Title:
ELECTROLYTE FOR ELECTROLYTIC CAPACITOR
Document Type and Number:
Japanese Patent JP3254981
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To lower the specific resistance and improve tan δ characteristic, etc., and raise the life by dissolving dicarboxylic acid shown by a specified formula and its salt.
SOLUTION: For a polyhydric alcohol, ethylene glycol, diethylene glycol, propylene glycol, 1,4-butanediol, glycerine, or the like is used to serve as a solvent. For this solvent, dicarboxylic acid shown by the formula (R1 and R2 are aliphatic hydrocarbon groups, and n1, n2, and m are integers), or its salt is dissolved. What is more, for the amount of dissolved dicarboxylic acid or its salt shown by the formula, the long range of about 1-30wt.% is preferable. For the amount of molecules of the dicarboxylic acid shown by the formula, the range of n1=1-12 and n2=1-6 or thereabouts is preferable. Hereby, the specific resistance is low, and the tan δ property, etc., of the electrolytic capacitor can be improved, and the life can be raised.
Inventors:
Toshiyuki Takano
Application Number:
JP25814995A
Publication Date:
February 12, 2002
Filing Date:
September 11, 1995
Export Citation:
Assignee:
Hitachi AIC Co., Ltd.
International Classes:
H01G9/035; (IPC1-7): H01G9/035
Domestic Patent References:
| JP6290998A | ||||
| JP6275472A |