Invention Grant
- Patent Title: Aqueous solution of chromium salt and method for producing same
- Patent Title (中): 铬盐水溶液及其制备方法
-
Application No.: US10578626Application Date: 2004-11-22
-
Publication No.: US07641721B2Publication Date: 2010-01-05
- Inventor: Hideki Kotaki , Tomohiro Banda , Takashi Hara , Nobuo Takagi
- Applicant: Hideki Kotaki , Tomohiro Banda , Takashi Hara , Nobuo Takagi
- Applicant Address: JP Tokyo
- Assignee: Nippon Chemical Industrial Co., Ltd.
- Current Assignee: Nippon Chemical Industrial Co., Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Smith Patent Office
- Priority: JP2003-412589 20031210; JP2004-132079 20040427; JP2004-142871 20040512; JP2004-259046 20040906
- International Application: PCT/JP2004/017353 WO 20041122
- International Announcement: WO2005/056478 WO 20050623
- Main IPC: C23C22/05
- IPC: C23C22/05 ; C23C30/00 ; C23F11/00 ; C23F11/12 ; C01B9/02
Abstract:
Disclosed is an aqueous solution of a chromium salt, in which the oxalic acid content is 8% by weight or less relative to chromium. In the aqueous solution of the chromium salt, the total organic carbon content is 4% by weight or less relative to chromium. The chromium salt is preferably a chromium chloride, a chromium phosphate, or a chromium nitrate. The chromium chloride preferably contains a basic chromium chloride represented by the composition formula Cr(OH)xCly (wherein 0
Public/Granted literature
- US20070086938A1 Aqueous solution of chromium salt and method for producing same Public/Granted day:2007-04-19
Information query
IPC分类:
