Title:
MANUFACTURING METHOD FOR DIELECTRIC MATERIAL
Document Type and Number:
WIPO Patent Application WO/2009/125680
Kind Code:
A3
Abstract:
Disclosed is a method for easily manufacturing a dielectric material with a high specific inductive capacity that is composed of fine particles and in which aggregation is prevented. The present invention comprises: a first process for heating an amorphous fine-particle powder described below in air at a temperature equal to or greater than 230°C and below 530°C to obtain an intermediate product; and a second process of heating the intermediate product obtained in the first process under reduced pressure at a temperature ranging from 230°C to 530°C. The amorphous fine-particle powder contains titanium, barium, lactic acid, and oxalic acid, wherein the BET specific surface area is equal to or greater than 6 m2/g and the molar ratio of Ba to Ti (Ba/Ti) is 0.98 to 1.02, and has infrared absorption spectrum peaks derived from the lactic acid at 1,120-1,140 cm-1 and 1,040-1,060 cm-1.
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Inventors:
WADA SATOSHI (JP)
KONDO SHUUHEI (JP)
FUKAZAWA JUNYA (JP)
KONDO SHUUHEI (JP)
FUKAZAWA JUNYA (JP)
Application Number:
PCT/JP2009/056213
Publication Date:
December 03, 2009
Filing Date:
March 19, 2009
Export Citation:
Assignee:
NIPPON CHEMICAL IND (JP)
UNIV YAMANASHI (JP)
WADA SATOSHI (JP)
KONDO SHUUHEI (JP)
FUKAZAWA JUNYA (JP)
UNIV YAMANASHI (JP)
WADA SATOSHI (JP)
KONDO SHUUHEI (JP)
FUKAZAWA JUNYA (JP)
International Classes:
C01G23/00; C04B35/46; H01G4/12
Domestic Patent References:
| WO2005093763A1 | 2005-10-06 | |||
| WO2005094978A1 | 2005-10-13 |
Foreign References:
| JPH01294527A | 1989-11-28 | |||
| JP2007161502A | 2007-06-28 |
Attorney, Agent or Firm:
NIPPON CHEMICAL INDUSTRIAL CO., LTD. (Kameido 9-chome Koto-ku, Tokyo 15, JP)
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