公开(公告)号：US20090194001A1

公开(公告)日：2009-08-06

申请号：US12304573

申请日：2007-05-17

申请人： Tomohiro Banda ,  Shogo Koike ,  Takashi Hara

发明人： Tomohiro Banda ,  Shogo Koike ,  Takashi Hara

IPC分类号： C09D5/00

CPC分类号： C07C51/00 ,  C07C53/10 ,  C07C55/06 ,  C07C55/08 ,  C07C55/24 ,  C07C59/06 ,  C07C59/08 ,  C07C59/105 ,  C07C59/245 ,  C07C59/265

摘要： An aqueous solution containing an organic acid chromium (III) salt represented by general formula: Crm(Ax)n, wherein A represents a residue left after proton removal from an organic acid; x represents a charge of A; and m and n represent integers satisfying equation 3m+xn=0, is disclosed. The aqueous solution contains the organic acid chromium (III) salt in a concentration of 6% by weight or higher in terms of Crm(Ax)n, has impurity ion concentrations of Na≦30 ppm, Fe≦20 ppm, Cl≦0.001%, SO4≦0.03%, and NO3≦20 ppm per 20 wt % concentration of Crm(Ax)n, and is substantially free from chromium (VI).

摘要翻译： 含有由通式Crm（Ax）n表示的有机酸铬（III）盐的水溶液，其中A表示在从有机酸中除去质子后残留的残基; x表示A的费用; 并且m和n表示满足式3m + xn = 0的整数。 该水溶液含有以Crm（Ax）n计为6重量％以上的有机酸铬（III）盐，杂质离子浓度为Na <= 30ppm，Fe <= 20ppm，Cl < = 0.001％，SO4 <= 0.03％，NO3 = 20ppm / CrM（Ax）n的浓度为20重量％，并且基本上不含铬（VI）。