基本信息:
- 专利标题： 크롬(Ⅲ)함유 수용액 및 그의 제조 방법
- 专利标题（英）：Chromium (iii)-containing aqueous solution and process for production of same
- 专利标题（中）：铬（III） - 水溶液及其生产方法
- 申请号：KR1020117007802 申请日：2009-08-27
- 公开(公告)号：KR1020110052734A 公开(公告)日：2011-05-18
- 发明人： 반다,토모히로 , 쿠와노,히로유키
- 申请人： 니폰 가가쿠 고교 가부시키가이샤
- 申请人地址： **-*, Kameido *-chome, Koto-ku, Tokyo *******, Japan
- 专利权人： 니폰 가가쿠 고교 가부시키가이샤
- 当前专利权人： 니폰 가가쿠 고교 가부시키가이샤
- 当前专利权人地址： **-*, Kameido *-chome, Koto-ku, Tokyo *******, Japan
- 代理人： 권혁수; 오세준; 송윤호
- 优先权： JPJP-P-2008-229099 2008-09-05; JPJP-P-2008-229100 2008-09-05; JPJP-P-2008-229101 2008-09-05
- 国际申请： PCT/JP2009/064961 2009-08-27
- 国际公布： WO2010026916 2010-03-11
- 主分类号： C01G37/00
- IPC分类号： C01G37/00 ; C23C22/48 ; C25D3/06 ; C25D3/10
Can control a broad range of mole ratio of gakjok acid radicals for the chrome, and also, in the surface treatment of various metals, bath to trivalent chromium-or trivalent aqueous solution containing chromium (III) is useful as a supplemental source of chromium of (浴), by the presence of two or more acids selected from inorganic and organic acids other than chromic acid are added simultaneously or sequentially, provides a chromium (III) containing an aqueous solution comprising a complex chromium (III) salt formed by performing the reduction of chromic acid . Moreover, chromic acid, is contacted in acid and / or water solvent, an organic reducing agent other than chromic acid, by performing the reduction of chromic acid chromium (III) a process for producing the aqueous solution containing, at least as the acid other than chromic acid selected from inorganic and organic acids of two or more acids in a state in which there are added simultaneously or sequentially, provides a chromium (III) preparation of aqueous solution, characterized in that for performing chromic acid reduction reaction.