Title:
LONG CHAIN DIBASIC ACID AND ELECTROLYTE FOR DRIVING ELECTROLYTIC CAPACITOR
Document Type and Number:
Japanese Patent JP3671262
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To prevent deposition as a crystal even at a low temperature and to prevent deterioration of electric conductivity even at a high temperature by using a dibasic acid denoted by a particular formula and/or a salt thereof as a solute.
SOLUTION: A dibasic acid selected from a group consisting of long chain dibasic acids denoted by a formula HOOC-A-B-COOH (A denotes branched chain allulene group with a carbon number 7-10, B denotes a formula I-formula VI). and long chain dibasic acids denoted by formula VII(R1 denotes a lower alkyl group, n denotes an integer 6-10) or an ammonium salt thereof, and this dibasic acid and/or ammonium salt thereof may be used as a solute. This is dissolved in a solvent whose main solvent is ethylene glycol to obtain an electrolyte for driving an electrolytic capacitor. Thus, deposition as a crystal can be prevented even at a low temperature, and further deterioration of electric conductivity can be prevented even at a high temperature.
Inventors:
Tokuyoshi Miyoshi
Yoshida Kida
Masashi Uehata
Yoshida Kida
Masashi Uehata
Application Number:
JP22165295A
Publication Date:
July 13, 2005
Filing Date:
August 30, 1995
Export Citation:
Assignee:
Okamura Oil Co., Ltd.
International Classes:
H01G9/035; C07C55/02; (IPC1-7): H01G9/035; C07C55/02
Domestic Patent References:
| JP6275472A | ||||
| JP6290998A |
Attorney, Agent or Firm:
Eiji Saegusa
Kakehi Yuro
Takeshi Ohara
Hiroji Nakagawa
Yasumitsu Tate
Kakehi Yuro
Takeshi Ohara
Hiroji Nakagawa
Yasumitsu Tate