Invention Grant
- Patent Title: Method for preparing barium-titanate based powder
- Patent Title (中): 制备钛酸钡基粉末的方法
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Application No.: US10486695Application Date: 2002-05-06
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Publication No.: US07179441B2Publication Date: 2007-02-20
- Inventor: Jae Chul Jung , Woo Young Yang , Keon Il Kim , Yun Jung Park , Jun Hee Lee , Kang Heon Hur , Seon Cheol Park , Jai Joon Lee
- Applicant: Jae Chul Jung , Woo Young Yang , Keon Il Kim , Yun Jung Park , Jun Hee Lee , Kang Heon Hur , Seon Cheol Park , Jai Joon Lee
- Applicant Address: KR KR
- Assignee: Samsung Fine Chemicals Co., Ltd.,Samsung Electro-Mechanics Co., Ltd.
- Current Assignee: Samsung Fine Chemicals Co., Ltd.,Samsung Electro-Mechanics Co., Ltd.
- Current Assignee Address: KR KR
- Agency: Merchant & Gould
- Priority: KR2001-49048 20010814
- International Application: PCT/KR02/00836 WO 20020506
- International Announcement: WO03/016219 WO 20030227
- Main IPC: C01F11/00
- IPC: C01F11/00 ; C01G23/00
Abstract:
The present invention relates to a method for preparing barium titanate based powder. More particularly, the present invention provides a method for preparing barium titanate powder comprising the following steps of precipitation of barium titanyl oxalate (BaTiO(C2O4)2.4H2O) with spraying a mixture of an aqueous barium chloride (BaCl2.2H2O) and titanium tetrachloride (TiCl4) to an aqueous solution of oxalic acid, via a nozzle; wet pulverization by using a beads mill after adding an additive such as an amine; dry; pyrolysis; and re-pulverization.
Public/Granted literature
- US20040253172A1 Method for preparing barium-titanate based powder Public/Granted day:2004-12-16
Information query
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