Electrolytic capacitor provided with a low resistivity electroly

Details Electrolytic capacitor provided with a low resistivity electroly Electrolytic capacitor provided with a low resistivity electroly

1991-06-20

1992-05-05

Griffin, Donald A.

Electricity: electrical systems and devices

Electrolytic systems or devices

Liquid electrolytic capacitor

252 622, H01G 902

Patent

active

051113651

ABSTRACT:
An electrical capacitor having aluminum anode and cathode members separated by an insulating spacer impregnated with an electrolyte consisting of a solution containing from 50%-70% by weight of N-methylformamide, up to 30% by weight of 2-methoxyethanol, 2-ethoxyethanol, ethylene glycol or 1,2-propylene glycol, 12-20% by weight of an aromatic dicarboxylic acid selected from the group consisting of isophthalic acid and terephthalic acid, from 4%-10% by weight of dimethylamine or monomethylamine, the ratio of the amine to the dicarboxylic acid being less than 2.00:1 and greater than 1.67:1, up to 0.5% by weight of pelargonic acid, up to 0.1% by weight of phosphoric acid and up to 8% by weight of water.

REFERENCES:
patent: 3812039 (1974-05-01), Niwa
patent: 4101458 (1978-07-01), Taketani et al.
patent: 4823236 (1989-04-01), Fresia

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