,  B82Y30/00 ,  C01P2004/03 ,  C01P2004/04 ,  C01P2004/51 ,  C01P2004/62 ,  C01P2004/64 ,  C01P2006/80 ,  C25D3/06 ,  C25D21/14 ,  Y10T428/2982

摘要： Chromium hydroxide of the invention has an average particle size D determined from a scanning electron micrograph of 40 to 200 nm and a degree of agglomeration of 10 and more and less than 70, the degree of agglomeration being defined to be a ratio of a volume average particle size D50 determined with a particle size analyzer to the average particle size D, D50/D. The chromium hydroxide is suitably obtained by adding an aqueous solution containing trivalent chromium to an aqueous solution of an inorganic alkali at a reaction temperature of 0° C. or higher and lower than 50° C. The inorganic alkali is preferably an alkali metal hydroxide.

摘要翻译： 本发明的氢氧化铬的平均粒径D由扫描电子显微镜照片测定为40〜200nm，凝聚度为10以上且小于70，聚集度为体积平均值 颗粒尺寸D50用粒度分析仪确定为平均粒径D，D50 / D。 在0℃以上且低于50℃的反应温度下，通过向无机碱的水溶液中加入含有3价铬的水溶液来适当地得到氢氧化铬。无机碱优选为碱金属氢氧化物。