Electrolyte for very high voltage electrolytic capacitors

Details Electrolyte for very high voltage electrolytic capacitors Electrolyte for very high voltage electrolytic capacitors

2007-09-11

2007-09-11

Ha, Nguyen T. (Department: 2831)

Electricity: electrical systems and devices

Electrolytic systems or devices

Liquid electrolytic capacitor

C361S505000, C361S508000, C361S516000, C361S519000, C361S523000, C361S525000, C252S062200

Reexamination Certificate

active

10340051

ABSTRACT:
The present invention is directed to an electrolyte for use in very high voltage electrolytic capacitors and to an electrolytic capacitor impregnated with the electrolyte of the present invention for use in an implantable cardioverter defibrillator (ICD). The electrolyte according to the present invention is composed of a mixture of an alkoxy-substituted alcohol, such as 2-methoxyethanol, 2-ethoxyethanol, or 2-butoxyethanol, and a long chain dicarboxylic acid, where the acid functional groups are separated by 34 carbons (referred to as “dimer acid”) or 54 carbons (referred to as “trimer acid”). The solution is then neutralized with ammonium hydroxide or other amine, such as ammonia, dimethylamine, trimethylamine, diethylamine, triethylamine, ethanolamine, diethanolamine, triethanolamine, diisopropylethylamine and N-methylimidazole. Additional cosolvents, such as ethylene glycol, 1,2-propanediol, 1,3-butanediol, 1,4-butanediol, di(ethylene glycol), tri(ethylene glycol), tetra(ethylene glycol), propyl alcohol, isopropyl alcohol, n-butanol, and di(ethylene glycol) butyl ether, may be added. Also, a cathode depolarizer, or degassing agent, from the group of nitro-substituted aromatic compounds (nitroaromatics) can be added to reduce the amount of gas produced during capacitor life.

REFERENCES:
patent: 4518471 (1985-05-01), Arora
patent: 4525249 (1985-06-01), Arora
patent: 4860169 (1989-08-01), Dapo
patent: 5131388 (1992-07-01), Pless et al.
patent: 5496481 (1996-03-01), Liu
patent: 5522851 (1996-06-01), Fayram
patent: 5715133 (1998-02-01), Harrington et al.
patent: 6058006 (2000-05-01), Yoshioka et al.
patent: 6128179 (2000-10-01), Morokuma
patent: 6307735 (2001-10-01), Saito et al.
patent: 6349028 (2002-02-01), Komatsu
patent: 6587329 (2003-07-01), Feger
patent: 6743370 (2004-06-01), Feger et al.

Affiliated with

Also associated with

Rating

Electrolyte for very high voltage electrolytic capacitors does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrolyte for very high voltage electrolytic capacitors, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrolyte for very high voltage electrolytic capacitors will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3759955